Pub Date : 2024-11-17DOI: 10.1016/j.ijhydene.2024.11.199
Jiaxin Zhang, Shujiang Geng, Gang Chen, Fuhui Wang
A quaternary Fe4CoNiCu alloy coating is applied on SUS 430 steel substrate for solid oxide fuel cell (SOFC) interconnects application via magnetron sputtering technology. The oxidation behavior of the coated steels is investigated in air at 800 °C. During initial oxidation, Fe and Co in the alloy coating is oxidized preferentially, forming Fe-rich oxide. Ni is oxidized to NiO by inward diffusion of oxygen. Slight Cu diffuses to or near the surface of the oxide scale to form CuO. Some Cu reacts with Fe3O4 to form CuFeO2 inside the oxide scale. The alloy coating is thermally converted into a quaternary spinel coating of (Fe,Co,Ni,Cu)3O4 with a small quantity of CuO existing on the surface and a protective Cr2O3 layer is formed at the steel/coating interface. The (Fe,Co,Ni,Cu)3O4 spinel layer effectively inhibits the growth of Cr2O3 layer and the outward diffusion of Cr. The scale ASR is 13.08 mΩ cm2 at 800 °C after 1680 h oxidation.
通过磁控溅射技术,在用于固体氧化物燃料电池(SOFC)互连器件的 SUS 430 钢基板上涂覆了四价 Fe4CoNiCu 合金涂层。研究了涂层钢在 800 °C 空气中的氧化行为。在初始氧化过程中,合金涂层中的铁和钴优先被氧化,形成富含铁的氧化物。镍通过氧气的内向扩散氧化成氧化镍。少量的 Cu 扩散到氧化鳞片表面或其附近,形成 CuO。部分铜与 Fe3O4 反应,在氧化鳞片内部形成 CuFeO2。合金涂层在热作用下转化为 (Fe,Co,Ni,Cu)3O4四元尖晶石涂层,表面存在少量的 CuO,并在钢/涂层界面形成保护性 Cr2O3 层。(Fe,Co,Ni,Cu)3O4尖晶石层有效地抑制了 Cr2O3 层的生长和铬的向外扩散。在 800 °C 下氧化 1680 小时后,鳞片 ASR 为 13.08 mΩ cm2。
{"title":"Sputtered quaternary alloy coating of Fe4CoNiCu for solid oxide fuel cell steel interconnects application","authors":"Jiaxin Zhang, Shujiang Geng, Gang Chen, Fuhui Wang","doi":"10.1016/j.ijhydene.2024.11.199","DOIUrl":"10.1016/j.ijhydene.2024.11.199","url":null,"abstract":"<div><div>A quaternary Fe<sub>4</sub>CoNiCu alloy coating is applied on SUS 430 steel substrate for solid oxide fuel cell (SOFC) interconnects application via magnetron sputtering technology. The oxidation behavior of the coated steels is investigated in air at 800 °C. During initial oxidation, Fe and Co in the alloy coating is oxidized preferentially, forming Fe-rich oxide. Ni is oxidized to NiO by inward diffusion of oxygen. Slight Cu diffuses to or near the surface of the oxide scale to form CuO. Some Cu reacts with Fe<sub>3</sub>O<sub>4</sub> to form CuFeO<sub>2</sub> inside the oxide scale. The alloy coating is thermally converted into a quaternary spinel coating of (Fe,Co,Ni,Cu)<sub>3</sub>O<sub>4</sub> with a small quantity of CuO existing on the surface and a protective Cr<sub>2</sub>O<sub>3</sub> layer is formed at the steel/coating interface. The (Fe,Co,Ni,Cu)<sub>3</sub>O<sub>4</sub> spinel layer effectively inhibits the growth of Cr<sub>2</sub>O<sub>3</sub> layer and the outward diffusion of Cr. The scale ASR is 13.08 mΩ cm<sup>2</sup> at 800 °C after 1680 h oxidation.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"95 ","pages":"Pages 71-82"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-17DOI: 10.1016/j.ijhydene.2024.11.150
Khursheed Muzammil , Farag M.A. Altalbawy , Dharmesh Sur , Suhas Ballal , Jacquline Tham , Ambati Vijay Kumar , Shoira Bobonazarovna Formanova , Iman Samir Alalaq , Forat H. Alsultany , Salah Hassan Zain Al-Abdeen , Marwa Alhedrawe
The electrochemical water splitting process is one of the most promising approaches for sustainable hydrogen production. Unfortunately, the slow kinetic of oxygen evolution reaction (OER) at the surface of the anode has prevented the highly efficient production of hydrogen. One of the useful procedures to overcome this challenge is to replace the OER process by Urea oxidation reaction (UOR). Here, Co–Mn–P nanolayer was created on the surface of CoO nanosheets by electrodeposition process and its morphology, chemical composition and electrocatalytic properties were investigated in HER and UOR processes. In optimal conditions, this electrode needed only −82 mV and 1.342 V vs RHE, for HER and UOR processes at a current density of 10 mA cm−2 respectively. In addition, this electrode demonstrated a unique activity in the two-electrode urea electrolytic cell. Significantly, a low cell voltage of 1.444 V was required at a current density of 10 mA cm−2 in the urea electrolysis cell. Moreover, the studied electrode showed excellent stability in the HER and overall urea electrolysis systems. This study introduces an effective strategy for designing active and stable catalyst for energy saving hydrogen production.
电化学水分裂过程是最有希望实现可持续制氢的方法之一。遗憾的是,阳极表面缓慢的氧进化反应(OER)动力学阻碍了高效制氢。克服这一难题的有效方法之一是用尿素氧化反应(UOR)取代 OER 过程。本文通过电沉积工艺在 CoO 纳米片表面生成了 Co-Mn-P 纳米层,并研究了其在 HER 和 UOR 过程中的形态、化学成分和电催化性能。在最佳条件下,当电流密度为 10 mA cm-2 时,该电极在 HER 和 UOR 过程中的相对于 RHE 的电压分别仅为 -82 mV 和 1.342 V。此外,这种电极在双电极尿素电解池中也表现出独特的活性。值得注意的是,在尿素电解池中,电流密度为 10 mA cm-2 时需要 1.444 V 的低电池电压。此外,所研究的电极在 HER 和整个尿素电解系统中都表现出卓越的稳定性。这项研究为设计活性稳定的节能制氢催化剂提供了一种有效的策略。
{"title":"Novel electrosynthesis of Co–Mn–P nanosheets as efficient, economical and stable electrode materials for hydrogen evolution reaction and urea oxidation reaction","authors":"Khursheed Muzammil , Farag M.A. Altalbawy , Dharmesh Sur , Suhas Ballal , Jacquline Tham , Ambati Vijay Kumar , Shoira Bobonazarovna Formanova , Iman Samir Alalaq , Forat H. Alsultany , Salah Hassan Zain Al-Abdeen , Marwa Alhedrawe","doi":"10.1016/j.ijhydene.2024.11.150","DOIUrl":"10.1016/j.ijhydene.2024.11.150","url":null,"abstract":"<div><div>The electrochemical water splitting process is one of the most promising approaches for sustainable hydrogen production. Unfortunately, the slow kinetic of oxygen evolution reaction (OER) at the surface of the anode has prevented the highly efficient production of hydrogen. One of the useful procedures to overcome this challenge is to replace the OER process by Urea oxidation reaction (UOR). Here, Co–Mn–P nanolayer was created on the surface of CoO nanosheets by electrodeposition process and its morphology, chemical composition and electrocatalytic properties were investigated in HER and UOR processes. In optimal conditions, this electrode needed only −82 mV and 1.342 V vs RHE, for HER and UOR processes at a current density of 10 mA cm<sup>−2</sup> respectively. In addition, this electrode demonstrated a unique activity in the two-electrode urea electrolytic cell. Significantly, a low cell voltage of 1.444 V was required at a current density of 10 mA cm<sup>−2</sup> in the urea electrolysis cell. Moreover, the studied electrode showed excellent stability in the HER and overall urea electrolysis systems. This study introduces an effective strategy for designing active and stable catalyst for energy saving hydrogen production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"95 ","pages":"Pages 12-21"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study addresses Japan's pressing issue of plastic waste by proposing a conversion process to produce hydrogen from non-biodegradable plastics. Utilizing DWSIM software for plastic-to-hydrogen conversion and Aspen Plus for hydrogen compression, which can be stored in a Type IV cylinder, the analysis shows that a plant can generate 1,449,792 kg/year of hydrogen from various plastics, including PET, PVC, PE, PP, and PS. Operating at 600 °C and 1 bar, the facility processes 100 kg/h of plastic to yield 7.098 kg/h of hydrogen. The project's capital expenditure (CAPEX) is 143.5 million Japanese Yen, with an operational expenditure (OPEX) of 29.7 million JPY/year. The Levelized Cost of Hydrogen (LCOH) varies, with estimates of 8.874–19.82 USD/kg based on construction timelines, and sensitivity analysis and uncertainty analysis are performed to estimate the effect of various parameters on LCOH. This process holds potential for advancing sustainable development in Japan and globally, addressing both waste management and clean energy production.
本研究针对日本亟待解决的塑料垃圾问题,提出了一种利用不可降解塑料生产氢气的转化工艺。利用 DWSIM 软件进行塑料制氢转换,利用 Aspen Plus 进行氢气压缩(氢气可储存在 IV 型气瓶中),分析表明,一个工厂每年可从各种塑料(包括 PET、PVC、PE、PP 和 PS)中产生 1,449,792 公斤氢气。设备在 600 °C 和 1 bar 的条件下运行,每小时处理 100 公斤塑料,每小时产生 7.098 公斤氢气。该项目的资本支出(CAPEX)为 1.435 亿日元,运营支出(OPEX)为 2970 万日元/年。氢气的平准化成本(LCOH)不尽相同,根据建设时间表估算为 8.874-19.82 美元/千克,并进行了敏感性分析和不确定性分析,以估算各种参数对 LCOH 的影响。该工艺具有推动日本和全球可持续发展的潜力,可同时解决废物管理和清洁能源生产问题。
{"title":"Techno-economic analysis of hydrogen production from waste plastics and storage plant in the context of Japan","authors":"Bishwash Paneru , Biplov Paneru , Sanjog Chhetri Sapkota , Dhiraj Kumar Mandal , Prem Giri","doi":"10.1016/j.ijhydene.2024.11.134","DOIUrl":"10.1016/j.ijhydene.2024.11.134","url":null,"abstract":"<div><div>This study addresses Japan's pressing issue of plastic waste by proposing a conversion process to produce hydrogen from non-biodegradable plastics. Utilizing DWSIM software for plastic-to-hydrogen conversion and Aspen Plus for hydrogen compression, which can be stored in a Type IV cylinder, the analysis shows that a plant can generate 1,449,792 kg/year of hydrogen from various plastics, including PET, PVC, PE, PP, and PS. Operating at 600 °C and 1 bar, the facility processes 100 kg/h of plastic to yield 7.098 kg/h of hydrogen. The project's capital expenditure (CAPEX) is 143.5 million Japanese Yen, with an operational expenditure (OPEX) of 29.7 million JPY/year. The Levelized Cost of Hydrogen (LCOH) varies, with estimates of 8.874–19.82 USD/kg based on construction timelines, and sensitivity analysis and uncertainty analysis are performed to estimate the effect of various parameters on LCOH. This process holds potential for advancing sustainable development in Japan and globally, addressing both waste management and clean energy production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"95 ","pages":"Pages 53-70"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-17DOI: 10.1016/j.ijhydene.2024.11.039
Fangfang Liu , Shan Ji , Xinyu Liu , Zihao Li , Jimei Song , Hao Li , Hui Wang
Nickel-based transition metal electrocatalysts for water electrolysis are promising alternatives to precious metal based electrocatalysts, due to their high activity, low cost, and relatively high stability, offering broad prospects for application in hydrogen production via water electrolysis. Modifying nickel-based transition metal electrocatalysts with phosphorus elements and Schottky heterojunction interfaces can influence the electronic state of the metal, thus enhance the electrocatalytic performance of the catalyst. In this study, a phosphor modified nickel-based electrocatalyst, i.e. MXene/Ni2P/NF electrode material was obtained by assembling Ni2P nanosheets on a nickel foam (NF) substrate and then depositing MXene nanosheets onto the surface of Ni2P/NF via electrophoretic deposition. Water droplets can wet the interior of the electrode material within 150 ms (below the detection limit), demonstrating excellent hydrophilicity, which facilitates the wettability of the electrolyte and the adsorption/desorption of reaction intermediates. Electrochemical tests revealed that the MXene/Ni2P/NF electrode exhibits an overpotential of only 94 mV at a current density of 10 mA cm−2, with a Tafel slope of 83.7 mV dec−1, in the hydrogen evolution reaction. The overpotential remains virtually unchanged after a 24-h stability test.
{"title":"Developing Schottky high-controductivity Ti3C2TX MXene/Ni2P/NF heterojunction with modulating surface electron density to boost hydrogen evolution reaction","authors":"Fangfang Liu , Shan Ji , Xinyu Liu , Zihao Li , Jimei Song , Hao Li , Hui Wang","doi":"10.1016/j.ijhydene.2024.11.039","DOIUrl":"10.1016/j.ijhydene.2024.11.039","url":null,"abstract":"<div><div>Nickel-based transition metal electrocatalysts for water electrolysis are promising alternatives to precious metal based electrocatalysts, due to their high activity, low cost, and relatively high stability, offering broad prospects for application in hydrogen production via water electrolysis. Modifying nickel-based transition metal electrocatalysts with phosphorus elements and Schottky heterojunction interfaces can influence the electronic state of the metal, thus enhance the electrocatalytic performance of the catalyst. In this study, a phosphor modified nickel-based electrocatalyst, i.e. MXene/Ni<sub>2</sub>P/NF electrode material was obtained by assembling Ni<sub>2</sub>P nanosheets on a nickel foam (NF) substrate and then depositing MXene nanosheets onto the surface of Ni<sub>2</sub>P/NF via electrophoretic deposition. Water droplets can wet the interior of the electrode material within 150 ms (below the detection limit), demonstrating excellent hydrophilicity, which facilitates the wettability of the electrolyte and the adsorption/desorption of reaction intermediates. Electrochemical tests revealed that the MXene/Ni<sub>2</sub>P/NF electrode exhibits an overpotential of only 94 mV at a current density of 10 mA cm<sup>−2</sup>, with a Tafel slope of 83.7 mV dec<sup>−1</sup>, in the hydrogen evolution reaction. The overpotential remains virtually unchanged after a 24-h stability test.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"95 ","pages":"Pages 22-30"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-17DOI: 10.1016/j.ijhydene.2024.11.119
Akmal Irham , M.A. Hannan , Safwan A. Rahman , Pin Jern Ker , Richard TK. Wong , M.F. Roslan , R.A. Begum , Gilsoo Jang
A critical issue regarding the unreliable electricity supply in regions experiencing frequent grid outages poses significant economic and social challenges. Despite the integration of renewable energy sources like photovoltaic (PV) systems, the intermittent nature and low reliability of these resources necessitate additional energy storage solutions. The study investigates the effectiveness of various power system configurations, including PV only, PV/BES, and PV/BES/H2 systems. Using HOMER software, the study delves into investigating the impact of different outage parameters, specifically focusing on the outage durations and frequencies to the reliability and cost-effectiveness of these systems. The study analyzes how these outage parameters influence the loss of power supply probability (LPSP) and the cost of energy (COE). Three cases were being investigated in this study, which are Case 1: Varying mean outage duration (MOD) with fixed outage frequency (OF), Case 2: Varying OF with MOD and Case 3: Varying both the MOD and OF. The inclusion of H2 storage significantly reduced the LPSP in Case 1, from a range of 0.882%–2.79% in the PV/BES system to a much lower range of 0.15%–0.392%. In Case 2, the PV/BES/H2 system also markedly improved reliability, lowering the LPSP from 0.0751% to 1.28% in the PV/BES system to just 0.0279%–0.189%. The results of Case 3 demonstrate that OF has a greater impact on system reliability, as evidenced by a significantly larger rate of change in LPSP when varying OF with constant MOD compared to varying MOD with constant OF. Therefore, the inclusion of energy storage significantly enhances reliability, with the PV/BES/H2 system showing the lowest LPSP values in both cases. However, COE for the PV/BES/H2 system was higher in both cases, ranging from 0.22 to 0.326 $/kWh, compared to 0.101 to 0.156 $/kWh for the PV/BES system. This highlights the need for advancements in H2 storage technology to reduce cost. These findings underscore the critical importance of accurately sizing components to ensure a reliable and economical power supply in regions with unstable grids.
{"title":"Cost-effectiveness and reliability evaluation of hydrogen storage-based hybrid energy systems for unreliable grid","authors":"Akmal Irham , M.A. Hannan , Safwan A. Rahman , Pin Jern Ker , Richard TK. Wong , M.F. Roslan , R.A. Begum , Gilsoo Jang","doi":"10.1016/j.ijhydene.2024.11.119","DOIUrl":"10.1016/j.ijhydene.2024.11.119","url":null,"abstract":"<div><div>A critical issue regarding the unreliable electricity supply in regions experiencing frequent grid outages poses significant economic and social challenges. Despite the integration of renewable energy sources like photovoltaic (PV) systems, the intermittent nature and low reliability of these resources necessitate additional energy storage solutions. The study investigates the effectiveness of various power system configurations, including PV only, PV/BES, and PV/BES/H<sub>2</sub> systems. Using HOMER software, the study delves into investigating the impact of different outage parameters, specifically focusing on the outage durations and frequencies to the reliability and cost-effectiveness of these systems. The study analyzes how these outage parameters influence the loss of power supply probability (LPSP) and the cost of energy (COE). Three cases were being investigated in this study, which are Case 1: Varying mean outage duration (MOD) with fixed outage frequency (OF), Case 2: Varying OF with MOD and Case 3: Varying both the MOD and OF. The inclusion of H<sub>2</sub> storage significantly reduced the LPSP in Case 1, from a range of 0.882%–2.79% in the PV/BES system to a much lower range of 0.15%–0.392%. In Case 2, the PV/BES/H<sub>2</sub> system also markedly improved reliability, lowering the LPSP from 0.0751% to 1.28% in the PV/BES system to just 0.0279%–0.189%. The results of Case 3 demonstrate that OF has a greater impact on system reliability, as evidenced by a significantly larger rate of change in LPSP when varying OF with constant MOD compared to varying MOD with constant OF. Therefore, the inclusion of energy storage significantly enhances reliability, with the PV/BES/H<sub>2</sub> system showing the lowest LPSP values in both cases. However, COE for the PV/BES/H<sub>2</sub> system was higher in both cases, ranging from 0.22 to 0.326 $/kWh, compared to 0.101 to 0.156 $/kWh for the PV/BES system. This highlights the need for advancements in H<sub>2</sub> storage technology to reduce cost. These findings underscore the critical importance of accurately sizing components to ensure a reliable and economical power supply in regions with unstable grids.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"94 ","pages":"Pages 1314-1328"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-17DOI: 10.1016/j.ijhydene.2024.11.226
Yanan Chen, Yuanbo Zhao, Yanan Liu, Hongna Xing, Xiuhong Zhu, Juan Feng, Yan Zong, Chunyan Liao, Xinghua Li, Xinliang Zheng
Constructing unique interfaces is a reliable strategy for improving charge transfer kinetics of electrode materials and thus enhances their energy storage. Therefore, in this work, by using an ortho-octahedral Cu-BTC (Tricopper; benzene-1,3,5-tricarboxylate) to derive CuS and further anchoring SnO2 nanoparticles on its surface, a CuS–C@SnO2 p-n heterojunction with an octahedron-like structure is constructed. Benefiting from the joint influence of the novel structure and built-in electric field produced by the CuS–C@SnO2 p-n heterojunction, the CuS–C@SnO2 electrode shows a specific capacitance of 589.25 F g−1 at 1 A g−1 and an excellent rate capacity of 81.4% at 10 A g−1. Particularly, the packaged CuS–C@SnO2//AC asymmetric supercapacitor (ASC) represents a high energy density of 50.79 Wh kg−1 at a power density of 800.01 W kg−1 and an outstanding capacitance retention of 86.7% after 10000 cycles. In addition, by using density functional theory (DFT) calculations, we further confirm that CuS–C@SnO2 p-n heterojunction has a satisfactory adsorption capacity for OH− and an accelerated transfer for free electrons by the electron rearrangements at the interface, which are beneficial for CuS–C@SnO2 to enhance its storage capacity. This work provides an effective strategy for designing efficient energy storage devices.
{"title":"Interfacial charge engineering of Cu-BTC derived octahedron-like CuS–C@SnO2 p-n heterojunction for boosting energy storage performance","authors":"Yanan Chen, Yuanbo Zhao, Yanan Liu, Hongna Xing, Xiuhong Zhu, Juan Feng, Yan Zong, Chunyan Liao, Xinghua Li, Xinliang Zheng","doi":"10.1016/j.ijhydene.2024.11.226","DOIUrl":"10.1016/j.ijhydene.2024.11.226","url":null,"abstract":"<div><div>Constructing unique interfaces is a reliable strategy for improving charge transfer kinetics of electrode materials and thus enhances their energy storage. Therefore, in this work, by using an ortho-octahedral Cu-BTC (Tricopper; benzene-1,3,5-tricarboxylate) to derive CuS and further anchoring SnO<sub>2</sub> nanoparticles on its surface, a CuS–C@SnO<sub>2</sub> p-n heterojunction with an octahedron-like structure is constructed. Benefiting from the joint influence of the novel structure and built-in electric field produced by the CuS–C@SnO<sub>2</sub> p-n heterojunction, the CuS–C@SnO<sub>2</sub> electrode shows a specific capacitance of 589.25 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and an excellent rate capacity of 81.4% at 10 A g<sup>−1</sup>. Particularly, the packaged CuS–C@SnO<sub>2</sub>//AC asymmetric supercapacitor (ASC) represents a high energy density of 50.79 Wh kg<sup>−1</sup> at a power density of 800.01 W kg<sup>−1</sup> and an outstanding capacitance retention of 86.7% after 10000 cycles. In addition, by using density functional theory (DFT) calculations, we further confirm that CuS–C@SnO<sub>2</sub> p-n heterojunction has a satisfactory adsorption capacity for OH<sup>−</sup> and an accelerated transfer for free electrons by the electron rearrangements at the interface, which are beneficial for CuS–C@SnO<sub>2</sub> to enhance its storage capacity. This work provides an effective strategy for designing efficient energy storage devices.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"95 ","pages":"Pages 43-52"},"PeriodicalIF":8.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-16DOI: 10.1016/j.ijhydene.2024.11.160
Hossein Gharibvand , G.B. Gharehpetian , A. Anvari-Moghaddam
This study investigates the production of green hydrogen in the southern coastal cities of Iran, leveraging local advantages. These include the high potential for photovoltaic generation, the need for desalination power plants, and access to the sea and ports, all of which make the southern coasts of Iran favorable for green hydrogen production. However, the approach presented in this paper can also be applied to similar regions.
Initially, the optimal size of the electrolyzer for maximum hydrogen production at each location is determined. To compare the potential of these locations, the levelized cost of energy (LCOE) and levelized cost of hydrogen (LCOH) are calculated, and the effects of variables such as the discount rate and water price on these costs are analyzed. Unlike many existing studies, this research accurately models the impact of temperature on the techno-economic outputs of the photovoltaic power plant and electrolyzer and compares it to a scenario where the temperature effect is not considered. Additionally, the study examines the minimum power required for the electrolyzer to operate efficiently, avoiding low-efficiency operations.
The results indicate that ignoring the temperature effect leads to an overestimation of electrolyzer power and hydrogen production. The discount rate significantly impacts LCOE and LCOH, while the cost of water for hydrogen production has a negligible effect on LCOH. This is due to the higher influence of energy costs and electrolyzer investment on LCOH.
{"title":"Feasibility studies of green hydrogen production using photovoltaic systems in Iran's southern coastal regions","authors":"Hossein Gharibvand , G.B. Gharehpetian , A. Anvari-Moghaddam","doi":"10.1016/j.ijhydene.2024.11.160","DOIUrl":"10.1016/j.ijhydene.2024.11.160","url":null,"abstract":"<div><div>This study investigates the production of green hydrogen in the southern coastal cities of Iran, leveraging local advantages. These include the high potential for photovoltaic generation, the need for desalination power plants, and access to the sea and ports, all of which make the southern coasts of Iran favorable for green hydrogen production. However, the approach presented in this paper can also be applied to similar regions.</div><div>Initially, the optimal size of the electrolyzer for maximum hydrogen production at each location is determined. To compare the potential of these locations, the levelized cost of energy (LCOE) and levelized cost of hydrogen (LCOH) are calculated, and the effects of variables such as the discount rate and water price on these costs are analyzed. Unlike many existing studies, this research accurately models the impact of temperature on the techno-economic outputs of the photovoltaic power plant and electrolyzer and compares it to a scenario where the temperature effect is not considered. Additionally, the study examines the minimum power required for the electrolyzer to operate efficiently, avoiding low-efficiency operations.</div><div>The results indicate that ignoring the temperature effect leads to an overestimation of electrolyzer power and hydrogen production. The discount rate significantly impacts LCOE and LCOH, while the cost of water for hydrogen production has a negligible effect on LCOH. This is due to the higher influence of energy costs and electrolyzer investment on LCOH.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"94 ","pages":"Pages 1212-1223"},"PeriodicalIF":8.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-16DOI: 10.1016/j.ijhydene.2024.11.099
Grzegorz Przybyla , Willian Cezar Nadaleti , Jeferson Peres Gomes , Maele Costa dos Santos , Eduarda Gomes de Souza
With the expansion in agro-industrial operations there is an urgent need to solve the challenge of dealing with the products waste. Today, an overwhelming portion of this waste ends up in industrial waste disposal sites. Wherefore, anaerobic co-digestion (ACoD) emerges as an effective technique for waste treatment, being environmentally and economically viable, since a microbial community converts by-products into renewable energy in the form of biogas, with high levels of hydrogen and other gases. ACoD has proven effective in the management of organic waste from agro-industry. However, mastering the biochemistry of the process, especially when varying the mixtures of waste used, is essential for controlling biological reactors and optimizing energy production. Even though separate studies have evaluated the anaerobic digestion of rice parboiling effluent and peach processing residue, co-digestion of both are scarcely investigated. The knowledge and mastery of the process parameters using this mixture are essential to ensure effective operational control of anaerobic reactors with maximum energy generation. Therefore, this research evaluated the biogas production from ACoD of rice parboiling effluent and waste of peaches processing. The experiment followed a batch regime based on a 22-factorial arrangement. The factors used were the peach percentage in the substrate (P), which varied from 2.5 to 5%, and the substrate-inoculum ratio (S/I), which was alternated between 1.5 and 2.5 gCOD/gVSS. The average Chemical Oxygen Demand (COD) removal efficiency of the reactors was 82.1% and, after the digestion process, the pH of the reactors remained neutral, showing that anaerobic digestion is a suitable method for treating the assessed wastes. In the analyzed proportions, the higher the peach percentage in the substrate, the lower the total methane production, whereas the S/I demonstrated the opposite effect. Reactors III (S/I = 2.5 and P = 2.5%), presented the most durable and the highest production, being the best combination of the factorial studied. Finally, it can be said that for the state of Rio Grande do Sul, the largest rice and peach producer in Brazil, ACoD of the wastes assessed in this research represents a significantly relevant option, enabling the development of the circular economy, the industrial symbiosis, and the sustainable production in the State.
{"title":"Transforming by-products into renewable energy: Biochemical analysis of anaerobic digestion of biowastes for bioreactors optimization supporting the low-carbon agroindustry","authors":"Grzegorz Przybyla , Willian Cezar Nadaleti , Jeferson Peres Gomes , Maele Costa dos Santos , Eduarda Gomes de Souza","doi":"10.1016/j.ijhydene.2024.11.099","DOIUrl":"10.1016/j.ijhydene.2024.11.099","url":null,"abstract":"<div><div>With the expansion in agro-industrial operations there is an urgent need to solve the challenge of dealing with the products waste. Today, an overwhelming portion of this waste ends up in industrial waste disposal sites. Wherefore, anaerobic co-digestion (ACoD) emerges as an effective technique for waste treatment, being environmentally and economically viable, since a microbial community converts by-products into renewable energy in the form of biogas, with high levels of hydrogen and other gases. ACoD has proven effective in the management of organic waste from agro-industry. However, mastering the biochemistry of the process, especially when varying the mixtures of waste used, is essential for controlling biological reactors and optimizing energy production. Even though separate studies have evaluated the anaerobic digestion of rice parboiling effluent and peach processing residue, co-digestion of both are scarcely investigated. The knowledge and mastery of the process parameters using this mixture are essential to ensure effective operational control of anaerobic reactors with maximum energy generation. Therefore, this research evaluated the biogas production from ACoD of rice parboiling effluent and waste of peaches processing. The experiment followed a batch regime based on a 2<sup>2</sup>-factorial arrangement. The factors used were the peach percentage in the substrate (P), which varied from 2.5 to 5%, and the substrate-inoculum ratio (S/I), which was alternated between 1.5 and 2.5 gCOD/gVSS. The average Chemical Oxygen Demand (COD) removal efficiency of the reactors was 82.1% and, after the digestion process, the pH of the reactors remained neutral, showing that anaerobic digestion is a suitable method for treating the assessed wastes. In the analyzed proportions, the higher the peach percentage in the substrate, the lower the total methane production, whereas the S/I demonstrated the opposite effect. Reactors III (S/I = 2.5 and P = 2.5%), presented the most durable and the highest production, being the best combination of the factorial studied. Finally, it can be said that for the state of Rio Grande do Sul, the largest rice and peach producer in Brazil, ACoD of the wastes assessed in this research represents a significantly relevant option, enabling the development of the circular economy, the industrial symbiosis, and the sustainable production in the State.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"94 ","pages":"Pages 912-921"},"PeriodicalIF":8.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In response to the limitation of cable power supply on the movement range of mobile welding robots and the difficulty in achieving automatic welding of large equipment, a fuel cell hybrid power system is applied to the electric drive system of welding robots. State machines are used to determine the energy distribution state of hybrid power systems, while fuzzy algorithms are used to control the energy distribution of hybrid power in some states. In order to reduce the fluctuation of fuel cell power output and improve the economy of the energy supply system, a guidance head optimization algorithm is adopted to adjust the fuzzy membership function. Taking hydrogen consumption and fuel cell power output fluctuations as optimization objectives, and the SoC and fuzzy load deviation adjustment function of lithium-ion batteries as input variables, optimize the output power distribution of fuel cells and lithium-ion batteries. Compared with the optimization results of traditional guidance head optimization algorithms, particle swarm optimization algorithms, and fuzzy algorithms, the improved guidance head optimization algorithm can converge with fewer iterations while satisfying the dynamic response of robots, and can effectively improve the output power characteristics of fuel cells. Therefore, the control strategy studied in this article can effectively improve the output power characteristics of fuel cells, reduce output current ripple, and shorten response time. At the same time, it reduces the equivalent hydrogen consumption of the hybrid system and improves fuel economy.
{"title":"Energy management and distribution of fuel cell hybrid power system based on efficient and stable movement of mobile robot","authors":"Xueqin Lü , Xinrui Zhai , Yangyang Zhang , Chuanmin Zhu , Shenchen Qian","doi":"10.1016/j.ijhydene.2024.11.161","DOIUrl":"10.1016/j.ijhydene.2024.11.161","url":null,"abstract":"<div><div>In response to the limitation of cable power supply on the movement range of mobile welding robots and the difficulty in achieving automatic welding of large equipment, a fuel cell hybrid power system is applied to the electric drive system of welding robots. State machines are used to determine the energy distribution state of hybrid power systems, while fuzzy algorithms are used to control the energy distribution of hybrid power in some states. In order to reduce the fluctuation of fuel cell power output and improve the economy of the energy supply system, a guidance head optimization algorithm is adopted to adjust the fuzzy membership function. Taking hydrogen consumption and fuel cell power output fluctuations as optimization objectives, and the SoC and fuzzy load deviation adjustment function of lithium-ion batteries as input variables, optimize the output power distribution of fuel cells and lithium-ion batteries. Compared with the optimization results of traditional guidance head optimization algorithms, particle swarm optimization algorithms, and fuzzy algorithms, the improved guidance head optimization algorithm can converge with fewer iterations while satisfying the dynamic response of robots, and can effectively improve the output power characteristics of fuel cells. Therefore, the control strategy studied in this article can effectively improve the output power characteristics of fuel cells, reduce output current ripple, and shorten response time. At the same time, it reduces the equivalent hydrogen consumption of the hybrid system and improves fuel economy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"94 ","pages":"Pages 1064-1083"},"PeriodicalIF":8.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-16DOI: 10.1016/j.ijhydene.2024.11.043
Siqin Yu , Shaowen Mao , Mohamed Mehana
Underground hydrogen storage (UHS) in porous formations is emerging as a promising solution to global decarbonization. While much knowledge from geologic carbon sequestration is transferable, a critical technical challenge unique to UHS is the active interaction between hydrogen and microbes. In this study, we develop an analytical framework to quantify the bioclogging effect in saline aquifers at the reservoir scale. Our objective is to understand how bioclogging will impact UHS operations and explore potential mitigation strategies. To achieve this, we extend the Buckley–Leverett solution to construct the solution, which is computationally efficient by preserving the analytical nature. Our findings reveal that near-well permeability impairment could be up to twice as severe as previously estimated, emphasizing the advantages of deeper formations with higher temperatures, where microbial activity is reduced. Furthermore, we observed an increase in hydrogen recovery and a progressive advancement of the gas plume front position across storage cycles. These insights not only contribute to designing operational conditions but also suggest effective mitigation strategies for maximizing hydrogen storage efficiency.
{"title":"Analytical study of bioclogging effects in underground hydrogen storage","authors":"Siqin Yu , Shaowen Mao , Mohamed Mehana","doi":"10.1016/j.ijhydene.2024.11.043","DOIUrl":"10.1016/j.ijhydene.2024.11.043","url":null,"abstract":"<div><div>Underground hydrogen storage (UHS) in porous formations is emerging as a promising solution to global decarbonization. While much knowledge from geologic carbon sequestration is transferable, a critical technical challenge unique to UHS is the active interaction between hydrogen and microbes. In this study, we develop an analytical framework to quantify the bioclogging effect in saline aquifers at the reservoir scale. Our objective is to understand how bioclogging will impact UHS operations and explore potential mitigation strategies. To achieve this, we extend the Buckley–Leverett solution to construct the solution, which is computationally efficient by preserving the analytical nature. Our findings reveal that near-well permeability impairment could be up to twice as severe as previously estimated, emphasizing the advantages of deeper formations with higher temperatures, where microbial activity is reduced. Furthermore, we observed an increase in hydrogen recovery and a progressive advancement of the gas plume front position across storage cycles. These insights not only contribute to designing operational conditions but also suggest effective mitigation strategies for maximizing hydrogen storage efficiency.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"94 ","pages":"Pages 862-870"},"PeriodicalIF":8.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}