Pub Date : 2024-06-25DOI: 10.1016/j.mtener.2024.101636
Yusuf Khan, Vinayak S. Kale, Jehad K. El-Demellawi, Yongjiu Lei, Wenli Zhao, Sharath Kandambeth, Prakash T. Parvatkar, Osama Shekhah, Mohamed Eddaoudi, Husam N. Alshareef
The growing demand for emerging electronic applications, including energy storage, sensors, and portable devices, has created a pressing need to develop miniaturized flexible energy storage components with convenient device architecture. Here, we report an in-plane hybrid micro-supercapacitor made of covalent organic frameworks and TiCT MXene as positive and negative electrodes, respectively. The devices utilize three-dimensional laser-scribed graphene (LSG) as a current collector for both electrodes using a CO-laser-based technique due to its good resolution for in-plane device fabrication, and high porosity of LSG that can facilitate better rate performance. The constructed hybrid supercapacitor has a maximum areal capacitance of 131.46 mF/cm and a voltage window of 1.2 V. The findings provide a new strategy to fabricate a hybrid supercapacitor for self-powered device applications at the microscale.
{"title":"Hybrid microsupercapacitors based on Ti3C2Tx MXene and covalent organic frameworks","authors":"Yusuf Khan, Vinayak S. Kale, Jehad K. El-Demellawi, Yongjiu Lei, Wenli Zhao, Sharath Kandambeth, Prakash T. Parvatkar, Osama Shekhah, Mohamed Eddaoudi, Husam N. Alshareef","doi":"10.1016/j.mtener.2024.101636","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101636","url":null,"abstract":"The growing demand for emerging electronic applications, including energy storage, sensors, and portable devices, has created a pressing need to develop miniaturized flexible energy storage components with convenient device architecture. Here, we report an in-plane hybrid micro-supercapacitor made of covalent organic frameworks and TiCT MXene as positive and negative electrodes, respectively. The devices utilize three-dimensional laser-scribed graphene (LSG) as a current collector for both electrodes using a CO-laser-based technique due to its good resolution for in-plane device fabrication, and high porosity of LSG that can facilitate better rate performance. The constructed hybrid supercapacitor has a maximum areal capacitance of 131.46 mF/cm and a voltage window of 1.2 V. The findings provide a new strategy to fabricate a hybrid supercapacitor for self-powered device applications at the microscale.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"137 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-24DOI: 10.1016/j.mtener.2024.101633
Muhammad Yousaf, Yuzheng Lu, Muhammad Akbar, Lei Lei, Shao Jing, Youkun Tao
Solid oxide fuel cells (SOFCs) are promising for clean energy generation due to their high efficiency, fuel flexibility, and status as a clean energy source with no environmental hazards. However, the challenge of operating these SOFCs at elevated temperatures (800–1000 °C) presents significant hurdles regarding material selection, cost-effectiveness, and device fabrication. Lowering the operational temperature of SOFCs can enhance performance and economic viability. Nevertheless, this pursuit introduces challenges in the form of increased ohmic and polarization resistances, which detrimentally affect electrochemical performance. High ohmic resistance and activation energy at lower temperatures reduce ionic conductivity and impede SOFC device efficiency. Recent advancements in materials and cutting-edge technologies have addressed these issues, particularly in low-temperature operations for SOFC devices. This review article focuses on the latest developments in material selection and advanced technologies that have demonstrated notable improvements in power output and long-term durability at lower operating temperatures, highlighting the significance of high-performing electrolyte and electrode materials with enhanced electrochemical and fast electrocatalytic functionality to improve cell efficiency. Additionally, the article explores the significant obstacles encountered by SOFCs at low operating temperatures.
{"title":"Advances in solid oxide fuel cell technologies: lowering the operating temperatures through material innovations","authors":"Muhammad Yousaf, Yuzheng Lu, Muhammad Akbar, Lei Lei, Shao Jing, Youkun Tao","doi":"10.1016/j.mtener.2024.101633","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101633","url":null,"abstract":"Solid oxide fuel cells (SOFCs) are promising for clean energy generation due to their high efficiency, fuel flexibility, and status as a clean energy source with no environmental hazards. However, the challenge of operating these SOFCs at elevated temperatures (800–1000 °C) presents significant hurdles regarding material selection, cost-effectiveness, and device fabrication. Lowering the operational temperature of SOFCs can enhance performance and economic viability. Nevertheless, this pursuit introduces challenges in the form of increased ohmic and polarization resistances, which detrimentally affect electrochemical performance. High ohmic resistance and activation energy at lower temperatures reduce ionic conductivity and impede SOFC device efficiency. Recent advancements in materials and cutting-edge technologies have addressed these issues, particularly in low-temperature operations for SOFC devices. This review article focuses on the latest developments in material selection and advanced technologies that have demonstrated notable improvements in power output and long-term durability at lower operating temperatures, highlighting the significance of high-performing electrolyte and electrode materials with enhanced electrochemical and fast electrocatalytic functionality to improve cell efficiency. Additionally, the article explores the significant obstacles encountered by SOFCs at low operating temperatures.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"2 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-24DOI: 10.1016/j.mtener.2024.101635
Peng-Jun Deng, Yaxuan Wang, Yang Liu, Jiajia Lu, Han-Pu Liang
Developing electrolytic seawater catalysts with excellent performance is crucial for efficient hydrogen production. In this study, NiP nanoparticles anchored on NiMo oxides, denoted as NiMo-P, are synthesized through heat-induced aliquation and phosphating of Ni in the ammonium nickel molybdate. Physicochemical characterizations reveal that the abundant NiP nanoparticles are uniformly distributed on NiMo oxides. Electrochemical data reveal that a mere overpotential of 103 mV is sufficient to achieve −100 mA cm in alkaline simulated seawater, which is significantly lower than that of Pt foil (179 mV) and commercial Pt/C (165 mV). This remarkable activity observed in NiMo-P may be due to the superior water dissociation activity and hydrogen desorption ability of the NiP nanoparticles, as calculated by density functional theory, which surpasses that of Pt. Meanwhile, the NiMo-P exhibits outstanding stability, as evidenced by the chronoamperometric curve. The current remains at 98.1% of its initial value after 500 h, which can be attributed to the etching-hydrolysis method that strengthens the catalyst-carrier interaction. Besides, the inherent repulsion toward chlorine ions at the cathode effectively avoids chemical corrosion. Importantly, when coupled with the previously reported anode, NiMo-P also exhibits exceptional performance in alkaline seawater.
{"title":"Heat-induced aliquation and phosphating of nickel as efficient catalysts for hydrogen evolution in alkaline seawater","authors":"Peng-Jun Deng, Yaxuan Wang, Yang Liu, Jiajia Lu, Han-Pu Liang","doi":"10.1016/j.mtener.2024.101635","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101635","url":null,"abstract":"Developing electrolytic seawater catalysts with excellent performance is crucial for efficient hydrogen production. In this study, NiP nanoparticles anchored on NiMo oxides, denoted as NiMo-P, are synthesized through heat-induced aliquation and phosphating of Ni in the ammonium nickel molybdate. Physicochemical characterizations reveal that the abundant NiP nanoparticles are uniformly distributed on NiMo oxides. Electrochemical data reveal that a mere overpotential of 103 mV is sufficient to achieve −100 mA cm in alkaline simulated seawater, which is significantly lower than that of Pt foil (179 mV) and commercial Pt/C (165 mV). This remarkable activity observed in NiMo-P may be due to the superior water dissociation activity and hydrogen desorption ability of the NiP nanoparticles, as calculated by density functional theory, which surpasses that of Pt. Meanwhile, the NiMo-P exhibits outstanding stability, as evidenced by the chronoamperometric curve. The current remains at 98.1% of its initial value after 500 h, which can be attributed to the etching-hydrolysis method that strengthens the catalyst-carrier interaction. Besides, the inherent repulsion toward chlorine ions at the cathode effectively avoids chemical corrosion. Importantly, when coupled with the previously reported anode, NiMo-P also exhibits exceptional performance in alkaline seawater.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"40 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-24DOI: 10.1016/j.mtener.2024.101629
S. Pandiaraj, S. Aftab, G. Koyyada, F. Kabir, H.H. Hegazy, J.H. Kim
In recent years, perovskite photovoltaics (PVs) have emerged as a highly promising technology for solar energy conversion. However, challenges such as instability, hysteresis, and limited device lifetimes have impeded their commercialization. In light of this, the proposed review addresses these critical issues by exploring the application of two-dimensional (2D) and one-dimensional (1D) carbon-based materials as interfacial layers in perovskite solar cells (PSCs). A potential remedy for these problems is the use of interfacial layers between the charge transport and perovskite absorber layers. In recent times, there has been a lot of interest in carbon-based materials in both two- and one-dimensional forms as interfacial materials because of their special qualities and suitability for PSCs. The application of 2D or 1D materials as interfacial layers in perovskite PVs is reviewed in this review, including electron (or hole) transport layers (ETLs or HTLs). We list the main issues with PSCs and show how these issues can be lessened by using interfacial layers. Furthermore, we synthesize existing understanding of the potential of 2D materials and their contribution in resolving important PSC problems. This thorough analysis advances the creation of dependable and effective perovskite PV systems for real-world solar energy harvesting uses.
{"title":"Perovskite photovoltaics: exploring the role of 2D and 1D carbon-based interfacial layers for enhanced stability and efficiency","authors":"S. Pandiaraj, S. Aftab, G. Koyyada, F. Kabir, H.H. Hegazy, J.H. Kim","doi":"10.1016/j.mtener.2024.101629","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101629","url":null,"abstract":"In recent years, perovskite photovoltaics (PVs) have emerged as a highly promising technology for solar energy conversion. However, challenges such as instability, hysteresis, and limited device lifetimes have impeded their commercialization. In light of this, the proposed review addresses these critical issues by exploring the application of two-dimensional (2D) and one-dimensional (1D) carbon-based materials as interfacial layers in perovskite solar cells (PSCs). A potential remedy for these problems is the use of interfacial layers between the charge transport and perovskite absorber layers. In recent times, there has been a lot of interest in carbon-based materials in both two- and one-dimensional forms as interfacial materials because of their special qualities and suitability for PSCs. The application of 2D or 1D materials as interfacial layers in perovskite PVs is reviewed in this review, including electron (or hole) transport layers (ETLs or HTLs). We list the main issues with PSCs and show how these issues can be lessened by using interfacial layers. Furthermore, we synthesize existing understanding of the potential of 2D materials and their contribution in resolving important PSC problems. This thorough analysis advances the creation of dependable and effective perovskite PV systems for real-world solar energy harvesting uses.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"8 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-24DOI: 10.1016/j.mtener.2024.101634
Shuyu Bu, Bin Liu, Anquan Zhu, Chuhao Luan, Kai Liu, Qili Gao, Xin Kong, Guo Hong, Wenjun Zhang
The development of high-efficiency catalysts plays a crucial role in advancing CO electroreduction techniques. Among potential candidates, diamond-based electrocatalysts show promise due to their broad electrochemical windows, which effectively suppress competitive hydrogen evolution and ensure high CO reduction efficiency. In this study, we report an integrated electrode composed of oxygen-terminated diamond nanocone (OD) with CoPc-molecules anchoring (CoPc/OD). The CoPc/OD electrodes exhibited remarkable performance, achieving a maximum Faradaic efficiency (FE) of 94.1% for CO at −0.97 V vs reversible hydrogen electrode (RHE), and maintaining an FE higher than 80% over a wide potential range of −0.67 V to −1.07 V vs RHE. The outstanding performance of the CoPc/OD electrode can be attributed to the synergistic effects between the nanostructured diamond surface and the CoPc catalyst. The hydroxyl-rich nature of the diamond surface facilitates the anchoring of CoPc molecules and bonding with Co atoms in CoPc. Simultaneously, the nanostructured diamond with sharp tips enhances CO adsorption, thereby improving the catalyst's performance. This study provides valuable insights into the utilization of non-metallic carbon materials, particularly diamond, as metal-free catalysts in CO electrochemical reduction and tackles challenges such as low current density and poor Faradaic efficiency, thus contributing to the advancement of more effective catalysts for CO electroreduction.
高效催化剂的开发在推进一氧化碳电还原技术方面发挥着至关重要的作用。在潜在的候选催化剂中，基于金刚石的电催化剂因其宽广的电化学窗口而大有可为，它能有效抑制竞争性氢进化并确保较高的 CO 还原效率。在本研究中，我们报告了一种由氧端金刚石纳米锥（OD）和 CoPc 分子锚定（CoPc/OD）组成的集成电极。CoPc/OD 电极表现出卓越的性能，在 -0.97 V 与可逆氢电极 (RHE) 相比时，对 CO 的最大法拉第效率 (FE) 达到 94.1%，并且在 -0.67 V 至 -1.07 V 与 RHE 相比的宽电位范围内，FE 保持在 80% 以上。CoPc/OD 电极的出色性能可归因于纳米结构金刚石表面与 CoPc 催化剂之间的协同效应。金刚石表面富含羟基的性质有利于 CoPc 分子的锚定以及与 CoPc 中 Co 原子的结合。同时，具有尖锐尖端的纳米结构金刚石增强了对 CO 的吸附，从而提高了催化剂的性能。这项研究为利用非金属碳材料（尤其是金刚石）作为一氧化碳电化学还原中的无金属催化剂提供了宝贵的见解，并解决了低电流密度和低法拉第效率等难题，从而有助于开发更有效的一氧化碳电还原催化剂。
{"title":"Oxygen functionalized diamond nanocone arrays coupling cobalt phthalocyanine for enhanced electrochemical CO2 reduction","authors":"Shuyu Bu, Bin Liu, Anquan Zhu, Chuhao Luan, Kai Liu, Qili Gao, Xin Kong, Guo Hong, Wenjun Zhang","doi":"10.1016/j.mtener.2024.101634","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101634","url":null,"abstract":"The development of high-efficiency catalysts plays a crucial role in advancing CO electroreduction techniques. Among potential candidates, diamond-based electrocatalysts show promise due to their broad electrochemical windows, which effectively suppress competitive hydrogen evolution and ensure high CO reduction efficiency. In this study, we report an integrated electrode composed of oxygen-terminated diamond nanocone (OD) with CoPc-molecules anchoring (CoPc/OD). The CoPc/OD electrodes exhibited remarkable performance, achieving a maximum Faradaic efficiency (FE) of 94.1% for CO at −0.97 V vs reversible hydrogen electrode (RHE), and maintaining an FE higher than 80% over a wide potential range of −0.67 V to −1.07 V vs RHE. The outstanding performance of the CoPc/OD electrode can be attributed to the synergistic effects between the nanostructured diamond surface and the CoPc catalyst. The hydroxyl-rich nature of the diamond surface facilitates the anchoring of CoPc molecules and bonding with Co atoms in CoPc. Simultaneously, the nanostructured diamond with sharp tips enhances CO adsorption, thereby improving the catalyst's performance. This study provides valuable insights into the utilization of non-metallic carbon materials, particularly diamond, as metal-free catalysts in CO electrochemical reduction and tackles challenges such as low current density and poor Faradaic efficiency, thus contributing to the advancement of more effective catalysts for CO electroreduction.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"25 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study focuses on the kinetic analysis of chlorophyll-based dimer photosensitizers adsorbed on Pt/TiO photocatalyst for light-driven hydrogen evolution. To elucidate the detailed mechanism, four photosensitizers, a carboxylated chlorin () and its dimer derivatives connecting an accessory pigment of chlorin (), porphyrin (), and bacteriochlorin () were synthesized and their kinetic processes in photocatalytic hydrogen evolution were investigated. The results indicate that possesses the highest ability to produce photogenerated carriers, with an appropriate excited state lifetime, lowest propensity for charge recombination, and longest charge transfer lifetime. These favorable characteristics contribute to its exceptional photocatalytic activity compared with other photosensitizers. Specifically, the -sensitized Pt/TiO photocatalyst exhibits a remarkable hydrogen generation rate of 5.36 mmol/g/h. Moreover, these photosensitizers demonstrate excellent stability and multiple-experimental consistency. This study provides significant insights into the development of dyad photosensitizers and highlights their practical significance in the field of photocatalysis. By harnessing chlorophyll, we have successfully harnessed efficient and controlled hydrogen fuel generation through photocatalytic water splitting, thus paving the way for future advancements in clean and sustainable energy production.
{"title":"Kinetic analysis of TiO2-based photocatalysts sensitized with chlorophyll-derived dimers for light-driven hydrogen evolution","authors":"Tianfang Zheng, Aijun Li, Hongyu Tu, Lingyun Pan, Shin-ichi Sasaki, Xiao-Feng Wang","doi":"10.1016/j.mtener.2024.101631","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101631","url":null,"abstract":"This study focuses on the kinetic analysis of chlorophyll-based dimer photosensitizers adsorbed on Pt/TiO photocatalyst for light-driven hydrogen evolution. To elucidate the detailed mechanism, four photosensitizers, a carboxylated chlorin () and its dimer derivatives connecting an accessory pigment of chlorin (), porphyrin (), and bacteriochlorin () were synthesized and their kinetic processes in photocatalytic hydrogen evolution were investigated. The results indicate that possesses the highest ability to produce photogenerated carriers, with an appropriate excited state lifetime, lowest propensity for charge recombination, and longest charge transfer lifetime. These favorable characteristics contribute to its exceptional photocatalytic activity compared with other photosensitizers. Specifically, the -sensitized Pt/TiO photocatalyst exhibits a remarkable hydrogen generation rate of 5.36 mmol/g/h. Moreover, these photosensitizers demonstrate excellent stability and multiple-experimental consistency. This study provides significant insights into the development of dyad photosensitizers and highlights their practical significance in the field of photocatalysis. By harnessing chlorophyll, we have successfully harnessed efficient and controlled hydrogen fuel generation through photocatalytic water splitting, thus paving the way for future advancements in clean and sustainable energy production.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"38 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Because of their good chemical stability and excellent optical properties, MoO, WO, and BiWO are important in photochromism. Their light-to-color conversion is highly dependent on the electronic band structure and charge transfer, and they obey the mechanism of electron accumulation in semiconductors when excited within the bandgap. Pure semiconductors face limitations in practical applications due to insufficient light absorption, charge carrier recombination, and low charge capacity. Diverse forms of photochromic hybrids (nanopowders, films, hydrogels, and multilayer structures) with rapid change, repeatability, and reversibility are possible via nanocustomization, surface/interface engineering, heterojunction fabrication, and complexing organic ligands. Manipulating the function of photochromic systems through light stimulation is becoming an attractive paradigm, divided into two branches: light-color complementarity and photoconductivity. This review examines the widely accepted photoresponsive principles and the still controversial energy transfer models. We emphasize the correlation between material properties and performance enhancement to inspire the rational structure design. The bottlenecks in current development are identified by analyzing application-specific innovation concepts, fabrication processes, and performance metrics. In addition, we present several perspectives to encourage meaningful multidisciplinary collaboration.
{"title":"Light-to-color conversion on MoO3, WO3, and Bi2WO6: from mechanism to materials and applications","authors":"Xu Dong, Yongjuan Dang, Zhengyu Wu, Yindong Tong, Xianhua Liu, Yiren Lu","doi":"10.1016/j.mtener.2024.101632","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101632","url":null,"abstract":"Because of their good chemical stability and excellent optical properties, MoO, WO, and BiWO are important in photochromism. Their light-to-color conversion is highly dependent on the electronic band structure and charge transfer, and they obey the mechanism of electron accumulation in semiconductors when excited within the bandgap. Pure semiconductors face limitations in practical applications due to insufficient light absorption, charge carrier recombination, and low charge capacity. Diverse forms of photochromic hybrids (nanopowders, films, hydrogels, and multilayer structures) with rapid change, repeatability, and reversibility are possible via nanocustomization, surface/interface engineering, heterojunction fabrication, and complexing organic ligands. Manipulating the function of photochromic systems through light stimulation is becoming an attractive paradigm, divided into two branches: light-color complementarity and photoconductivity. This review examines the widely accepted photoresponsive principles and the still controversial energy transfer models. We emphasize the correlation between material properties and performance enhancement to inspire the rational structure design. The bottlenecks in current development are identified by analyzing application-specific innovation concepts, fabrication processes, and performance metrics. In addition, we present several perspectives to encourage meaningful multidisciplinary collaboration.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"60 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The electron transport layer (ETL) of SnO with a rough surface, low conductivity, and poor wettability has limited its application in perovskite solar cells (PSCs). To address this issue, we propose a strategy that involves the simultaneous use of bulk dopant NaPF and polymer stabilizer NH-PEG-NH in SnO. NH-PEG-NH is compatible with both SnO and NaPF, resulting in a homogeneous distribution. Additionally, the intrinsic hydrophilicity of the polymer facilitates the formation of a continuous and ordered ETL with improved wettability. The inclusion of NaPF as a bulk dopant enhances conductivity and promotes upper perovskite growth. As a result, optimized morphology, aligned energy levels, improved crystallinity, and reduced bottom defects are achieved in the fabricated perovskite layer. The champion device exhibits a power conversion efficiency (PCE) of ∼23.36%, which is ∼11.88% higher than that of the pristine device (PCE = 20.88%). Notably, the reaches ∼1.2 V with only ∼0.08 V of loss, which is among the highest report one. Furthermore, the PCE of the modified unpackaged PSC was only attenuated by 25% after 250 h of maximum power point tracking in the environment. These results present an alternative and effective approach for preparing high-quality SnO ETL for efficient PSCs.
{"title":"Efficient perovskite solar cells based on polyoxyethylene bis(amine) and NaPF6 modified SnO2 layer with high open-circuit voltage","authors":"Xiangning Xu, Zhichao Lin, Qili Song, Hairui Duan, Hongye Dong, Xiaowen Gao, Osamah Alsalman, Cheng Mu, Xinhua Ouyang","doi":"10.1016/j.mtener.2024.101630","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101630","url":null,"abstract":"The electron transport layer (ETL) of SnO with a rough surface, low conductivity, and poor wettability has limited its application in perovskite solar cells (PSCs). To address this issue, we propose a strategy that involves the simultaneous use of bulk dopant NaPF and polymer stabilizer NH-PEG-NH in SnO. NH-PEG-NH is compatible with both SnO and NaPF, resulting in a homogeneous distribution. Additionally, the intrinsic hydrophilicity of the polymer facilitates the formation of a continuous and ordered ETL with improved wettability. The inclusion of NaPF as a bulk dopant enhances conductivity and promotes upper perovskite growth. As a result, optimized morphology, aligned energy levels, improved crystallinity, and reduced bottom defects are achieved in the fabricated perovskite layer. The champion device exhibits a power conversion efficiency (PCE) of ∼23.36%, which is ∼11.88% higher than that of the pristine device (PCE = 20.88%). Notably, the reaches ∼1.2 V with only ∼0.08 V of loss, which is among the highest report one. Furthermore, the PCE of the modified unpackaged PSC was only attenuated by 25% after 250 h of maximum power point tracking in the environment. These results present an alternative and effective approach for preparing high-quality SnO ETL for efficient PSCs.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"137 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-18DOI: 10.1016/j.mtener.2024.101628
Jinqing Lü, Xiaonan Huo, Weifeng Liu, Weiwei Sun, Sai Ji, Tingting You, Kexiang Wang, Wei Lü, Shiwei Wang
Hole transport layer (HTL)-free, all-inorganic CsPbIBr carbon-based perovskite solar cells (C-PSCs) have attracted much attention due to their low cost and excellent stability. The poor device efficiency is a barrier to constrain its commercialization, mainly due to the large amount of interfacial and bulk defects existed in inorganic perovskite films. In this study, an organic small molecule dicyandiamide (DCD) is added to the perovskite precursor as an additive to adjust the crystallization kinetics and passivate defects of inorganic perovskite films, simultaneously. It is demonstrated that the introduction of DCD can not only accelerate the transition process from intermediate-phase DMAPbI to inorganic perovskite, but also passivate defects through the Lewis acid-base interaction between cyano (CN), imine (CN) groups, and uncoordinated Pb. Meanwhile, the energy level alignment was optimized, which effectively improves the charge transport efficiency of CsPbIBr C-PSCs. As a result, optimized device shows an enhanced efficiency from 14.07% to 15.84%, accompanied by improved long-term stability.
{"title":"Additive engineering by dicyandiamide for high-performance carbon-based inorganic perovskite solar cells","authors":"Jinqing Lü, Xiaonan Huo, Weifeng Liu, Weiwei Sun, Sai Ji, Tingting You, Kexiang Wang, Wei Lü, Shiwei Wang","doi":"10.1016/j.mtener.2024.101628","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101628","url":null,"abstract":"Hole transport layer (HTL)-free, all-inorganic CsPbIBr carbon-based perovskite solar cells (C-PSCs) have attracted much attention due to their low cost and excellent stability. The poor device efficiency is a barrier to constrain its commercialization, mainly due to the large amount of interfacial and bulk defects existed in inorganic perovskite films. In this study, an organic small molecule dicyandiamide (DCD) is added to the perovskite precursor as an additive to adjust the crystallization kinetics and passivate defects of inorganic perovskite films, simultaneously. It is demonstrated that the introduction of DCD can not only accelerate the transition process from intermediate-phase DMAPbI to inorganic perovskite, but also passivate defects through the Lewis acid-base interaction between cyano (CN), imine (CN) groups, and uncoordinated Pb. Meanwhile, the energy level alignment was optimized, which effectively improves the charge transport efficiency of CsPbIBr C-PSCs. As a result, optimized device shows an enhanced efficiency from 14.07% to 15.84%, accompanied by improved long-term stability.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"61 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-31DOI: 10.1016/j.mtener.2024.101616
Hongmei Zhang, Changwu Lv, Jixi Guo, Talgar Shaymurat, Hongbin Yao
Developing enabling electrocatalysts for water splitting to operate at industrial-current-density is crucial for large-scale hydrogen production. Herein, a facile wet-chemistry strategy and scalable in-situ sulfidation technique are designed for formation of RuS nanocrystal-decorated amorphous NiS nanosheets vertically aligned on Ni foam (NF) (RuNiS/NF) as ultra-highly efficient electrocatalysts for electrochemical water splitting (EWS). The optimized electrocatalyst exhibits an excellent hydrogen evolution reaction (HER) performance, requiring overpotentials of only 15, 50, and 114 mV at 10, 100, and 1000 mA/cm, respectively, with robust stability at 10, 100, and 500 mA/cm for 120 h, ranking it one of the efficient electrocatalysts for industrial water electrolysis. The electron redistribution over heterointerfaces induces the modulatory electronic states of heterostructures, thus leading to the favorable adsorption behavior for reaction intermediates, enhancing intrinsic activity of active sites. Impressively, a RuNiS/NF||RuNiS/NF EWS device can afford industrial current densities of 10, 100, and 500 mA/cm at voltages of 1.55, 1.77, and 2.35 V, respectively, together with robust durability for over 50 h (@1000 mA/cm). This work provides an innovative approach to design unique heterostructures for industrial EWS via modulatory electronic states.
{"title":"In-situ construction of RuS2 nanocrystal-decorated amorphous NiSx nanosheets for industrial-current-density water splitting","authors":"Hongmei Zhang, Changwu Lv, Jixi Guo, Talgar Shaymurat, Hongbin Yao","doi":"10.1016/j.mtener.2024.101616","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101616","url":null,"abstract":"Developing enabling electrocatalysts for water splitting to operate at industrial-current-density is crucial for large-scale hydrogen production. Herein, a facile wet-chemistry strategy and scalable in-situ sulfidation technique are designed for formation of RuS nanocrystal-decorated amorphous NiS nanosheets vertically aligned on Ni foam (NF) (RuNiS/NF) as ultra-highly efficient electrocatalysts for electrochemical water splitting (EWS). The optimized electrocatalyst exhibits an excellent hydrogen evolution reaction (HER) performance, requiring overpotentials of only 15, 50, and 114 mV at 10, 100, and 1000 mA/cm, respectively, with robust stability at 10, 100, and 500 mA/cm for 120 h, ranking it one of the efficient electrocatalysts for industrial water electrolysis. The electron redistribution over heterointerfaces induces the modulatory electronic states of heterostructures, thus leading to the favorable adsorption behavior for reaction intermediates, enhancing intrinsic activity of active sites. Impressively, a RuNiS/NF||RuNiS/NF EWS device can afford industrial current densities of 10, 100, and 500 mA/cm at voltages of 1.55, 1.77, and 2.35 V, respectively, together with robust durability for over 50 h (@1000 mA/cm). This work provides an innovative approach to design unique heterostructures for industrial EWS via modulatory electronic states.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"38 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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