Pub Date : 2025-04-26DOI: 10.1016/j.powera.2025.100177
Jaeseok Lee , Sungmin Kang , Heedae Lee , Kunho Lee , Gwangwoo Han , Sanghun Lee , Dong-Hyun Peck , Joongmyeon Bae
Metal-supported solid oxide fuel cells (SOFCs), which have received much attention based on their high thermo-mechanical strength, are generally fabricated under a reducing atmosphere to prevent oxidation of the metal. The fabrication of metal-supported SOFCs under an oxidizing atmosphere resolves certain inherent issues related to fabrication in a reducing atmosphere, such as instability of the cathode materials and the inter-diffusion phenomenon. On the other hand, this approach limits the process temperature to prevent the excessive oxidation of the metal. In this work, a means by which to fabricate metal-supported SOFCs under an air environment is developed with a thin-film electrolyte, with deposition at room temperature. By introducing a pore-reducing layer while also controlling the viscosity of the coating solution, the surface of the anode is designed to be dense and flat, enabling the stable deposition of a dense thin-film electrolyte. Notable electrochemical performance is exhibited considering the limited process temperature, which must remain below 1000 °C. Through a durability test including temperature cycling and a post-mortem analysis, remarkable robustness of the metal-supported SOFCs is observed.
{"title":"Development of metal-supported solid oxide fuel cells with a thin-film electrolyte under an oxidizing atmosphere","authors":"Jaeseok Lee , Sungmin Kang , Heedae Lee , Kunho Lee , Gwangwoo Han , Sanghun Lee , Dong-Hyun Peck , Joongmyeon Bae","doi":"10.1016/j.powera.2025.100177","DOIUrl":"10.1016/j.powera.2025.100177","url":null,"abstract":"<div><div>Metal-supported solid oxide fuel cells (SOFCs), which have received much attention based on their high thermo-mechanical strength, are generally fabricated under a reducing atmosphere to prevent oxidation of the metal. The fabrication of metal-supported SOFCs under an oxidizing atmosphere resolves certain inherent issues related to fabrication in a reducing atmosphere, such as instability of the cathode materials and the inter-diffusion phenomenon. On the other hand, this approach limits the process temperature to prevent the excessive oxidation of the metal. In this work, a means by which to fabricate metal-supported SOFCs under an air environment is developed with a thin-film electrolyte, with deposition at room temperature. By introducing a pore-reducing layer while also controlling the viscosity of the coating solution, the surface of the anode is designed to be dense and flat, enabling the stable deposition of a dense thin-film electrolyte. Notable electrochemical performance is exhibited considering the limited process temperature, which must remain below 1000 °C. Through a durability test including temperature cycling and a post-mortem analysis, remarkable robustness of the metal-supported SOFCs is observed.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"33 ","pages":"Article 100177"},"PeriodicalIF":5.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.powera.2025.100176
Öykü Simsek , Philip Zimmer , Simon Muench , Ulrich S. Schubert
In this study, we developed gel polymer electrolytes (GPEs) containing cyclic carbonate side chains produced via UV-induced free radical polymerization, a fast and cost-efficient synthesis route, for Li-organic batteries. Cyclic carbonate methacrylate (CCMA) was copolymerized with diethylene glycol methyl ether methacrylate (DEGMEM) for 1 h. Then the resultant polymer films were swelled in 1 M LiPF6 in EC/DMC (50/50, v/v) with an electrolyte uptake of 500 %. These novel GPEs with an ionic conductivity of 1.1 mS cm−1 at 20 °C were electrochemically tested in Li//PTMA cells in comparison with LP30. They were found to show maximum discharge capacities (62.6 vs. 63.9 mAh g−1, GPE vs. LP30) at 0.1 C in addition to better compatibility with Li anodes (25.7 vs. 40.2 mV overpotential in Li stripping/plating tests) and a comparable electrochemical stability window. The results confirm that these GPEs are promising candidates for Li-organic batteries.
{"title":"Photopolymerized gel polymer electrolytes with cyclic carbonate side chains for Li-organic batteries at room temperature","authors":"Öykü Simsek , Philip Zimmer , Simon Muench , Ulrich S. Schubert","doi":"10.1016/j.powera.2025.100176","DOIUrl":"10.1016/j.powera.2025.100176","url":null,"abstract":"<div><div>In this study, we developed gel polymer electrolytes (GPEs) containing cyclic carbonate side chains produced <em>via</em> UV-induced free radical polymerization, a fast and cost-efficient synthesis route, for Li-organic batteries. Cyclic carbonate methacrylate (CCMA) was copolymerized with diethylene glycol methyl ether methacrylate (DEGMEM) for 1 h. Then the resultant polymer films were swelled in 1 M LiPF<sub>6</sub> in EC/DMC (50/50, v/v) with an electrolyte uptake of 500 %. These novel GPEs with an ionic conductivity of 1.1 mS cm<sup>−1</sup> at 20 °C were electrochemically tested in Li//PTMA cells in comparison with LP30. They were found to show maximum discharge capacities (62.6 <em>vs.</em> 63.9 mAh g<sup>−1</sup>, GPE <em>vs.</em> LP30) at 0.1 C in addition to better compatibility with Li anodes (25.7 <em>vs</em>. 40.2 mV overpotential in Li stripping/plating tests) and a comparable electrochemical stability window. The results confirm that these GPEs are promising candidates for Li-organic batteries.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"33 ","pages":"Article 100176"},"PeriodicalIF":5.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Voltage reconstruction is a common technique used in estimation of degradation modes for aged Li-ion batteries. For real-life implementation, it is desirable for voltage reconstruction to work for partial charging as real-life batteries are rarely charged fully. In this pursuit, the presented work investigates a common practice of using truncated data from full charge as a representation of partial charging in voltage reconstruction. Usage of truncated data is prevalent despite known deviations between data collected from partial and full charge cycles and has resulted in a misconception that accurate voltage reconstruction is achievable using partial charging data. Therefore, voltage reconstruction errors between models parametrised using truncated data and actual partial charging data were compared. Results show a four-fold increase in error when using truncated data, which indicates that truncated data is an inappropriate proxy of partial charge. The findings also imply that partial charging is a limitation of voltage reconstruction modelling not highlighted before due to usage of truncated data. This limitation must be addressed to improve the applicability of voltage reconstruction. The study also emphasises the need to generate new battery degradation datasets with appropriate inclusion of partial charging data to enable the development of accurate and holistic models.
{"title":"Li-ion battery voltage curve reconstruction using partial charge profiles: Actual v/s truncated data","authors":"Anubhav Singh , Puritut Nakhanivej , Yazmin Monaghan , Melanie J. Loveridge , Anup Barai","doi":"10.1016/j.powera.2025.100175","DOIUrl":"10.1016/j.powera.2025.100175","url":null,"abstract":"<div><div>Voltage reconstruction is a common technique used in estimation of degradation modes for aged Li-ion batteries. For real-life implementation, it is desirable for voltage reconstruction to work for partial charging as real-life batteries are rarely charged fully. In this pursuit, the presented work investigates a common practice of using truncated data from full charge as a representation of partial charging in voltage reconstruction. Usage of truncated data is prevalent despite known deviations between data collected from partial and full charge cycles and has resulted in a misconception that accurate voltage reconstruction is achievable using partial charging data. Therefore, voltage reconstruction errors between models parametrised using truncated data and actual partial charging data were compared. Results show a four-fold increase in error when using truncated data, which indicates that truncated data is an inappropriate proxy of partial charge. The findings also imply that partial charging is a limitation of voltage reconstruction modelling not highlighted before due to usage of truncated data. This limitation must be addressed to improve the applicability of voltage reconstruction. The study also emphasises the need to generate new battery degradation datasets with appropriate inclusion of partial charging data to enable the development of accurate and holistic models.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"33 ","pages":"Article 100175"},"PeriodicalIF":5.4,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-02DOI: 10.1016/j.powera.2025.100174
Oliver Krätzig, Florian Degen
The Lithium-Ion Battery is attributed an enabling role for achieving climate policy goals by accelerating the shift of the mobility sector to renewable energy usage and improving renewable energy integration into the energy infrastructure through stationary storage. Thus, challenges related to further optimization of battery technology and its production that need to be tackled to achieve the set goals are manifold. Effective research funding planning is needed to efficiently use resources for advancing cell technologies and its production. However, despite being essential for identifying and prioritizing innovation needs based on technological performance, we perceive that an overview on how current issues in battery cell production hold for impact on a holistic operation site perspective is lacking. Thus, we aim at developing comprehensive process overview specifications for state-of-the-art lithium-ion battery cell production by applying a systematic, methodical approach as well as to derive critical problems and opportunities for targeted innovations application. We contribute to scientific literature by linking process streams and operational innovations in battery cell manufacturing to production management literature. Our findings furthermore have implications for both public research and industrial managers providing guidance on prioritizing development projects aiming at process management efficiency in battery cell manufacturing.
{"title":"A comprehensive review and analysis of technology performance characteristics of lithium-ion battery cell manufacturing: Introducing a Call-for-Innovation-Heatmap","authors":"Oliver Krätzig, Florian Degen","doi":"10.1016/j.powera.2025.100174","DOIUrl":"10.1016/j.powera.2025.100174","url":null,"abstract":"<div><div>The Lithium-Ion Battery is attributed an enabling role for achieving climate policy goals by accelerating the shift of the mobility sector to renewable energy usage and improving renewable energy integration into the energy infrastructure through stationary storage. Thus, challenges related to further optimization of battery technology and its production that need to be tackled to achieve the set goals are manifold. Effective research funding planning is needed to efficiently use resources for advancing cell technologies and its production. However, despite being essential for identifying and prioritizing innovation needs based on technological performance, we perceive that an overview on how current issues in battery cell production hold for impact on a holistic operation site perspective is lacking. Thus, we aim at developing comprehensive process overview specifications for state-of-the-art lithium-ion battery cell production by applying a systematic, methodical approach as well as to derive critical problems and opportunities for targeted innovations application. We contribute to scientific literature by linking process streams and operational innovations in battery cell manufacturing to production management literature. Our findings furthermore have implications for both public research and industrial managers providing guidance on prioritizing development projects aiming at process management efficiency in battery cell manufacturing.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"33 ","pages":"Article 100174"},"PeriodicalIF":5.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-17DOI: 10.1016/j.powera.2025.100173
Tim Greitemeier , Achim Kampker , Jens Tübke , Simon Lux
Battery production for electric vehicles (EVs) necessitates a supply chain capable of supporting the exploitation of a variety of raw materials. Lithium, nickel, manganese, and cobalt are of particular significance for the dominant lithium-ion battery (LIB) technology, primarily relying on lithium iron phosphate (LFP) and lithium nickel manganese cobalt oxide (NMC) cathodes. Geographically, the global supply is heavily reliant on China with competition expected to intensify. In light of this, the questions of how global competition manifests at the company level and whether regions capture their share of the supply chain through domestic companies remain unanswered. These are addressed by analyzing the companies behind each supply chain sector and the respective raw materials. The results demonstrate that China, Europe, and the United States of America (USA) exhibit the most pronounced ownership across the supply chain, acquiring the largest foreign shares in the mining sector. Overall, China leads in a total of eleven out of the 12 investigated sectors, with its peak for LFP production at above 98 %. This preeminence, coupled with the substantial output of South Korea, Europe, and Japan in NMC production, the latter represents a viable target for mitigating supply chain vulnerabilities and attaining greater growth and sovereignty.
{"title":"China's hold on the lithium-ion battery supply chain: Prospects for competitive growth and sovereign control","authors":"Tim Greitemeier , Achim Kampker , Jens Tübke , Simon Lux","doi":"10.1016/j.powera.2025.100173","DOIUrl":"10.1016/j.powera.2025.100173","url":null,"abstract":"<div><div>Battery production for electric vehicles (EVs) necessitates a supply chain capable of supporting the exploitation of a variety of raw materials. Lithium, nickel, manganese, and cobalt are of particular significance for the dominant lithium-ion battery (LIB) technology, primarily relying on lithium iron phosphate (LFP) and lithium nickel manganese cobalt oxide (NMC) cathodes. Geographically, the global supply is heavily reliant on China with competition expected to intensify. In light of this, the questions of how global competition manifests at the company level and whether regions capture their share of the supply chain through domestic companies remain unanswered. These are addressed by analyzing the companies behind each supply chain sector and the respective raw materials. The results demonstrate that China, Europe, and the United States of America (USA) exhibit the most pronounced ownership across the supply chain, acquiring the largest foreign shares in the mining sector. Overall, China leads in a total of eleven out of the 12 investigated sectors, with its peak for LFP production at above 98 %. This preeminence, coupled with the substantial output of South Korea, Europe, and Japan in NMC production, the latter represents a viable target for mitigating supply chain vulnerabilities and attaining greater growth and sovereignty.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"32 ","pages":"Article 100173"},"PeriodicalIF":5.4,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-08DOI: 10.1016/j.powera.2025.100172
Hsin-Yi Lai , Hung-Ju Lin , Yen-Hsin Chan
The aim of this paper is to enhance the efficiency of the Solid Oxide Fuel Cell (SOFC) system through various system designs and parameters. To evaluate the effects of design configurations, the impact of high-temperature/low-temperature anode off-gas recycle (HT/LT-AGR) on system performance was investigated by calculating the entropy using the second law of thermodynamics. By analyzing the system with different AGR designs and considering the increasing entropy of heat components in the SOFC system, the efficiency calculations can be more practical and accurate.
In this study, the working efficiency of the SOFC system with HT-AGR is 56.215 %, which is 4.7 % higher than with LT-AGR. The results show that the heat exchanger (HEX) experiences the largest increasing entropy during the power generation process due to the significant temperature difference. At the end of this project, a CO2 reformer will be used to optimize the system, decreasing the mole rate of CO2 and CH4 while increasing the mole rate of H2. Based on the simulation results, using a CO2 reformer can increase the mole rate of H2 by 3 %, improving the system efficiency up to 56.97 %.
{"title":"Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change","authors":"Hsin-Yi Lai , Hung-Ju Lin , Yen-Hsin Chan","doi":"10.1016/j.powera.2025.100172","DOIUrl":"10.1016/j.powera.2025.100172","url":null,"abstract":"<div><div>The aim of this paper is to enhance the efficiency of the Solid Oxide Fuel Cell (SOFC) system through various system designs and parameters. To evaluate the effects of design configurations, the impact of high-temperature/low-temperature anode off-gas recycle (HT/LT-AGR) on system performance was investigated by calculating the entropy using the second law of thermodynamics. By analyzing the system with different AGR designs and considering the increasing entropy of heat components in the SOFC system, the efficiency calculations can be more practical and accurate.</div><div>In this study, the working efficiency of the SOFC system with HT-AGR is 56.215 %, which is 4.7 % higher than with LT-AGR. The results show that the heat exchanger (HEX) experiences the largest increasing entropy during the power generation process due to the significant temperature difference. At the end of this project, a <sub>CO2</sub> reformer will be used to optimize the system, decreasing the mole rate of <sub>CO2</sub> and CH4 while increasing the mole rate of H2. Based on the simulation results, using a <sub>CO2</sub> reformer can increase the mole rate of H2 by 3 %, improving the system efficiency up to 56.97 %.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"32 ","pages":"Article 100172"},"PeriodicalIF":5.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-07DOI: 10.1016/j.powera.2025.100170
Andrei Kulikovsky
In electrochemical impedance spectroscopy experiments with PEM fuel cells, the applied AC current induces oscillations of the mass flow across the gas diffusion layer/cathode channel interface. These oscillations perturb the air flow velocity and pressure in the cathode channel. By analogy with Berman’s approach, the transient Navier–Stokes equations for air flow in a channel with a permeable wall are reduced to a single equation for the transverse profile of the streamwise flow velocity (SFV). Linearization and Fourier-transformation of this equation leads to an ODE for the SFV perturbation amplitude. The numerical solution shows that harmonic perturbation of the cell current density generates oscillations of the pressure gradient and SFV. As the frequency increases, the transverse shape of the SFV oscillations amplitude flattens in the main body of the flow, while the peaks form at the channel walls. Averaged across the channel amplitudes of pressure gradient and SFV oscillations linearly increase along the channel. Analytical formulas for incorporation of these effects into impedance models for PEM fuel/electrolysis cell are derived.
{"title":"Cathode flow velocity and pressure gradient oscillations in impedance spectroscopy of PEM fuel cells","authors":"Andrei Kulikovsky","doi":"10.1016/j.powera.2025.100170","DOIUrl":"10.1016/j.powera.2025.100170","url":null,"abstract":"<div><div>In electrochemical impedance spectroscopy experiments with PEM fuel cells, the applied AC current induces oscillations of the mass flow across the gas diffusion layer/cathode channel interface. These oscillations perturb the air flow velocity and pressure in the cathode channel. By analogy with Berman’s approach, the transient Navier–Stokes equations for air flow in a channel with a permeable wall are reduced to a single equation for the transverse profile of the streamwise flow velocity (SFV). Linearization and Fourier-transformation of this equation leads to an ODE for the SFV perturbation amplitude. The numerical solution shows that harmonic perturbation of the cell current density generates oscillations of the pressure gradient and SFV. As the frequency increases, the transverse shape of the SFV oscillations amplitude flattens in the main body of the flow, while the peaks form at the channel walls. Averaged across the channel amplitudes of pressure gradient and SFV oscillations linearly increase along the channel. Analytical formulas for incorporation of these effects into impedance models for PEM fuel/electrolysis cell are derived.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"32 ","pages":"Article 100170"},"PeriodicalIF":5.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-05DOI: 10.1016/j.powera.2025.100171
T. Lange , M. Dietrich , H. Schlottmann , V. Valkov , V. Mackert , I. Radev , H. Hoster
Per- and polyfluoroalkyl substances (PFAS) have been linked to different adverse health effects, highlighting the need to address the examination of all potential emission sources. This also includes applications that are used in key components of the hydrogen economy using proton exchange membranes, e.g. PEM fuel cells. This study analyzes PFAS concentrations in product water from two light- and one heavy-duty fuel cell electric vehicles (FCEV), identifying two to five distinct PFAS (including 6:2 FTS, PFBuA, PFHpA, PFHxA, PFOA, HFPO-DA, and PFPeA) in each sample. However, at this juncture, it is not yet possible to make a well-founded statement as to which components (e.g., MEA or BOP) release these substances.
The PFAS concentration was found to be low overall in light-duty vehicles, while in heavy-duty vehicles, elevated levels were observed. Despite these findings, the product water from all vehicles remains within the non-critical range according to current German national PFAS guidelines. However, the results highlight the need for further research and effective strategies to mitigate PFAS emissions from PEM fuel cells in the future.
{"title":"Investigating PFAS emissions of light- and heavy-duty fuel cell electric vehicles","authors":"T. Lange , M. Dietrich , H. Schlottmann , V. Valkov , V. Mackert , I. Radev , H. Hoster","doi":"10.1016/j.powera.2025.100171","DOIUrl":"10.1016/j.powera.2025.100171","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) have been linked to different adverse health effects, highlighting the need to address the examination of all potential emission sources. This also includes applications that are used in key components of the hydrogen economy using proton exchange membranes, e.g. PEM fuel cells. This study analyzes PFAS concentrations in product water from two light- and one heavy-duty fuel cell electric vehicles (FCEV), identifying two to five distinct PFAS (including 6:2 FTS, PFBuA, PFHpA, PFHxA, PFOA, HFPO-DA, and PFPeA) in each sample. However, at this juncture, it is not yet possible to make a well-founded statement as to which components (e.g., MEA or BOP) release these substances.</div><div>The PFAS concentration was found to be low overall in light-duty vehicles, while in heavy-duty vehicles, elevated levels were observed. Despite these findings, the product water from all vehicles remains within the non-critical range according to current German national PFAS guidelines. However, the results highlight the need for further research and effective strategies to mitigate PFAS emissions from PEM fuel cells in the future.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"32 ","pages":"Article 100171"},"PeriodicalIF":5.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143319985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-25DOI: 10.1016/j.powera.2025.100169
Ji Woo Sohn , Hongjun Jang , Young-Su Kim , Donghwan Kim , Sungho Hwang , Yoonmook Kang
In the photovoltaic (PV) industry, building-integrated photovoltaics (BIPV) are promising products for zero-energy buildings that offer solutions to the issue of limited space in urban areas. BIPV modules offer not only power production but also significant visual appeal. This study aims to assess the aesthetic qualities of BIPV using patterned glass. We evaluate the energy yield of BIPV performance compared with conventional modules in a vertically oriented south-facing system under Korean weather conditions. Product characteristics such as the external quantum efficiency (EQE) spectrum, cell-to-module (CTM) conversion ratio, and power under tilted light conditions are analyzed. Unlike previous studies that report lower energy yields in BIPV systems, this BIPV module with patterned glass exhibits only a 0.5 % reduction in energy yield because of the lower open-circuit voltage (Voc) caused by the thicker glass (5 mm) compared to the reference glass (3.2 mm). In contrast, the short-circuit current (Isc) in the field is higher, likely due to the morphology of the patterned glass and the tilted incident light under Korean summer conditions. This result suggests BIPV modules using patterned glass are viable candidates for aesthetically pleasing, south-facing, and vertical systems in zero-energy buildings.
{"title":"Performance comparison of a building-integrated photovoltaics (BIPV) module with patterned glass in Korean weather","authors":"Ji Woo Sohn , Hongjun Jang , Young-Su Kim , Donghwan Kim , Sungho Hwang , Yoonmook Kang","doi":"10.1016/j.powera.2025.100169","DOIUrl":"10.1016/j.powera.2025.100169","url":null,"abstract":"<div><div>In the photovoltaic (PV) industry, building-integrated photovoltaics (BIPV) are promising products for zero-energy buildings that offer solutions to the issue of limited space in urban areas. BIPV modules offer not only power production but also significant visual appeal. This study aims to assess the aesthetic qualities of BIPV using patterned glass. We evaluate the energy yield of BIPV performance compared with conventional modules in a vertically oriented south-facing system under Korean weather conditions. Product characteristics such as the external quantum efficiency (EQE) spectrum, cell-to-module (CTM) conversion ratio, and power under tilted light conditions are analyzed. Unlike previous studies that report lower energy yields in BIPV systems, this BIPV module with patterned glass exhibits only a 0.5 % reduction in energy yield because of the lower open-circuit voltage (Voc) caused by the thicker glass (5 mm) compared to the reference glass (3.2 mm). In contrast, the short-circuit current (Isc) in the field is higher, likely due to the morphology of the patterned glass and the tilted incident light under Korean summer conditions. This result suggests BIPV modules using patterned glass are viable candidates for aesthetically pleasing, south-facing, and vertical systems in zero-energy buildings.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"32 ","pages":"Article 100169"},"PeriodicalIF":5.4,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01DOI: 10.1016/j.powera.2024.100165
Bingjie Zhou , Yuankai Shao , Weikang Zhu , Shuoyao Yin , Zhenguo Li , Xiaoning Ren , Anqi Dong , Xi Liu , Yatao Liu , Yaodong Hao , Bin Ren , Wei Liu
The growing energy crisis has intensified the need for efficient energy storage solutions. Biomass has emerged as a promising resource for novel energy storage devices. Lignosulfonate, a byproduct of the forestry and pulp industries, contains quinone groups and has enormous potential for electrochemical energy storage. However, due to its poor electrical conductivity, this material must be combined with conductive materials to improve the energy storage efficiency. Carbon materials, particularly porous carbon, are ideal conductive substrates because of their high electrical conductivity, affordability, and ease of fabrication. This study demonstrates the synergistic effects of lignosulfonate/nanocarbon composites (LS/NC), in which heteroatom doping, high specific surface area, and quinone groups considerably enhance their electrochemical performance. Nanocarbon (NC) provides ion diffusion channels with low internal resistance and a large double-layer reaction area, promoting efficient electrolyte ion diffusion and transport. In addition, the introduction of oxygen and sulfur heteroatoms not only increases the material's hydrophilicity but also provides polar surfaces and accessible pseudocapacitive sites. Under acidic conditions, the LS/NC composite achieved a specific capacitance of 571 F g−1 at a discharge rate of 1 A g−1—approximately double that of NC alone (279 F g−1). These findings provide notable advancements in the development of efficient energy storage devices.
{"title":"Synergistic enhancement of pseudocapacitance behavior in supercapacitors through porous carbon and lignosulfonate integration","authors":"Bingjie Zhou , Yuankai Shao , Weikang Zhu , Shuoyao Yin , Zhenguo Li , Xiaoning Ren , Anqi Dong , Xi Liu , Yatao Liu , Yaodong Hao , Bin Ren , Wei Liu","doi":"10.1016/j.powera.2024.100165","DOIUrl":"10.1016/j.powera.2024.100165","url":null,"abstract":"<div><div>The growing energy crisis has intensified the need for efficient energy storage solutions. Biomass has emerged as a promising resource for novel energy storage devices. Lignosulfonate, a byproduct of the forestry and pulp industries, contains quinone groups and has enormous potential for electrochemical energy storage. However, due to its poor electrical conductivity, this material must be combined with conductive materials to improve the energy storage efficiency. Carbon materials, particularly porous carbon, are ideal conductive substrates because of their high electrical conductivity, affordability, and ease of fabrication. This study demonstrates the synergistic effects of lignosulfonate/nanocarbon composites (LS/NC), in which heteroatom doping, high specific surface area, and quinone groups considerably enhance their electrochemical performance. Nanocarbon (NC) provides ion diffusion channels with low internal resistance and a large double-layer reaction area, promoting efficient electrolyte ion diffusion and transport. In addition, the introduction of oxygen and sulfur heteroatoms not only increases the material's hydrophilicity but also provides polar surfaces and accessible pseudocapacitive sites. Under acidic conditions, the LS/NC composite achieved a specific capacitance of 571 F g<sup>−1</sup> at a discharge rate of 1 A g<sup>−1</sup>—approximately double that of NC alone (279 F g<sup>−1</sup>). These findings provide notable advancements in the development of efficient energy storage devices.</div></div>","PeriodicalId":34318,"journal":{"name":"Journal of Power Sources Advances","volume":"31 ","pages":"Article 100165"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号