Composites Science and Technology, Год журнала: 2024, Номер 256, С. 110769 - 110769
Опубликована: Июль 19, 2024
Язык: Английский
Materials Science for Energy Technologies, Год журнала: 2024, Номер 8, С. 44 - 65
Опубликована: Июль 26, 2024
Hydrogen has attracted growing research interest due to its exceptionally high energy per mass content and being a clean carrier, unlike the widely used hydrocarbon fuels. With possibility of long-term storage re-electrification, hydrogen promises promote effective utilization renewable sustainable resources. Clean can be produced through renewable-powered water electrolysis process. Although alkaline is currently mature commercially available technology for production, it several shortcomings that hinder integration with intermittent fluctuating sources. The proton exchange membrane (PEMWE) been developed offer voltage efficiencies at current densities. Besides, PEMWE cells are characterized by fast system response power, enabling operations broader partial power load ranges while consistently delivering high-purity low ohmic losses. Recently, much effort devoted improving efficiency, performance, durability, economy cells. activities in this context include investigations different cell component materials, protective coatings, material characterizations, as well synthesis analysis new electrocatalysts enhanced electrochemical activity stability minimized use noble metals. Further, many modeling studies have reported analyze performance considering electrochemistry, overvoltage, thermodynamics. Thus, imperative review compile recent covering multiple aspects one literature present advancements limitations field. This article offers comprehensive state-of-the-art It compiles on each discusses how characteristics these components affect overall performance. In addition, various catalyst materials reviewed. thermodynamics electrochemistry electrolytic splitting described, inherent overvoltage elucidated. modeling, aimed analyzing cells, compiled. Overall, provides components, electrocatalysts, but pursuit seamless transition energy.
Язык: Английский
Процитировано
26
Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 137449 - 137449
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
3
eScience, Год журнала: 2024, Номер unknown, С. 100295 - 100295
Опубликована: Июль 1, 2024
The development of low-cost and efficient electrocatalysts for oxygen evolution reaction (OER) in acid electrolytes is critical to the widespread implementation proton electrolyte membrane water electrolyzers (PEMWE) towards carbon neutralization. Noble metal Ir- Ru-based materials are state-of-the-art catalysts but still suffer from prohibitive price scarcity. In this context, a variety noble metal-free have been developed decrease cost PEMWE. review, we first summarize activity expression mechanism stability issues non-precious catalysts, highlighting origins performance degradation possible mitigation strategies. Then, systematically review several recently focusing on design rationale structure-performance relation. Finally, prospects non-noble prospected, with potential challenges practical applications presented.
Язык: Английский
Процитировано
16
Advanced Science, Год журнала: 2024, Номер 11(25)
Опубликована: Апрель 22, 2024
Abstract The proton exchange membrane water electrolyzer (PEMWE), crucial for green hydrogen production, is challenged by the scarcity and high cost of iridium‐based materials. Cobalt oxides, as ideal electrocatalysts oxygen evolution reaction (OER), have not been extensively applied in PEMWE, due to extremely voltage poor stability at large current density, caused complicated structural variations cobalt compounds during OER process. Thus, authors sought introduce chromium into a spinel (Co 3 O 4 ) catalyst regulate electronic structure cobalt, exhibiting higher oxidation state increased Co–O covalency with stable structure. In‐depth operando characterizations theoretical calculations revealed that activated adaptable redox behavior are facilitating its activity. Both turnover frequency mass activity Cr‐doped Co (CoCr) 1.67 V (vs RHE) over eight times than those as‐synthesized . obtained CoCr achieved 1500 mA cm −2 2.17 exhibited notable durability extended operation periods – 100 h 500 , demonstrating promising application PEMWE industry.
Язык: Английский
Процитировано
10
Small, Год журнала: 2024, Номер unknown
Опубликована: Сен. 2, 2024
Abstract Electrochemical upcycling of end‐of‐life polyethylene terephthalate (PET) using renewable electricity offers a route to generate valuable chemicals while processing plastic wastes. However, it remains huge challenge design an electrocatalyst with reliable structure‐property relationships for PET valorization. Herein, spinel Co 3 O 4 rich oxygen vacancies improved activity toward formic acid (FA) production from hydrolysate is reported. Experimental investigations combined theoretical calculations reveal that incorporation V into not only promotes the generation reactive hydroxyl species (OH * ) at adjacent tetrahedral 2+ (Co2+ Td), but also induces electronic structure transition octahedral 3+ (Co3+ Oh) Oh), which typically functions as highly‐active catalytic sites ethylene glycol (EG) chemisorption. Moreover, enlarged Co‐O covalency induced by facilitates electron transfer EG OH via Co2+ Oh‐O‐Co2+ Td interaction and following C─C bond cleavage direct oxidation glyoxal intermediate pathway. As result, ‐Co catalyst exhibits high half‐cell oxidation, Faradaic efficiency (91%) productivity (1.02 mmol cm −2 h −1 FA. Lastly, demonstrated hundred gram‐scale formate crystals can be produced real‐world bottles two‐electrode electroreforming, yield 82%.
Язык: Английский
Процитировано
7
Coordination Chemistry Reviews, Год журнала: 2025, Номер 536, С. 216651 - 216651
Опубликована: Апрель 6, 2025
Язык: Английский
Процитировано
1
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Renewable and Sustainable Energy Reviews, Год журнала: 2025, Номер 215, С. 115631 - 115631
Опубликована: Март 18, 2025
Язык: Английский
Процитировано
0
Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown
Опубликована: Май 12, 2025
Abstract Proton exchange membrane water electrolysis (PEMWE) offers several advantages over alkaline electrolysis, including a more compact design, faster response time, lower ohmic losses, and higher gas purity. However, the harsh acidic conditions required for PEMWE have led to use of noble metal‐based electrocatalysts oxygen evolution reaction (OER), particularly ruthenium (Ru) iridium (Ir), which are both scarce costly. In recent years, significant progress has been made in development cobalt (Co)‐based electrocatalysts, exhibit promising performance OER, providing sustainable cost‐effective alternative precious metals. This review provides comprehensive summary, classification, discussion latest Co‐based catalysts OER. Key insights into fundamental mechanisms as well relationships between catalytic activity stability, highlighted. Additionally, examines various synthesis strategies highlights methods enhance their OER performance. Finally, concludes by addressing current challenges field offering future research directions aimed at developing high‐performance materials efficient under conditions.
Язык: Английский
Процитировано
0
Composites Science and Technology, Год журнала: 2024, Номер 256, С. 110769 - 110769
Опубликована: Июль 19, 2024
Язык: Английский
Процитировано
1