Journal of Energy Chemistry最新文献_第10页

Hard Lewis acid CeO2 and Cl− intercalation induce OH− enriched and strong Cl− repulsive microenvironment for ultra-stable industrialized seawater electrolysis 硬Lewis酸CeO2和Cl -嵌入诱导了OH -富集和强Cl -排斥的超稳定工业化海水电解微环境

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-29 DOI: 10.1016/j.jechem.2025.04.049

Xueran Shen , Wenchao Liu , Mingzhe Liu , Haibo Jin , Yuefeng Su , Ning Li , Jingbo Li , Zhiyong Xiong , Caihong Feng , Jianxin Kang , Lin Guo

{"title":"Hard Lewis acid CeO2 and Cl− intercalation induce OH− enriched and strong Cl− repulsive microenvironment for ultra-stable industrialized seawater electrolysis","authors":"Xueran Shen , Wenchao Liu , Mingzhe Liu , Haibo Jin , Yuefeng Su , Ning Li , Jingbo Li , Zhiyong Xiong , Caihong Feng , Jianxin Kang , Lin Guo","doi":"10.1016/j.jechem.2025.04.049","DOIUrl":"10.1016/j.jechem.2025.04.049","url":null,"abstract":"<div><div>Direct electrolysis of seawater offers a transformative technology for sustainable hydrogen production, circumventing the constraint of freshwater scarcity. However, the serious electrode corrosion and competitive chloride oxidation reactions make oxygen evolution reaction (OER) in seawater extremely challenging. Herein, the low-cost and scalable CoFe layered double hydroxides with Cl− intercalation and decorated with Ce(OH)3 (named as CoFe-Cl−/Ce(OH)3) catalyst is synthesized via rapid electrodeposition under ambient conditions, which is quickly reconstructed into a CeO2 decorated and Cl− intercalated CoFeOOH (CoFeOOH-Cl−/CeO2) during OER. Theoretical investigation reveals that Cl− intercalation weakens the adsorption ability of Cl− on Co/Fe atoms and hinders unfavorable coupling with chloride, thereby preventing the chlorine corrosion process and enhancing catalytic stability and activity. The CeO2 with hard Lewis acidity preferentially binds to OH− with harder Lewis base to ensure the OH− rich microenvironment around catalyst even under high current operating conditions, thus further enhancing stability and improving OER activity. The functionalized CoFe-Cl−/Ce(OH)3 delivers 1000 mA cm−2 current density at only 329 mV overpotential with excellent stability for 1000 h under alkaline seawater. Electrochemical experiments elucidate the OER catalytic mechanism in which CeO2 serves as a co-catalyst for enriching OH− and CoFeOOH-Cl− is the active species. Our work is a substantial step towards achieving massive and sustainable production of hydrogen fuel from immense seawater.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 567-576"},"PeriodicalIF":13.1,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trimetallic CuCoRu catalyst with multiple active sites for industrial-scale nitrate electroreduction to ammonia 具有多个活性位点的三金属CuCoRu催化剂，用于工业规模硝酸盐电还原制氨

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-29 DOI: 10.1016/j.jechem.2025.04.048

Xiaoxue Zhang , Li Gan , Zhen-Feng Huang , Ru Jia , Lun Pan , Chengxiang Shi , Xiangwen Zhang , Guidong Yang , Ji-Jun Zou

{"title":"Trimetallic CuCoRu catalyst with multiple active sites for industrial-scale nitrate electroreduction to ammonia","authors":"Xiaoxue Zhang , Li Gan , Zhen-Feng Huang , Ru Jia , Lun Pan , Chengxiang Shi , Xiangwen Zhang , Guidong Yang , Ji-Jun Zou","doi":"10.1016/j.jechem.2025.04.048","DOIUrl":"10.1016/j.jechem.2025.04.048","url":null,"abstract":"<div><div>The electrochemical nitrate reduction reaction (NO3−RR) represents a promising and environmentally friendly approach for both the removal of nitrate (NO3−) pollutants and the production of high-value ammonia (NH3). However, this process faces significant challenges in achieving industrial application due to mismatched reaction kinetics involved in the conversion of NO3− to NO2−, the formation of active hydrogen (H*) via water dissociation, and the stepwise hydrogenation processes. In this study, we developed a trimetallic CuCoRu catalyst with multiple active sites to enhance the selective NH3 synthesis at industrial-scale current density, where Cu primarily catalyzes the reduction of NO3− to NO2−, Co facilitates the deep hydrogenation of NO2− to NH3, and Ru promotes water dissociation to generate H*, effectively bridging the aforementioned processes. The optimized CuCoRu catalyst achieves near-100% NH3 Faradaic efficiency with an NH3 yield rate of 14.6 mmol h−1 cm−2 at a current density of 2.5 A cm−2. The practical application in simulated wastewater with different NO3− concentrations and in the membrane electrode assembly demonstrates great potential for industrial application.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 614-623"},"PeriodicalIF":13.1,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic p-doping and interface passivation of P3HT by oxidized organic small molecules toward efficient and stable perovskite solar modules 氧化有机小分子P3HT的协同p掺杂和界面钝化制备高效稳定的钙钛矿太阳能组件

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-29 DOI: 10.1016/j.jechem.2025.04.047

Pin Lv , Yuxi Zhang , Wen Liang Tan , Junye Pan , Yanqing Zhu , Jiahui Chen , Bingxin Duan , Peiran Hou , Min Hu , Christopher R. McNeill , Jianfeng Lu , Yi-Bing Cheng

{"title":"Synergistic p-doping and interface passivation of P3HT by oxidized organic small molecules toward efficient and stable perovskite solar modules","authors":"Pin Lv , Yuxi Zhang , Wen Liang Tan , Junye Pan , Yanqing Zhu , Jiahui Chen , Bingxin Duan , Peiran Hou , Min Hu , Christopher R. McNeill , Jianfeng Lu , Yi-Bing Cheng","doi":"10.1016/j.jechem.2025.04.047","DOIUrl":"10.1016/j.jechem.2025.04.047","url":null,"abstract":"<div><div>Poly(3-hexylthiophene) (P3HT) is one of the most promising hole-transporting materials in the pursuit of efficient and stable perovskite solar cells due to its outstanding stability and low cost. However, the intrinsic low carrier density of P3HT and poor contact between the P3HT/perovskite interface always lead to a low performance of the solar cell, while conventional chemical doping always makes the films unstable and limits the scalability. In this work, for the first time, we simultaneously enhanced the hole transporting properties of P3HT film and the interface of perovskite by doping it with a judiciously designed oxidized small molecule organic semiconductor. The organic salt not only can promote the lamellar crystallinity of P3HT to obtain better charge transport properties, but also reduce the defects of perovskite. As a result, we achieved champion efficiencies of 23.0% for small-area solar cells and 18.8% for larger-area modules (48.0 cm2). This efficiency is the highest value for P3HT-based perovskite modules. Moreover, the solar cells show excellent operational stability, retaining over 95% of their initial efficiencies after 1200 h of continuous operation.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 477-484"},"PeriodicalIF":13.1,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial engineering and rapid thermal crystallization of Sb2S3 photoanodes for enhanced photoelectrochemical performances Sb2S3光阳极的界面工程与快速热结晶研究

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-27 DOI: 10.1016/j.jechem.2025.04.044

Runfa Tan , Seo Yeong Hong , Yoo Jae Jeong , Seong Sik Shin , In Sun Cho

{"title":"Interfacial engineering and rapid thermal crystallization of Sb2S3 photoanodes for enhanced photoelectrochemical performances","authors":"Runfa Tan , Seo Yeong Hong , Yoo Jae Jeong , Seong Sik Shin , In Sun Cho","doi":"10.1016/j.jechem.2025.04.044","DOIUrl":"10.1016/j.jechem.2025.04.044","url":null,"abstract":"<div><div>Antimony sulfide (Sb2S3) is a promising material for photoelectrochemical (PEC) devices that generate green hydrogen from sunlight and water. In this study, we present a synthesis of high-performance Sb2S3 photoanodes via an interface-engineered hydrothermal growth followed by rapid thermal annealing (RTA). A TiO2 interfacial layer plays a crucial role in ensuring homogeneous precursor deposition, enhancing light absorption, and forming efficient heterojunctions with Sb2S3, thereby significantly improving charge separation and transport. RTA further improves crystallinity and interfacial contact, resulting in dense and uniform Sb2S3 films with enlarged grains and fewer defects. The optimized Sb2S3 photoanode achieves a photocurrent density of 2.51 mA/cm2 at 1.23 V vs. the reversible hydrogen electrode (RHE), one of the highest reported for Sb2S3 without additional catalysts or passivation layers. To overcome the limitations of oxygen evolution reaction (OER), we employ the iodide oxidation reaction (IOR) as an alternative, significantly lowering the overpotential and improving charge transfer kinetics. Consequently, it produces a record photocurrent density of 8.9 mA/cm2 at 0.54 V vs. RHE. This work highlights the synergy between TiO2 interfacial engineering, RTA-induced crystallization, and IOR-driven oxidation, offering a promising pathway for efficient and scalable PEC hydrogen production.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 417-426"},"PeriodicalIF":13.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reasonable control of cut-off voltage to achieve stable lithium metal anode 合理控制截止电压，实现锂金属阳极稳定

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-27 DOI: 10.1016/j.jechem.2025.04.043

Chengcai Liu , Yuanxing Zhang , Yawen Liu , Ling Zhang , Xuefeng Wang , Daobin Mu , Borong Wu

{"title":"Reasonable control of cut-off voltage to achieve stable lithium metal anode","authors":"Chengcai Liu , Yuanxing Zhang , Yawen Liu , Ling Zhang , Xuefeng Wang , Daobin Mu , Borong Wu","doi":"10.1016/j.jechem.2025.04.043","DOIUrl":"10.1016/j.jechem.2025.04.043","url":null,"abstract":"<div><div>Uneven lithium deposition leading to lithium dendrite growth severely hampers the application of lithium-metal batteries. Modifying the collector with lithiophilic materials helps improve lithium deposition. For lithophilic materials to modify the collector, the choice of cut-off voltage is very important. While excessively high cut-off voltages may compromise the stability of the modified layer and consequently disrupt ordered lithium deposition, conventional approaches typically employ lower cut-off voltages (particularly 0.1 V) to maintain modification layer stability. However, the 0.1 V cut-off voltage results in incomplete lithium stripping from the lithiophilic material surface. This phenomenon significantly diminishes the lithiophilic properties of the modified layer and consequently leads to substantial nucleation overpotential. Here, we propose to use a moderate cut-voltage stimulation effect to slow down the interfacial shielding effect of residual lithium metal on lithiophilic materials. By optimizing the cut-off voltage for the Cu@Sb2S3 collector, the stability of the modified layer can be preserved while enabling the complete stripping of lithium metal from the surface of the lithophilic material. The asymmetric cell received the highest Coulombic efficiency (CE) when the lithium stripping cut-off voltage was set at 0.5 V relative to 0.1 and 2.0 V. At a current density of 1 mA cm−2 and a deposition capacity of 1 mA h cm−2, the CE remained 98.6% at a cut-off voltage of 0.5 V after 140 cycles in an ether electrolyte without lithium nitrate.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"106 ","pages":"Pages 961-971"},"PeriodicalIF":13.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suppression of light-induced phase segregation in all-inorganic wide-bandgap perovskite solar cells via molecular interaction design 分子相互作用设计抑制全无机宽禁带钙钛矿太阳能电池光致相偏析

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-27 DOI: 10.1016/j.jechem.2025.04.046

Jing Yang , Yunlong Gan , Mengqi Han , Shiheng Wang , Pengwei Li , Yiqiang Zhang , Gang Li , Yanlin Song

{"title":"Suppression of light-induced phase segregation in all-inorganic wide-bandgap perovskite solar cells via molecular interaction design","authors":"Jing Yang , Yunlong Gan , Mengqi Han , Shiheng Wang , Pengwei Li , Yiqiang Zhang , Gang Li , Yanlin Song","doi":"10.1016/j.jechem.2025.04.046","DOIUrl":"10.1016/j.jechem.2025.04.046","url":null,"abstract":"<div><div>Wide-bandgap mixed-halide perovskites, particularly CsPbIBr2, hold great promise for multi-junction solar cells due to their well-matched bandgap and all-inorganic material system. However, their inherent susceptibility to light-induced phase segregation (LIPS) limits efficiency and stability. In this work, we investigate the effect of three organic additives—4-cyclopentene-1,3-dione (CPD), maleimide (HPD), and 3,4-dibromo-1H-pyrrole-2,5(2H,5H)-dione (BrPD)—on LIPS in wide-bandgap CsPbIBr2 perovskite films. The additives form various chemical interactions, including coordination bonds, hydrogen bonds, and ionic bonds, with I− and undercoordinated Pb2+ ions, among which BrPD has the strongest interaction. This interaction regulates crystallization and improves film morphology. The BrPD-modified films have the largest grain size and the highest light stability, suppressing LIPS, enhancing carrier transfer, and improving device performance. BrPD-modified CsPbIBr2-based solar cells achieve a power conversion efficiency (PCE) of 11.34%, outperforming the control (8.96%) and other additives. Moreover, BrPD-modified devices show excellent stability, retaining 94% of their initial PCE after 60 min of continuous light exposure. This work highlights the potential of strategically selected organic additives to enhance the stability and performance of perovskite solar cells, offering valuable insights for the design of high-efficiency and long-lasting perovskite-based optoelectronic devices.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 550-557"},"PeriodicalIF":13.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gallium-substituted self-pillared pentasil nanosheets combined with metal oxides for CO2 hydrogenation with enhanced selectivity of gasoline 镓取代自柱五戊二烯纳米片与金属氧化物结合用于二氧化碳加氢，提高汽油的选择性

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-27 DOI: 10.1016/j.jechem.2025.04.045

Fengli Yuan , Wenhui Li , Hong Yang , Guangjin Hou , Kuizhi Chen , Junhui Yu , Min Liu , Xinwen Guo

{"title":"Gallium-substituted self-pillared pentasil nanosheets combined with metal oxides for CO2 hydrogenation with enhanced selectivity of gasoline","authors":"Fengli Yuan , Wenhui Li , Hong Yang , Guangjin Hou , Kuizhi Chen , Junhui Yu , Min Liu , Xinwen Guo","doi":"10.1016/j.jechem.2025.04.045","DOIUrl":"10.1016/j.jechem.2025.04.045","url":null,"abstract":"<div><div>Carbon dioxide hydrogenation to gasoline can effectively alleviate the energy crisis and benefit the global environment. Owing to its orthogonally connected nanosheet configuration, large pore volume, and appropriate thickness of single nanosheet, self-pillared pentasil (SPP) nanosheet zeolite is integrated with In2O3-ZrO2 as a tandem catalyst for CO2 hydrogenation to C5+ hydrocarbons. By substituting Al in the SPP framework with Ga, the acid strength of SPP is reduced, and acid density is increased, which favors the generation of C5+ hydrocarbons and enhances the cracking resistance of long-chain hydrocarbons. A maximum C5+ hydrocarbon selectivity of 82% was obtained on In2O3-ZrO2/Ga-SPP (Si/Ga = 100), which shows no deactivation after 200 h reaction time. Furthermore, introducing Pd into the In2O3-ZrO2 not only boosts CO2 conversion to 11% but also suppresses methane selectivity to below 1%. This study offers valuable insights into the design of highly active CO2-to-gasoline catalysts by leveraging the distinctive structure and acidity of zeolites within the tandem catalyst systems.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 517-526"},"PeriodicalIF":13.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Challenges and strategies for the cyclic stability of Ni-rich layered oxide cathode materials 富镍层状氧化物正极材料循环稳定性的挑战与对策

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-26 DOI: 10.1016/j.jechem.2025.04.039

Hongbing Ding , Yang Su , Xinlu Wang , Yue Hu , Xin Li , Hongbo Zhang , Guixia Liu , Wensheng Yu , Xiangting Dong , Jinxian Wang , Xin Wang

{"title":"Challenges and strategies for the cyclic stability of Ni-rich layered oxide cathode materials","authors":"Hongbing Ding , Yang Su , Xinlu Wang , Yue Hu , Xin Li , Hongbo Zhang , Guixia Liu , Wensheng Yu , Xiangting Dong , Jinxian Wang , Xin Wang","doi":"10.1016/j.jechem.2025.04.039","DOIUrl":"10.1016/j.jechem.2025.04.039","url":null,"abstract":"<div><div>Ni-rich cathode materials have become the mainstream choice in the mileage electric vehicle sector due to their high specific capacity and safety factor. However, the volume changes occurring during charging and discharging lead to microcracking and surface remodeling, posing challenges to achieving such as high specific capacity and long cycle stability. This paper reviews existing modification strategies for Ni-rich layered oxide cathode materials. Unlike previous reviews and related papers, we comprehensively discuss a variety of modification strategies and deeply discuss the synergistic modification effect of surface coating and bulk doping, which is how to improve the cycling stability of the Ni-rich cathode. In addition, based on recent research advances, the prospects and challenges of modifying Ni-rich layered cathodes for cycle stability upgrading of the lithium-ion battery, as well as the potential application prospects in the field of power automobiles, are comprehensively analyzed.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 427-457"},"PeriodicalIF":13.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-phase spinel manganese-cobalt hybrid oxide for enhanced oxygen evolution catalysis in acid media 双相尖晶石锰钴杂化氧化物在酸性介质中增强析氧催化

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-26 DOI: 10.1016/j.jechem.2025.04.042

Mengwei Guo , Ze Zhang , Hangrui Zhang , Jiajun Lin , Xianshu Qin , Rongrong Deng , Mingyuan Gao , Qibo Zhang

{"title":"Dual-phase spinel manganese-cobalt hybrid oxide for enhanced oxygen evolution catalysis in acid media","authors":"Mengwei Guo , Ze Zhang , Hangrui Zhang , Jiajun Lin , Xianshu Qin , Rongrong Deng , Mingyuan Gao , Qibo Zhang","doi":"10.1016/j.jechem.2025.04.042","DOIUrl":"10.1016/j.jechem.2025.04.042","url":null,"abstract":"<div><div>Developing efficient and durable non-noble-metal catalysts for the oxygen evolution reaction (OER) in acidic media remains a critical challenge for proton-exchange membrane water electrolysis. Here, we report a dual-phase Mn3O4-Co2MnO4 hybrid oxide electrocatalyst synthesized via a sulfur-assisted co-electrodeposition strategy in a choline chloride/ethylene glycol-based deep eutectic solvent, followed by annealing. The incorporation of sulfur facilitates the formation of a cubic spinel Co2MnO4 phase within the Mn3O4 host, optimizing electronic conductivity and stabilizing the catalytic layer by strengthening Mn–O bonds. When supported on a corrosion-resistant Pt/Ti substrate, the composite electrode achieves a low overpotential of 317 mV at 10 mA cm−2 and sustains stable operation for over 100 h in 0.05 M H2SO4 (pH = 1), outperforming most MnOx-based catalysts and approaching noble-metal benchmarks. Density functional theory calculations reveal that the Co2MnO4 phase lowers the energy barrier for the rate-determining OOH* → O2 step, while in-situ spectroscopic analyses confirm its structural integrity under acidic OER conditions. Furthermore, electrolyte dissociation kinetics significantly influences performance, with HClO4 exhibiting superior mass transfer due to its high proton conductivity. This work provides a rational design pathway for non-noble-metal acidic OER catalysts through phase engineering and electrolyte optimization, advancing sustainable hydrogen production technologies.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 361-372"},"PeriodicalIF":13.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of efficient electrodes for CO2RR through microenvironment regulation of hydrophobic ionomer 疏水离聚体微环境调控构建高效CO2RR电极

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2025-04-26 DOI: 10.1016/j.jechem.2025.04.040

Qingfeng Chang , Gong Zhang , Jinxing Chen , Xiaowei Du , Chujun Wang , Yuan Cai , Yuzhe Du , Peng Zhang , Tuo Wang , Jinlong Gong

{"title":"Construction of efficient electrodes for CO2RR through microenvironment regulation of hydrophobic ionomer","authors":"Qingfeng Chang , Gong Zhang , Jinxing Chen , Xiaowei Du , Chujun Wang , Yuan Cai , Yuzhe Du , Peng Zhang , Tuo Wang , Jinlong Gong","doi":"10.1016/j.jechem.2025.04.040","DOIUrl":"10.1016/j.jechem.2025.04.040","url":null,"abstract":"<div><div>CO2 reduction reaction (CO2RR) electrolyzers based on gas diffusion electrode (GDE) enable the direct mass transfer of CO2 to the catalyst surface for participation in the reaction, thereby establishing an efficient three-phase reaction interface that significantly enhances current density. However, current hydrophobic modification methods face difficulties in achieving precise and substantial control over wettability, and the hydrophobic modifiers tend to significantly impair the conductivity of the electrode and ion transport capabilities. This study employs Nafion ionomers to hydrophobically modify the three-dimensional catalyst layer, revealing the bifunctionality of Nafion. The fluorinated backbone of Nafion ensures the hydrophobicity of the entire catalyst layer, while its sulfonic acid groups promote ion transport, without significantly affecting the conductivity of the electrode. Furthermore, by employing modifiers with distinct wettability characteristics, a highly efficient and large-scale manipulation of the hydrophilic/hydrophobic properties of the catalyst layer was successfully realized. The electrode, constructed with silver nanopowder as a representative catalyst and modified with the hydrophobic ionomer Nafion, exhibits a substantial enhancement in both catalytic activity and durability. The optimized electrode exhibited exceptional electrocatalytic performance in both flow cell and membrane electrode assembly (MEA) configurations. Notably, in the MEA, the electrode achieved a remarkable CO Faradaic efficiency (FE) of 93.3% at a total current density of 200 mA cm−2, while maintaining stable operation for over 62 h.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"108 ","pages":"Pages 373-380"},"PeriodicalIF":13.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0