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Closing the loop for autonomous liquid electrolyte design 闭环自主液体电解质设计
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102029
Eric McCalla
{"title":"Closing the loop for autonomous liquid electrolyte design","authors":"Eric McCalla","doi":"10.1016/j.joule.2025.102029","DOIUrl":"10.1016/j.joule.2025.102029","url":null,"abstract":"<div><div>Optimizing liquid electrolyte formulations for Li-ion batteries is typically a massive time-demanding R&amp;D endeavor. In a recent issue of <em>Cell Reports Physical Science</em>, Berg and Zhang et al. demonstrated the use of a closed-loop automated approach to optimize electrolyte mixtures. Using this approach, the authors showed improved capacities and coulombic efficiencies.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102029"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TEMPO bulk passivation boosts the performance and operational stability of rapid-annealed FAPI perovskite solar cells TEMPO本体钝化提高了快速退火FAPI钙钛矿太阳能电池的性能和运行稳定性
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.101972
Sandy Sánchez-Alonso , Lukas Pfeifer , Ornella Vaccarelli , Christophe Gisler , Jean Hennebert , Felix T. Eickemeyer , Rafael Ferragut , Kevin Sivula , Michael Graetzel
{"title":"TEMPO bulk passivation boosts the performance and operational stability of rapid-annealed FAPI perovskite solar cells","authors":"Sandy Sánchez-Alonso ,&nbsp;Lukas Pfeifer ,&nbsp;Ornella Vaccarelli ,&nbsp;Christophe Gisler ,&nbsp;Jean Hennebert ,&nbsp;Felix T. Eickemeyer ,&nbsp;Rafael Ferragut ,&nbsp;Kevin Sivula ,&nbsp;Michael Graetzel","doi":"10.1016/j.joule.2025.101972","DOIUrl":"10.1016/j.joule.2025.101972","url":null,"abstract":"<div><div>In this work, we present a high-performance, stable formamidinium lead iodide (FAPI) perovskite solar cell (PSC) achieved through the use of 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO) bulk passivation and rapid photonic annealing. Utilizing flash infrared annealing (FIRA), we fabricated TEMPO-FAPI PSCs with a power conversion efficiency (PCE) exceeding 20%, exceeding the prior state of the art for this process. The TEMPO additive promotes enhanced crystallization dynamics, yielding films with improved homogeneity and reduced defect densities, as confirmed by photoluminescence (PL), profilometry, and positron annihilation lifetime spectroscopy (PALS). Stability testing under ISOS protocols demonstrated that the TEMPO-FAPI devices retained over 90% of their initial PCE after 4,296 h of operational and thermal stress, showing unprecedented longevity for a rapid processing technique. TEMPO’s primary effect on passivating grain boundaries and surface defects is evidenced by a significantly reduced non-radiative recombination rate and low defect density, establishing this molecule as a promising additive for scalable, durable FAPI PSC manufacturing.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 101972"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aqueous zinc-iodine batteries with ultra-high loading and advanced performance 超高负载、性能先进的水基锌碘电池
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102000
Han Wu , Shao-Jian Zhang , Jitraporn Vongsvivut , Mietek Jaroniec , Junnan Hao , Shi-Zhang Qiao
{"title":"Aqueous zinc-iodine batteries with ultra-high loading and advanced performance","authors":"Han Wu ,&nbsp;Shao-Jian Zhang ,&nbsp;Jitraporn Vongsvivut ,&nbsp;Mietek Jaroniec ,&nbsp;Junnan Hao ,&nbsp;Shi-Zhang Qiao","doi":"10.1016/j.joule.2025.102000","DOIUrl":"10.1016/j.joule.2025.102000","url":null,"abstract":"<div><div>Aqueous zinc-iodine (Zn-I<sub>2</sub>) batteries, leveraging abundant resources and inherent safety, face commercialization challenges due to low cathode loading and iodine sublimation in traditional fabrication methods. We introduce a dry electrode preparation technique that significantly enhances the areal capacity to 15.8 mA h cm<sup>−2</sup> (ZnI<sub>2</sub> loading &gt;100 mg cm<sup>−2</sup>), far exceeding previous Zn-I<sub>2</sub> and commercial Li-ion batteries (∼3–5 mA h cm<sup>−2</sup>). This method not only increases cathode loading but also reduces polyiodides' shuttle effects and self-discharge rates, achieving a low discharge rate of 11.16% over 168 h. To address zinc-related issues at high loadings, 1,3,5-trioxane is added to the electrolyte to form a flexible polymer solid electrolyte interphase, preventing zinc dendrite formation. Our approach enables an A h-level pouch cell with remarkable cycling stability, maintaining 88.6% capacity after 750 cycles at 1 C at a high areal capacity of 15.8 mA h cm<sup>−2</sup>, demonstrating potential applicability to other aqueous and halogen-based battery systems.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102000"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144268954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thickness-insensitive polymeric hole-transporting layer for efficient inverted perovskite solar cells 高效倒置钙钛矿太阳能电池的厚度不敏感聚合物空穴传输层
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102011
Zhengbo Cui , Wen Li , Bo Feng , Yunfei Li , Nannan Sun , Wenxiao Zhang , Sheng Fu , Xiaodong Li , Junfeng Fang
{"title":"Thickness-insensitive polymeric hole-transporting layer for efficient inverted perovskite solar cells","authors":"Zhengbo Cui ,&nbsp;Wen Li ,&nbsp;Bo Feng ,&nbsp;Yunfei Li ,&nbsp;Nannan Sun ,&nbsp;Wenxiao Zhang ,&nbsp;Sheng Fu ,&nbsp;Xiaodong Li ,&nbsp;Junfeng Fang","doi":"10.1016/j.joule.2025.102011","DOIUrl":"10.1016/j.joule.2025.102011","url":null,"abstract":"<div><div>Recently, inverted perovskite solar cells (PSCs) have been developed rapidly with the assistance of hole-transporting layers (HTLs), especially self-assembled monolayers (SAMs). However, present device performance strongly depends on HTL thickness, which should be strictly controlled to ∼5 nm, and &gt;10 nm SAM HTL will induce severe efficiency loss. Here, we report a thickness-insensitive polymeric HTL (P3CT-TBB) through poly[3-(4-carboxylbutyl) thiophene] (P3CT) p-doping with 1,3,5-tris(bromomethyl)benzene (TBB). TBB can withdraw electrons from the thiophene chain in P3CT to promote its p-doping. The doped P3CT-TBB exhibits a ∼10-fold increase in film conductivity in comparison with control P3CT. As a result, P3CT-TBB-based inverted PSCs show the highest efficiency of &gt;26% without thickness sensitiveness, and &gt;24% efficiency remains in PSCs with over 60 nm P3CT-TBB. Besides, due to the improved hole extraction, device stability is also improved, retaining ∼90% of initial efficiency after maximum power point (MPP) tracking for 1,200 h under the ISOS-L-2 protocol (65°C).</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102011"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144520919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
(How to) avoid the inflationary labeling of emissions as “hard to abate” (如何)避免给排放贴上“难以减少”的通胀标签
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102039
Vincent Dufour-Décieux , Katrin Sievert , Bjarne Steffen , André Bardow , Tobias S. Schmidt
{"title":"(How to) avoid the inflationary labeling of emissions as “hard to abate”","authors":"Vincent Dufour-Décieux ,&nbsp;Katrin Sievert ,&nbsp;Bjarne Steffen ,&nbsp;André Bardow ,&nbsp;Tobias S. Schmidt","doi":"10.1016/j.joule.2025.102039","DOIUrl":"10.1016/j.joule.2025.102039","url":null,"abstract":"<div><div>Vincent Dufour-Décieux is a research scientist in the Energy Process and Systems Engineering Group at ETH Zurich, Switzerland. His research on separation processes, such as direct air capture, covers material property estimation, separation performance, and environmental impact assessment. He holds a master’s degree in materials chemistry from École Polytechnique, France, and a master’s degree and PhD in materials science and engineering from Stanford University, USA.</div><div>Katrin Sievert is a PhD candidate at ETH Zurich in the Climate Finance and Policy Group and the Institute of Science, Technology, and Policy. Her research focuses on the techno-economics of carbon dioxide removal, carbon capture, transport, and storage, and aviation decarbonization. She holds a master’s degree in management and technology from the Technical University of Munich.</div><div>Bjarne Steffen is senior scientist and head of ETH Zurich’s Climate Finance and Policy Group. His research addresses the impact of public policy interventions on technological change in the energy sector, with a particular focus on the role of financial actors in reallocating capital. He holds a master’s degree in economics from the University of Mannheim and a PhD in energy economics from the University of Duisburg-Essen.</div><div>André Bardow is professor of energy and process systems engineering at ETH Zurich. Previously, he was a professor of technical thermodynamics at RWTH Aachen University and director of the Institute for Energy and Climate Research (IEK-10) at Forschungszentrum Jülich. His research focuses on sustainable energy systems and chemical production processes. He earned his PhD degree at RWTH Aachen University.</div><div>Tobias S. Schmidt is ETH Zurich’s professor of energy and technology policy and directs the Institute of Science, Technology, and Policy. His research focuses on the interaction of public policy and its underlying politics with technological change in energy-related sectors. He holds a master’s degree in electrical engineering from TU Munich and a doctorate from ETH Zurich.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102039"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extreme-fast-charging of energy-dense lithium metal batteries enabled by controlled grafting of ionic polymers 通过控制离子聚合物的接枝,实现能量密集锂金属电池的极快充电
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102004
Peng Wen , Huaijiao Wang , Shantao Han , Weiping Li , Louis Alexander Ah , Zexi Zhang , Yifei Xu , Xinrong Lin , Yang Shao-Horn , Mao Chen
{"title":"Extreme-fast-charging of energy-dense lithium metal batteries enabled by controlled grafting of ionic polymers","authors":"Peng Wen ,&nbsp;Huaijiao Wang ,&nbsp;Shantao Han ,&nbsp;Weiping Li ,&nbsp;Louis Alexander Ah ,&nbsp;Zexi Zhang ,&nbsp;Yifei Xu ,&nbsp;Xinrong Lin ,&nbsp;Yang Shao-Horn ,&nbsp;Mao Chen","doi":"10.1016/j.joule.2025.102004","DOIUrl":"10.1016/j.joule.2025.102004","url":null,"abstract":"<div><div>Lithium (Li)-metal batteries (LMBs) integrating ultrahigh energy outputs with extreme-fast-charging (XFC) are critical for forthcoming applications. However, the hostless nature of the metallic Li anode exacerbates interfacial polarization and dendrite formation, which underpins the undesirable trade-off between energy density and charging rate in batteries. Here, we design a molecularly defined interphase that is chemically tethered to the current collector. Such nanometer-thin and single-ion-conducting solid polymer interphase (SPI), different from the repetitively changing solid electrolyte interphase (SEI), offers constant control to accelerate charge transfer and foster uniform Li nucleation and dense plating, thus delivering ultrahigh energy density &gt;300 Wh kg<sup>−1</sup> at 10 C with a thick cathode and lean electrolytes. The innovative interphase engineering strategy is projected to pave the way for versatile fast-charging technologies via manipulating interfacial kinetics of ions.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102004"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing water and oxygen transport through electrode engineering for AEM water electrolyzers 通过电极工程提高AEM水电解槽的水氧输送
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102001
Rito Yanagi , Patrick Yang , Andrew W. Tricker , Yu Chen , Mary C. Scott , Sarah A. Berlinger , Iryna V. Zenyuk , Xiong Peng
{"title":"Enhancing water and oxygen transport through electrode engineering for AEM water electrolyzers","authors":"Rito Yanagi ,&nbsp;Patrick Yang ,&nbsp;Andrew W. Tricker ,&nbsp;Yu Chen ,&nbsp;Mary C. Scott ,&nbsp;Sarah A. Berlinger ,&nbsp;Iryna V. Zenyuk ,&nbsp;Xiong Peng","doi":"10.1016/j.joule.2025.102001","DOIUrl":"10.1016/j.joule.2025.102001","url":null,"abstract":"<div><div>Anion-exchange membrane water electrolyzers (AEMWEs) can accelerate the deployment of more efficient and affordable hydrogen production solutions. Here, electrode structure is shown to affect water back-diffusion and oxygen transport, which, in return, governs overpotential behaviors in AEMWEs. Measurements indicate that electrode with copious catalytic sites produces water close to the AEM, creating a higher water gradient and driving water back-diffusion, which improves membrane hydration and mass transport. <em>In situ</em> measurement reveals a high pH gradient near the anode surface, which affects anode kinetics. <em>Operando</em> measurement shows reduced oxygen accumulation when decoupling oxygen production and transport on anode. Catalyst ink rheology and stability are tuned with additives to realize scalable fabrication of electrodes with enhanced transport features, allowing AEMWE to operate at 2 A cm<sup>−2</sup> for over 1,000+ h at a 2.3 μV h<sup>−1</sup> degradation rate. Analysis during and post-durability provides insights into degradation mechanisms. This work demonstrates an electrode design strategy for efficient and durable AEMWEs.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102001"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144296223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inherent lunar water enabled photothermal CO2 catalysis 月球固有的水使CO2光热催化
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.102006
Junchuan Sun , Wanguo Gao , Xue Ding , Zhe Lu , Huaiguang Li , Mingjian Zhang , Wenguang Tu , Zhongxin Chen , Yong Zhou , Wei Yao , Wenlei Wu , Yingfang Yao , Lu Wang , Mengfei Yang , Weihua Wang , Zhigang Zou
{"title":"Inherent lunar water enabled photothermal CO2 catalysis","authors":"Junchuan Sun ,&nbsp;Wanguo Gao ,&nbsp;Xue Ding ,&nbsp;Zhe Lu ,&nbsp;Huaiguang Li ,&nbsp;Mingjian Zhang ,&nbsp;Wenguang Tu ,&nbsp;Zhongxin Chen ,&nbsp;Yong Zhou ,&nbsp;Wei Yao ,&nbsp;Wenlei Wu ,&nbsp;Yingfang Yao ,&nbsp;Lu Wang ,&nbsp;Mengfei Yang ,&nbsp;Weihua Wang ,&nbsp;Zhigang Zou","doi":"10.1016/j.joule.2025.102006","DOIUrl":"10.1016/j.joule.2025.102006","url":null,"abstract":"<div><div>The extraction and utilization of water in space are of high technological importance and scientific interest for deep space exploration. The presence of massive H-related species in lunar soil has been confirmed, and these species can potentially be converted into water with appropriate treatments. In this work, an <em>in situ</em> photothermal lunar water extraction and utilization technology was proposed. The extracted lunar water enabled the conversion of CO<sub>2</sub> into O<sub>2</sub>, H<sub>2</sub>, and CO with photothermal catalytic technology. Such a finding has great potential to be integrated into the extraterrestrial photosynthesis pathway to convert CO<sub>2</sub> and water vapor into essential chemicals and oxygen.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 102006"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pathways to national-scale adoption of enhanced geothermal power through experience-driven cost reductions 通过经验驱动的成本降低,在全国范围内采用增强型地热发电的途径
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.101971
Wilson Ricks , Jesse D. Jenkins
{"title":"Pathways to national-scale adoption of enhanced geothermal power through experience-driven cost reductions","authors":"Wilson Ricks ,&nbsp;Jesse D. Jenkins","doi":"10.1016/j.joule.2025.101971","DOIUrl":"10.1016/j.joule.2025.101971","url":null,"abstract":"<div><div>Enhanced geothermal systems (EGS) are one of a small number of emerging energy technologies with the potential to deliver firm carbon-free electricity at a large scale but are often excluded from macro-scale decarbonization studies due to uncertainties regarding their cost and resource potential. Here, we combine empirically grounded near-term EGS cost estimates with an experience curves framework, by which costs fall as a function of cumulative deployment, to model EGS deployment pathways and impacts on the United States (US) electricity sector from the present through 2050. We find that by initially exploiting limited high-quality geothermal resources in the western US, EGS can achieve early commercialization and experience-based cost reductions that enable it to supply up to a fifth of total US electricity generation by 2050 and substantially reduce the cost of decarbonization nationwide. Higher-than-expected initial EGS costs could inhibit early growth and constrain the technology’s long-run potential, though supportive policies counteract these effects.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 101971"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enriched asymmetric π electrons confining single-site Pt for acidic hydrogen evolution 富集的非对称π电子限制了单点Pt在酸性氢演化中的作用
IF 38.6 1区 材料科学
Joule Pub Date : 2025-07-16 DOI: 10.1016/j.joule.2025.101968
Mingxia Xu , Yiran Kang , Leilei Wang , Yunlong Zhang , Guang Jiang , Yafeng Cai , Yunchuan Tu , Qiao Zhao , Jun Chi , Wei Song , Hongmei Yu , Jingting Hu , Wei Liu , Rui Huang , Liang Yu , Junling Lu , Xinhe Bao , Dehui Deng
{"title":"Enriched asymmetric π electrons confining single-site Pt for acidic hydrogen evolution","authors":"Mingxia Xu ,&nbsp;Yiran Kang ,&nbsp;Leilei Wang ,&nbsp;Yunlong Zhang ,&nbsp;Guang Jiang ,&nbsp;Yafeng Cai ,&nbsp;Yunchuan Tu ,&nbsp;Qiao Zhao ,&nbsp;Jun Chi ,&nbsp;Wei Song ,&nbsp;Hongmei Yu ,&nbsp;Jingting Hu ,&nbsp;Wei Liu ,&nbsp;Rui Huang ,&nbsp;Liang Yu ,&nbsp;Junling Lu ,&nbsp;Xinhe Bao ,&nbsp;Dehui Deng","doi":"10.1016/j.joule.2025.101968","DOIUrl":"10.1016/j.joule.2025.101968","url":null,"abstract":"<div><div>Achieving both high activity and durability with minimal Pt loading is critical for acidic hydrogen evolution in large-scale proton exchange membrane water electrolyzers (PEMWEs), in which precise regulation of Pt-support interaction is the key yet remains a great challenge. Here, we report that by confining single-site Pt with enriched asymmetric π electrons on a monolayer graphene encapsulating CoNi nanoalloy, a highly active and durable Pt site is constructed, which delivers an unprecedented mass activity. Assembled PEMWE using this catalyst achieves a record-high current density of 4.0 A cm<sup>−2</sup> at 2.02 V with the lowest-ever-reported Pt loading of 1.2 μg<sub>Pt</sub> cm<sup>−2</sup> and exhibits an excellent durability of 1,000 h at 2 A cm<sup>−2</sup>. Comprehensive investigations reveal that CoNi-graphene 3<em>d</em>-2<em>p</em> orbital overlapping combined with CoNi-to-carbon electron transfer, perturbs the conjugation effect and orbital symmetry of graphene π electrons, leading to reinforced Pt–graphene bonding and electron enrichment on Pt, which enhances both catalytic stability and activity.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 7","pages":"Article 101968"},"PeriodicalIF":38.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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