Yuhui Jiang, Pengfei Guo, Ruihao Chen, Liming Du, Xingchao Shao, Xiuhai Zhang, Yu Zheng, Ning Jia, Zhiyu Fang, Luyao Ma, Xu Zhang, Zhen Li, Chunlei Yang, Yi Hou, Fen Lin, Weimin Li, Zhe Liu, Hongqiang Wang
{"title":"Heteroepitaxy with PbSe Nanocrystals Enables Highly Stable Wide-Bandgap Perovskite Solar Cells","authors":"Yuhui Jiang, Pengfei Guo, Ruihao Chen, Liming Du, Xingchao Shao, Xiuhai Zhang, Yu Zheng, Ning Jia, Zhiyu Fang, Luyao Ma, Xu Zhang, Zhen Li, Chunlei Yang, Yi Hou, Fen Lin, Weimin Li, Zhe Liu, Hongqiang Wang","doi":"10.1002/aenm.202501312","DOIUrl":"https://doi.org/10.1002/aenm.202501312","url":null,"abstract":"The perovskite-based tandem solar cell is one of the promising technological pathways to achieve high efficiency. However, the mixed-halide perovskite top cell is prone to phase segregation under continuous illumination, which leads to rapid degradation of the tandem device's overall power output. To tackle this challenge, ligand-free lead selenide (PbSe) nanocrystals are introduced into the precursor solution to promote the heteroepitaxial growth of mixed-halide perovskite. The incorporation of PbSe results in a high-quality perovskite film with excellent uniformity and low defect density, effectively suppressing halide phase segregation. This improved perovskite thin film enables the fabrication of wide-bandgap (1.68 eV) perovskite Cs<sub>0.05</sub>(FA<sub>0.77</sub>MA<sub>0.23</sub>)<sub>0.95</sub>Pb(I<sub>0.77</sub>Br<sub>0.23</sub>)<sub>3</sub> <i>p</i>-i-<i>n</i> devices, achieving a power conversion efficiency (PCE) of 22.87% and a fill factor (FF) of 84.79%. After 1000 h of maximum power point (MPP) tracking under 1-sun continuous illumination, the perovskite solar cells retain 88% of their initial efficiency. Additionally, by mechanically stacking the semi-transparent perovskite on copper indium gallium selenide (CIGS) solar cells, the 4-terminal tandem cell has demonstrated a PCE of 28.24%.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"23 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884974","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}
{"title":"Chelation Effect Induced Robust Biomass Protective Layer for Aqueous Zn Metal Anode","authors":"Hao Wu, Hong-Ting Yin, Jin-Lin Yang, Ruiping Liu","doi":"10.1002/aenm.202501359","DOIUrl":"https://doi.org/10.1002/aenm.202501359","url":null,"abstract":"The detrimental dendrite growth and hydrogen evolution corrosion on Zn metal anode greatly hinder the implement of aqueous zinc batteries. Constructing a stable solid electrolyte interphase (SEI) on Zn anode is considered an effective strategy to prolong the cells life. Herein, by using poly(N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide) (PDMA) as a case study, the impact of Zn<sup>2+</sup> chelation effect on SEI layer generation is systematically investigated. The DMA monomer tends to form a robust PDMA layer on Zn anode with a higher crosslinking degree with the assistant of Zn<sup>2+</sup>. The Zn─O interaction between Zn metal and PDMA guarantees the long-term protection efficiency of the SEI layer and uniformizes the Zn nucleation. Moreover, the Zn<sup>2+</sup> desolvation can be propelled by the zincophilic hydroxyl groups in PDMA. As expected, the Zn symmetric cell with in-PDMA showcases an extended lifespan of over 3800 h. The Zn||NVO full cell maintains a capacity of 150 mAh g<sup>−1</sup> after 1000 cycles at 1 A g<sup>−1</sup>. This work is believed to guide the future aqueous Zn anode design based on the protective layer engineering.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"37 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880208","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}
{"title":"1D ZrCl4 Matrices for Enhanced Ion Transport in Glassy Chloride Electrolytes","authors":"Yongli Song, Shida Xue, Zijin Xu, Jianjun Fang, Zhaohuang Zhan, Yao-Hui Wang, Chuanxi Chen, Shunning Li, Tongchao Liu, Yong Yang, Luyi Yang, Feng Pan","doi":"10.1002/aenm.202500913","DOIUrl":"https://doi.org/10.1002/aenm.202500913","url":null,"abstract":"Designing a solid-state electrolyte (SSE) that combines the lithium-ion transport behavior found in liquid or solid polymer electrolytes with the high lithium-ion transference number characteristic of inorganic SSEs is an immensely appealing challenge. Herein, a cost-effective, chain-structured ZrCl<sub>4</sub> is introduced as a hosting matrix, resembling polyethylene oxide (PEO), to facilitate the dissociation of lithium salts (e.g., LiCl, Li<sub>2</sub>SO<sub>4</sub>, and Li<sub>3</sub>PO<sub>4</sub>). The dissociated free Li-ions can be coordinated by the [ZrCl<sub>6</sub>] octahedra, forming fast ion-conducting pathways along ZrCl<sub>4</sub> chains that achieve an ionic conductivity as high as 1.2 mS cm<sup>−1</sup>. Simultaneously, ZrCl<sub>4</sub> serves as a Lewis acid, trapping anions and delivering a high lithium transference number approaching unit. The proposed electrolyte exhibits stable cycling performance when integrated into LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub>||Li-In cells. Moreover, this design strategy also extends to the synthesis of sodium-ion conductors, achieving a high ionic conductivity of 0.3 mS cm<sup>−1</sup>. Demonstrating a previously unreported lithium-ion conduction mechanism, the proposed ZrCl<sub>4</sub>-based electrolytes offer a versatile approach for tailoring advanced SSEs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"140 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884980","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}
{"title":"Record-Efficient Flexible Monolithic Perovskite–CIGS Tandem Solar Cell with VOC Exceeding 1.8 V on Polymer Substrate","authors":"Liting Tang, Hui Yan, Li Zeng, Zhuo Xue, Zekai Luo, Jun Luo, Wuji Wang, Sheng Wang, Junbo Gong, Jianmin Li, Xudong Xiao","doi":"10.1002/aenm.202403682","DOIUrl":"https://doi.org/10.1002/aenm.202403682","url":null,"abstract":"Here, the surface modification of RF sputtering NiOx films by 4PADCB (NiOx-P) is proposed for the first time. The modification effectively suppresses voltage loss at the hole transport layer (HTL)/perovskite interface and optimizes the energy band alignment between the perovskite layer and RF NiOx, thereby enhancing charge extraction and reducing nonradiative recombination of tandem devices, resulting in a flexible monolithic Perovskite (PVK)-CIGS tandem solar cell with the highest efficiency of 22.8% and an extremely high Open-circuit voltage (V<sub>OC</sub>) of 1.82 V. This method is expected to obtain better flexible monolithic PVK-CIGS tandem solar cells.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"81 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884975","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}
Jingwen Jiang, Tobias Kutsch, Wilhelm Klein, Manuel Botta, Anatoliy Senyshyn, Robert J. Spranger, Volodymyr Baran, Leo van Wüllen, Hubert A. Gasteiger, Thomas F. Fässler
{"title":"Scandium Induced Structural Disorder and Vacancy Engineering in Li3Sb – Superior Ionic Conductivity in Li3−3xScxSb","authors":"Jingwen Jiang, Tobias Kutsch, Wilhelm Klein, Manuel Botta, Anatoliy Senyshyn, Robert J. Spranger, Volodymyr Baran, Leo van Wüllen, Hubert A. Gasteiger, Thomas F. Fässler","doi":"10.1002/aenm.202500683","DOIUrl":"https://doi.org/10.1002/aenm.202500683","url":null,"abstract":"Solid-state electrolytes are indispensable for all-solid-state batteries. Sulfide-based solid electrolytes, such as Li<sub>10</sub><i>M</i>P<sub>2</sub>S<sub>12</sub> (<i>M </i>= Ge, Sn) and Li<sub>6</sub>PS<sub>5</sub><i>X</i> (<i>X</i> = Cl, Br, I), exhibit excellent ionic conductivities, with the fastest Li<sup>+</sup> ion conductor, Li<sub>9.54</sub>[Si<sub>0.6</sub>Ge<sub>0.4</sub>]<sub>1.74</sub>P<sub>1.44</sub>S<sub>11.1</sub>Br<sub>0.3</sub>O<sub>0.6</sub>, achieving 32 mS cm<sup>−1</sup> at room temperature. Phosphide-based solid electrolytes have recently shown great potential with diverse structures and variable ionic conductivities. This compound class is expanded to the heavier homolog Li<sub>3</sub>Sb, showing its transformation to a superionic conductor through aliovalent substitution of lithium with scandium. Resulting Li<sub>2.55</sub>Sc<sub>0.15</sub>Sb shows an unexpected high ionic conductivity of 42(6) mS cm<sup>−1</sup> at 298 K under electron-blocking conditions in line with a very low activation energy of 17.6(8) kJ mol<sup>−1</sup>, representing the highest and lowest reported values, respectively, for a solid Li-ion conductor so far. Additionally, the compound exhibits a significant, but two orders of magnitude lower electronic conductivity making it a promising candidate for mixed ionic-electronic conductor (MIEC). The series of new compounds Li<sub>3−3</sub><i><sub>x</sub></i>Sc<i><sub>x</sub></i>Sb, maintains the β-Li<sub>3</sub>Sb structure up to a nominal composition of <i>x</i>(Sc) = 0.15, with Sc<sup>3+</sup> ions occupying the tetrahedral voids of the face-centered cubic Sb anion arrangement and creating vacancies that facilitate efficient Li<sup>+</sup> ion diffusion pathways. This work proposes a general design strategy for vacancy engineering in which replacement of Li with Sc in simple binary compounds has a direct impact on the ion mobility.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"24 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880216","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}
Luqi Zhang, Hongpeng Gao, Yuwei Zhu, Ich Tran, Wei Tang, Jiao Lin, Anthony U. Mu, Junlin Wu, Wei Li, Dennis Nordlund, Linqin Mu, Zheng Chen
{"title":"Unveiling the Role of Critical Impurities in Spent LiFePO4 Cathodes for Scalable Direct Regeneration","authors":"Luqi Zhang, Hongpeng Gao, Yuwei Zhu, Ich Tran, Wei Tang, Jiao Lin, Anthony U. Mu, Junlin Wu, Wei Li, Dennis Nordlund, Linqin Mu, Zheng Chen","doi":"10.1002/aenm.202406084","DOIUrl":"https://doi.org/10.1002/aenm.202406084","url":null,"abstract":"Direct regeneration offers a promising alternative to recycling End-of-Life (EoL) batteries by restoring metal elements and preserving the material structure, yet scaling these technologies to handle practical cathode black mass (CBM) with impurities remains challenging. This study investigates the evolution of impurities, including aluminum (Al), polyvinylidene difluoride (PVDF) binder, and residual carbon (C), during direct recycling of spent LiFePO<sub>4</sub> (LFP) cathodes and their impact on electrochemical performance. Using various ex situ and in situ analyses, it is shown that the formation of lithium fluoride (LiF) during the traditional direct recycling process hinders lithium diffusion and deteriorates the reversible capacity. To address this major challenge, the combination of pH-controlled hydrothermal purification and the two-step sintering process is proposed effectively to regenerate spent LFP cathodes, eliminating the negative effect of Al and fluorine (F) impurities while mitigating any potential impacts of carbon residuals. The regenerated LFP from spent CBM achieves superior performance, retaining 152.5 mAh g<sup>−1</sup> at 0.1 C and 133 mAh g<sup>−1</sup> at 1 C with 98.7% capacity retention after 200 cycles. This approach is further validated using three distinct waste feedstocks from battery modules, enhancing impurity management and scalability in direct recycling. These findings present a sustainable and economically viable solution for large-scale LFP regeneration.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"17 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880211","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}
{"title":"Novel Fe‐Modulating Raney‐Ni Electrodes toward High‐Efficient and Durable AEM Water Electrolyzer","authors":"Tao Jiang, Xinge Jiang, Chongyang Jiang, Jian Wang, Yoann Danlos, Taikai Liu, Chunming Deng, Chaoyue Chen, Hanlin Liao, Vasileios Kyriakou","doi":"10.1002/aenm.202501634","DOIUrl":"https://doi.org/10.1002/aenm.202501634","url":null,"abstract":"Anion exchange membrane (AEM) water electrolysis holds promise for green hydrogen production. One of the main challenges is the preparation of highly efficient electrodes with scalable techniques. Herein, a novel Fe‐modulating Raney‐Ni electrode (NFA‐CA) is developed through atmospheric plasma spraying and chemical etching techniques. The resulting electrode demonstrates high bifunctional catalytic activities with low overpotentials and Tafel slopes (HER: 27 mV at 10 mA cm<jats:sup>−2</jats:sup>, 20 mV dec<jats:sup>−1</jats:sup>; OER: 169 mV at 10 mA cm<jats:sup>−2</jats:sup>, 49 mV dec<jats:sup>−1</jats:sup>), competing for precious‐metal catalysts and leading transition‐metal‐based compounds reported in the literature. Moreover, the corresponding AEM electrolyzer only requires 1.56 V to drive 1 A cm<jats:sup>−2</jats:sup> and exceptional durability for 1000 h. Moreover, the AEM cell can reach 2 A cm<jats:sup>−2</jats:sup> at 1.79 V, exceeding the United States Department of Energy target for AWE systems (2 A cm<jats:sup>−2</jats:sup> at 1.80 V). The highly efficient and durable performance is attributed to the NiFe nanocrystals (core)‐NiFe hydroxide (shell) nanostructures created by the treatment. This structure not only facilitates superior electrocatalytic properties but it is also maintained after 1000 h of continuous operation. It is consider that the present approach can offer an attractive route for scalable fabrication of NiFe‐based electrodes for industrial AEM water electrolyzers.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"72 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876153","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}
{"title":"Ultrafast Microwave Quasi‐Solid‐State Construction of Os‐OsP₂ with Enhanced Interfacial Spillover for Seawater‐Based Anion Exchange Membrane Electrolyzers","authors":"Xiaowei Fu, Xingchao Zang, Jinxiao Gao, Hongdong Li, Weiping Xiao, Yingxia Zong, Guangying Fu, Jinsong Wang, Tianyi Ma, Wei Jin, Zexing Wu, Lei Wang","doi":"10.1002/aenm.202501054","DOIUrl":"https://doi.org/10.1002/aenm.202501054","url":null,"abstract":"Developing cost‐effective hydrogen evolution reactions (HER) catalysts to replace Pt/C in alkaline seawater media remains a critical challenge. Therefore, the osmium‐osmium phosphide (Os‐OsP<jats:sub>2</jats:sub>) catalyst is reported with a heterogeneous junction through ultrafast (20 s) microwave quasi‐solid approach for seawater‐splitting under industrial‐grade current density. Experimental and theoretical analysis reveal that the Os‐OsP₂ interface optimizes electronic structure: osmium (Os) sites accelerate water dissociation by lowering the d‐band center, while OsP₂ promotes hydrogen desorption via interfacial spillover, collectively reducing the HER energy barrier. In addition, the catalyst requires only 1.74 V to reach 1 A cm<jats:sup>−2</jats:sup> and owns high price activity in the anion exchange membrane water electrolyzer, surpassing commercial Pt/C by 23% in efficiency under identical conditions. Furthermore, it exhibits robust HER activity across a wide pH range and exceptional durability over 100 h in alkaline seawater. Economic evaluation highlights its superior cost activity (85.6 A dollar⁻¹), 90‐fold higher than Pt/C, with hydrogen production costs ($0.86 GGE⁻¹) undercutting the U.S. DOE target. This study provides feasible guidance for the development of high‐performance, cost‐effective catalysts for scalable hydrogen production from seawater.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"78 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876154","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}
{"title":"Bridged Mn─O─Ru Motifs in RuO2 Catalyst Promoting Hydrogen Production at Ampere‐Level Current Density","authors":"Qiqi Li, Qiulin Xu, Zhenxin Pei, Zhixuan Zhang, Wenli Xu, Jiayao Mao, Qing Shang, Yongqiang Ni, Yifan Chen, Yongting Chen, Xinghui Liu, Xuanke Li, Qin Zhang, Nianjun Yang","doi":"10.1002/aenm.202500815","DOIUrl":"https://doi.org/10.1002/aenm.202500815","url":null,"abstract":"Accurately regulating the reactive sites of catalysts is vital for highly efficient catalytic processes but still faces considerable challenges. In view of this, a local oxidation‐state asymmetric Mn‐O‐Ru bridged moiety is developed by introducing Mn atoms into the RuO<jats:sub>2</jats:sub> host. The synergistic effect of the respective active sites on the Mn‐O‐Ru microstructure ensures its excellent alkaline HER performance. Theoretical calculations profiled that induced by the Mn‐O‐Ru bridged moiety, the water dissociation ability of Ru sites is significantly boosted, while the bridging oxygen exhibits the optimal hydrogen adsorption free energy. As predicted, the Mn‐RuO<jats:sub>2</jats:sub> catalyst achieved the overpotentials as low as 118 and 160 mV at the industrial level current densities of 1 and 2 A cm<jats:sup>‒2</jats:sup> in 1 <jats:sc>m</jats:sc> KOH, respectively, superior to the RuO<jats:sub>2</jats:sub> and commercial Pt/C catalyst. Such a Mn‐RuO<jats:sub>2</jats:sub> electrocatalyst can operate stably with a long lifetime of 300 h at 10 mA cm<jats:sup>‒2</jats:sup> under alkaline conditions. Furthermore, it only requires 1.87 V to reach the current density of 1.0 A cm<jats:sup>‒2</jats:sup> when serving as the cathode in an assembled flow cell. This work provides new insight into catalytic local environment design for obtaining ideal efficient HER electrocatalysts.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"3 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876152","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}
Zexin Wei, Min Song, Huanxin Wang, Yonghui Zhang, Guang Zeng, Min Kong, Feilong Gong, Jian Liu, Shizhong Wei
{"title":"Rare Earth Single Atoms Steering Hydrogen Spillover Over Pd/WO3 Toward High‐Efficiency H2 Sensor at Near Room Temperature","authors":"Zexin Wei, Min Song, Huanxin Wang, Yonghui Zhang, Guang Zeng, Min Kong, Feilong Gong, Jian Liu, Shizhong Wei","doi":"10.1002/aenm.202501365","DOIUrl":"https://doi.org/10.1002/aenm.202501365","url":null,"abstract":"Metal oxide semiconductor (MOS) supported Pd materials are potential candidates for H<jats:sub>2</jats:sub> sensors, while effective H<jats:sub>2</jats:sub> detection at near room temperature remains a great challenge owing to the difficulty of hydrogen migration from Pd at low temperature. Herein, guided by theoretical calculations, rare earth single atoms doping Pd nanoparticles supported on WO<jats:sub>3</jats:sub> nanorods with tunable work function differences (ΔФ) and oxygen vacancies are precisely developed to improve H<jats:sub>2</jats:sub> sensing performances. The resultant Ce‐Pd/WO<jats:sub>3</jats:sub> presents the highest response of 31.3 toward 50 ppm H<jats:sub>2</jats:sub>, showing 6 times improvement over the Pd/WO<jats:sub>3</jats:sub>, which realizes the trace and fast detection of H<jats:sub>2</jats:sub>. Density functional theory results reveal that the energy barrier of hydrogen migration and the formation energy of oxygen vacancy decrease after introducing rare earth single atoms, and Ce‐Pd/WO<jats:sub>3</jats:sub> with the lowest ΔФ exhibits the most facile hydrogen spillover and desorption. The in situ spectra characterization and hydrogen spillover experiments further demonstrate the highly improved hydrogen migration over the Ce‐Pd/WO<jats:sub>3</jats:sub>. Significantly, the real‐time monitoring application of the Ce‐Pd/WO<jats:sub>3</jats:sub> device for hydrogen leak (0.1 V/V%) in Al‐air batteries is also verified. This work can shed light on the development of a high‐efficiency H<jats:sub>2</jats:sub> sensor via the precise modulation of work functions.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"37 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876151","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}