EcoEnergy最新文献

{"title":"A Review of Grain Boundaries: Formation Mechanism, Synthesis Strategy, and Application in Electrocatalysis","authors":"Jingyu Gao,&nbsp;Fengming Zhou,&nbsp;Xinying Li,&nbsp;Ying Deng,&nbsp;Zexing Wu,&nbsp;Siyuan Feng,&nbsp;Yujing Zhu,&nbsp;Dan Zhang,&nbsp;Zhenyu Xiao","doi":"10.1002/ece2.70074","DOIUrl":"https://doi.org/10.1002/ece2.70074","url":null,"abstract":"<p>Key electrocatalytic reactions such as HER, OER, ORR, CO₂RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs), with their undercoordinated sites, lattice strain, and excess free volume, present a promising strategy to overcome the activity–stability trade-off. Yet, systematic reviews on GB engineering in electrocatalysis remain limited. This review provides a comprehensive framework, beginning with the fundamental formation mechanisms of GBs, integrating experimental and theoretical insights into the factors governing boundary evolution. Six synthesis methods—hydrothermal, electrodeposition, vapor phase, ball milling, molten salt, and laser ablation—are critically evaluated in terms of process parameters, resulting boundary characteristics, and practical trade-offs. Their applications across five major electrocatalytic reactions are examined, correlating boundary features such as misorientation angle, type, and lattice strain with catalytic outcomes in activity, selectivity, and stability. We also explore the emerging role of machine learning in the rational design of GB architectures, including property prediction, phase discovery, and interpretable modeling. By integrating these aspects, this review establishes a unified framework for a rational design of high-performance, boundary-rich electrocatalysts for sustainable energy conversion.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258247","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}

{"title":"Low-Temperature in Situ Upgrading of Ultra-Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability","authors":"Li Wang,&nbsp;Ji-Xiang Guo,&nbsp;Qiming Huang,&nbsp;Kunpeng Li,&nbsp;Chi Li,&nbsp;Yajie Wu","doi":"10.1002/ece2.70080","DOIUrl":"https://doi.org/10.1002/ece2.70080","url":null,"abstract":"<p>Ultra-deep heavy oil is an important unconventional resource, but its extremely high viscosity, poor mobility, and the high energy demand for conventional recovery methods severely limit its efficient and sustainable production. To address these limitations, a triflate-functionalized Ni–Ce/MOF superacid catalyst (Ni–Ce/MOF–OTf), based on a UiO-66(Ce)–type (BTC-based) framework, was developed to enable low-temperature in situ upgrading under near-reservoir conditions. The catalyst was synthesized through a two-step post-synthetic modification route using a Ni–Ce/MOF precursor, involving acid activation followed by grafting of triflate groups onto the framework. This design was intended to integrate strong Brønsted acidity, tunable Ni/Ce Lewis acid sites, and pore confinement within a single catalytic microenvironment, thereby promoting selective bond cleavage and suppressing secondary repolymerization. Under reservoir-mimicking conditions (∼140°C), Ni–Ce/MOF–OTf achieved a viscosity reduction of 92.11% within 12 h, maintained viscosity rebound below 10% over 60 days, and retained about 80% of its activity after four cycles. Structural characterization and theoretical calculations showed that triflate functionalization enhanced acidity, increased oxygen vacancy density, and strengthened metal–ligand interactions, enabling efficient cleavage of C–C/<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>β</mi>\u0000 </mrow>\u0000 <annotation> $beta $</annotation>\u0000 </semantics></math>-C–C, C–S, and C–O bonds at a lower temperature. Core-scale physical simulation further demonstrated a recovery factor of 90.25% through gas-assisted catalytic upgrading. In addition, techno-economic and cradle-to-wellhead assessments indicated improved economic competitiveness and the lowest cradle-to-wellhead carbon footprint among the evaluated heavy oil recovery routes. These results demonstrate an effective materials–reaction–engineering strategy for cleaner and more sustainable utilization of ultra-deep heavy oil.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258527","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}

{"title":"New-Generation Integrated Devices: Multiple-Energy Utilization and Integration Systems Based on Perovskite Photovoltaics","authors":"Yihuai Huang,&nbsp;Wenguang Zhang,&nbsp;Yuchen Xiong,&nbsp;Zijun Yi,&nbsp;Changkai Huang,&nbsp;Qinghui Jiang,&nbsp;Abdul Basit,&nbsp;Guibin Shen,&nbsp;Yubo Luo,&nbsp;Xin Li,&nbsp;Junyou Yang","doi":"10.1002/ece2.70083","DOIUrl":"https://doi.org/10.1002/ece2.70083","url":null,"abstract":"<p>The pursuit of sustainable and multifunctional energy technologies has spurred the development of integrated device architectures that can simultaneously harvest, convert, and store multiple forms of energy. Metal halide perovskite solar cells (PSCs), owing to their high power conversion efficiencies, low-cost fabrication, tunable bandgaps, and mechanical flexibility, have emerged as transformative candidates for multifunctional energy platforms. Recent advances highlight the potential of PSC-based hybrid systems across four major directions: (i) perovskite–thermoelectric (PSC-TE) devices that recover sub-bandgap and thermalized photon losses to surpass the Shockley–Queisser limit; (ii) integrated photovoltaic–electrochemical (PV-EC) systems that directly drive water splitting and CO₂ reduction for solar fuel generation; (iii) PSC-based self-charging energy storage devices, including photocapacitors and photobatteries, enabling autonomous power supplies; and (iv) building-integrated PSC platforms offering transparency, flexibility, and multifunctionality for urban energy infrastructures. Particular attention is devoted to device configurations, interfacial engineering strategies, thermal management, and performance optimization. Finally, key challenges such as long-term operational stability, scalable fabrication, and interfacial/thermal losses are discussed, alongside future opportunities to enable PSC-based integrated devices to evolve from proof-of-concept demonstrations to practical solutions for next-generation sustainable energy systems.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259223","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}

{"title":"Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis","authors":"Xiaohui Du,&nbsp;Xinyu Li,&nbsp;Jianna Li,&nbsp;Tao Sun","doi":"10.1002/ece2.70072","DOIUrl":"https://doi.org/10.1002/ece2.70072","url":null,"abstract":"<p>Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future energy system, in which seawater electrolysis for hydrogen production is an important direction in various techniques. The key to this technology lies in synthesizing a high-performance catalyst with high selectivity, activity, and stability, while choosing materials that are widely available, easy to extract, and environmentally friendly and low cost. In recent years, transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. In this review, we systematically summarize the achievement of TMCs/oxides in hydrogen production by seawater electrolysis focusing on the strategies to construct advanced catalysts. The optimization strategies including dopant, heterojunction construction and defect engineering are discussed in detail, covering preparation processes, catalytic performance, structural characterization, catalytic mechanisms, the structure-activity relationship between microstructures and catalytic activity, as well as the design principles for boosting industrial application. Finally, the existing challenges and future development directions of TMCs/oxides materials for seawater electrolysis hydrogen production are summarized and prospected.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259452","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}

{"title":"Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis","authors":"Xiaohui Du,&nbsp;Xinyu Li,&nbsp;Jianna Li,&nbsp;Tao Sun","doi":"10.1002/ece2.70072","DOIUrl":"https://doi.org/10.1002/ece2.70072","url":null,"abstract":"<p>Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future energy system, in which seawater electrolysis for hydrogen production is an important direction in various techniques. The key to this technology lies in synthesizing a high-performance catalyst with high selectivity, activity, and stability, while choosing materials that are widely available, easy to extract, and environmentally friendly and low cost. In recent years, transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. In this review, we systematically summarize the achievement of TMCs/oxides in hydrogen production by seawater electrolysis focusing on the strategies to construct advanced catalysts. The optimization strategies including dopant, heterojunction construction and defect engineering are discussed in detail, covering preparation processes, catalytic performance, structural characterization, catalytic mechanisms, the structure-activity relationship between microstructures and catalytic activity, as well as the design principles for boosting industrial application. Finally, the existing challenges and future development directions of TMCs/oxides materials for seawater electrolysis hydrogen production are summarized and prospected.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259451","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}

{"title":"Engineering the Lattice and Electronic Configurations of N-Rich-CoMoCN by Mo Doping and N Enrichment for Enhanced Water Splitting","authors":"Huimin Yang,&nbsp;Yue Xiao,&nbsp;Zhuo Wang,&nbsp;Mingfang Zhang,&nbsp;Haimei Xu,&nbsp;Yunzhao Fan,&nbsp;Chao Feng,&nbsp;Qingcheng Hu,&nbsp;Chunhua Yuan,&nbsp;Yang Fu,&nbsp;Lingfeng Zhu,&nbsp;Songbo Li,&nbsp;Tianyi Ma","doi":"10.1002/ece2.70069","DOIUrl":"https://doi.org/10.1002/ece2.70069","url":null,"abstract":"<p>Developing efficient, low-cost electrocatalysts for overall water splitting (OWS) is critical for advancing hydrogen energy technologies. Here, we fabricate Mo-incorporated N-rich-CoMoCN electrocatalyst from ZIF-67 (CoCN material), ammonium molybdate, and melamine precursors. This catalyst, featuring the predominant Co/Co₆Mo₆C₂ heterojunction and abundant surface-layered architecture, collectively provides an ideal microenvironment for catalytic reactions and facilitates charge transfer. In alkaline media, it exhibits outstanding bifunctional activity, delivering overpotentials of only 107 and 256 mV for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, at a current density of 10 mA cm⁻², far surpassing the performance of CoCN and CoMoCN. Notably, the N-rich-CoMoCN-based electrolyzer requires only 1.52 V to achieve 10 mA cm⁻² in a two-electrode system with 1.0 M KOH. The comprehensive structural and electrochemical characterizations reveal that the incorporation of Mo and N modulates the catalyst's morphology as well as lattice and electronic configurations, resulting in the strong electronic interaction between Co, Mo, and N, thereby accelerating the intrinsic reaction kinetics. Density functional theory (DFT) calculation further uncovers that N enrichment can effectively modulate the electronic state distribution of Co and Mo, thereby promoting interfacial charge rearrangement and regulating the <i>d</i>-band center of the catalyst. The synergistic effect between heterostructure construction and N enrichment optimizes the electronic structure and surface energy of the N-rich-CoMoCN catalyst, which facilitates charge transfer, ultimately leading to enhanced electrocatalytic activity in OWS performance. This work highlights an efficient strategy for designing high-performance bifunctional catalysts from MOF-derived heterostructures for sustainable hydrogen production.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259543","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}

{"title":"New-Generation Integrated Devices: Multiple-Energy Utilization and Integration Systems Based on Perovskite Photovoltaics","authors":"Yihuai Huang,&nbsp;Wenguang Zhang,&nbsp;Yuchen Xiong,&nbsp;Zijun Yi,&nbsp;Changkai Huang,&nbsp;Qinghui Jiang,&nbsp;Abdul Basit,&nbsp;Guibin Shen,&nbsp;Yubo Luo,&nbsp;Xin Li,&nbsp;Junyou Yang","doi":"10.1002/ece2.70083","DOIUrl":"https://doi.org/10.1002/ece2.70083","url":null,"abstract":"<p>The pursuit of sustainable and multifunctional energy technologies has spurred the development of integrated device architectures that can simultaneously harvest, convert, and store multiple forms of energy. Metal halide perovskite solar cells (PSCs), owing to their high power conversion efficiencies, low-cost fabrication, tunable bandgaps, and mechanical flexibility, have emerged as transformative candidates for multifunctional energy platforms. Recent advances highlight the potential of PSC-based hybrid systems across four major directions: (i) perovskite–thermoelectric (PSC-TE) devices that recover sub-bandgap and thermalized photon losses to surpass the Shockley–Queisser limit; (ii) integrated photovoltaic–electrochemical (PV-EC) systems that directly drive water splitting and CO₂ reduction for solar fuel generation; (iii) PSC-based self-charging energy storage devices, including photocapacitors and photobatteries, enabling autonomous power supplies; and (iv) building-integrated PSC platforms offering transparency, flexibility, and multifunctionality for urban energy infrastructures. Particular attention is devoted to device configurations, interfacial engineering strategies, thermal management, and performance optimization. Finally, key challenges such as long-term operational stability, scalable fabrication, and interfacial/thermal losses are discussed, alongside future opportunities to enable PSC-based integrated devices to evolve from proof-of-concept demonstrations to practical solutions for next-generation sustainable energy systems.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259536","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}

{"title":"Engineering the Lattice and Electronic Configurations of N-Rich-CoMoCN by Mo Doping and N Enrichment for Enhanced Water Splitting","authors":"Huimin Yang,&nbsp;Yue Xiao,&nbsp;Zhuo Wang,&nbsp;Mingfang Zhang,&nbsp;Haimei Xu,&nbsp;Yunzhao Fan,&nbsp;Chao Feng,&nbsp;Qingcheng Hu,&nbsp;Chunhua Yuan,&nbsp;Yang Fu,&nbsp;Lingfeng Zhu,&nbsp;Songbo Li,&nbsp;Tianyi Ma","doi":"10.1002/ece2.70069","DOIUrl":"https://doi.org/10.1002/ece2.70069","url":null,"abstract":"<p>Developing efficient, low-cost electrocatalysts for overall water splitting (OWS) is critical for advancing hydrogen energy technologies. Here, we fabricate Mo-incorporated N-rich-CoMoCN electrocatalyst from ZIF-67 (CoCN material), ammonium molybdate, and melamine precursors. This catalyst, featuring the predominant Co/Co₆Mo₆C₂ heterojunction and abundant surface-layered architecture, collectively provides an ideal microenvironment for catalytic reactions and facilitates charge transfer. In alkaline media, it exhibits outstanding bifunctional activity, delivering overpotentials of only 107 and 256 mV for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, at a current density of 10 mA cm⁻², far surpassing the performance of CoCN and CoMoCN. Notably, the N-rich-CoMoCN-based electrolyzer requires only 1.52 V to achieve 10 mA cm⁻² in a two-electrode system with 1.0 M KOH. The comprehensive structural and electrochemical characterizations reveal that the incorporation of Mo and N modulates the catalyst's morphology as well as lattice and electronic configurations, resulting in the strong electronic interaction between Co, Mo, and N, thereby accelerating the intrinsic reaction kinetics. Density functional theory (DFT) calculation further uncovers that N enrichment can effectively modulate the electronic state distribution of Co and Mo, thereby promoting interfacial charge rearrangement and regulating the <i>d</i>-band center of the catalyst. The synergistic effect between heterostructure construction and N enrichment optimizes the electronic structure and surface energy of the N-rich-CoMoCN catalyst, which facilitates charge transfer, ultimately leading to enhanced electrocatalytic activity in OWS performance. This work highlights an efficient strategy for designing high-performance bifunctional catalysts from MOF-derived heterostructures for sustainable hydrogen production.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259544","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}

{"title":"Design and Operation of Photovoltaic-Driven Electrocatalytic Water Splitting for Hydrogen Production","authors":"Zhenlan Dou,&nbsp;Ying Zhang,&nbsp;Chunyan Zhang,&nbsp;Jieshi Shen,&nbsp;Miaoqiu Hu,&nbsp;Haifei Wang,&nbsp;Lei Guo","doi":"10.1002/ece2.70084","DOIUrl":"https://doi.org/10.1002/ece2.70084","url":null,"abstract":"<p>With the rapid development of photovoltaic (PV) technologies, the storage and transportation of the electricity generated by photovoltaics have received increasing attention. Advanced technologies that integrate photovoltaic energy conversion and storage are important for handling the regional and intermittent features of solar energy, thereby enabling its efficient utilization. Recently, photovoltaic-driven electrocatalytic water splitting (PV–EC) for hydrogen production has been considered one of the most promising technologies. A deep understanding of both photovoltaic systems and electrocatalytic water splitting systems is essential for designing and evaluating a highly efficient photovoltaic-driven electrocatalysis (PV–EC) system. This review aims to provide key knowledge and guidance on PV–EC systems. It begins by introducing the characteristics of various photovoltaic technologies, which would offer guidance on selecting the most suitable PV system for matching with the electrolysis process. It then analyzes the principles, advantages, and drawbacks of various PV–EC configurations, along with strategies for effectively coupling PV and EC units. This would provide guidance on regulating operating conditions in PV–EC systems. Finally, it discusses the challenges that hinders high solar-to-hydrogen efficiency and suggests future research directions to enhance practical applications.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259340","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}

{"title":"Design and Operation of Photovoltaic-Driven Electrocatalytic Water Splitting for Hydrogen Production","authors":"Zhenlan Dou,&nbsp;Ying Zhang,&nbsp;Chunyan Zhang,&nbsp;Jieshi Shen,&nbsp;Miaoqiu Hu,&nbsp;Haifei Wang,&nbsp;Lei Guo","doi":"10.1002/ece2.70084","DOIUrl":"https://doi.org/10.1002/ece2.70084","url":null,"abstract":"<p>With the rapid development of photovoltaic (PV) technologies, the storage and transportation of the electricity generated by photovoltaics have received increasing attention. Advanced technologies that integrate photovoltaic energy conversion and storage are important for handling the regional and intermittent features of solar energy, thereby enabling its efficient utilization. Recently, photovoltaic-driven electrocatalytic water splitting (PV–EC) for hydrogen production has been considered one of the most promising technologies. A deep understanding of both photovoltaic systems and electrocatalytic water splitting systems is essential for designing and evaluating a highly efficient photovoltaic-driven electrocatalysis (PV–EC) system. This review aims to provide key knowledge and guidance on PV–EC systems. It begins by introducing the characteristics of various photovoltaic technologies, which would offer guidance on selecting the most suitable PV system for matching with the electrolysis process. It then analyzes the principles, advantages, and drawbacks of various PV–EC configurations, along with strategies for effectively coupling PV and EC units. This would provide guidance on regulating operating conditions in PV–EC systems. Finally, it discusses the challenges that hinders high solar-to-hydrogen efficiency and suggests future research directions to enhance practical applications.</p>","PeriodicalId":100387,"journal":{"name":"EcoEnergy","volume":"4 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259341","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}