International Journal of Hydrogen Energy最新文献_第8页

Investigation of the mechanism of methane formation from carbon impurities in zirconium–cobalt alloys 锆钴合金中碳杂质生成甲烷的机理研究

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.06.141

Kaiyuan Zhao, Lifei Liu, Wenna Ma, Shuhao Liang, Shilin Hu, Yiming Ye

{"title":"Investigation of the mechanism of methane formation from carbon impurities in zirconium–cobalt alloys","authors":"Kaiyuan Zhao, Lifei Liu, Wenna Ma, Shuhao Liang, Shilin Hu, Yiming Ye","doi":"10.1016/j.ijhydene.2025.06.141","DOIUrl":"10.1016/j.ijhydene.2025.06.141","url":null,"abstract":"<div><div>Zirconium-cobalt alloys have a wide range of applications for large-scale hydrogen isotope gas storage, but trace carbon impurities are inevitably introduced during metal smelting. Carbon impurities may react with hydrogen to form methane in the ZrCo hydrogen storage cycle, which is often overlooked in practical testing, especially when there have been relatively few studies about the direct formation of methane from carbon and hydrogen. In this study, we reveal the mechanism of C impurities in Zr–Co alloys reacting with hydrogen to form methane. By analyzing the gas composition released during the initial several hydrogen reaction cycles at different dehydrogenation temperatures of 573 K, 673 K and 773 K, it is found that the amount of methane produced tends to increase with increasing temperature. Sample analysis indicates that there is a process of carbon migration on a macroscopic scale that is associated with a reduction in apparent enthalpy change, and lattice restructuring during the high-temperature hydrogen release of Zr–Co metals appears to be the key factor influencing this process. In addition, by combining computational chemistry with experimental data, we have revealed a possible pathway for the methanation reaction on the crystal surface. The carbon atom is more prone to methanation than graphite because the formation of methyl radicals on the Zr–Co surface promotes methane production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"147 ","pages":"Article 149951"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing public acceptance of fuel cell vehicles in Germany: A perspective on pioneer users 在德国，越来越多的公众接受燃料电池汽车：对先锋用户的看法

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.05.356

Leander Kauschke , Jonas Vogt

{"title":"Increasing public acceptance of fuel cell vehicles in Germany: A perspective on pioneer users","authors":"Leander Kauschke , Jonas Vogt","doi":"10.1016/j.ijhydene.2025.05.356","DOIUrl":"10.1016/j.ijhydene.2025.05.356","url":null,"abstract":"<div><div>Fuel cell vehicles (FCVs) represent an intriguing alternative to battery electric vehicles (BEVs). While the acceptance of BEVs has been widely discussed, acceptance-based recommendations for promoting adoption of FCVs remain ambiguous.</div><div>This paper aims to improve our understanding by reporting results from a pioneer study based on the standardized Unified Theory of Acceptance and Use of Technology 2 (UTAUT2). The sample consists of n<sub>1</sub> = 258 registered customers of H2mobility in Germany. For effect control, another n<sub>2</sub> = 294 participant sample was drawn from the baseline population. Data were analyzed using SmartPLS 4 and importance-performance mapping (IPMA). Results demonstrate that FCV acceptance primarily relies on Perceived Usefulness, Perceived Conditions, and Normative Influence, while, surprisingly, hypotheses involving Perceived Risk and Green Attitude are rejected.</div><div>Finally, a discussion reveals ways to increase the level of public acceptance. Three practical strategies emerge. For future acceptance analyses, the authors suggest incorporating the young concept of ‘societal readiness’.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"148 ","pages":"Article 149726"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in tar conversion to H2-rich syngas during biomass and wastes gasification: Leveraging in-situ approach 生物质和废物气化过程中焦油转化为富h2合成气的最新进展：利用原位方法

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.150053

Mohammad Ali Nazari , Rajat Kumar Sharma , Juma Haydary

{"title":"Recent advances in tar conversion to H2-rich syngas during biomass and wastes gasification: Leveraging in-situ approach","authors":"Mohammad Ali Nazari , Rajat Kumar Sharma , Juma Haydary","doi":"10.1016/j.ijhydene.2025.150053","DOIUrl":"10.1016/j.ijhydene.2025.150053","url":null,"abstract":"<div><div>A major roadblock in biomass waste (BMW) and municipal solid waste (MSW) gasification is the formation of tar, an unavoidable by-product that reduces energy conversion efficiency and contaminates downstream systems. Tar can be addressed through in-situ or ex-situ methods. While ex-situ approaches are widely studied for their efficiency and ease of control, in-situ methods offer advantages such as improved mass and heat transfer, energy self-sufficiency, and lower infrastructure costs. Converting tar into high-value fuels and chemicals through feedstock selection, optimized conditions, and catalytic upgrading is an effective strategy, with catalysts playing a key role in enhancing product selectivity. This review summarizes recent progress in BMW/MSW tar upgrading through feedstock selection and reaction optimization, with a novel focus on the performance of monometallic (Ni, Fe) and bimetallic (Ni–Fe, Ni–Co) catalysts for converting tar into value-added fuels. Data from multiple studies are compiled, analyzed, and presented in figures and tables. It is noted that temperature plays a crucial role in the gasification process by promoting tar cracking reactions, with different gasification agents having specific critical temperatures typically ranging from 700 to 900 °C. Beyond this range, the reverse water-gas shift reaction (WGSR) may dominate, reducing H<sub>2</sub> production. Thermal catalytic tar upgrading with monometallic catalysts shows high upgrading efficiency but suffers from low stability and poor resistance to carbon deposition after a single use in lifetime tests. In contrast, bimetallic catalysts improve stability by approximately 3.5 times compared to monometallic catalysts and achieve over 95 % tar conversion into valuable products. Despite these advances, sintering and coke deposition remain significant challenges, highlighting the need for improved catalyst modification strategies to enhance both stability and activity.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"150 ","pages":"Article 150053"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced low-humidity performance of electrochemical hydrogen compressors through efficient water management with Janus gas diffusion layers 通过Janus气体扩散层的高效水管理，提高了电化学氢气压缩机的低湿性能

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.150129

Keguang Yao , Zhiyuan Zhu , Yuanbin Sun , Jiexin Zou , Min Wang , Haijiang Wang

{"title":"Enhanced low-humidity performance of electrochemical hydrogen compressors through efficient water management with Janus gas diffusion layers","authors":"Keguang Yao , Zhiyuan Zhu , Yuanbin Sun , Jiexin Zou , Min Wang , Haijiang Wang","doi":"10.1016/j.ijhydene.2025.150129","DOIUrl":"10.1016/j.ijhydene.2025.150129","url":null,"abstract":"<div><div>Effective water management is crucial for high-performance electrochemical hydrogen compression (EHC) under low-humidity conditions. This work aims to design and optimize gas diffusion layers (GDLs) with multilayer microporous layers (MPLs) to enhance water transport and retention. An EP40-based hydrophilic substrate reduces bulk resistance and improves membrane hydration compared to conventional hydrophobic GDLs. Incorporating a Nafion-based MPL with 20 % Nafion content lowers contact resistance and further boosts proton exchange membrane hydration. A novel Janus GDL (JM-GDL), combining PTFE- and Nafion-based MPLs, enables spontaneous, directional water transport and reduces membrane ohmic resistance. Electrochemical tests and Lattice Boltzmann simulations demonstrate that MEAs with JM-GDL achieve 2.8 A/cm<sup>2</sup> current density and 1.0 MPa output pressure at 50 % relative humidity and 0.3 V within 300 s. This approach significantly improves EHC performance, providing strategic insights for advanced GDL design in low-humidity environments.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"150 ","pages":"Article 150129"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights of light spectra on biohydrogen production by photo-fermentation 光发酵产氢的光谱研究

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.150088

Gabriela Aparecida Santos, Larissa Desordi Bortoli, Daniela Aparecida Santos, Fran Sergio Lobato, Vicelma Luiz Cardoso, Fabiana Regina Xavier Batista

{"title":"Insights of light spectra on biohydrogen production by photo-fermentation","authors":"Gabriela Aparecida Santos, Larissa Desordi Bortoli, Daniela Aparecida Santos, Fran Sergio Lobato, Vicelma Luiz Cardoso, Fabiana Regina Xavier Batista","doi":"10.1016/j.ijhydene.2025.150088","DOIUrl":"10.1016/j.ijhydene.2025.150088","url":null,"abstract":"<div><div>Biohydrogen production by purple non-sulfur bacteria typically relies on infrared light to excite bacteriochlorophyll a. However, the roles of visible wavelengths, especially red and blue, and the contribution of carotenoids remain poorly defined. In the current study, it was performed the first unified comparison of four LED spectra in a co-culture of <em>Rhodobacter capsulatus</em> and <em>Rhodospirillum rubrum</em> using lactose from milk whey permeate. Small‐scale tests (50 mL) under Cool White, Infrared, and Targeted-Spectrum LEDs revealed that Cool White LEDs achieved the highest H<sub>2</sub> productivity (8.23 mmol H<sub>2</sub> (L.day)). Remarkably, the Targeted Spectrum LED alone yielded significant H<sub>2</sub> (5.76 ± 0.14 mol H<sub>2</sub>/mol lactose), demonstrating that pronounced carotenoid excitation can drive production with minimal emission for BChl <em>ɑ</em> excitation. The visible wavelengths can scatter more uniformly, benefiting non‐stirred systems, while Infrared alone underperforms when cells settle. Scaling to a 2.1 L stirred flat‐plate reactor increased productivity to 18.64 mmol H<sub>2</sub> (L.day) (3.26 % LCE), applying the Cool white LED as light source. Raising light intensity to 5,000 lx and renewing half the medium further boosted productivity to 26.93 mmol H<sub>2</sub> (L.day) (4.49 % LCE) while maintaining an optimal SOLR (∼4.8 g lactose/ g<sub>VS</sub>.h). Finally, bi‐logistic and modified Gompertz models accurately described multiphasic H<sub>2</sub> accumulation, offering a robust framework for optimizing complex photofermentative systems. This work highlights the need to tailor light spectra, reactor design, and process control to maximize biohydrogen yields.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"149 ","pages":"Article 150088"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TiO2 and non-metal doped TiO2 nanoparticles: Synthesis and applications for green energy production 二氧化钛和非金属掺杂纳米TiO2：合成及其在绿色能源生产中的应用

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.06.214

Wisal Ahmad , Roman Shah , Javed Ali Khan , Noor S. Shah , Abdulaziz Al-Anazi , Saeed Saad Alelyani , Yasar N. Kavil , Roberto Castro-Muñoz , Grzegorz Boczkaj

{"title":"TiO2 and non-metal doped TiO2 nanoparticles: Synthesis and applications for green energy production","authors":"Wisal Ahmad , Roman Shah , Javed Ali Khan , Noor S. Shah , Abdulaziz Al-Anazi , Saeed Saad Alelyani , Yasar N. Kavil , Roberto Castro-Muñoz , Grzegorz Boczkaj","doi":"10.1016/j.ijhydene.2025.06.214","DOIUrl":"10.1016/j.ijhydene.2025.06.214","url":null,"abstract":"<div><div>TiO<sub>2</sub> nanoparticles (NPs), due to their outstanding electrochemical properties, stability, low-cost and nontoxicity, have potential applications in multiple fields including green energy production. However, the practical applications of TiO<sub>2</sub> NPs as photocatalysts are limited due to their wide bandgap (i.e., 3.0–3.2 eV). Thanks to the non-metal doping strategy-a potential and a bandgap engineering approach to reduce the bandgap of semiconductors-the activation of TiO<sub>2</sub> NPs can be achieved by visible light via doping TiO<sub>2</sub> with non-metal elements. In this review, the promising synthesis methods of TiO<sub>2</sub> and non-metal doped TiO<sub>2</sub> (NM-doped TiO<sub>2</sub>) NPs, including hydrothermal, sol-gel, ionic liquid assisted, electrospinning, and microbial-mediated and plant-mediated methods, have been summarized. In addition, their applications in green energy production (i.e., generation of H<sub>2</sub>, CH<sub>4</sub> etc.) were discussed in detail. Moreover, the mechanism and kinetics of photocatalytic water splitting, photocatalytic reforming, and CO<sub>2</sub> and N<sub>2</sub> reduction by TiO<sub>2</sub> and NM-doped TiO<sub>2</sub> NPs were explained. Due to their higher efficiency, the applications of single-atom catalysts (SACs) anchored on TiO<sub>2</sub> for H<sub>2</sub> production have also been discussed. Finally, the major challenges and issues in practical applications of TiO<sub>2</sub>-based nanomaterials for green energy production have been underlined. This review serves as a roadmap for the researchers working in the field of environmental sustainability and green energy production to twist the TiO<sub>2</sub>-based nanomaterials to overcome their inherent shortcomings which prevent them from large-scale practical applications.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"149 ","pages":"Article 150024"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar-driven conversions of plastic waste to valuable chemicals with green hydrogen production 太阳能驱动的塑料废物转化为有价值的化学品，绿色氢生产

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-26 DOI: 10.1016/j.ijhydene.2025.150149

Irshad Ahmad , Jingjing Zhang , Mohammed Qasem Alfaifi , Samia Ben Ahmed , Gao Li

{"title":"Solar-driven conversions of plastic waste to valuable chemicals with green hydrogen production","authors":"Irshad Ahmad , Jingjing Zhang , Mohammed Qasem Alfaifi , Samia Ben Ahmed , Gao Li","doi":"10.1016/j.ijhydene.2025.150149","DOIUrl":"10.1016/j.ijhydene.2025.150149","url":null,"abstract":"<div><div>The conversion of plastic waste into renewable fuels through photocatalytic processes represents a promising pathway toward addressing both environmental pollution and energy demands. This review presents a detailed examination of solar-driven plastic photoreforming, a strategy that leverages water and sunlight to generate H<sub>2</sub> and other value-added compounds from discarded polymers. We begin by outlining the fundamental mechanisms of this technology, emphasizing how charge carriers and reactive species mediate concurrent plastic oxidation and H<sub>2</sub> evolution or CO<sub>2</sub> reduction. Key mechanistic insights are discussed, particularly those related to oxidative degradation pathways and the roles of reactive oxygen species. Then, recent advances in photocatalyst development and system integration using various semiconductors, with attention to catalyst design parameters, system configuration, and coupling with secondary processes. While this approach offers significant potential, practical deployment remains constrained by challenges such as low catalytic efficiency, carbon management inefficiencies, pretreatment needs, and scale-up limitations. To address these, we provide a roadmap for future development, including recommendations for material innovation, mechanistic exploration, and system-level optimization. This review aims to serve as a comprehensive guide for researchers seeking to advance the field of solar-assisted plastic valorization and contribute to the establishment of a circular, carbon-neutral economy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"149 ","pages":"Article 150149"},"PeriodicalIF":8.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mn–Ce modified NiP electrocatalysts for HER: A combined computational and electrochemical study Mn-Ce修饰的纳米颗粒电催化剂：计算与电化学相结合的研究

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-25 DOI: 10.1016/j.ijhydene.2025.150068

Thushara Remadevi , Anju Rajan , Akhila Muhammed , Sumi Vijayakumari Sasidharan Nair , Raghu Chatanathodi , Rijith Sreenivasan

{"title":"Mn–Ce modified NiP electrocatalysts for HER: A combined computational and electrochemical study","authors":"Thushara Remadevi , Anju Rajan , Akhila Muhammed , Sumi Vijayakumari Sasidharan Nair , Raghu Chatanathodi , Rijith Sreenivasan","doi":"10.1016/j.ijhydene.2025.150068","DOIUrl":"10.1016/j.ijhydene.2025.150068","url":null,"abstract":"<div><div>The task of developing inexpensive, more efficient, and stable catalysts for hydrogen evolution reaction in water splitting is increasingly challenging. In this study, we developed Mn–O–Ce embedded NiP coating using electroless plating, which proved to be a competent electrocatalyst for hydrogen evolution reaction (HER). To synthesize Mn–O–Ce composite, we utilized a thermal decomposition method. The physicochemical characterization of Mn–O–Ce/NiP coating envisaged an improved surface area. Moreover, the catalyst, which was provided by CeO<sub>2</sub> and MnO<sub>2</sub> particles in the NiP matrix, increased the surface roughness, thereby enhancing the number of surface-active sites. Electrochemical characterization showed that Mn–O–Ce/NiP coating exhibited outstanding catalytic performance with a small overpotential of 120 mV and a small Tafel slope of 123 mV dec<sup>−1</sup> at a current density of 10 mA cm<sup>−2</sup>. We also explored its catalytic performance for the hydrogen evolution reaction (HER) by computing the free energy change associated with hydrogen evolution. Furthermore, the coating demonstrated excellent electrochemical stability in alkaline solution. This study provides a feasible option for developing a composite incorporated electrode with desirable electrochemical properties for the extensive production of hydrogen.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"148 ","pages":"Article 150068"},"PeriodicalIF":8.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Enhancement of BaCeO3 OER performance by generating a nanohybrid with gCN for electrochemical water splitting” [Int J Hydrogen Energy 81 (2024) 562-572] “制备纳米杂化物用于电化学水分解的BaCeO3 OER性能的提高”[J] .氢能学报，81(2024):562-572。

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-25 DOI: 10.1016/j.ijhydene.2025.06.102

Nirma Rasool , Areej S. Alqarni , Khursheed Ahmad , Abdullah G. Al Sehemi , A.M.A. Henaish , Salma Aman

引用次数: 0

Dual wetting electrode surfaces for alkaline water electrolysis 用于碱水电解的双润湿电极表面

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-06-25 DOI: 10.1016/j.ijhydene.2025.06.118

Hannes Rox , Kerstin Eckert , Fabian Ränke , Lis Geraldine Zschach , Xuegeng Yang , Gerd Mutschke , Andrés Fabián Lasagni , Robert Baumann

{"title":"Dual wetting electrode surfaces for alkaline water electrolysis","authors":"Hannes Rox , Kerstin Eckert , Fabian Ränke , Lis Geraldine Zschach , Xuegeng Yang , Gerd Mutschke , Andrés Fabián Lasagni , Robert Baumann","doi":"10.1016/j.ijhydene.2025.06.118","DOIUrl":"10.1016/j.ijhydene.2025.06.118","url":null,"abstract":"<div><div>Nickel electrodes are widely used in alkaline water electrolysis, yet the remaining electrode overpotentials are leading to significant losses in electrochemical performance. These are partly due to the electrogenerated bubbles growing at the surface. Tuning the nickel surface for better bubble management is therefore of great relevance. Here, Direct Laser Writing is used to generate pillar-like surfaces with dual wetting behavior. This combines hydrophilic grooves with hydrophobic ripples on top of each pillar. Furthermore, the grooves show superspreading properties due to the capillary forces within them, which enables a fully wetted surface. The hydrophobic pillars serve as initial nucleation sites where the bubbles remain pinned during their growth. This results in a larger detachment size of the bubbles. In combination with an increase of the electrochemically active surface area by a factor of 9, a reduction of the overpotential for hydrogen evolution reaction of <span><math><mo>≈</mo></math></span> 24% at -100mAcm<sup>−2</sup> is found.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"149 ","pages":"Article 149928"},"PeriodicalIF":8.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0