Pub Date : 2026-02-06DOI: 10.1016/j.electacta.2026.148390
Hao Hu, Bo Sun, Kexing Song, Zhipeng Zhao, Shuaiyu Ma, Lin Ji, Xujun Wang, Haoyan Cheng
Electrodeposited copper foils serve as indispensable materials for both electronic circuits and lithium-ion batteries, where their mechanical properties play a decisive role in determining device reliability. Despite the widespread use of chemical additives to tailor copper foil properties, the intricate interactions among multiple additives and their underlying mechanisms remain poorly understood. In this study, we systematically investigate the synergistic effects of sodium alcohol thiyl propane sulfonate (HP) and hydroxyethyl cellulose (HEC) on Cu2+ ions electrodeposition, copper microstructure, and mechanical performance. Through optimization, the simultaneous addition of 4.0 mg/L HP and 80 mg/L HEC produced copper foils with the excellent mechanical performance, tensile strength of 674 MPa and elongation of 8.2%. Comprehensive electrochemical and structural analyses reveal that the HP+HEC binary system strongly influences cathodic polarization, promoting refined grain growth and increasing the density of Σ3 twin boundaries, thereby synergistically enhance both strength and ductility. This work deepens our understanding of additive-modulated electrodeposition mechanisms and offers a valuable design framework for engineering high-performance copper foils tailored for demanding applications.
{"title":"Unveiling the synergistic mechanism of binary additives for tailoring microstructure and enhancing the properties of high-performance electrodeposited copper foils","authors":"Hao Hu, Bo Sun, Kexing Song, Zhipeng Zhao, Shuaiyu Ma, Lin Ji, Xujun Wang, Haoyan Cheng","doi":"10.1016/j.electacta.2026.148390","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148390","url":null,"abstract":"Electrodeposited copper foils serve as indispensable materials for both electronic circuits and lithium-ion batteries, where their mechanical properties play a decisive role in determining device reliability. Despite the widespread use of chemical additives to tailor copper foil properties, the intricate interactions among multiple additives and their underlying mechanisms remain poorly understood. In this study, we systematically investigate the synergistic effects of sodium alcohol thiyl propane sulfonate (HP) and hydroxyethyl cellulose (HEC) on Cu<sup>2+</sup> ions electrodeposition, copper microstructure, and mechanical performance. Through optimization, the simultaneous addition of 4.0 mg/L HP and 80 mg/L HEC produced copper foils with the excellent mechanical performance, tensile strength of 674 MPa and elongation of 8.2%. Comprehensive electrochemical and structural analyses reveal that the HP+HEC binary system strongly influences cathodic polarization, promoting refined grain growth and increasing the density of Σ3 twin boundaries, thereby synergistically enhance both strength and ductility. This work deepens our understanding of additive-modulated electrodeposition mechanisms and offers a valuable design framework for engineering high-performance copper foils tailored for demanding applications.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"48 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-06DOI: 10.1016/j.electacta.2026.148389
Shaojie Lei, Dezhang Ren, Jian Yang, Fan Lin, Zichen Li, Tengfei Li, Yan Jin, Zhibao Huo
{"title":"Ti-induced construction of RuO2 solid solution for achieving high selectivity in ·OH generation and long lifespan electrocatalytic degradation of Methylene Blue","authors":"Shaojie Lei, Dezhang Ren, Jian Yang, Fan Lin, Zichen Li, Tengfei Li, Yan Jin, Zhibao Huo","doi":"10.1016/j.electacta.2026.148389","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148389","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"2 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-06DOI: 10.1016/j.electacta.2026.148399
Rippei Suzuki, Mikiko Saito, Takayuki Homma
{"title":"Electrodeposition of CoPd and CoNiPd ultrathin films with low Co composition and perpendicular magnetic anisotropy for magnetic memory applications","authors":"Rippei Suzuki, Mikiko Saito, Takayuki Homma","doi":"10.1016/j.electacta.2026.148399","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148399","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"23 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study presents the development and optimization of a catalytic ink using biochar (BC) as a cathodic electrode material for green hydrogen production through the hydrogen evolution reaction (HER). BC, derived from biomass conversion residues, was utilized as a porous support for transition metal catalysts, specifically nickel and molybdenum. The resulting Ni-BCNiMo composite demonstrated enhancement of the electrocatalytic performance for HER, achieving an overpotential of -95 mV at a current density of -10 mA cm⁻² and a Tafel slope of -112 mV dec⁻¹. The chronopotentiometry confirms stability over a period of 24 h at a current density of -400 mA cm−2, which indicates efficient HER kinetics. A central composite design was applied to optimize the ink formulation and the experimental conditions, yielding a high correlation with experimental data (adjusted R² = 89%). These findings suggest that BC, when properly engineered, can serve as a cost-effective, high-performance alternative to conventional carbon materials, supporting the development of scalable, and sustainable technologies for green hydrogen generation.
研究了以生物炭（BC）为阴极电极材料，通过析氢反应（HER）实现绿色制氢的催化墨水的开发与优化。从生物质转化残渣中提取的BC被用作过渡金属催化剂的多孔载体，特别是镍和钼。所得到的Ni-BCNiMo复合材料证明了HER电催化性能的增强，在电流密度为-10 mA cm -⁻²的情况下实现了-95 mV的过电位和-112 mV dec -⁻¹的塔菲尔斜率。时间电位测定证实了在-400 mA cm - 2电流密度下24小时内的稳定性，这表明了高效的HER动力学。采用中心复合设计优化油墨配方和实验条件，与实验数据有较高的相关性（调整后R² = 89%）。这些发现表明，如果设计得当，BC可以作为传统碳材料的成本效益高，高性能的替代品，支持可扩展和可持续的绿色制氢技术的发展。
{"title":"Development and optimization of a biochar-based/Ni-Mo catalyst as efficient cathode electrode to produce hydrogen by alkaline electrolysis","authors":"Hillary Henao-toro, Santiago Cartagena Ocampo, Jorge Andrés Calderón Gutiérrez, Edwin Chica, Ainhoa Rubio-Clemente","doi":"10.1016/j.electacta.2026.148401","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148401","url":null,"abstract":"This study presents the development and optimization of a catalytic ink using biochar (BC) as a cathodic electrode material for green hydrogen production through the hydrogen evolution reaction (HER). BC, derived from biomass conversion residues, was utilized as a porous support for transition metal catalysts, specifically nickel and molybdenum. The resulting Ni-BCNiMo composite demonstrated enhancement of the electrocatalytic performance for HER, achieving an overpotential of -95 mV at a current density of -10 mA cm⁻² and a Tafel slope of -112 mV dec⁻¹. The chronopotentiometry confirms stability over a period of 24 h at a current density of -400 mA cm<sup>−2</sup>, which indicates efficient HER kinetics. A central composite design was applied to optimize the ink formulation and the experimental conditions, yielding a high correlation with experimental data (adjusted R² = 89%). These findings suggest that BC, when properly engineered, can serve as a cost-effective, high-performance alternative to conventional carbon materials, supporting the development of scalable, and sustainable technologies for green hydrogen generation.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"87 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-05DOI: 10.1016/j.electacta.2026.148381
Juan Wei, Jin-Tao Cheng, Min Luo, Xi Wang, Xiao-Yu Xie, Xian Wu, Wei Shen, Pang-Da Dai, Zong-Yin Song, Meng Yang
{"title":"Highly sensitive electroanalysis of Pb(II) in Chinese herbal medicine by the activated Co site and electron transfer medium S over Co9S8@MoS2 heterostructures","authors":"Juan Wei, Jin-Tao Cheng, Min Luo, Xi Wang, Xiao-Yu Xie, Xian Wu, Wei Shen, Pang-Da Dai, Zong-Yin Song, Meng Yang","doi":"10.1016/j.electacta.2026.148381","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148381","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"90 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-05DOI: 10.1016/j.electacta.2026.148391
Jiabao Li, Xinwei Zhang, Hongxia Li
The accumulation of bubbles on the electrode surface can block the active catalytic sites, hindering the transmission of ions and electrolytes, thereby limiting the achievable current density. Inspired by fish scales and petals, this study designed a biomimetic electrode with multi-scale bubble management capabilities. By combining topological electrode design with surface modification of nanostructures, this electrode can facilitate the rapid detachment and directional transport of bubbles, effectively guiding the bubbles to leave along the preset path, thereby alleviating the adverse effects caused by bubble coverage. Both simulation and experimental results demonstrate that the biomimetic electrode significantly reduces the average bubble size by 47%, enhances bubble detachment frequency, and induces a distinct upward asymmetric bubble distribution on both sides of the electrode. These enhanced bubble management characteristics enable the biomimetic electrode to achieve approximately a 33.4% reduction in hydrogen evolution reaction overpotential at a current density of 100 mA·cm-² relative to the non-structured electrode. The proposed multi-scale collaborative bubble management strategy provides valuable insights into improving mass transfer and reaction kinetics in solid-liquid-gas three-phase electrochemical systems. The findings offer an important reference framework for the design of electrochemical electrodes involving gas evolution.
{"title":"Multi-scale bubble regulation of biomimetic electrodes derived from fish scales and petals for enhanced electrolytic water splitting","authors":"Jiabao Li, Xinwei Zhang, Hongxia Li","doi":"10.1016/j.electacta.2026.148391","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.148391","url":null,"abstract":"The accumulation of bubbles on the electrode surface can block the active catalytic sites, hindering the transmission of ions and electrolytes, thereby limiting the achievable current density. Inspired by fish scales and petals, this study designed a biomimetic electrode with multi-scale bubble management capabilities. By combining topological electrode design with surface modification of nanostructures, this electrode can facilitate the rapid detachment and directional transport of bubbles, effectively guiding the bubbles to leave along the preset path, thereby alleviating the adverse effects caused by bubble coverage. Both simulation and experimental results demonstrate that the biomimetic electrode significantly reduces the average bubble size by 47%, enhances bubble detachment frequency, and induces a distinct upward asymmetric bubble distribution on both sides of the electrode. These enhanced bubble management characteristics enable the biomimetic electrode to achieve approximately a 33.4% reduction in hydrogen evolution reaction overpotential at a current density of 100 mA·cm<sup>-</sup>² relative to the non-structured electrode. The proposed multi-scale collaborative bubble management strategy provides valuable insights into improving mass transfer and reaction kinetics in solid-liquid-gas three-phase electrochemical systems. The findings offer an important reference framework for the design of electrochemical electrodes involving gas evolution.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"159 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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