Electrochemistry Communications最新文献_第3页

The effect of voltage on accuracy in electrochemical micromachining under two-tone sinusoidal signal 双音正弦信号下电压对电化学微加工精度的影响

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-17 DOI: 10.1016/j.elecom.2025.108097

Xin Wang, JianChao Xiong, JiPeng Wang, Xi Chen

{"title":"The effect of voltage on accuracy in electrochemical micromachining under two-tone sinusoidal signal","authors":"Xin Wang, JianChao Xiong, JiPeng Wang, Xi Chen","doi":"10.1016/j.elecom.2025.108097","DOIUrl":"10.1016/j.elecom.2025.108097","url":null,"abstract":"<div><div>Electrochemical micromachining (ECMM) is a non-traditional technology in the field of machining, which has excellent machining quality. Ultra short pulse power supply is widely used in electrochemical micro machining, and shortening the pulse width is the only effective strategy to improve machining accuracy. But it is costly, not suitable for practical production, also restricts the development of other signals. To solve this problem, this paper proposes using a two-tone sinusoidal signal instead of ultra short pulses, and establishes a three-dimensional model of electrochemical machining based on finite element method. The influence of input voltage on the surface contour evolution of the anode workpiece is analyzed, and the distribution law of input voltage on the inter electrode electrolyte potential and current density is also analyzed. Theoretical analysis shows that as the amplitude of the input signal voltage in the circuit gradually decreases, the contour formed on the surface of the anode workpiece becomes shallower, and the speed of material decomposition tends to slow down. The experimental results of micro hole processing also showed that with the decrease of input voltage, the processing accuracy significantly improved, reaching the sub-micron level. In addition, when machining microstructures on high-temperature nickel chromium alloys that are difficult to cut, the same level of superior machining accuracy can be achieved.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108097"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145920707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Leaching and sequential electrowinning of cu and Sn from silicon solar modules 从硅太阳能组件中浸出铜和锡的顺序电积

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-02 DOI: 10.1016/j.elecom.2025.108088

R. Adcock , T. Chen , N. Click , M. Tao

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Advancements in lithium-ion battery materials for thermal runaway prevention 防止热失控的锂离子电池材料研究进展

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-19 DOI: 10.1016/j.elecom.2025.108098

Sk. Mohammad Shareef , G. Amba Prasad Rao

{"title":"Advancements in lithium-ion battery materials for thermal runaway prevention","authors":"Sk. Mohammad Shareef , G. Amba Prasad Rao","doi":"10.1016/j.elecom.2025.108098","DOIUrl":"10.1016/j.elecom.2025.108098","url":null,"abstract":"<div><div>Lithium-ion (Li-ion) batteries are highly preferred choice for electric vehicles due to their high energy and power densities, but their performance is highly sensitive to temperature fluctuations from charging–discharging cycles and ambient conditions, which can trigger thermal runaway (TR). Effective thermal management is crucial and involves both external cooling and internal strategies. Advances in electrode materials enhance capacity, rate capability, and operating voltage, allowing more compact, efficient packs while remaining cost-effective. Safety depends on material design, electrolyte stability, and intrinsic resistance to TR. The review details current and developmental work on novel materials for LIBs to mitigate thermal runaway. Li-ion chemistries vary in thermal stability. Commercial 18,650 LiCoO₂ cells typically trigger TR near ∼148 °C, while Ni-rich NCM cells enter TR at 160–170 °C. LiFePO₄ (LFP) pouch and prismatic cells tolerate >200 °C even at high states of charge. TR severity also differs: LFP releases ∼200–400 J g<sup>−1</sup>, whereas Ni-rich NCM releases 800–1500 J g<sup>−1</sup> along with >250 mL g<sup>−1</sup> of gas. This highlights a safety–performance trade-off: LFP provides superior thermal tolerance but lower energy density, whereas Ni-rich cathodes offer higher energy at reduced abuse resistance. Electrolyte composition strongly affects TR. Flame-retardant liquid electrolytes reduce flammability but may lower ionic conductivity. Solid polymer and hybrid electrolytes improve safety by resisting ignition and suppressing dendrites, though interfacial and manufacturing challenges remain. Continued advances in materials, safer electrolytes, and battery-management systems are vital for wider EV adoption and alignment with the UN's Sustainable Development Goals and global clean-energy targets.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108098"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145920955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 “Electrodeposition of p-type Cu2O on n-type TiO2 nanosheet arrays for enhanced photoelectrochemical water splitting” [Electrochem. Commun. 178 (2025) 108009] “在n型TiO2纳米片阵列上电沉积p型Cu2O以增强光电化学水分解”的更正[电化学]。common . 178 (2025) 108009]

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-11-20 DOI: 10.1016/j.elecom.2025.108078

Lin Wang , Hai Yu , YaXin Wang , Chun Miao , QianQian Lei , XinPing Yao , XiaoChen Yao , Xin Wei , JianGuo Lv , Yan Xue , JingWen Zhang , SiWen Zhou , DanDan Qu

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A comment on “On the futility of the Fuoss–Kirkwood relation” 评《论福斯-柯克伍德关系的无用性》

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-18 DOI: 10.1016/j.elecom.2025.108100

Žiga Gradišar , Pavle Boškoski

引用次数: 0

Influence of atomic layer deposition on nickel hydroxide phase transitions in nickel foam 原子层沉积对泡沫镍中氢氧化镍相变的影响

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-03 DOI: 10.1016/j.elecom.2025.108091

Samutr Assavachin , Surat Prempluem , Somlak Ittisanronnachai , Sukritta Janprakhon , Montree Sawangphruk

{"title":"Influence of atomic layer deposition on nickel hydroxide phase transitions in nickel foam","authors":"Samutr Assavachin , Surat Prempluem , Somlak Ittisanronnachai , Sukritta Janprakhon , Montree Sawangphruk","doi":"10.1016/j.elecom.2025.108091","DOIUrl":"10.1016/j.elecom.2025.108091","url":null,"abstract":"<div><div>This study investigates how Al<sub>2</sub>O<sub>3</sub> and V<sub>2</sub>O<sub>5</sub> coatings deposited on nickel foam by atomic layer deposition (ALD) modifies its electrochemical phase evolution in alkaline media. Phase transitions and surface kinetics were characterized using cyclic voltammetry (CV), <em>in situ</em> X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and Tafel analysis. Bare NF exhibits a positive cathodic peak shift for α-Ni(OH)<sub>2</sub> formation over 100 CV cycles attributed to surface activation. NF coated with Al<sub>2</sub>O<sub>3</sub> (NF-A) showed a larger shift (+90 mV) indicating enhanced charge transfer kinetics and reduced energy barrier. In contrast, V<sub>2</sub>O<sub>5</sub>-coated NF (NF-V) showed no shift suggesting a suppressed surface kinetics. These shifts disappear at higher scan rates suggesting a kinetic effect rather than a diffusion-induced behavior. Tafel and EIS measurements show that NF-A has the lowest charge transfer resistance, while NF-V exhibits the largest resistance. <em>In situ</em> XRD provides direct evidence for α-Ni(OH)<sub>2</sub> formation during extended cycling under alkaline conditions. These results demonstrate that different ALD coatings can selectively modulate surface kinetics and phase accessibility of nickel foam which can contribute to the design of nickel-based electrodes for phase-specific electrochemical applications.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108091"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145732953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Prelithiation of silicon thin film anodes using ion implantation for lithium ion batteries 锂离子电池用离子注入法制备硅薄膜阳极预锂化

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-11-29 DOI: 10.1016/j.elecom.2025.108089

Charaf Cherkouk , Marc Ferch , Robert Hahn , Tina Weigel , Thomas Köhler , Christian Ludt , Hartmut Stöcker , Annekatrin Delan , Frans Munnik , Ulrich Kentsch , Christoph Folgner , Thomas Schumann , Viktor Begeza , Yu Cheng , Shengqiang Zhou , Lars Rebohle

{"title":"Prelithiation of silicon thin film anodes using ion implantation for lithium ion batteries","authors":"Charaf Cherkouk , Marc Ferch , Robert Hahn , Tina Weigel , Thomas Köhler , Christian Ludt , Hartmut Stöcker , Annekatrin Delan , Frans Munnik , Ulrich Kentsch , Christoph Folgner , Thomas Schumann , Viktor Begeza , Yu Cheng , Shengqiang Zhou , Lars Rebohle","doi":"10.1016/j.elecom.2025.108089","DOIUrl":"10.1016/j.elecom.2025.108089","url":null,"abstract":"<div><div>Silicon is the most promising anode material for lithium ion batteries (LIBs) because of its high theoretical specific capacity of 3590 mAhg<sup>−1</sup> in the Li<sub>3.73</sub>Si phase at room temperature. However, two important issues such as volume expansion after the lithiation and the growth of a solid electrolyte interface during the cycling on the anodic side hinder the full use of Si as a negative electrode in modern LIBs. Here, we prelithiate the Si thin film on Cu foil using Li<sup>+</sup> ion implantation at room temperature with a fluence of 10<sup>16</sup> ions/ cm<sup>2</sup> and three implantation energies of 1, 2 and 3 keV in order to achieve different depth profiles. The ion implantation enables a high controllability and homogeneity of the Li ion profile in the near surface region of the Si anode. Using both a half and full cell configuration versus lithium nickel cobalt aluminum oxide (NCA) in a liquid electrolyte (1 M LiPF<sub>6</sub>, EC:DMC 1:1 and 2 wt% of FEC), the implanted Si anodes were cycled and compared to Si anodes without implantation. The morphology and the structure of the Si anodes were investigated using scanning electron microscopy (SEM) in combination with elemental analysis by energy-dispersive X-ray spectroscopy (EDX) and x-ray diffraction (XRD). Depth profiles of the implanted Li<sup>+</sup> in the Si anode obtained by elastic recoil detection analysis (ERDA) reveal that the distribution of the implanted Li<sup>+</sup> extends from the surface to a depth of ca. 80 nm (deeper than predicted by simulations), which is caused by the roughness of the Cu foil. The roughness of the Si anode on Cu was analyzed using atomic force microscopy (AFM).</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108089"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145681677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Study on hydrogen evolution performance of Pt-Co/NF composite electrodes with different mass ratios 不同质量比Pt-Co/NF复合电极析氢性能研究

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-12-15 DOI: 10.1016/j.elecom.2025.108096

Qian Yin, Jindong Sun, Jiaci Fan, Jinye Xia, Yue Chen

{"title":"Study on hydrogen evolution performance of Pt-Co/NF composite electrodes with different mass ratios","authors":"Qian Yin, Jindong Sun, Jiaci Fan, Jinye Xia, Yue Chen","doi":"10.1016/j.elecom.2025.108096","DOIUrl":"10.1016/j.elecom.2025.108096","url":null,"abstract":"<div><div>To reduce the cost of platinum electrodes for hydrogen production via water electrolysis, Ni-Pt-Co composite electrodes with trace amounts of Pt and Co deposited on a foam nickel substrate were fabricated using electrochemical deposition techniques, exhibiting varying mass ratios. The prepared NF electrodes, Ni<img>Pt, Ni<img>Co, and Ni-Pt-Co composite electrodes were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD). Electrochemical comparison tests and PEM hydrogen production experiments were conducted on NF electrodes, Ni<img>Pt, Ni<img>Co, and Ni-Pt-Co composite electrodes with varying mass ratios using an electrochemical workstation. In situ hydrogen evolution performance was tested in PEM electrolytic cells, including polarization curves and power consumption analysis for different electrodes, supported by impedance spectroscopy. Results indicate that Pt and Co loading significantly affects hydrogen evolution catalytic activity in composite electrodes. Excessive deposition of either Pt or Co not only fails to enhance performance but may reduce catalytic efficiency. An optimal mass ratio exists among Ni, Pt, and Co. Based on the experimental results, the optimal ratio is 12:0.5:0.5. Compared to the composite electrode with m(Ni):m(Pt) = 12:1, the introduction of Co not only reduces Pt content but also enhances catalytic performance. Therefore, practical applications must prioritize identifying the optimal mass ratio for the supporting metal rather than blindly depositing metals quantitatively. This approach aims to enhance catalytic performance while reducing costs.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108096"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A periodic reactivation strategy with redox mediator towards dead Lithium-free Lithium metal batteries 无锂锂金属电池的氧化还原介质周期性再激活策略

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2026-01-06 DOI: 10.1016/j.elecom.2025.108099

Dan Liu , Zetao Ren , Ziyi Kang , Zhengze Dang , Qianhong Da , Yunbo Zhang , Peizhi Yang

引用次数: 0

Uniform secondary current distribution at disk electrodes under Tafel kinetics enabled by concentric current-shielding rings 在塔菲尔动力学下，同心电流屏蔽环使圆盘电极上的二次电流分布均匀

IF 4.2 3区工程技术

Electrochemistry Communications Pub Date : 2026-01-01 Epub Date: 2025-11-24 DOI: 10.1016/j.elecom.2025.108087

Vaishnavi Sree Jeganathan, Rohan Akolkar

{"title":"Uniform secondary current distribution at disk electrodes under Tafel kinetics enabled by concentric current-shielding rings","authors":"Vaishnavi Sree Jeganathan, Rohan Akolkar","doi":"10.1016/j.elecom.2025.108087","DOIUrl":"10.1016/j.elecom.2025.108087","url":null,"abstract":"<div><div>Non-uniform secondary current distribution at rotating disk electrodes (RDE) is a common problem when using resistive electrolyte media or large applied currents. In a recent publication, we have shown that auxiliary electrodes such as the ring of a rotating ring-disk electrode (RRDE) can help suppress current non-uniformities at the disk enabling reliable electroanalytical measurements. However, this previous work considered linear kinetics where current distribution non-uniformities were moderate. In the present contribution, we consider current distribution non-uniformities encountered under Tafel kinetics. We show, for the case of 2,5-dihydroxy-1,4-benzoquinone (DHBQ) reduction, that optimally chosen ring conditions serve to provide effective shielding at the disk edge rendering the overall disk current distribution to be uniform. Numerical modeling and scaling analysis (using the Wagner number) are presented to aid a user in determining the optimal ring current density for achieving uniform disk current distribution under Tafel kinetics. This approach is especially useful when studying soluble-soluble redox transitions for which, unlike deposit distribution in electrodeposition, the current distribution non-uniformity is not visually apparent.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"182 ","pages":"Article 108087"},"PeriodicalIF":4.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145616378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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