Journal of Electroanalytical Chemistry最新文献

Tuning the solvation structure of zinc ions via urea enables long-cycling alkaline zinc‑manganese flow batteries 通过尿素调节锌离子的溶剂化结构可以实现长周期碱性锌锰液流电池

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-14 DOI: 10.1016/j.jelechem.2025.119335

Lei Guo , Rui Sun , Amir Mahmoud Makin Adam , Senlin Leng , Minghe Qu , Savaş Kaya , Viswanathan S. Saji

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Cathodic process in NaCl-KCl-Al2S3 molten salts NaCl-KCl-Al2S3熔盐的阴极过程

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-12 DOI: 10.1016/j.jelechem.2025.119333

Hongguang Kang, Xianwei Hu, Ruidong Guo, Liang Tian, Qiheng Wang, Hanyang Zhang, Aimin Liu, Zhongning Shi, Zhaowen Wang

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Discharge properties of Mg-Zn-Ca-In alloys as anodes for primary Mg-air batteries Mg-Zn-Ca-In合金作一次镁空气电池阳极的放电性能

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-09 DOI: 10.1016/j.jelechem.2025.119330

Chuantian Zhai , Hongxing Liang , Chenchen Zhao , Chen Xu , YuLin Zhang , Shubo Li , Zhaohui Wang , Wenbo Du

{"title":"Discharge properties of Mg-Zn-Ca-In alloys as anodes for primary Mg-air batteries","authors":"Chuantian Zhai , Hongxing Liang , Chenchen Zhao , Chen Xu , YuLin Zhang , Shubo Li , Zhaohui Wang , Wenbo Du","doi":"10.1016/j.jelechem.2025.119330","DOIUrl":"10.1016/j.jelechem.2025.119330","url":null,"abstract":"<div><div>The synergistic enhancement of voltage and efficiency remains a critical challenge in the development of high-energy-density magnesium–air batteries. In this study, a novel Mg-1Zn-1Ca-1.5In anode was developed, demonstrating superior performance with anodic efficiency of 65.74 %, discharge voltage of 1.38 V, and specific energy density of 1953.01 ± 132.9 mWh g<sup>−1</sup> at 10 mA cm<sup>−2</sup>. To understand the underlying mechanisms, synergistic strategies contributing to the concurrent enhancement of both voltage and efficiency were systematically investigated. The presence of the (Mg, In)<sub>2</sub>Ca phase promotes the primary dissolution and subsequent formation of the discharge products, effectively facilitating the transfer of hydrogen evolution sites from the secondary phase to the α-Mg matrix. Meanwhile, the incorporation of In into the α-Mg matrix significantly suppresses the hydrogen evolution reaction, thereby enhancing anodic efficiency. Additionally, the negative shift of the self-corrosion potential and the formation of a thinner discharge product layer further improve the discharge voltage. This study provides valuable insights into the rational design of magnesium alloy anodes with simultaneously high efficiency and voltage, offering a promising pathway toward the development of next-generation Mg–air batteries.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119330"},"PeriodicalIF":4.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing Al2O3 shell promotes high voltage LiCoO2 cathode for high stable lithium-ion batteries Al2O3外壳的设计促进了高稳定锂离子电池的高电压LiCoO2阴极

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-08 DOI: 10.1016/j.jelechem.2025.119327

Xiangkang Jiang , Zhixing Wang , Yanshuai Hong , Yu Jing , Wenjie Peng , Huajun Guo , Hui Duan , Guochun Yan , Jiexi Wang , Guangchao Li

{"title":"Designing Al2O3 shell promotes high voltage LiCoO2 cathode for high stable lithium-ion batteries","authors":"Xiangkang Jiang , Zhixing Wang , Yanshuai Hong , Yu Jing , Wenjie Peng , Huajun Guo , Hui Duan , Guochun Yan , Jiexi Wang , Guangchao Li","doi":"10.1016/j.jelechem.2025.119327","DOIUrl":"10.1016/j.jelechem.2025.119327","url":null,"abstract":"<div><div>High voltage LiCoO<sub>2</sub> (LCO) evokes much interest of researchers because of the high volumetric energy density and its potential application in consumer electronics market. However, the practical application was impeded by the instable structure and interface side reaction under high voltage. Herein, core-shell structured LCO with Al<sub>2</sub>O<sub>3</sub> shell and homogenous Al doping was prepared and its high voltage performance was systematically evaluated. Benefiting to the core-shell structured design, the LCO sample delivered much improved electrochemical performance whatever room temperature or high temperature over 4.6 V high voltage. Especially, the specific capacity of LCO-2 reached 174.0 mAh g<sup>−1</sup> after 40 cycles even at 4.65 V, delivering a retention of 85.5 %. Besides that, the retention ratio of LCO-2 still maintained at 88.2 % at 45 °C after 50 cycles. As a comparison, the value of LCO-0 was only 71.4 %. When assembled into full cells, the value reached 608 cycles which is nearly 1.65 times higher than the homogenous one under the cut capacity of 80 %, showing a well potential application in commercial high voltage products.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119327"},"PeriodicalIF":4.1,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Spherical NiS decorated on Ti3C2 as cathode materials in Mg - S batteries 在Ti3C2表面装饰球形NiS作为镁硫电池正极材料

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-07 DOI: 10.1016/j.jelechem.2025.119301

Xiaoyan Yan, Jiayin Ge, Wentao Du, Zhunsheng Kou, Xiaohua Zhang, Xinxin Zhao, Jin Guo

{"title":"Spherical NiS decorated on Ti3C2 as cathode materials in Mg - S batteries","authors":"Xiaoyan Yan, Jiayin Ge, Wentao Du, Zhunsheng Kou, Xiaohua Zhang, Xinxin Zhao, Jin Guo","doi":"10.1016/j.jelechem.2025.119301","DOIUrl":"10.1016/j.jelechem.2025.119301","url":null,"abstract":"<div><div>Magnesium‑sulfur batteries are regarded as a highly promising alternative to lithium‑sulfur batteries, offering notable benefits in cost-efficiency and environmental sustainability. The development of high-performance cathode materials is crucial for advancing rechargeable magnesium‑sulfur batteries. In this study, we fabricated Ti<sub>3</sub>C<sub>2</sub>@NiS/S composites as cathode materials using a straightforward hydrothermal method. The integration of Ti<sub>3</sub>C<sub>2</sub> and NiS not only enhances the overall conductivity of the composites but also provides abundant active sites, leading to superior discharge performance and cycling stability. Compared to pure NiS/S, the Ti<sub>3</sub>C<sub>2</sub>@NiS/S-2 composite demonstrates exceptional cycling durability and rate capability, achieving a maximum specific capacity of 1385 mAh g<sup>−1</sup> at 0.1C. After 100 cycles, the capacity retention rate remains at 72.9 %, with a minimal capacity decay rate of approximately 0.0081 % per cycle. Furthermore, the Ti<sub>3</sub>C<sub>2</sub>@NiS/S-2 composite exhibits reversible capacities of 1344, 1199.8, 1076, 904, 674, and 322.5 mAh g<sup>−1</sup> at rates of 0.1, 0.2, 0.5, 1, 2, and 5C, respectively. When the current density is restored to 0.1C, the reversible specific capacity quickly recovers to 1280.7 mAh g<sup>−1</sup>. The outstanding discharge performance of Ti<sub>3</sub>C<sub>2</sub>@NiS/S-2 is attributed to the optimized reversible reaction kinetics and the structural stability of the Ti<sub>3</sub>C<sub>2</sub>@NiS/S catalyst.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119301"},"PeriodicalIF":4.1,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrahigh activity hydrogen evolution electrocatalyst was constructed by electrodeposition Mn doping strategy 采用电沉积Mn掺杂策略构建了超高活性析氢电催化剂

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-05 DOI: 10.1016/j.jelechem.2025.119326

Fengxin Cao , Zhiwei Qi , Yao Jia , Chenyu Zhang , Chenxi Bai , Huachen Sun , Qiaoling Li , Chengcheng Yu

{"title":"Ultrahigh activity hydrogen evolution electrocatalyst was constructed by electrodeposition Mn doping strategy","authors":"Fengxin Cao , Zhiwei Qi , Yao Jia , Chenyu Zhang , Chenxi Bai , Huachen Sun , Qiaoling Li , Chengcheng Yu","doi":"10.1016/j.jelechem.2025.119326","DOIUrl":"10.1016/j.jelechem.2025.119326","url":null,"abstract":"<div><div>The alkaline water cracking electrocatalytic hydrogen evolution process (HER) offers a wide range of applications in the production of clean hydrogen. Carefully designing highly stable and active electrocatalysts from the plenty of elements on Earth is now the main research direction. The Ni-S-Mn/NF catalyst was synthesized in situ on nickel foam (NF). The polycrystalline structure composed of MnS<sub>2,</sub> MnS, NiS and Mn dopants greatly optimizes charge transfer and manipulates the electronic structure. Based on the results, the created Ni-S-Mn/NF material may be employed as a highly active electrocatalyst for hydrogen evolution without the need for a binder. The Ni-S-Mn/NF has a much lower overpotential (41 mV at 10 mA cm<sup>−2</sup>) than undoped and single-phase samples, as well as the majority of documented HER catalysts. In addition, the catalysts display a prominent capacitance (C<sub>dl</sub>) of 124.3 mF cm<sup>−2</sup>, which indicates their excellent electrochemical performance. This discovery provides a feasible strategy for producing highly active and long-lasting HER electrocatalysts based on non-precious metals.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119326"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Searching bioalcohols for more sustainable fuel cells: On the electrochemical oxidation of a glycerol platform molecule on gold 为更可持续的燃料电池寻找生物醇：在金上的甘油平台分子的电化学氧化

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-05 DOI: 10.1016/j.jelechem.2025.119324

Dalila S. Mekazni , Antonio Rodes , Rosa M. Arán-Ais , Alejandro Leal-Duaso , Carlos M. Sánchez-Sánchez , Enrique Herrero

{"title":"Searching bioalcohols for more sustainable fuel cells: On the electrochemical oxidation of a glycerol platform molecule on gold","authors":"Dalila S. Mekazni , Antonio Rodes , Rosa M. Arán-Ais , Alejandro Leal-Duaso , Carlos M. Sánchez-Sánchez , Enrique Herrero","doi":"10.1016/j.jelechem.2025.119324","DOIUrl":"10.1016/j.jelechem.2025.119324","url":null,"abstract":"<div><div>In this work, the electrochemical oxidation of a bio-based platform molecule derived from glycerol, namely glycidol, was investigated on gold electrodes and compared to the electrooxidation of glycerol, since both are C<sub>3</sub>-based alcohols derived from the same renewable biomass source. Cyclic voltammetry, chronoamperometry, and in situ Fourier-transform infrared spectroscopy (FTIR) experiments were performed in alkaline and acidic media at room temperature to analyze reaction mechanisms and products formation. Both glycerol and glycidol exhibited high reactivity in alkaline conditions. Nevertheless, glycerol oxidation on gold electrodes showed higher activity than glycidol, which can be attributed to the highly stable cyclic structure of glycidol and differences in the acidity of their alcohol groups. FTIR analysis and in situ infrared reflection absorption spectroscopy of glycidol electrooxidation revealed the formation of various carboxylate anions and also carbonate, indicating that in some cases the complete cleavage of the C<img>C bond has taken place. These findings provide valuable insights into the electrochemical behavior of glycerol-derived molecules on gold, contributing to the development of more sustainable bio-based fuels.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119324"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electroanalysis of amphetamine-type stimulants at nitrogen-doped carbon nanotube-modified electrodes 安非他明类兴奋剂在氮掺杂碳纳米管修饰电极上的电分析

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-05 DOI: 10.1016/j.jelechem.2025.119323

Breanna Arzola, Michael Bekhit

{"title":"Electroanalysis of amphetamine-type stimulants at nitrogen-doped carbon nanotube-modified electrodes","authors":"Breanna Arzola, Michael Bekhit","doi":"10.1016/j.jelechem.2025.119323","DOIUrl":"10.1016/j.jelechem.2025.119323","url":null,"abstract":"<div><div>This paper reports the utility of nitrogen-doped carbon nanotubes (N-CNT) and a chitosan biopolymer in the development of simple, cheap and rapid electroanalytical method for the detection of two important amphetamine-type stimulants, 3,4-methylenedioxyamphetamine (MDA), and 3,4-methylenedioxymethamphetamine (MDMA). The method used a screen-printed electrode (SPE) modified with the N-CNT/chitosan matrix, and its analytical performance was investigated by square wave voltammetry (SWV). The designed assay was short (<1 min per sample) and allowed the detection of MDA down to 0.22 μ<em>M</em> with a linear range up to 50 μ<em>M</em> (<em>R</em><sup>2</sup> = 0.998) in a pH 10.0 phosphate buffer solution. The limit of detection for MDMA was 1.2 μ<em>M</em> with a linear range up to 150 μ<em>M</em> (<em>R</em><sup>2</sup> = 0.992) in a pH 7.4 phosphate buffer. The spike-and-recovery experiments demonstrated accuracy of the method with good recovery of signal from MDA (93–99 %) and MDMA (82–94 %) in human urine and saliva. The proposed method required simple sensor preparation steps, used microliter-size (50 μL) sample volume and enabled the use of a single electrode for extended period (19 days) while retaining 94–96 % of the initial signal recorded from MDA and MDMA. The use of N-CNT/chitosan matrix for electrode modification offered a rapid method with a sensing platform that can potentially be integrated into portable devices for screening and analysis of the psychoactive stimulants in the biofluids.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119323"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

β-Cyclodextrin-assisted electrochemical exfoliation of graphite for few-layer graphene synthesis β-环糊精辅助石墨电化学剥落制备少层石墨烯

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-04 DOI: 10.1016/j.jelechem.2025.119321

Gloria Alejandra Méndez-Rivera , Luz María Torres-Rodríguez , Carolina Martínez-Sánchez , Antonio Montes-Rojas , Carlos Antonio Llamas-Castro , María de Lourdes Betancourt-Mendiola

{"title":"β-Cyclodextrin-assisted electrochemical exfoliation of graphite for few-layer graphene synthesis","authors":"Gloria Alejandra Méndez-Rivera , Luz María Torres-Rodríguez , Carolina Martínez-Sánchez , Antonio Montes-Rojas , Carlos Antonio Llamas-Castro , María de Lourdes Betancourt-Mendiola","doi":"10.1016/j.jelechem.2025.119321","DOIUrl":"10.1016/j.jelechem.2025.119321","url":null,"abstract":"<div><div>This study demonstrates that the electrochemical intercalation of graphite in the presence of self-aggregates of β-cyclodextrin (SA-βCD) dissolved in 1 mol L<sup>−1</sup> HClO<sub>4</sub> yields high-quality few-layer graphene (FLG). SA-βCD acts as a surfactant, facilitating exfoliation under environmentally safer conditions compared to previously reported methods. Additionally, the intercalation potential is significantly reduced compared to other media, thereby preventing the oxidation of the FLG. In the electrochemical experiments, graphite was incorporated into a carbon paste electrode and subjected to cyclic voltammetry, leading to the formation of a colloidal suspension of FLG and SA-βCD. Fourier-transform infrared spectroscopy, X-ray diffraction, ultraviolet-visible spectroscopy, and Raman spectroscopy analyses confirmed that the electrochemical exfoliation assisted by SA-βCD produced FLG without oxygen functional groups or residual SA-βCD. The electrochemical proprieties were consistent with those of graphene derivatives. Scanning electron microscopy and transmission electron microscopy analyses revealed that the FLG had large lateral dimensions ranging from 2 to 10 μm. The graphene sheets were flat and free of wrinkles, with some edges folded back on themselves or scrolled.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119321"},"PeriodicalIF":4.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revealing the mechanism of grain refinement's effect on the discharge performance of AZ31 magnesium anode under different pulse currents 揭示了不同脉冲电流下晶粒细化对AZ31镁阳极放电性能影响的机理

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-07-04 DOI: 10.1016/j.jelechem.2025.119313

Zhiquan Huang, Yonglin Zheng, Yu Liu, Miaomiao Zhang, Xiangyu Gao, Jinchao Zou

{"title":"Revealing the mechanism of grain refinement's effect on the discharge performance of AZ31 magnesium anode under different pulse currents","authors":"Zhiquan Huang, Yonglin Zheng, Yu Liu, Miaomiao Zhang, Xiangyu Gao, Jinchao Zou","doi":"10.1016/j.jelechem.2025.119313","DOIUrl":"10.1016/j.jelechem.2025.119313","url":null,"abstract":"<div><div>Magnesium-air batteries possess high theoretical energy density, but their anode discharge performance is limited by microstructure. This study investigates the regulatory mechanism of microstructure on discharge performance by controlling effective pulse currents (120–240 A). The results show that the AZ31 magnesium alloy treated by 120 A pulse current exhibits excellent discharge performance at various discharge current densities. The discharge voltages was 1.077 V at current densities of 10 mA·cm<sup>−2</sup>, respectively, with corresponding anode efficiencies of 58.9 %. This is primarily due to the formation of a uniformly distributed fine-grained structure (average grain size of 5.82 μm) compared to other pulse currents. The fine-grained structure provides more grain boundary dissolution channels, and the uniform grain distribution significantly mitigates the “chunk effect”. Although the alloy treated with 120 A pulse current has a relatively high β-Mg<sub>17</sub>Al<sub>12</sub> phase content and a preferred (0001) grain orientation, which are disadvantageous, its uniform fine-grained structure effectively counteracts these adverse effects. This study confirms that grain size is the primary factor in regulating the discharge performance of magnesium anodes, providing a theoretical basis and technical pathway for designing high-performance magnesium-air battery anodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"995 ","pages":"Article 119313"},"PeriodicalIF":4.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0