Journal of Electroanalytical Chemistry最新文献

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Hierarchical NiCoFe-LDH@GO nanosheet heterointerfaces for enhanced sustainable hydrogen generation via methanol- and urea-assisted water electrolysis 通过甲醇和尿素辅助水电解增强可持续制氢的层次化NiCoFe-LDH@GO纳米片异质界面
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-24 DOI: 10.1016/j.jelechem.2025.119341
Eun Kyung Lee , Rajathsing Kalusulingam , Jun Ho Shim
{"title":"Hierarchical NiCoFe-LDH@GO nanosheet heterointerfaces for enhanced sustainable hydrogen generation via methanol- and urea-assisted water electrolysis","authors":"Eun Kyung Lee ,&nbsp;Rajathsing Kalusulingam ,&nbsp;Jun Ho Shim","doi":"10.1016/j.jelechem.2025.119341","DOIUrl":"10.1016/j.jelechem.2025.119341","url":null,"abstract":"<div><div>We report a facile hydrothermal synthesis of graphene oxide (GO)-supported trimetallic NiCoFe-layered double hydroxides (LDH), forming a NiCoFe-LDH@GO nanosheet heterostructure. This electrocatalyst features improved reaction kinetics, conductivity, and electron transport, resulting in high activity and stability in diverse electrolytes. The NiCoFe-LDH@GO electrocatalyst demonstrates effective performance in 1.0 M KOH, achieving low overpotentials of 0.138 V for the hydrogen evolution reaction and 0.287 V for the oxygen evolution reaction, along with low operating potentials of 1.372 V for the urea oxidation reaction and 1.354 V for the methanol oxidation reaction (vs. RHE). In full-cell water electrolysis, the NiCoFe-LDH@GO//NiCoFe-LDH@GO system delivers competitive voltages of 1.683 V (conventional), 1.509 V (urea-assisted), and 1.495 V (methanol-assisted). These performances are attributed to the high oxidation states of metal centers, which facilitate electron transfer, leverage the conductive GO support, and offer abundant active sites. The reduced voltages in small-molecule-assisted electrolysis highlight improved energy efficiency and sustainability. This work proposes a cost-effective approach for designing efficient NiCoFe-LDH@GO electrocatalysts and underscores their potential in hydrogen production, value-added chemical generation, and wastewater treatment for cleaner energy solutions.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119341"},"PeriodicalIF":4.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738436","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
Effect of multi-redox reaction on electrochemical performance of cobalt‑nickel‑zinc oxide 多重氧化还原反应对钴镍锌氧化物电化学性能的影响
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-24 DOI: 10.1016/j.jelechem.2025.119343
Rui Huang , Yibing Xie
{"title":"Effect of multi-redox reaction on electrochemical performance of cobalt‑nickel‑zinc oxide","authors":"Rui Huang ,&nbsp;Yibing Xie","doi":"10.1016/j.jelechem.2025.119343","DOIUrl":"10.1016/j.jelechem.2025.119343","url":null,"abstract":"<div><div>The multi-redox reaction strategy is a promising approach to enhance the energy storage performance of supercapacitor (SC) based on transition metal oxides. The expansion of the working voltage window of SC becomes feasible way to improve the energy density by combining the reaction potentials of different transition metals in the electrode materials. The cobalt‑nickel‑zinc oxide CoNiZn-O as a ternary metal oxide exhibits a positive potential shift in the oxidation peak compared to cobalt‑nickel oxides. This shift occurs due to the superposition of oxidation potentials arising from the multi-redox reactions of the ternary transition metals, which contributes to broadening the electrode potential window. In particular, the matching Faradaic reaction on both the positive electrode of CoNiZn-O and the negative electrode of Co<img>O takes place within the same potential range, enabling simultaneous redox reactions and enhancing the overall electrochemical performance of SC. The SC with CoNiZn-O as the positive electrode exhibits a capacitance of 41.79 mF cm<sup>−2</sup> and energy density of 0.0122 mWh cm<sup>−2</sup> at a current density of 1 mA cm<sup>−2</sup>, while covering a wide potential range of up to 1.45 V. The incorporation of zinc into CoNiZn-O is found to significantly impact the electrode material's electrical properties. This decrease in bandgap energy leads to the improved electroactivity during the multi-redox reaction process, further enhancing the energy storage performance of SC. Thus, the integration of multi-redox reactions and the expansion of the electrode potential window through ternary metal oxides provide a promising avenue for the development of high-performance SC.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119343"},"PeriodicalIF":4.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711228","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
Heating and P doping promote NiFe₂O₄ to achieve a faster oxygen evolution reaction pathway 加热和P掺杂促进NiFe₂O₄实现更快的析氧反应途径
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-24 DOI: 10.1016/j.jelechem.2025.119366
Zihang Feng, Zhe Zhang, Xiaoxuan Zhang, Jinsheng Li, Xuefei Lei, Xuanwen Liu
{"title":"Heating and P doping promote NiFe₂O₄ to achieve a faster oxygen evolution reaction pathway","authors":"Zihang Feng,&nbsp;Zhe Zhang,&nbsp;Xiaoxuan Zhang,&nbsp;Jinsheng Li,&nbsp;Xuefei Lei,&nbsp;Xuanwen Liu","doi":"10.1016/j.jelechem.2025.119366","DOIUrl":"10.1016/j.jelechem.2025.119366","url":null,"abstract":"<div><div>The oxygen evolution reaction (OER)is crucial for the development of energy storage technologies such as water splitting for hydrogen production and metal-air batteries; therefore, developing efficient electrocatalysts is key to advancing OER. NiFe₂O₄, as a typical spinel-structured transition metal oxide, features nickel ions Ni<sup>2+</sup> preferentially occupying tetrahedral sites and iron ions Fe<sup>3+</sup> occupying octahedral sites within its crystal lattice. This unique dual-metal site distribution significantly optimizes the adsorption energy of oxygen intermediates through Ni<img>Fe electronic synergy, overcoming the inherent activity limitations of single-metal oxides. Simultaneously, its high electrical conductivity and robust stability in alkaline environments make it an ideal alternative to precious metal catalysts. However, its intrinsic activity remains constrained by the sluggish kinetics of the conventional adsorbate evolution mechanism (AEM) and insufficient exposure of surface active sites. To address this, this study focuses on a breakthrough modification of nickel ferrite NiFe₂O₄: employing a phosphorus doping strategy, the reaction mechanism is successfully transformed from the AEM to the lattice oxygen oxidation mechanism (LOM) during the heating process, with optimization of heating time and temperature parameters. The optimized phosphorus-doped nickel ferrite NFO − P achieves a low overpotential of 229 mV and a Tafel slope of 75.1 mV dec<sup>−1</sup> at a current density of 10 mA cm<sup>−2</sup>—its performance significantly surpasses that of pristine NiFe₂O₄ and approaches the level of precious metal IrO₂. This work concurrently reveals that phosphorus doping overcomes the activity limitations of the traditional AEM pathway by weakening metal‑oxygen bonds and activating lattice oxygen, thereby providing a reference for “AEM → LOM” mechanism regulation in transition metal oxide catalysts.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119366"},"PeriodicalIF":4.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779916","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
Hydrogel-derived N-doped activated carbon from synergistic dual carbon sources for high-energy-storage supercapacitors 协同双碳源水凝胶衍生n掺杂活性炭用于高能量储存超级电容器
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-23 DOI: 10.1016/j.jelechem.2025.119365
Lu Lu , Yiyao Han , Bogui Xue , Buhuan Wang , Xiaoxian Zang , Cheng Cheng , Yunlong Xie , Xiangrong Ye
{"title":"Hydrogel-derived N-doped activated carbon from synergistic dual carbon sources for high-energy-storage supercapacitors","authors":"Lu Lu ,&nbsp;Yiyao Han ,&nbsp;Bogui Xue ,&nbsp;Buhuan Wang ,&nbsp;Xiaoxian Zang ,&nbsp;Cheng Cheng ,&nbsp;Yunlong Xie ,&nbsp;Xiangrong Ye","doi":"10.1016/j.jelechem.2025.119365","DOIUrl":"10.1016/j.jelechem.2025.119365","url":null,"abstract":"<div><div>A novel hydrogel-assisted strategy was developed to fabricate N-doped activated carbon with three dimensional (3D) pores through controlled carbonization and chemical activation of chitosan-sucrose hydrogels crosslinked by glutaraldehyde. By adjusting the sucrose/chitosan ratio, this hydrogel-based approach precisely controlled nitrogen doping, pore architecture, and electrochemical properties. The optimized material (GAC1) exhibited a hierarchical porous structure with a high specific surface area (1927.9 m<sup>2</sup> g<sup>−1</sup>) and nitrogen content (2.14 wt%). When evaluated in symmetric supercapacitors using 1 M tetraethylammonium tetrafluoroborate dissolved in acetonitrile (TEABF<sub>4</sub>/AN) electrolyte, GAC1 demonstrated a specific capacitance of 131.6 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and retained 88.9 % capacitance after 10,000 cycles at 10 A g<sup>−1</sup>. The assembled device achieved a maximum energy density of 32.6 Wh kg<sup>−1</sup> at 668.3 W kg<sup>−1</sup>, surpassing commercial activated carbon (YP-50F). The enhanced performance originated from the synergistic combination of micro-mesoporous networks facilitating rapid ion transport and nitrogen-induced surface modifications optimizing electrolyte interaction. This methodology effectively integrates structural engineering with heteroatom doping in a unified synthesis protocol, demonstrating significant potential for advanced energy storage applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119365"},"PeriodicalIF":4.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695299","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
Unveiling the high efficacy of MoSe2 nanosheet with 1D MnO2 hybrid nanocomposite electrode for asymmetric supercapacitors 揭示了MoSe2纳米片与1D MnO2杂化纳米复合电极在非对称超级电容器中的高效能
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-23 DOI: 10.1016/j.jelechem.2025.119360
R. Kumar , M. Prasanth , R. Thangappan , S. Sambasivam
{"title":"Unveiling the high efficacy of MoSe2 nanosheet with 1D MnO2 hybrid nanocomposite electrode for asymmetric supercapacitors","authors":"R. Kumar ,&nbsp;M. Prasanth ,&nbsp;R. Thangappan ,&nbsp;S. Sambasivam","doi":"10.1016/j.jelechem.2025.119360","DOIUrl":"10.1016/j.jelechem.2025.119360","url":null,"abstract":"<div><div>Transition metal dichalcogenides on two-dimensional platforms have emerged as fascinating electrodes for the next generation of energy storage devices. In this study, novel one-dimensional MnO<sub>2</sub> nanorods are adorned with 2D MoSe<sub>2</sub> fine nanosheets using a simple hydrothermal method. The synergetic composition of 1D MnO<sub>2</sub> and 2D MoSe<sub>2</sub> has enormous active sites and ion transport efficacy, which paves the way for the reaction kinetics and significant electrochemical activities. The MnO<sub>2</sub>/MoSe<sub>2</sub> nanohybrid composite delivers a specific capacitance of 320 Fg<sup>−1</sup> at 1 Ag<sup>−1</sup> with capacity retention of 88 % over 10,000 GCD cycles using 1 M Na<sub>2</sub>SO<sub>4</sub>. Meanwhile, the asymmetric supercapacitor AC//MnO<sub>2</sub>/MoSe<sub>2</sub> exhibits an energy density of 18.99 Wh kg<sup>−1</sup> and a power density of 3240 W kg<sup>−1</sup> in a potential window of 1.8 <em>V</em>. Moreover, the light-emitting diode is lit up by the real-time application of the assembled asymmetric device. The enhanced electrochemical activity of specific capacitance, energy density and cycle durability of MnO<sub>2</sub>/MoSe<sub>2</sub> nanohybrid composite is attributable to the synergistic effects of MnO<sub>2</sub> and MoSe<sub>2</sub>.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119360"},"PeriodicalIF":4.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711230","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
A laser-induced graphene-based bipolar electrode sensor for colorimetric detection of glucose 一种用于葡萄糖比色检测的激光诱导石墨烯双极传感器
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-22 DOI: 10.1016/j.jelechem.2025.119358
Kyu Sik Kim , Eunseung Hwang , Sukjoon Hong , Minjee Seo
{"title":"A laser-induced graphene-based bipolar electrode sensor for colorimetric detection of glucose","authors":"Kyu Sik Kim ,&nbsp;Eunseung Hwang ,&nbsp;Sukjoon Hong ,&nbsp;Minjee Seo","doi":"10.1016/j.jelechem.2025.119358","DOIUrl":"10.1016/j.jelechem.2025.119358","url":null,"abstract":"<div><div>Laser-induced graphene (LIG) has been widely employed as a flexible, highly conductive substrate for wearable electrochemical sensors. Here, we adapt LIG for direct colorimetric sensing by incorporating it into a bipolar-electrode (BPE) architecture. Indium tin oxide nanoparticles deposited on the LIG surface render the oxidation-state-dependent color transition of polyaniline visible to the naked eye. In this configuration, electrochemical signals generated at the BPE detection pole are converted into immediate color shifts at the reporting pole, enabling visual detection of analytes such as hydrogen peroxide and glucose. The BPE design reduces device complexity, and in combination with polydimethylsiloxane (PDMS) microchannels, yields a lightweight, fully flexible sensor ideal for wearable applications. This work expands the scope of LIG towards colorimetric sensing and demonstrates a strategic path towards wearable, point-of-care devices.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119358"},"PeriodicalIF":4.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711229","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
Discharge performance of Al-0.6Mg-0.5Sn-0.1Bi alloy in an aluminum-air battery Al-0.6Mg-0.5Sn-0.1Bi合金在铝-空气电池中的放电性能
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-22 DOI: 10.1016/j.jelechem.2025.119361
Yunqing Tang , Chuanrun Wang , Yanqiao Gao , Jianghong Yu , Pingan Liu
{"title":"Discharge performance of Al-0.6Mg-0.5Sn-0.1Bi alloy in an aluminum-air battery","authors":"Yunqing Tang ,&nbsp;Chuanrun Wang ,&nbsp;Yanqiao Gao ,&nbsp;Jianghong Yu ,&nbsp;Pingan Liu","doi":"10.1016/j.jelechem.2025.119361","DOIUrl":"10.1016/j.jelechem.2025.119361","url":null,"abstract":"<div><div>Aluminum-air batteries exhibit high theoretical energy density, specific capacity and operating voltage. However, their large-scale application is hindered by the spontaneous passivation and self-corrosion of aluminum anode. This study investigates the hydrogen evolution rate and the electrochemical performance of the Al-0.6Mg-0.5Sn-0.1Bi alloy compared to pure Al. Additionally, the discharge behavior of an aluminum-air battery employing this alloy as the anode and the microstructure of the post-discharge anode were analyzed. The results demonstrate that the Al-0.6Mg-0.5Sn-0.1Bi exhibits a 63.7 % lower hydrogen evolution rate than pure Al. Furthermore, the Al-0.6Mg-0.5Sn-0.1Bi alloy shows a 50 % reduction in corrosion current and a negative shift in corrosion potential. The element magnesium (Mg) increases the hydrogen evolution overpotential, thereby inhibiting the parasitic hydrogen evolution reaction, while tin (Sn) and bismuth (Bi) disrupt the dense oxide film, enhancing anode activation. The aluminum-air battery utilizing the Al-0.6Mg-0.5Sn-0.1Bi anode achieves a peak power density of 72.68 mW cm<sup>−2</sup> at 80 mA cm<sup>−2</sup> and an energy density of 3508.63 mWh g<sup>−1</sup> at 20 mA cm<sup>−2</sup>. These findings suggest that the Al-0.6Mg-0.5Sn-0.1Bi alloy is a promising alternative anode material for aluminum-air batteries.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119361"},"PeriodicalIF":4.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703737","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
NiM/β zeolites (M = Co, Cu, and Zn) as bifunctional oxygen electrocatalysts NiM/β沸石(M = Co, Cu和Zn)作为双功能氧电催化剂
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-22 DOI: 10.1016/j.jelechem.2025.119357
Jadranka Milikić , Katarina Rondović , Rastko Vasilić , Vladislav Rac , Ljiljana Damjanović-Vasilić , Dalibor Stanković
{"title":"NiM/β zeolites (M = Co, Cu, and Zn) as bifunctional oxygen electrocatalysts","authors":"Jadranka Milikić ,&nbsp;Katarina Rondović ,&nbsp;Rastko Vasilić ,&nbsp;Vladislav Rac ,&nbsp;Ljiljana Damjanović-Vasilić ,&nbsp;Dalibor Stanković","doi":"10.1016/j.jelechem.2025.119357","DOIUrl":"10.1016/j.jelechem.2025.119357","url":null,"abstract":"<div><div>A series of Ni/β and NiM/ β zeolites (where M =Co, Cu, and Zn) were synthesized by a low-cost aqueous ion exchange procedure from hydrogen form β zeolite (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 38). After calcination and morphological examination, the materials were examined for oxygen evolution (OER) and reduction reaction (ORR) in alkaline media. Namely, all zeolites exhibited good OER and ORR activity. For OER, NiZn/β exhibited the lowest onset potential (E<sub>onset</sub>) of 1.63 V, followed by NiCo/β (1.66 V). Overpotentials at onset (η<sub>onset</sub>) decreased in the order: Ni/β (630 mV) &gt; NiCu/β (610 mV) &gt; NiCo/β (460 mV) &gt; NiZn/β (430 mV). NiCo/β gave the highest OER current density (34.2 mA cm<sup>−</sup><sup>2</sup>), followed by NiZn/β (19.4 mA cm<sup>−</sup><sup>2</sup>), while NiCu/β (3.0 mA cm<sup>−</sup><sup>2</sup>) and Ni/β zeolites (2.1 mA cm<sup>−</sup><sup>2</sup>) gave significantly lower values. These results confirmed that NiCo/β and NiZn/β showed the highest activity for OER. For ORR, NiZn/β and Ni/β displayed the lowest Tafel slopes, indicating favorable kinetics. The half-wave potentials (E<sub>1/2</sub>) of 0.69, 0.68, 0.66, and 0.65 V were observed for Ni/β, NiZn/β, NiCu/β, and NiCo/β, respectively. NiZn/β demonstrated excellent stability and gave a number of exchanged electrons from 3.0 to 3.3, which shows mixed direct and indirect pathways of ORR, while the rest of the NiM/β zeolites predominantly showed indirect pathways of ORR. These results confirmed that NiCo/β exhibits the best activity for OER, while NiZn/β demonstrated similar OER activity to NiCo/β but showed the highest ORR activity.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119357"},"PeriodicalIF":4.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711227","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
Tracking transient processes in nanoelectrochemistry 纳米电化学中的瞬态过程跟踪
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-22 DOI: 10.1016/j.jelechem.2025.119363
Lu-Xuan Wang , Hao-Yang Li , Bin Kang , Jing-Juan Xu
{"title":"Tracking transient processes in nanoelectrochemistry","authors":"Lu-Xuan Wang ,&nbsp;Hao-Yang Li ,&nbsp;Bin Kang ,&nbsp;Jing-Juan Xu","doi":"10.1016/j.jelechem.2025.119363","DOIUrl":"10.1016/j.jelechem.2025.119363","url":null,"abstract":"<div><div>Nanoelectrochemistry refers to the study and control of electrochemical processes at the nanoscale, where unique interfacial and kinetic phenomena emerge. It has driven significant instrumental innovations and demonstrated strong time-resolved capability, achieving temporal resolution down to the sub-millisecond scale. Thanks to the advantages of finite invasiveness, excellent sensitivity, and rapid response, nanoelectrochemical methods have been widely applied to investigate the kinetic features of chemical and biological reactions. This review broadly classifies the commonly used nanoelectrochemistry technologies into two categories: direct electrochemical signal detection at the nanoscale and nanoscale optical-electrochemical analysis. We highlight representative studies demonstrating how coupling nanoelectrodes and integrating optical techniques can enhance temporal resolution. These developments have pushed the capabilities of nanoelectrochemistry from monitoring dynamic processes to capturing ultrafast transient events, providing new insights into electrochemical mechanisms at the nanoscale.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119363"},"PeriodicalIF":4.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713657","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
Fungi-derived Ag nanoparticle-anchored carbon electrode material toward electrochemical supercapacitors 用于电化学超级电容器的真菌衍生银纳米颗粒锚定碳电极材料
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2025-07-22 DOI: 10.1016/j.jelechem.2025.119362
Matheus Julien Ferreira Bazzana , Thiago Carvalho Ribeiro , Mylene Silva Ladislão , Adelir Aparecida Saczk , Eustáquio Souza Dias , Joaquim Paulo da Silva , Tatiana Cardoso e Bufalo
{"title":"Fungi-derived Ag nanoparticle-anchored carbon electrode material toward electrochemical supercapacitors","authors":"Matheus Julien Ferreira Bazzana ,&nbsp;Thiago Carvalho Ribeiro ,&nbsp;Mylene Silva Ladislão ,&nbsp;Adelir Aparecida Saczk ,&nbsp;Eustáquio Souza Dias ,&nbsp;Joaquim Paulo da Silva ,&nbsp;Tatiana Cardoso e Bufalo","doi":"10.1016/j.jelechem.2025.119362","DOIUrl":"10.1016/j.jelechem.2025.119362","url":null,"abstract":"<div><div>This study reports the development of a green and sustainable electrode material for electrochemical supercapacitors by anchoring silver nanoparticles (AgNPs) onto carbon derived from fungal biomass. The AgNPs were biosynthesized intracellularly using two fungal species—<em>Coprinopsis calospora</em> and <em>Penicillium flavigenum</em>—and simultaneously integrated into the biomass, which was subsequently carbonized to yield a porous and conductive material. Structural and morphological analyses confirmed the successful incorporation of AgNPs and the formation of turbostratic carbon. Electrochemical characterization revealed that the electrode based on <em>C. calospora</em>-derived carbon with AgNPs (GCE/CCFDC/AgNP) exhibited a specific capacitance of 208.33 Fg<sup>−1</sup>, representing a 32 % increase compared to the counterpart without nanoparticles. The electrode also demonstrated excellent cycling stability, with 98.68 % capacitance retention after 1000 cycles (5,0 A g<sup>−1</sup>). In contrast, the electrode prepared from <em>P. flavigenum</em> showed higher specific capacitance without AgNPs, suggesting a fungi-dependent electrochemical performance. These findings demonstrate the potential of fungus-derived bionanomaterials for energy storage applications and highlight the relevance of species-specific characteristics in electrode design.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"996 ","pages":"Article 119362"},"PeriodicalIF":4.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695297","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
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