Journal of Electroanalytical Chemistry最新文献_第5页

First principle studies of oxygen reduction reaction on boron doped X-graphene nanoflakes (X = N, P and S) electrocatalysts 掺硼 X-石墨烯纳米片（X = N、P 和 S）电催化剂氧还原反应的第一原理研究

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-07 DOI: 10.1016/j.jelechem.2024.118778

Ravi Kumar

引用次数: 0

Pomegranate-like cobalt Phosphides@P-Doped carbon Nanostructures with controlled phase as anode materials for Lithium-Ion batteries 作为锂离子电池负极材料的石榴状磷化钴@P-掺杂碳纳米结构的可控相位

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-06 DOI: 10.1016/j.jelechem.2024.118760

Anyu Hu, Qihui Liu, Tao Fang, Yijing Pan, Siyi Huang, Yanpeng Fu, Zhicong Shi

{"title":"Pomegranate-like cobalt Phosphides@P-Doped carbon Nanostructures with controlled phase as anode materials for Lithium-Ion batteries","authors":"Anyu Hu, Qihui Liu, Tao Fang, Yijing Pan, Siyi Huang, Yanpeng Fu, Zhicong Shi","doi":"10.1016/j.jelechem.2024.118760","DOIUrl":"10.1016/j.jelechem.2024.118760","url":null,"abstract":"<div><div>Transition metal phosphides (TMPs) have recently emerged as prominent energy conversion and storage materials owing to their unique physicochemical property. Nevertheless, it’s still a difficult task to obtain phase-control of TMPs owing to multiple energetically favorable stoichiometries. Herein, a phase-controllable cobalt phosphide@C with the pomegranate core–shell structure are successfully realized by employing Co-glycerate as precursors and phytic acid (PA) as P sources, etching and coordination agents. With the presence of six phosphoryl groups and the strong coordination ability, PA allows the self-phosphating of Co atoms and the P-doped carbon shell, as well as the confinement of the obtained nanoparticles Additionally, as an organic acid, PA can etch the Co-glycerate precursors with the formation of hollow structures. With different etching time, metal-rich phosphides Co<sub>2</sub>P@C and monophosphides CoP@C are successfully achieved. When applied as anode materials, CoP@C demonstrates superior lithium storage performance by delivering a prominent reversible capacity up to 1187 mAh/g at 0.1 A/g and shows no capacity loss at 1 A/g after 500 cycles. This work presents a simple protocol to obtain TMPs with tunable metal/phosphorus ratios, phase selectivity and interface engineering, which could be applied in the field of energy storage and electrocatalysis.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118760"},"PeriodicalIF":4.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655328","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

Transition metal-assisted layer-by-layer binder free deposition for high-performance energy storage devices 用于高性能储能设备的过渡金属辅助逐层无粘合剂沉积技术

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-05 DOI: 10.1016/j.jelechem.2024.118766

Muhammad Zahir Iqbal , Ayesha Zakir , Maira Javed , Rashid Ali , Abhinav Kumar , H.H. Hegazy , A.A. Alahmari

{"title":"Transition metal-assisted layer-by-layer binder free deposition for high-performance energy storage devices","authors":"Muhammad Zahir Iqbal , Ayesha Zakir , Maira Javed , Rashid Ali , Abhinav Kumar , H.H. Hegazy , A.A. Alahmari","doi":"10.1016/j.jelechem.2024.118766","DOIUrl":"10.1016/j.jelechem.2024.118766","url":null,"abstract":"<div><div>The increasing energy demands of the world necessitate the development of advanced energy storage systems. Hybrid supercapacitors (HSCs) have emerged as promising candidates, combining the high specific power density (P<sub>S</sub>) of supercapacitors (SCs) with the high specific energy density (E<sub>S</sub>) of batteries (BATs). However, its performance is dependent on the properties of electrode materials, which need enhancements in conductivity, surface area, and electrochemical stability. In this study, we utilized magnetron sputtering technique for exploring the potential of interface engineering to improve the electrochemical performance of tungsten disulfide (WS<sub>2</sub>) as a battery grade electrode material by incorporating chromium (Cr) and titanium (Ti) as an interfacial layer. This strategic modification significantly increased the conductivity, charge transfer efficiency, and structural stability of the WS<sub>2</sub> electrode. Electrochemical experimentation in both half-cell and full-cell configurations revealed that the WS<sub>2</sub>/Cr and WS<sub>2</sub>/Ti electrode exhibits superior C<sub>S</sub> [2400 and 3800] F/g, respectively compared to pristine WS<sub>2</sub>. Fabricated WS<sub>2</sub>/Cr//AC and WS<sub>2</sub>/Ti//AC attained E<sub>S</sub> [95 and 117] Wh/kg and P<sub>S</sub> [6800 and 8500] W/kg, respectively. The outcomes from the electrochemical testing further demonstrated the superior cyclic stability of WS<sub>2</sub>/Cr//AC and WS<sub>2</sub>/Ti//AC with [96.5 and 98.3] % which shows that Cr and Ti as an interfacial layer not only mitigates the limitations of WS<sub>2</sub> but also enables the devices to achieve higher performance metrics, underscoring the critical role of interface engineering in advancing HSCs technologies.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118766"},"PeriodicalIF":4.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655329","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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Oxygen vacancy-rich Nd-doped RuO2 for efficient acid overall water splitting 富氧空位掺杂钕的 RuO2 用于高效酸性整体水分离

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-04 DOI: 10.1016/j.jelechem.2024.118756

Boyan Ai, Guoxiang Wang, Pengchao Liang, Jinxiu Bing, Majie Zhang, Qingwang Min, Xinxin Zhang

{"title":"Oxygen vacancy-rich Nd-doped RuO2 for efficient acid overall water splitting","authors":"Boyan Ai, Guoxiang Wang, Pengchao Liang, Jinxiu Bing, Majie Zhang, Qingwang Min, Xinxin Zhang","doi":"10.1016/j.jelechem.2024.118756","DOIUrl":"10.1016/j.jelechem.2024.118756","url":null,"abstract":"<div><div>The development of highly active and acid-stable Ru-based electrocatalysts is of great significance for water electrolysis but remains a huge challenge due to serious Ru corrosion in an acid medium. Herein, we prepared oxygen vacancy (O<sub>V</sub>)-rich Nd-doped RuO<sub>2</sub> nanocrystals by facile synthesis via hydrothermal and subsequent annealing for efficient overall water splitting. The catalyst exhibits an overpotential of only 200 mV for OER and 44 mv for HER at the current density of 10 mA cm<sup>−2</sup> in 0.5 M H<sub>2</sub>SO<sub>4</sub> electrolyte. Nd-doped RuO<sub>2</sub> only demands a cell voltage of 1.52 V to drive the overall water splitting reaction and displays excellent stability for 100 h. Density functional theory further revealed that the newly constructed Nd-doped RuO<sub>2</sub> sites activate the difficult to react *O intermediates, reducing the adsorption energy of the OER intermediates to effectively minimize the Gibbs free energy (*O to *OOH) of the reaction rate-determining step and regulate the center of the active site d-band. The synergistic effect of aliovalent doping and vacancy engineering contributes to the excellent electrocatalytic performance of Nd-doped RuO<sub>2</sub>. This performance control strategy can pave the way for the development of effective and economically viable catalysts.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118756"},"PeriodicalIF":4.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655779","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 capillary action and gravitational force on resistive pulse sensing with nanopipettes 毛细作用和重力对纳米吸头电阻式脉冲传感的影响

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-02 DOI: 10.1016/j.jelechem.2024.118764

Elisabetta Tognoni , Barbara Adinolfi , Marco Ballestri , Greta Varchi , Mario Pellegrino

{"title":"Effect of capillary action and gravitational force on resistive pulse sensing with nanopipettes","authors":"Elisabetta Tognoni , Barbara Adinolfi , Marco Ballestri , Greta Varchi , Mario Pellegrino","doi":"10.1016/j.jelechem.2024.118764","DOIUrl":"10.1016/j.jelechem.2024.118764","url":null,"abstract":"<div><div>In Resistive Pulse Sensing, nanoparticles dispersed in solution are individually detected and characterized during their translocation through a narrow pore or channel. Electrophoretic force and fluid flow can be precisely adjusted to direct nanoparticles toward the sensing zone. The impact of various factors on nanoparticle translocation dynamics, including solution ionic strength, pH, applied potential difference, and pipette tip geometry, has been extensively investigated. In this work, we focus on the role of pipette filling height, an experimental parameter often overlooked despite its significant impact on the overall pressure gradient and the resulting flow through the pipette tip. We used a solution of NaCl 150 mM plus 0.1 % v/v Triton X-100 at pH 7.2, a pipette with radius of approximately 200 nm and a voltage of ± 200 mV. Our findings reveal that the pipette filling height emerges as the critical factor dictating the translocation direction of negatively charged 160 nm PMMA particles and surpassing the combined effect of electrokinetic forces. Ultimately, our results indicate that considering the pipette filling level could enhance the accurate interpretation of experimental results, offering an additional parameter for fine-tuning nanoparticles dynamics, thus providing a valuable tool to researchers in this field.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118764"},"PeriodicalIF":4.1,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655780","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

High entropy alloys mediated formation of multi-oxide nanoparticles on carbon fiber cloths and their synergistic effects in electrochemical performance 高熵合金介导的碳纤维布上多氧化物纳米粒子的形成及其在电化学性能中的协同效应

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-02 DOI: 10.1016/j.jelechem.2024.118762

Yung-Kai Yang, Ching-Hao Liu, Ping-Chun Chen, Hsin-Jung Tsai, Jien-Wei Yeh, Wen-Kuang Hsu

引用次数: 0

Zn-phosphate conversion coatings developed on high-strength steels at reduced processing temperature 在加工温度降低的情况下在高强度钢上开发磷酸锌转化涂层

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.jelechem.2024.118759

Sheila Silva-Fernández, Belén Díaz, Iria Feijoo, Xosé Ramón Nóvoa, Carmen Pérez

{"title":"Zn-phosphate conversion coatings developed on high-strength steels at reduced processing temperature","authors":"Sheila Silva-Fernández, Belén Díaz, Iria Feijoo, Xosé Ramón Nóvoa, Carmen Pérez","doi":"10.1016/j.jelechem.2024.118759","DOIUrl":"10.1016/j.jelechem.2024.118759","url":null,"abstract":"<div><div>The effect of process time, ultrasonic stirring, and the addition of <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><msubsup><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow><mo>-</mo></msubsup></mrow></math></span> on the morphology and corrosion resistance of phosphate conversion coatings was investigated by Scanning Electron Microscopy and electrochemical tests. The phosphating treatments were performed at 50 °C, lower than traditional processes, and pH 2.9 and 2.4. An enhanced film of bigger mass and reduced corrosion rate was produced when the processing time was extended from 6 to 30 min. at pH 2.9. No important changes were identified in the appearance other than a slight crystal coarsening and Zn enrichment. Both the ultrasonic stirring and the addition of <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><msubsup><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow><mo>-</mo></msubsup></mrow></math></span> (pH 2.9, 6 min.) accelerate the coating formation rate and assist in the formation of more uniform layers with a greater Zn concentration. An important crystal refinement was also obtained in the ultrasound-induced treatment, whereas no relevant changes were found for the corrosion behaviour. The addition of <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><msubsup><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow><mo>-</mo></msubsup></mrow></math></span> in the amount of 10 g/L (pH 2.9, 6 min.) facilitates the formation of a layer with a quality like that found in the longest treatment (30 min.). None of the tested variables provided an effective modification to improve the performance of the conversion layers developed for the baths considered in this study at pH 2.4.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118759"},"PeriodicalIF":4.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-supported FeCo2O4/CoO@CNTs film as cathode material to construct high energy density supercapacitor 以自支撑 FeCo2O4/CoO@CNTs 薄膜为阴极材料构建高能量密度超级电容器

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.jelechem.2024.118758

Lei Yuan , Dongkun Fan , Yuanzhen Liu , Zhaohui Li , Chunming Xu , Na Xin

引用次数: 0

Tracking the electrocatalytic activity of Au@Ag core–shell nanoparticles for nitrite oxidation via single-entity electrochemistry 通过单实体电化学追踪 Au@Ag 核壳纳米粒子氧化亚硝酸盐的电催化活性

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.jelechem.2024.118757

Gowrisankar Aruchamy, Byung-Kwon Kim

{"title":"Tracking the electrocatalytic activity of Au@Ag core–shell nanoparticles for nitrite oxidation via single-entity electrochemistry","authors":"Gowrisankar Aruchamy, Byung-Kwon Kim","doi":"10.1016/j.jelechem.2024.118757","DOIUrl":"10.1016/j.jelechem.2024.118757","url":null,"abstract":"<div><div>Single-entity electrochemistry (SEE) has been extensively utilized for analyzing various substances, elucidating their mechanisms, and predicting particle behavior on electrode surfaces. In this paper, we propose a novel method for analyzing the electrochemical reactions between core–shell nanoparticles (NPs) and nitrite ions at the single-particle level. This method employs single Au@Ag core–shell NPs, nitrite ions (<span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow><mo>-</mo></msubsup></math></span>), and a carbon ultramicroelectrode (C-UME), utilizing the electrochemical oxidation of <span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow><mo>-</mo></msubsup></math></span> ions upon collision with individual core–shell nanoparticles on the C-UME surface. Au@Ag core–shell NPs with different ratios were synthesized to achieve the effective oxidation of <span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow><mo>-</mo></msubsup></math></span> ions, and their electrochemical properties were analyzed. Various parameters, such as applied potential and <span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>2</mn></mrow><mo>-</mo></msubsup></math></span> ion concentration, were adjusted in chronoamperometric experiments to analyze the resulting signals. This study is expected to significantly contribute to the analysis of oxidation/reduction, dispersion, and catalytic properties of various NPs, particularly core–shell NPs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118757"},"PeriodicalIF":4.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572968","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

Electrochemical behaviour of metal ions in ethaline-based solutions: Impact of electrode material 金属离子在乙醛基溶液中的电化学行为：电极材料的影响

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2024-11-01 DOI: 10.1016/j.jelechem.2024.118761

Vadim L. Filippov, Alexander V. Rudnev

{"title":"Electrochemical behaviour of metal ions in ethaline-based solutions: Impact of electrode material","authors":"Vadim L. Filippov, Alexander V. Rudnev","doi":"10.1016/j.jelechem.2024.118761","DOIUrl":"10.1016/j.jelechem.2024.118761","url":null,"abstract":"<div><div>Deep eutectic solvents (DESs) have become increasingly important in material synthesis, particularly in electrodeposition processes. Ethaline – a DES composed of choline chloride and ethylene glycol – stands out due to its low viscosity compared to other DESs which is favourable for the electrodeposition process. Among the key factors influencing electrodeposition, the substrate material can also play a significant role in the electrochemical behaviour of metal ions and resulting deposit morphology at the early stages of film growth. This study investigates the electrochemical behaviour of various metal ions, including Co(II), Fe(II), Ni(II), In(III), Sn(II), Cu(I), and Cu(II), on four selected substrates (Pt, glassy carbon, Au, and Cu) in dried ethaline-based solutions. The research highlights the impact of different working electrode materials on deposition processes and examines the onset potentials for deposit dissolution, providing insights into predicting galvanic replacement reactions in the DES medium. The formation of the complexes of different composition between metal ions and ethaline components leads to the sequence of equilibrium potentials different from aqueous, non-complex electrolyte solutions. As a remarkable example, we demonstrate the occurrence of galvanic replacement reaction between Ni(II) ions and a more noble Sn substrate in ethaline. The findings underscore the importance of considering both the choice of substrate material and the speciation in ethaline-based DESs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118761"},"PeriodicalIF":4.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578416","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