Journal of electrochemical science and technology最新文献_第8页

Effect of Temperature on the Deterioration of Graphite-Based Negative Electrodes during the Prolonged Cycling of Li-ion Batteries 温度对锂离子电池长时间循环过程中石墨基负极劣化的影响

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-04-14 DOI: 10.33961/jecst.2021.00899

Jin Hyeok Yang, Seong‐Ju Hwang, Seung-Kyu Chun, Ki Jae Kim

{"title":"Effect of Temperature on the Deterioration of Graphite-Based Negative Electrodes during the Prolonged Cycling of Li-ion Batteries","authors":"Jin Hyeok Yang, Seong‐Ju Hwang, Seung-Kyu Chun, Ki Jae Kim","doi":"10.33961/jecst.2021.00899","DOIUrl":"https://doi.org/10.33961/jecst.2021.00899","url":null,"abstract":"In this paper, we report the effects of temperature on the deterioration of graphite-based negative electrodes during the long-term cycling of lithium-ion batteries (LIBs). After cycling 75 Ah pouch-type LIB full cells at temperatures of 45 o C (45-Cell) and 25 o C (25-Cell) until their end of life, we expected to observe changes in the negative electrode according to the temperature. The thickness of the negative electrode of the cell was greater after cycling; that of the electrode of 45-Cell (144 µm) was greater than that of the electrode of 25-Cell (109 µm). Cross-sectional scanning electron microscopy analysis confirmed that by-products caused this increase in the thickness of the negative electrode. The by-products that formed on the surface of the negative electrode during cycling increased the surface resistance and decreased the electrical conductivity. Voltage profiles showed that the negative electrode of 25-Cell exhibited an 84.7% retention of the initial capacity, whereas that of 45-Cell showed only a 70.3% retention. The results of this study are expected to be relevant to future analyses of the deterioration characteristics of the negative electrode and battery deterioration mechanisms, and are also expected to provide basic data for advanced battery design.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45358630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Mitigating Metal-dissolution in a High-voltage 15 wt% Si- Graphite‖Li-rich Layered Oxide Full-Cell Utilizing Fluorinated Dual-Additives 利用氟化双添加剂减轻高压15 wt% Si-石墨‖富锂层状氧化物全电池中的金属溶解

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-02-10 DOI: 10.33961/jecst.2021.01165

Jaeram Kim, Sehyun Kwak, H. Pham, Hyun-Gi Jo, Do-Man Jeon, A-Reum Yang, Seung‐Wan Song

引用次数: 3

Experiment and Electro-Thermo-Chemical Modeling on Rapid Resistive Discharge of Large-Capacity Lithium Ion Battery 大容量锂离子电池快速电阻放电实验及电热化学模型

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-02-10 DOI: 10.33961/jecst.2021.00661

C. Doh, Y. Ha, S. Eom, Ji-hyun Yu, Seon-Hwa Choe, Seog-Whan Kim, Jae-Won Choi

引用次数: 0

Copper Recovery from Printed Circuit Boards Waste Sludge: Multi-step Current Electrolysis and Modeling 从印刷电路板废弃污泥中回收铜：多级电流电解和建模

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-02-07 DOI: 10.33961/jecst.2021.00815

Huyen Nguyen, H. Pham, V. Nguyen, Tung Mai, H. Le, Thuy T. B. Hoang

引用次数: 0

Effect of pH and Concentration on Electrochemical Corrosion Behavior of Aluminum Al-7075 T6 Alloy in NaCl Aqueous Environment pH和浓度对Al-7075 T6铝合金在NaCl水环境中电化学腐蚀行为的影响

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-02-07 DOI: 10.33961/jecst.2020.01214

S. A. Raza, M. R. A. Karim, Tauheed Shehbaz, A. A. Taimoor, R. Ali, Muhammad Imran Khan

{"title":"Effect of pH and Concentration on Electrochemical Corrosion Behavior of Aluminum Al-7075 T6 Alloy in NaCl Aqueous Environment","authors":"S. A. Raza, M. R. A. Karim, Tauheed Shehbaz, A. A. Taimoor, R. Ali, Muhammad Imran Khan","doi":"10.33961/jecst.2020.01214","DOIUrl":"https://doi.org/10.33961/jecst.2020.01214","url":null,"abstract":"In the present study, the corrosion behavior of aluminum Al-7075 tempered (T-6 condition) alloy was evaluated by immersion testing and electrochemical testing in 1.75% and 3.5% NaCl environment at acidic, neutral and basic pH. The data obtained by both immersion tests and electrochemical corrosion tests (potentiodynamic polarization and electrochemical impedance spectroscopy tests) present that the corrosion rate of the alloy specimens is minimum for the pH=7 condition of the solution due to the formation of dense and well adherent thin protective oxide layer. Whereas the solutions with acidic and alkaline pH cause shift in the corrosion behavior of aluminum alloy to more active domains aggravated by the constant flux of acidic and alkaline ions (Cland OH-) in the media which anodically dissolve the Al matrix in comparison to precipitated intermetallic phases (cathodic in nature) formed due to T6 treatment. Consequently, the pitting behavior of the alloy, as observed by cyclic polarization tests, shifts to more active regions when pH of the solutions changes from neutral to alkaline environment due to localized dissolution of the matrix in alkaline environment that ingress by diffusion through the pores in the oxide film. Microscopic analysis also strengthens the results obtained by immersion corrosion testing and electrochemical corrosion testing as the study examines the corrosion behavior of this alloy under a systematic evaluation in marine environment.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2022-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43402449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Electrochemical Properties of Trimethylammonium Tetrafluoroborate in Electrochemical Double-Layer Capacitors 四氟硼酸三甲铵在电化学双层电容器中的电化学性能

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2022-02-07 DOI: 10.33961/jecst.2021.00787

Soo-Man Lee, Kyung-Min Lee, Ketack Kim

引用次数: 0

A New Perspective on the Advanced Microblade Cutting Method for Reliable Adhesion Measurement of Composite Electrodes 新型微刀片切削方法在复合电极粘接测量中的应用

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2021-12-17 DOI: 10.33961/jecst.2021.00976

Jihun Song, D. Shin, Seoungwoo Byun, Youngjoon Roh, Cheol Bak, Juhye Song, Jaecheol Choi, Hongkyung Lee, Tae-Soon Kwon, Young-Gi Lee, Myung-Hyun Ryou, Y. Lee

{"title":"A New Perspective on the Advanced Microblade Cutting Method for Reliable Adhesion Measurement of Composite Electrodes","authors":"Jihun Song, D. Shin, Seoungwoo Byun, Youngjoon Roh, Cheol Bak, Juhye Song, Jaecheol Choi, Hongkyung Lee, Tae-Soon Kwon, Young-Gi Lee, Myung-Hyun Ryou, Y. Lee","doi":"10.33961/jecst.2021.00976","DOIUrl":"https://doi.org/10.33961/jecst.2021.00976","url":null,"abstract":"The microblade cutting method, so-called SAICAS, is widely used to quantify the adhesion of battery composite electrodes at different depths. However, as the electrode thickness or loading increases, the reliability of adhesion values measured by the conventional method is being called into question more frequently. Thus, herein, a few underestimated parameters, such as friction, deformation energy, side-area effect, and actual peeing area, are carefully revisited with ultrathick composite electrodes of 135 µm (6 mAh cm -2 ). Among them, the existence of side areas and the change in actual peeling area are found to have a significant influence on measured horizontal forces. Thus, especially for ultrahigh electrodes, we can devise a new SAICAS measurement standard: 1) the side-area should be precut and 2) the same actual peeling area must be secured for obtaining reliable adhesion at different depths. This guideline will practically help design more robust composite electrodes for high-energy-density batteries.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46693008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Spherical Silicon/CNT/Carbon Composite Wrapped with Graphene as an Anode Material for Lithium-Ion Batteries 石墨烯包裹球形硅/碳纳米管/碳复合材料作为锂离子电池负极材料

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2021-12-17 DOI: 10.33961/jecst.2021.01004

Min-Seon Shin, C. Choi, Min‐Sik Park, Sung-man Lee

引用次数: 0

Corrosion Inhibition Performance of Two Ketene Dithioacetal Derivatives for Stainless Steel in Hydrochloric Acid Solution 两种烯酮二硫缩醛衍生物对不锈钢在盐酸溶液中的缓蚀性能

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2021-12-17 DOI: 10.33961/jecst.2021.00822

S. E. Lemallem, Abdelali Fiala, H. B. Ladouani, H. Allal

{"title":"Corrosion Inhibition Performance of Two Ketene Dithioacetal Derivatives for Stainless Steel in Hydrochloric Acid Solution","authors":"S. E. Lemallem, Abdelali Fiala, H. B. Ladouani, H. Allal","doi":"10.33961/jecst.2021.00822","DOIUrl":"https://doi.org/10.33961/jecst.2021.00822","url":null,"abstract":"The methyl 2-(1,3-dithietan -2- ylidene)-3-oxobutanoate (MDYO) and 2-(1,3-dithietan-2-ylidene) cyclohexane -1,3-dione (DYCD) were synthesized and tested at various concentrations as corrosion inhibitors for 316L stainless steel in 1 M HCl using weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), surface analysis techniques (SEM / EDX and Raman spectroscopy) and Functional Density Theory (DFT) was also used to calculate quantum parameters. The obtained results indicated that the inhibition efficiency of MDYO and DYCD increases with their concentration, and the highest value of corrosion inhibition efficiency was determined in the range of concentrations investigated (0.01 × 10 -3 - 10 -3 M). Polarization curves (Tafel extrapolation) showed that both compounds act as mixed-type inhibitors in 1M HCl solutions. Electrochemical impedance spectra (Nyquist plots) are characterized by a capacitive loop observed at high frequencies, and another small inductive loop near low frequencies. The thermodynamic data of adsorption of the two compounds on the stainless steel surface and the activation energies were determined and then discussed. Analysis of experimental results shows that MDYO and DYCD inhibitors adsorb to the metal surface according to the Langmuir model and the mechanism of adsorption of both inhibitors involves physisorption. SEM-EDX results confirm the existence of an inhibitor protective film on the stainless steel surface. The results derived from theoretical calculations supported the experimental observation.","PeriodicalId":15542,"journal":{"name":"Journal of electrochemical science and technology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45368716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Challenges and Design Strategies for Conversion-Based Anode Materials for Lithium- and Sodium-Ion Batteries 锂离子和钠离子电池用转换基阳极材料面临的挑战和设计策略

IF 3.7 4区工程技术

Journal of electrochemical science and technology Pub Date : 2021-12-17 DOI: 10.33961/jecst.2021.00920

Hyunwoo Kim, Dong Inn Kim, W. Yoon

引用次数: 10