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Effect of Ramping Rate on the Durability of Proton Exchange Membrane Water Electrolysis During Dynamic Operation Using Triangular Voltage Cycling 在使用三角电压循环的动态操作过程中，斜率对质子交换膜电解水耐久性的影响
Journal of Electrochemical Science and Technology Pub Date : 2024-02-23 DOI: 10.33961/jecst.2023.00948
Hye Young Jung, Yong Seok Jun, Kwan-Young Lee, Hyun S. Park, Sung Ki Cho, Jong Hyun Jang
{"title":"Effect of Ramping Rate on the Durability of Proton Exchange Membrane Water Electrolysis During Dynamic Operation Using Triangular Voltage Cycling","authors":"Hye Young Jung, Yong Seok Jun, Kwan-Young Lee, Hyun S. Park, Sung Ki Cho, Jong Hyun Jang","doi":"10.33961/jecst.2023.00948","DOIUrl":"https://doi.org/10.33961/jecst.2023.00948","url":null,"abstract":"Proton exchange membrane water electrolysis (PEMWE) is an efficient method for utilizing renewable energy sources such as wind and solar powers to produce green hydrogen. For PEMWE powered by renewable energy sources, its durability is a crucial factor in its performance since irregular and fluctuating characteristics of renewable energy sources, especially for wind power, can deteriorate the stability of PEMWE. Triangular voltage cycle is well able to simulate fluctuating wind power, but its effect on the durability has not been investigated extensively. In this study, the performance degradation of the PEMWE cell operated with the triangular voltage cycling was investigated at different ramping rates. The measured current responses during the cycling gradually decreased for both ramping rates, and I–V curve measurements before and after the cycling confirmed the degradation of the performances of PEMWE. For both measurements, the degradation rate was larger for 300 mV s -1 than 30 mV s -1 , and they were determined as 0.36 and 1.26 mV h −1 (at the current density of 2 A cm −2 ) at the ramping rates of 30 and 300 mV s −1 , respectively. The comparison with other studies on triangular voltage cycling also indicate that an increase in the ramping rate accelerates the deterioration of the PEMWE performance. X-ray photoelectron spectroscopy and transmission electron microscopy results showed that the Ir catalyst was oxidized and did not dissolve during the voltage cycling. This study suggests that the ramping rate of the triangular voltage cycling is an important factor for the evaluation of the durability of PEMWE cells.","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"1 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140436138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atomic Force Microscopy (AFM) Tip based Nanoelectrode with Hydrogel Electrolyte and Application to Single-Nanoriparticle Electrochemistry 基于原子力显微镜 (AFM) 尖端与水凝胶电解质的纳米电极及其在单纳米粒子电化学中的应用
Journal of Electrochemical Science and Technology Pub Date : 2024-02-23 DOI: 10.33961/jecst.2023.01004
Kyungsoon Park, Thanh Duc Dinh, Seongpil Hwang
{"title":"Atomic Force Microscopy (AFM) Tip based Nanoelectrode with Hydrogel Electrolyte and Application to Single-Nanoriparticle Electrochemistry","authors":"Kyungsoon Park, Thanh Duc Dinh, Seongpil Hwang","doi":"10.33961/jecst.2023.01004","DOIUrl":"https://doi.org/10.33961/jecst.2023.01004","url":null,"abstract":"An unconventional fabrication technique of nanoelectrode was developed using atomic force microscopy (AFM) and hydrogel. Until now, the precise control of electroactive area down to a few nm 2 has always been an obstacle, which limits the wide application of nanoelectrodes. Here, the nanometer-sized contact between the boron-doped diamond (BDD) as conductive AFM tip and the agarose hydrogel as solid electrolyte was well governed by the feedback amplitude of oscillation in the non-contact mode of AFM. Consequently, this low-cost and feasible approach gives rise to new possibilities for the fabrication of nanoelectrodes. The electroactive area controlled by the set point of AFM was investigated by cyclic voltammetry (CV) of the ferrocenmethanol (FcMeOH) combined with quasi-solid agarose hydrogel as an electrolyte. Single copper (Cu) nanoparticle was deposited at the apex of the AFM tip using this platform whose electrocatalytic activity for nitrate reduction was then investigated by CV and Field Emission-Scanning Electron Microscopy (FE-SEM), respectively.","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"21 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140437694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low temperature interface modification: Electrochemical dissolution mechanism of typical iron and nickel base alloys 低温界面改性：典型铁和镍基合金的电化学溶解机制
Journal of Electrochemical Science and Technology Pub Date : 2024-02-23 DOI: 10.33961/jecst.2023.00745
Jiangwei Lu, Zhengyang Xu, Tianyu Geng
{"title":"Low temperature interface modification: Electrochemical dissolution mechanism of typical iron and nickel base alloys","authors":"Jiangwei Lu, Zhengyang Xu, Tianyu Geng","doi":"10.33961/jecst.2023.00745","DOIUrl":"https://doi.org/10.33961/jecst.2023.00745","url":null,"abstract":": Due to its unique advantages, electrochemical machining (ECM) is playing an increasingly significant role in the manufacture of difficult-to-machine materials. Most of the current ECM research is conducted at room temperature","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"9 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlations between the Impedance and Compressive Strength of Hardened Cement According to the Aggregate Type 根据骨料类型确定硬化水泥的阻抗和抗压强度之间的相关性
Journal of Electrochemical Science and Technology Pub Date : 2024-02-23 DOI: 10.33961/jecst.2023.00773
Hojin Kim, Jinju Kim, Sungyu Park, Je Hyun Bae
{"title":"Correlations between the Impedance and Compressive Strength of Hardened Cement According to the Aggregate Type","authors":"Hojin Kim, Jinju Kim, Sungyu Park, Je Hyun Bae","doi":"10.33961/jecst.2023.00773","DOIUrl":"https://doi.org/10.33961/jecst.2023.00773","url":null,"abstract":": To date, methods used to assess the interfacial transition zone (ITZ), which represents the boundary between the aggregate and paste inside concretes, have primarily relied on destructive tests, and non-destructive tests has received little attention until recently. This study assessed the interfaces of concretes with lightweight aggregates based on electrochemical impedance spectroscopy (EIS) for high-strength concretes and examined the possibility of estimating the compressive strength of concretes through non-destructive testing using EIS. The experimental results revealed that the impedance of the hardened cement increased with increasing compressive strength and aggregate density. In particular, when the results of impedance measurement were displayed as a Nyquist plot, the intercept of the x-axis depicting the effective conductivity was proportional to the compressive strength. Furthermore, an equivalent circuit was selected to interpret the correlation between cement aggregates and impedance. Consequently, the compressive strength was found to increase with the value of the resistances of the electrolyte filled in continuous pores in the cement aggregate. And, the pores formed in the ITZ affect this value. The resistance at the ITZ for different aggregates was also obtained, and it was found that the resistance was consistent with the results predicted by SEM images of the ITZ and correlated with the strength of the concretes. The proposed method can be used as a way to easily determine the strength of cement according to differences in aggregate.","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical Degradation of Textile Effluent Using PbO2 Electrode in Tube Electrolyzer 在管式电解槽中使用 PbO2 电极电化学降解纺织污水
Journal of Electrochemical Science and Technology Pub Date : 2024-02-14 DOI: 10.33961/jecst.2023.00731
Chao Wang, Yongqiang Li, Junmin Wan, Yi Hu, Yi Huang
{"title":"Electrochemical Degradation of Textile Effluent Using PbO2 Electrode in Tube Electrolyzer","authors":"Chao Wang, Yongqiang Li, Junmin Wan, Yi Hu, Yi Huang","doi":"10.33961/jecst.2023.00731","DOIUrl":"https://doi.org/10.33961/jecst.2023.00731","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"9 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical Degradation of Textile Effluent Using PbO2 Electrode in Tube Electrolyzer 在管式电解槽中使用 PbO2 电极电化学降解纺织污水
Journal of Electrochemical Science and Technology Pub Date : 2024-02-14 DOI: 10.33961/jecst.2023.00731
Chao Wang, Yongqiang Li, Junmin Wan, Yi Hu, Yi Huang
{"title":"Electrochemical Degradation of Textile Effluent Using PbO2 Electrode in Tube Electrolyzer","authors":"Chao Wang, Yongqiang Li, Junmin Wan, Yi Hu, Yi Huang","doi":"10.33961/jecst.2023.00731","DOIUrl":"https://doi.org/10.33961/jecst.2023.00731","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"778 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study on long-term cycling performance by external pressure change for pouch-type lithium metal batteries 袋装金属锂电池通过外部压力变化实现长期循环性能的研究
Journal of Electrochemical Science and Technology Pub Date : 2024-02-13 DOI: 10.33961/jecst.2024.00038
Seong-Ju Sim, Bong-Soo Jin, Jun-Ho Park, Hyun-Soo Kim
{"title":"A study on long-term cycling performance by external pressure change for pouch-type lithium metal batteries","authors":"Seong-Ju Sim, Bong-Soo Jin, Jun-Ho Park, Hyun-Soo Kim","doi":"10.33961/jecst.2024.00038","DOIUrl":"https://doi.org/10.33961/jecst.2024.00038","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"29 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of the ratio of C45 carbon to graphene on the Si/C composite materials used as anode for lithium-ion batteries C45 碳与石墨烯的比例对用作锂离子电池负极的 Si/C 复合材料的影响
Journal of Electrochemical Science and Technology Pub Date : 2024-02-06 DOI: 10.33961/jecst.2023.00927
Hoang Anh Nguyen, Thi Nam Pham, L. Huynh, Tran Ha Trang Nguyen, Viet Hai Le, Nguyen Thai Hoang, Thi Thom Nguyen, Thi Thu Huyen Nguyen, Dai Lam Tran, Thi Mai Thanh Dinh
{"title":"The effect of the ratio of C45 carbon to graphene on the Si/C composite materials used as anode for lithium-ion batteries","authors":"Hoang Anh Nguyen, Thi Nam Pham, L. Huynh, Tran Ha Trang Nguyen, Viet Hai Le, Nguyen Thai Hoang, Thi Thom Nguyen, Thi Thu Huyen Nguyen, Dai Lam Tran, Thi Mai Thanh Dinh","doi":"10.33961/jecst.2023.00927","DOIUrl":"https://doi.org/10.33961/jecst.2023.00927","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"14 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139860629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of the ratio of C45 carbon to graphene on the Si/C composite materials used as anode for lithium-ion batteries C45 碳与石墨烯的比例对用作锂离子电池负极的 Si/C 复合材料的影响
Journal of Electrochemical Science and Technology Pub Date : 2024-02-06 DOI: 10.33961/jecst.2023.00927
Hoang Anh Nguyen, Thi Nam Pham, L. Huynh, Tran Ha Trang Nguyen, Viet Hai Le, Nguyen Thai Hoang, Thi Thom Nguyen, Thi Thu Huyen Nguyen, Dai Lam Tran, Thi Mai Thanh Dinh
{"title":"The effect of the ratio of C45 carbon to graphene on the Si/C composite materials used as anode for lithium-ion batteries","authors":"Hoang Anh Nguyen, Thi Nam Pham, L. Huynh, Tran Ha Trang Nguyen, Viet Hai Le, Nguyen Thai Hoang, Thi Thom Nguyen, Thi Thu Huyen Nguyen, Dai Lam Tran, Thi Mai Thanh Dinh","doi":"10.33961/jecst.2023.00927","DOIUrl":"https://doi.org/10.33961/jecst.2023.00927","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"134 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139800835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Introducing an Efficient and Eco-Friendly Spray-Drying Process for the Synthesis of NCM Precursor for Lithium-ion Batteries 采用高效、环保的喷雾干燥工艺合成用于锂离子电池的 NCM 前驱体
Journal of Electrochemical Science and Technology Pub Date : 2024-02-02 DOI: 10.33961/jecst.2023.00752
Hyeong-Jin Park, Seong-Ju Sim, Bong-Soo Jin, Hyun-Soo Kim
{"title":"Introducing an Efficient and Eco-Friendly Spray-Drying Process for the Synthesis of NCM Precursor for Lithium-ion Batteries","authors":"Hyeong-Jin Park, Seong-Ju Sim, Bong-Soo Jin, Hyun-Soo Kim","doi":"10.33961/jecst.2023.00752","DOIUrl":"https://doi.org/10.33961/jecst.2023.00752","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"61 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139810830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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