Pub Date : 2024-02-02DOI: 10.33961/jecst.2023.00934
Hyean-Yeol Park, Sun Hyu Kim, Jeong-Hoon Yu, Ji Eun Kwon, Ji Yang Lim, Si Won Choi, Jong-Sung Yu, Yongju Jung
{"title":"Exploiting Natural Diatom Shells as an Affordable Polar Host for Sulfur in Li-S Batteries","authors":"Hyean-Yeol Park, Sun Hyu Kim, Jeong-Hoon Yu, Ji Eun Kwon, Ji Yang Lim, Si Won Choi, Jong-Sung Yu, Yongju Jung","doi":"10.33961/jecst.2023.00934","DOIUrl":"https://doi.org/10.33961/jecst.2023.00934","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139869855","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}
Pub Date : 2024-02-02DOI: 10.33961/jecst.2023.00934
Hyean-Yeol Park, Sun Hyu Kim, Jeong-Hoon Yu, Ji Eun Kwon, Ji Yang Lim, Si Won Choi, Jong-Sung Yu, Yongju Jung
{"title":"Exploiting Natural Diatom Shells as an Affordable Polar Host for Sulfur in Li-S Batteries","authors":"Hyean-Yeol Park, Sun Hyu Kim, Jeong-Hoon Yu, Ji Eun Kwon, Ji Yang Lim, Si Won Choi, Jong-Sung Yu, Yongju Jung","doi":"10.33961/jecst.2023.00934","DOIUrl":"https://doi.org/10.33961/jecst.2023.00934","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"45 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139809958","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}
Pub Date : 2024-02-02DOI: 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":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139870601","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}
Pub Date : 2024-01-29DOI: 10.33961/jecst.2023.00941
In Gyeom Kim, S. Yoo, J. Kim, Hyun S. Park, So Young Lee, Bo-Geum Seo, Kwan-Young Lee, J. Jang, Hee-Young Park
{"title":"A Review of Strategies to Improve the Stability of Carbonsupported PtNi Octahedral for Cathode Electrocatalysts in Polymer Electrolyte Membrane Fuel Cells","authors":"In Gyeom Kim, S. Yoo, J. Kim, Hyun S. Park, So Young Lee, Bo-Geum Seo, Kwan-Young Lee, J. Jang, Hee-Young Park","doi":"10.33961/jecst.2023.00941","DOIUrl":"https://doi.org/10.33961/jecst.2023.00941","url":null,"abstract":"","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"64 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140486704","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}
Pub Date : 2024-01-12DOI: 10.33961/jecst.2023.00528
Gaurav Kumar Yogesh, R. Yeetsorn, Waritnan Wanchan, Michael Fowler, Kamlesh Yadav, Pankaj Koinkar
Direct alcohol fuel cells (DAFCs) have gained much attention as promising energy conversion devices due to their ability to utilize alcohol as a fuel source. In this regard, Molybdenum-based electrocatalysts (Mo-ECs) have emerged as a sub-stitution for expensive Pt and Ru–based co-catalyst electrode materials in DAFCs, owing to their unique electrochemical properties useful for alcohol oxidation. The catalytic activity of Mo-ECs displays an increase in alcohol oxidation current density by several folds to 1000–2000 mA mg Pt–1 , compared to commercial Pt and PtRu catalysts of 10–100 mA mg Pt–1 . In addition, the methanol oxidation peak and onset potential have been significantly reduced by 100–200 mV and 0.5– 0.6 V, respectively. The performance of Mo-ECs in both acidic and alkaline media has shown the potential to significantly reduce the Pt loading. This review aims to provide a comprehensive overview of the bifunctional mechanism involved in the oxidation of alcohols and factors affecting the electrocatalytic oxidation of alcohol, such as synthesis method, structural properties, and catalytic support materials. Furthermore, the challenges and prospects of Mo-ECs for DAFCs anode materials are discussed. This in-depth review serves as valuable insight toward enhancing the performance and efficiency of DAFC by employing Mo-ECs
{"title":"Molybdenum–Based Electrocatalysts for Direct Alcohol Fuel Cells: A Critical Review","authors":"Gaurav Kumar Yogesh, R. Yeetsorn, Waritnan Wanchan, Michael Fowler, Kamlesh Yadav, Pankaj Koinkar","doi":"10.33961/jecst.2023.00528","DOIUrl":"https://doi.org/10.33961/jecst.2023.00528","url":null,"abstract":"Direct alcohol fuel cells (DAFCs) have gained much attention as promising energy conversion devices due to their ability to utilize alcohol as a fuel source. In this regard, Molybdenum-based electrocatalysts (Mo-ECs) have emerged as a sub-stitution for expensive Pt and Ru–based co-catalyst electrode materials in DAFCs, owing to their unique electrochemical properties useful for alcohol oxidation. The catalytic activity of Mo-ECs displays an increase in alcohol oxidation current density by several folds to 1000–2000 mA mg Pt–1 , compared to commercial Pt and PtRu catalysts of 10–100 mA mg Pt–1 . In addition, the methanol oxidation peak and onset potential have been significantly reduced by 100–200 mV and 0.5– 0.6 V, respectively. The performance of Mo-ECs in both acidic and alkaline media has shown the potential to significantly reduce the Pt loading. This review aims to provide a comprehensive overview of the bifunctional mechanism involved in the oxidation of alcohols and factors affecting the electrocatalytic oxidation of alcohol, such as synthesis method, structural properties, and catalytic support materials. Furthermore, the challenges and prospects of Mo-ECs for DAFCs anode materials are discussed. This in-depth review serves as valuable insight toward enhancing the performance and efficiency of DAFC by employing Mo-ECs","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"50 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531971","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}
Pub Date : 2024-01-10DOI: 10.33961/jecst.2023.00486
Van-Cuong Nguyen, HyunChul Kim
In this study, ZnCo 2 O 4 nanoparticles were synthesized via the coprecipitation method using different annealing temperatures from 200 o C to 800 o C. By varying the treatment temperature, the morphology changed from amorphous to tetragonal, and finally to polygonal particles. As temperature increased, the sizes of the nanoparticles also changed from 5 nm at 200 o C to approximately 500 nm at 800 o C. The fabricated material was used to modify the working electrode of a screen-printed carbon electrode (SPE), which was subsequently used to survey the detection performance of the antibiotic, chloramphenicol (CAP). The electrochemical results revealed that the material exhibits a good response to CAP. Further, the sample that annealed at 600°C displayed the best performance, with a linear range of 1–300 µM, and a limit of detection (LOD) of 0.15 µM. The sensor modified with ZnCo 2 O 4 also exhibited the potential for utilitarian application when the recovery in a real sample was above 97%.
本研究采用共沉淀法合成了 ZnCo 2 O 4 纳米粒子，并使用了从 200 o C 到 800 o C 的不同退火温度。随着温度的升高，纳米颗粒的尺寸也从 200 摄氏度时的 5 纳米变为 800 摄氏度时的约 500 纳米。制备的材料被用于改性丝网印刷碳电极（SPE）的工作电极，随后被用于检测抗生素氯霉素（CAP）的性能。电化学结果表明，该材料对 CAP 具有良好的响应。此外，在 600°C 下退火的样品性能最佳，线性范围为 1-300 µM，检测限 (LOD) 为 0.15 µM。当实际样品中的回收率超过 97% 时，用 ZnCo 2 O 4 修饰的传感器也显示出了实用化的潜力。
{"title":"Spinel Nanoparticles ZnCo2O4 as High Performance Electrocatalyst for Electrochemical Sensing Antibiotic Chloramphenicol","authors":"Van-Cuong Nguyen, HyunChul Kim","doi":"10.33961/jecst.2023.00486","DOIUrl":"https://doi.org/10.33961/jecst.2023.00486","url":null,"abstract":"In this study, ZnCo 2 O 4 nanoparticles were synthesized via the coprecipitation method using different annealing temperatures from 200 o C to 800 o C. By varying the treatment temperature, the morphology changed from amorphous to tetragonal, and finally to polygonal particles. As temperature increased, the sizes of the nanoparticles also changed from 5 nm at 200 o C to approximately 500 nm at 800 o C. The fabricated material was used to modify the working electrode of a screen-printed carbon electrode (SPE), which was subsequently used to survey the detection performance of the antibiotic, chloramphenicol (CAP). The electrochemical results revealed that the material exhibits a good response to CAP. Further, the sample that annealed at 600°C displayed the best performance, with a linear range of 1–300 µM, and a limit of detection (LOD) of 0.15 µM. The sensor modified with ZnCo 2 O 4 also exhibited the potential for utilitarian application when the recovery in a real sample was above 97%.","PeriodicalId":506716,"journal":{"name":"Journal of Electrochemical Science and Technology","volume":"15 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139534309","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}
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