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Sang-Eun Chun 4 Articles
923 Alleviating Mn3+ Dissolution in ZnMn2O4 Cathode for the Extended Cyclability via Particle Size Increase
Zn-ion 배터리용 ZnMn2O4 양극재의 입자 크기 증가를 통한 Mn3+ 용출 완화로 수명 증가
Jae Young Park, Young Mook Choi, Sang-Eun Chun
박재영, 최영묵, 전상은
Korean J. Met. Mater. 2023;61(12):923-932.   Published online 2023 Nov 30
DOI: https://doi.org/10.3365/KJMM.2023.61.12.923

Abstract
ZnMn2O4 (ZMO) cathode possesses a high theoretical capacity of 224 mAh g-1 and high operating voltage (1.9 V vs. Zn2+/Zn) for aqueous Zn–ion batteries. However, the disproportionation reaction of Mn3+ leads to Mn dissolution in the ZMO cathode, deteriorating lifespan. In this study, we attempted to reduce Mn dissolution by..... More

                
911 Exploring Binder and Solvent for Depositing Activated Carbon Electrode on Indium–Tin-Oxide Substrate to Prepare Supercapacitors
슈퍼커패시터 전극 제조시 Indium-Tin-Oxide기판 위 활성탄 증착에 적합한 바인더와 용매 소재
Young Mook Choi, Sang-Eun Chun
최영묵, 전상은
Korean J. Met. Mater. 2021;59(12):911-920.   Published online 2021 Nov 19
DOI: https://doi.org/10.3365/KJMM.2021.59.12.911

Abstract
Supercapacitor electrode slurry is prepared for mass production by mixing activated carbon powder, conductive agent, and binder, which is then deposited on a substrate using the doctor-blade method. Polyvinylidene fluoride (PVDF) and 1-methyl-2-pyrrolidone (NMP) are used as binder and solvent, respectively, to form the electrode slurry on a metal substrate...... More

                   Web of Science 2  Crossref 2
336 Synthesis of Mesoporous Carbon from PVDF and PTFE via Defluorination of 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU)
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU)의 탈불화를 이용한 PVDF와 PTFE로부터 메조포러스 탄소의 합성
In-Sik Son, Beodl Hwang, Sang-Eun Chun
손인식, 황버들, 전상은
Korean J. Met. Mater. 2021;59(5):336-345.   Published online 2021 Apr 6
DOI: https://doi.org/10.3365/KJMM.2021.59.5.336

Abstract
Porous carbon has found commercial applications as a filter material based on the sorption ability of its pores. The pore size and surface properties of the carbon can be varied depending on the type of particles to be filtered. Here, mesoporous carbon was induced through the pyrolysis of polyvinylidene fluoride..... More

                   Web of Science 1  Crossref 1
896 Effect of Electrolyte Anion on Electrochemical Behavior of Nickel Hexacyanoferrate Electrode in Aqueous Sodium-Ion Batteries
수용액 기반 소듐 이온 배터리용 헥사사이아노철산 니켈의 전기화학 거동에 미치는 전해질내 음이온의 영향
Sungjun Park, Sang-Eun Chun
박성준, 전상은
Korean J. Met. Mater. 2020;58(12):896-906.   Published online 2020 Dec 4
DOI: https://doi.org/10.3365/KJMM.2020.58.12.896

Abstract
Nickel hexacyanoferrate (NiHCF) has a three-dimensional open framework structure, excellent long-cycling stability and rate performance as a cathode for aqueous sodium-ion batteries. However, the specific capacity of NiHCF is lower than that of present cathodes for aqueous batteries. A sodium-ion electrolyte was explored to achieve optimum capacity with NiHCF. Powder-type..... More

                   Web of Science 4  Crossref 3
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