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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

                
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

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