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Effects of binder content on manganese dissolution and electrochemical performances of spinel lithium manganese oxide cathodes for lithium ion batteries
- Effects of binder content on manganese dissolution and electrochemical performances of spinel lithium manganese oxide cathodes for lithium ion batteries
- Kim, EY[Kim, Eun-Young]; Lee, BR[Lee, Bo-Ram]; Yun, G[Yun, Giyeong]; Oh, ES[Oh, Eun-Suok]; Lee, H[Lee, Hochun]
- DGIST Authors
- Kim, EY[Kim, Eun-Young]; Lee, H[Lee, Hochun]
- Issue Date
- Current Applied Physics, 15(4), 429-434
- Article Type
- Binder; Binders; Dissolution; Electric Batteries; Electro-Chemical Electrodes; Electrochemical Impedance Measurements; Electrochemical Performance; Electrode Impedance; Electrodes; Elevated Temperature; Fluorine Compounds; Lithium; Lithium-Ion Batteries; Lithium Alloys; Lithium Batteries; Lithium Compounds; Lithium Ion Battery; Loading; Manganese; Manganese Dissolution; Manganese Oxide; Oxides; Passivation Layer; Polyvinylidene Fluoride; Polyvinylidene Fluorides; Spinel Lithium Manganese Oxide; Spinel Lithium Manganese Oxides; X Ray Photoelectron Spectroscopy
- In this study, the effects of the polyvinylidene fluoride (PVdF) binder on the Mn dissolution behavior and electrochemical performances of LiMninf2/infOinf4/inf (LMO) electrodes are investigated. It is found that increasing the PVdF content (3, 5, 7, and 10 wt.%) leads to reduced Mn dissolution, and thus superior cycle performance at elevated temperature (60 °C). This can be ascribed to increased binder coverage on the LMO surface, as evidenced by X-ray photoelectron spectroscopy measurements, which acts a role as a passivation layer for Mn dissolution. The rate capability of the LMO electrode is hardly deteriorated as the PVdF content increases, despite the increasing surface coverage. Electrochemical impedance measurements reveal that the LMO electrode with higher binder loading exhibits lower electrode impedance, which is suggested to be due to enhanced electronic passage through the composite LMO electrode. © 2015 Elsevier B.V.
- Elsevier B.V.
- Related Researcher
Electrochemistry Laboratory for Sustainable Energy(ELSE)
Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학
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- Department of Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles
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