Effect of overcharge on Li(Ni0.5Mn0.3Co0.2)O2/Graphite cells-effect of binder

JOURNAL OF POWER SOURCES

卷:448

Article

Rago, Nancy Dietz¹  Graczyk, Donald G.²  Tsai, Yifen²  Naik, Seema R.²  Li, Jianlin³  Du, Zhijia³  Wood, David L., III³  Steele, Leigh Anna⁴  Lamb, Joshua⁴  Spangler, Scott⁴  Grosso, Christopher⁴  Fenton, Kyle⁴  Bloom, Ira¹ 

[1] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA

[2] Argonne Natl Lab, Chem & Fuel Cycle Technol Div, Analyt Chem Lab, Lemont, IL 60439 USA

[3] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA

[4] Sandia Natl Labs, Power Sources Technol Grp, Albuquerque, NM 87185 USA

关键词: Lithium-ion battery;    Overcharge;    Microstructure;    SEI;    Anode;    Binder;   

DOI  :  10.1016/j.jpowsour.2019.227414

来源: Elsevier

【 摘 要 】

Cells based on NMC/graphite, containing styrene-butadiene rubber/carboxymethylcellulose binder in the anodes and pVdF latex/carboxymethykellulose in the cathodes, were systematically overcharged to 100, 120, 140, 160, 180, 250% and 270% state-of-charge. The impact of the binder was characterized by elemental analysis, SEM, and HPLC. These results were compared to similar cells just using the poly (vinylidene difluoride) binder. Not only did the binder impact the rate of transition metal transport from the cathode to the anode, it also had a marked effect on the microstructure and composition of the materials on the anode surface.

【 授权许可】

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