材料科学
聚氨酯
阳极
羧甲基纤维素
电化学
阴极
泥浆
电极
水溶液
石墨
电池(电)
化学工程
锂(药物)
锂离子电池
集电器
分散剂
热稳定性
复合材料
色散(光学)
冶金
化学
钠
有机化学
功率(物理)
内分泌学
工程类
物理
光学
医学
电解质
量子力学
物理化学
作者
Nicholas Loeffler,Thomas Kopel,Guk‐Tae Kim,Stefano Passerini
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2015-01-01
卷期号:162 (14): A2692-A2698
被引量:52
摘要
In this manuscript the investigation of the heat-curable polyurethane (PU)/carboxymethyl cellulose (CMC) mixture as binder for Li-ion battery electrodes is reported. The experimental results demonstrate the outstanding thermal and electrochemical stability of PU, as well as the good electrochemical performance of cathode (NMC) and anode (graphite) electrodes in which PU is used as binder. The most important finding is the ability of PU to prevent current collector corrosion usually occurring when an aqueous dispersion (slurry) of NMC is coated on aluminum foils. SEM investigation shows that PU encapsulates the positive active material particles preventing a pH raise in the slurry. Finally, the cycling performance of PU/CMC based anodes and cathodes are tested in half as well as full lithium-ion cell setups.
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