Carboxymethyl chitosan/poly（ethylene oxide） water soluble binder：Challenging application for 5V LiNi0.5Mn1.5O4 cathode

Carboxymethyl chitosan/poly（ethylene oxide）（CCTS/PEO） composite is firstly reported as a water soluble binder for the application of 5V LiNi0.5Mn1.5O4 cathode in Li-ion batteries. Both CCTS and PEO show a high electrochemical oxidation potential of above 5.0 V（vs. Li/Li＋）. The electrochemical perfor...

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Bibliographic Details
Published in:材料科学技术学报：英文版 2017, Vol.33 (8), p.763-767
Main Author: Haoxiang Zhong Jidian Lu Aiqin He Minghao Sun Jiarong He Lingzhi Zhang
Format: Article
Language:English
Subjects:
壳聚糖
复合材料
应用
正极
水溶性粘合剂
水溶性粘结剂
环氧乙烷
电化学性能
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Summary:Carboxymethyl chitosan/poly（ethylene oxide）（CCTS/PEO） composite is firstly reported as a water soluble binder for the application of 5V LiNi0.5Mn1.5O4 cathode in Li-ion batteries. Both CCTS and PEO show a high electrochemical oxidation potential of above 5.0 V（vs. Li/Li＋）. The electrochemical performances of LiNi0.5Mn1.5O4（LNMO） cathodes with CCTS/PEO composite binders of different mass rates are investigated, it is found that LiNi0.5Mn1.5O4 cathode with an optimized CCTS/PEO（85/15, w/w） composite exhibits a slightly better cycling performance than that of polyvinylidene fluoride（PVDF）, retaining 81.4% capacity as compared with 79.8% for PVDF at 0.5C rate after 200 cycles. LNMO with PEO/CCTS（85/15,w/w） exhibited the better rate capability than that of PVDF. These results demonstrate that CCTS/PEO composite can be potentially used as a water-soluble binder for 5 V LNMO cathode.
ISSN:1005-0302
1941-1162