College of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China; Beijing Engineering Technology Research Centre for Cellulose and Its Derivative Materials, Beijing 100081, PR China.
College of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China; Beijing Engineering Technology Research Centre for Cellulose and Its Derivative Materials, Beijing 100081, PR China.
Carbohydr Polym. 2014 Oct 13;111:588-91. doi: 10.1016/j.carbpol.2014.05.027. Epub 2014 May 23.
Novel water-based binder CMC-Li is synthesized using cotton as raw material. The mechanism of the CMC-Li as a binder is reported. Electrochemical properties of batteries cathodes based on commercially available lithium iron phosphate (LiFePO4, LFP) and CMC-Li as a water-soluble binder are investigated. CMC-Li is a novel lithium-ion binder. Compare with conventional poly(vinylidene fluoride) (PVDF) binder, and the battery with CMC-Li as the binder retained 97.8% of initial reversible capacity after 200 cycles at 176 mAh g(-1), which is beyond the theoretical specific capacity of LFP. Constant current charge-discharge test results demonstrate that the LFP electrode using CMC-Li as the binder has the highest rate capability, follow closely by that using PVDF binder. The batteries have good electrochemical property, outstanding pollution-free and excellent stability.
新型水基粘结剂 CMC-Li 是使用棉花作为原料合成的。报告了 CMC-Li 作为粘结剂的作用机制。研究了基于市售磷酸铁锂（LiFePO4，LFP）和 CMC-Li 作为水溶性粘结剂的电池正极的电化学性能。CMC-Li 是一种新型锂离子粘结剂。与传统的聚偏二氟乙烯（PVDF）粘结剂相比，在 176 mAh g(-1)下循环 200 次后，以 CMC-Li 为粘结剂的电池保持了初始可逆容量的 97.8%，超过了 LFP 的理论比容量。恒流充放电测试结果表明，以 CMC-Li 为粘结剂的 LFP 电极具有最高的倍率性能，紧随其后的是使用 PVDF 粘结剂的电极。该电池具有良好的电化学性能，无污染且稳定性优异。
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