Study on the Synthesis CMCAB Electro Spinning Carbon-Coated LiFePO₄ Anode Materials

Abstract

LiFePO4 was spinning with cellulose derivatives by electrostatic spinning for the first time. Processing conditions were adjusted to the solution concentration of 15%, an applied voltage of 25KV, the quality of mixed solvent with 4:1, and then about 0.1μm nano-fibrous non-woven fabrics can be obtained. FTIR showed that the CMCAB was synthesized successfully. Coulomb efficiency of electrode materials before and after the modification was maintained at about 100%, specific capacity of the battery in 2C of discharge rate, it was the first time that discharge specific capacity had increased from the unmodified 147.6 mAh.g-1 to the modified 160.6 mAh.g-1Superscript text. After 200 weeks' cycle, the capacity loss decreased from 11.38% to 5.11%.

Study on Synthesis, Rheological and Electrospinning Functional Materials of Carboxymethyl Cellulose Lithium (CMC-Li)

“…该类材料已经在静 电纺丝研究方面受到学者的广泛关注, 通过不同的溶剂 体系研究, 主要集中在醋酸纤维素(CA) [31] 、羟丙基纤维 素(HPC) [32] 、 乙基纤维素(EC) [5,33] 等纤维素酯和非离子型 纤维素醚. 我们课题组一直致力于这方面的研究, 还在 纤维素、 羟丙基甲基纤维素(HPMC) [34] 、 硝化纤维素(NC) 以及其衍生物 [35,36] 、乙酸丁酸纤维素(CAB)及其衍生 物 [37] 等取得了较好的效果. 离子型纤维素醚由于它自 身结构和性能的原因, 一直没有找到一种合适的电纺丝 途径而暂时没有被报道.…”