关于羧甲基纤维素锂的静电纺丝包覆电极材料和作为锂电池粘结剂的研究  因子3.5分

 

Enhanced High Cyclability for Carbon Nanofiber/ Lithium Iron Phosphate/ Lithium-Ion Cathode by a Novel Lithium-Ion Binder

 

 

Novel cellulose derivative lithium carboxymethyl cellulose (CMC-Li) is synthesized using cotton as raw material. The mechanisms of the CMC-Li modify electrode materials by electrospinning and as a binder are reported. CMC-Li/LiFePO4 composite fiber and CMC-Li nanofibers are successfully obtained by electrospinning. Then, CMC-Li/LFP nano-composite fiber is carbonized under nitrogen at a high-temperature  form carbon nanofiber (CNF), and carbon nanofiber / lithium iron phosphate / Lithium-Ion (CNF/LFP/Li , CLL) composite nanofibers as the cathode material. CMC-Li as a novel water-soluble binder has been investigated. Compared with conventional poly (vinylidene fluoride) (PVDF) binder, the CMC-Li binder significantly improves cycling performance of the LFP cathode 97.5 % of initial reversible capacity after 200 cycles at 175 mAh g-1 has been achieved. Constant current charge-discharge test results demonstrate that the CLL electrode using CMC-Li as the binder has the highest rate capability. Electrochemical impedance spectroscopy (EIS) test results show that the electrode using CMC-Li as the binder has lower charge transfer resistance than the electrodes using PVDF as the binder. This way can increase the contents of Li+, and improving the diffusion efficiency and specific capacity. The batteries show good electrochemical property, outstanding pollution-free, excellent stability.

 

另一篇SCI期刊JMSE 因子1.6

题目是沉淀法制备铕离子掺杂钨酸锶钙纳米粉体

 

研究不同钙锶离子比例对样品发光性能的影响