纤维素科学与技术2024，Vol.32Issue(2)：59-64,6.DOI:10.16561/j.cnki.xws.2024.02.06
壳聚糖基自交联粘结剂的合成及其在硅碳负极中的研究
Synthesis of a Self-Crosslinking Binder Based on Chitosan and Its Electrochemical Performance in a Silicon-Carbon Anode
摘要
Abstract
Chitosan was used as the starting material and its water solubility was significantly enhanced by carboxymethylation.Subsequently,LiOH was introduced for pre-lithiation,and bisacetone acrylamide(DAAM)and acetate dihydrazide(ADH)were added to successfully prepare the binder CDD-Li+ with excellent self-crosslinking properties.In order to explore the structural properties of this binder,Fourier transform infrared spectroscopy(FT-IR)technique was used for characterization.In terms of adhesion,the strong adhesion ability of CDD-Li+ was verified by 180º stripping experiments.The cyclic voltammetry curves of the batteries were tested using an electrochemical workstation,and the results showed that the batteries prepared with the CDD-Li+ binder were able to undergo highly efficient electrochemical reactions and exhibited excellent electrochemical performance.Compared with the PAA binder,the CDD-Li+ binder has a better performance in electrochemical performance.Using the blue battery tester,we further investigated the multiplication performance,cycling performance,and lithium ion diffusion coefficient of the battery,and calculated the initial coulombic efficiency of the battery.The results show that the batteries prepared with CDD-Li+ binder not only have better multiplication and cycling performance,but also have an average Li-ion diffusion coefficient as high as 10-10 orders of magnitude and a ICE as high as 95％.Compared with PAA binder,CDD-Li+ binder shows better performance in silicon carbon anode.关键词
硅碳负极/壳聚糖/预锂化/自交联/水溶性粘结剂Key words
Silicon/Graphite anode/Chitosan/pre-lithiated/self-crosslinking/water soluble binder分类
化学化工引用本文复制引用
李智琪,付玉林,石元昊,桂雪峰,许凯..壳聚糖基自交联粘结剂的合成及其在硅碳负极中的研究[J].纤维素科学与技术,2024,32(2):59-64,6.基金项目
中国科学院科技服务网络计划(No.20211600200052). （No.20211600200052）
