羧甲基纤维钠在硅基锂离子电池中的应用

Application of sodium carboxymethyl cellulose in lithium ion battery

硅基负极材料的理论比容量远高于目前其他所有的负极材料,但由于自身体积效应导致锂离子电池循环性能降低,从而限制了其实际应用。除了从改性负极材料入手外,粘结剂的选取和改性成了改善硅基负极锂离子电池电化学性能的有效途径之一。水基羧甲基纤维素钠(CMC)是目前在硅基负极锂离子电池中研究较多的一种粘结剂。对羧甲基纤维素钠(CMC)在硅基锂离子电池中的作用机理及主要工作进行了综述。

The theoretical specific capacity of silicon based anode materials is much higher than that of all other anode materials.However,the cycle performance of lithium ion battery is decreased due to its own volume effect,which limits its practical application.In addition to starting from the modified anode material,the selection and modification of the binder has become one of the effective ways to improve the electrochemical performance of the silicon based anode lithium ion battery.Sodium carboxymethyl cellulose(CMC)is a kind of binder which is more studied in the silicon based anode Li ion battery.In this paper,the mechanism of sodium carboxymethyl cellulose(CMC)in the silica based lithium ion batteries and the main work were summarized.