CAJ | 학술논문

在预先原位合成的聚吡咯溶液中通过简单沉淀得到SnO2/聚吡咯负极材料,对材料的结构、形貌进行了表征并对材料的电化学性能进行了研究.发现不同形貌的聚吡咯对负极材料的电化学性能存在一定影响：SnO2负极材料在球状聚吡咯体系中比在管状聚吡咯体系中的电化学性能优越,首次库仑效率提高至77.6%,60次循环后仍剩余600 mA·h/g的可逆比容量.
재예선원위합성적취필각용액중통과간단침정득도SnO2/취필각부겁재료,대재료적결구、형모진행료표정병대재료적전화학성능진행료연구.발현불동형모적취필각대부겁재료적전화학성능존재일정영향：SnO2부겁재료재구상취필각체계중비재관상취필각체계중적전화학성능우월,수차고륜효솔제고지77.6%,60차순배후잉잉여600 mA·h/g적가역비용량.
SnO2/polypyrrole composites as anode material of lithium ion batteries were in-situ prepared by an one-step precipitation in the suspension of the polypyrrole synthesized in advance. It is found that the morpho-logy of polypyrrole has an obvious effect on the electrochemical performance of SnO2/polypyrrole composite anode. The granular polypyrrole(G-PPy) displayed advantages over the tubular polypyrrole. The composite containing G-PPy reached the first coulombic efficiency of 77. 6% and remained a reversible specific capacity higher than 600 mA·h/g after 60 cycles. The good flexibility and adhesion of polypyrrole could make a con-tribution to the enhancement of the electrochemical performance of SnO2 based anode.