【作者】 叶明； 方臻；

【Author】 Ming Ye;Zhen Fang;College of Chemistry and Materials Science,Anhui Normal University;

【机构】 安徽师范大学化学与材料科学学院；

【摘要】 过渡金属氧化物作为锂离子电池负极材料具有比石墨(372mA h/g)高的理论容量,并且价格低廉,储量丰富和环境友好型等优点,Co3O4作为过渡金属氧化物由于其高的高的理论容量(890mA h/g)和稳定的电化学性能被广泛的用于锂离子电池负极材料的研究,但是,由于在充电过程中Co3O4遭受了大的体积变化和随之而来的电极材料的粉碎,导致了大的容量损失和循环性差,在本研究中,利用水热法合成了具有纳米结构的Co3O4材料,提高的材料的导电性和机械性能,从而有效的改善了循环过程中体积变化的问题,提高的材料的电化学性能。更多还原

【Abstract】 Transition metal oxide as lithium-ion batteries anode materials has high theoretical capacity Which compare with graphite(372mA h/g),such as high theoretical specific capacity, low cost, abundance in nature and environmental friendly,As Transition metal oxide,the Co3O4 nanomaterial is one of the most widely studied materials due to is high theoretical capacity(890mA h/g)and stable electrochemical performance,However, upon charge–discharge processes, Co3O4 suffers from large volume expansion/contraction and subsequently electrode pulverization,which may lead to a decrease of its large reversible capacity and a poor cycling performance.In this work, the hydrothermal method was used to synthesis the cobalt oxide,the electronic conductivity and mechanical property was be promoted.Thus, an effective to restrain of the volume changes and the materials eletrochemical property was be improved.更多还原