【作者】 黄娅楠； 汪晓峰； 张昊； 陈程成； 王一菁； 焦丽芳； 袁华堂；

【Author】 Yanan Huang;Xiaofeng Wang;Hao Zhang;Chengcheng Chen;Yijing Wang;Lifang Jiao;Huatang Yuan;Institute of New Energy Material Chemistry,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Key Laboratory of Advanced Energy Materials Chemistry (MOE),Nankai University;

【机构】 南开大学新能源材料化学研究所,天津化学化工协同创新中心,先进能源材料教育部重点实验室；

【摘要】 过渡金属氧化物因其高容量密度已经被广泛应用于锂离子电池负极材料的研究中[1,2]。CoO作为最有前途的负极材料之一具有较高的理论容量(715mA h g-1),但是较差的倍率性能影响了它在车载汽车中的应用。在我们的工作中,通过加入少量的硝酸铜作为铜源合成了Cu掺杂的CoO,铜的掺杂不仅降低了原料成本而今提高了材料的倍率性能及使用寿命。作为锂离子电池负极材料,Cu掺杂的CoO电极在1C的电流密度下经过200周充放电循环之后容量高达764 mA h g-1,高于其理论容量。因此,Cu掺杂的CoO材料有望成为一种高性能的锂离子电池负极材料。更多还原

【Abstract】 Transition metal oxides as anode materials for lithium-ion batteries have attracted increasing attention owing to their high energy density.CoO has been considered as one of the most promising anode materials due to its high theoretical capacity(715 mA h g-1).However,the poor rate capability limits its development in the on-board application.In this work,we synthesized Cu-doped CoO composite by employing copper nitrate as Cu sources.The doping of Cu not only reduced the costs but also improved the rate capability and service life.As an anode material,the Cu-doped CoO electrode provided high capacity of 764 mA h g-1 after 200 discharge–charge cycles at 1 C.Therefore,the Cu-doped CoO composite can be deemed to be a potential candidate as an anode material.更多还原