CARBON COMPOSITE MATERIALS FOR AIR ELECTRODES OF LITHIUM-AIR BATTERIES

摘要：

Lithium-air batteries with ambient oxygen as a positive reactant are attracting more and more interests for energy storage due to their high energy density. In discharge mode, the positive reaction takes place at the solid-liquid (carbon-electrolyte) reaction boundary producing insoluble Li2O2 solid by combining oxygen and Li+. Generally, a larger two phase boundary can be obtained through increasing the wettability of the carbon to electrolyte, while this may prevent the diffusion of the oxygen in the electrode. In this study, two kinds of carbon materials, KB 600 and Super P, are mixed and used for the preparation of electrodes. With lower wettability in the LiPF6/PC+EC, Super P is used for the formation of oxygen transportation passages as well as the reaction zone in the electrode. With the mixed carbon as electrode materials, a discharge capacity of 1200 mAh/g is achieved, which is higher than that with KB600.

关键词： Lithium oxygen battery lithium air battery cathode carbon

作者: Zhang Yining Zhang Huamin Li Jing Dong Mingquan Wang Meiri

作者单位: Energy Storage Division, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhong Energy Storage Division, Dalian Institute ofChemical Physics, Chinese Academy of Sciences 457 Zhongs

会议类型: 国际会议

会议名称: The 7th International Green Energy Conference & The 1st DNL Conference on Clean Energy(第七届绿色能源国际会议暨第一届DNL洁净能源会议(IGEC)

会议地点: 大连

会议语种:英文

页码: 69

在线出版日期: 2012-05-28（万方平台首次上网日期，不代表论文的发表时间）