【摘 要】
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Lithium batteries are very important for clean energy storage due to their high specific energy and good cycle life.Exploring cathode materials with high capacity to bypass the low performance of lith
【机 构】
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Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical
【出 处】
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International Conference on Nanoscience & Technology,China 2
论文部分内容阅读
Lithium batteries are very important for clean energy storage due to their high specific energy and good cycle life.Exploring cathode materials with high capacity to bypass the low performance of lithium-metal-oxide (LMO) cathode materials (e.g.LiCoO2, LiMnO2,Li(Ni1/3Co1/3Mn1/3)O2, and LiFePO4) is a great challenge for lithium batteries.Owing to the multiple-electron-transfer electrochemistry of light element-sulfur, the Li-S battery is with a high theoretical capacity and energy density of 1672 mAh g-1 and 2600 W h kg-1, respectively.However, the insulating nature of S and Li2Sx (x=1 or 2), the low utilization of active phase, and the fast capacity degradation hinder the practical application of S cathode material.Novel electrolyte and advanced cathode materials are urgently anticipated to overcome these technical obstacles.
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