【摘 要】
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Nowadays,although Li ion battery technology is sufficient to power small portable devices such as mobile phones and lap-top computers,significant challenges in the specific capacity and rate capabilit
【机 构】
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State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 0
【出 处】
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第31届全国化学与物理电源学术年会
论文部分内容阅读
Nowadays,although Li ion battery technology is sufficient to power small portable devices such as mobile phones and lap-top computers,significant challenges in the specific capacity and rate capability (the energy and power density) must be overcome to expand the applications in electric and hybrid electric vehicles.Olivine structured LiFePO4 is one of the most promising cathode materials for next-generation lithium-ion batteries in applications of large-size and high-power devices[1].Compared with commercial layered LiCoO2 material with lower capacity and poorer safety,it possesses more excellent chemical and thermal stability,acceptable flat voltage plateau (3.4 V vs.Li+/Li) and a high theoretical rate capacity of 170 mAh g-1,and it offers economic and environmental advantages because of its low-cost and nontoxicity.
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