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专家顾问 (文学泰斗)

[资源] 金属所成会明PNAS：具有高充放电速率的柔性石墨烯基锂离子电池

本文为中国科学院金属研究所成会明研究员在美国国家科学院院刊上发表的研究型论文。以磷酸亚铁锂-石墨烯和钛酸锂-石墨烯为电极材料组装了具有高充放电速率的柔性锂离子电池。附件为含有支持材料的正文。

Abstract

There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li4Ti5O12 and LiFePO4, for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li4Ti5O12/graphene foam electrode shows a high rate up to 200 C, equivalent to a full discharge in 18 s. Using them, we demonstrate a thin, lightweight, and flexible full lithium ion battery with a high-rate performance and energy density that can be repeatedly bent to a radius of 5 mm without structural failure and performance loss.
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[ 来自科研家族材料家族 ]

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附件 1 : Flexiblegraphene-basedlithiumionbatterieswithultrafastchargeanddischargerates.pdf

2012-10-24 18:47:14, 1.92 M