石墨烯
阳极
材料科学
阴极
集电器
锂(药物)
储能
锂离子电池
导电体
光电子学
电流密度
柔性电子器件
纳米技术
离子
电极
电池(电)
复合材料
电解质
电气工程
化学
功率(物理)
有机化学
物理化学
内分泌学
工程类
物理
量子力学
医学
作者
Na Li,Zongping Chen,Wencai Ren,Feng Li,Hui–Ming Cheng
标识
DOI:10.1073/pnas.1210072109
摘要
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 Li(4)Ti(5)O(12) and LiFePO(4), 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 Li(4)Ti(5)O(12)/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.
科研通智能强力驱动
Strongly Powered by AbleSci AI