钙钛矿(结构)
材料科学
电池(电)
阳极
储能
锂(药物)
化学工程
离子
石墨
锂离子电池
电极
热扩散率
纳米技术
化学
复合材料
物理化学
热力学
功率(物理)
有机化学
内分泌学
工程类
物理
医学
作者
Hua Kong,Jiafeng Wu,Ying Han,Yù Zhang,Ning Zhou,Qi Chen,Wentao Sun,Huanping Zhou,Lian‐Mao Peng
标识
DOI:10.1016/j.jechem.2022.04.021
摘要
Perovskite, widely used in solar cells, has also been proven to be potential candidate for effective energy storage material. Recent progress indicates the promise of perovskite for battery applications, however, the specific capacity of the resulting lithium-ion batteries must be further increased. Here, by adjusting the dimensionality of perovskite, we fabricated high-performing one-dimensional hybrid perovskite C4H20N4PbBr6 based lithium-ion batteries, with the first specific capacity as high as 1632.8 mAh g−1 and a stable specific capacity of 598.0 mAh g−1 after 50 cycles under the condition of the constant current density of 150 mA g−1. The stable specific capacity is 2.36 times higher than that of the three-dimensional perovskite CH3NH3PbBr3 (253.2 mAh g−1), and 1.6 times higher than that of the commercialized graphite electrode (372 mAh g−1). The structure difference and the associated ion diffusivity are revealed to substantially affect the specific capacity of the perovskite-based lithium-ion battery. Our study opens up new directions for the applications of hybrid perovskites in energy storage devices.
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