法拉第效率
离子
材料科学
插层(化学)
氧化物
结构稳定性
化学工程
纳米技术
阴极
阳极
锂(药物)
化学
电极
无机化学
物理化学
冶金
工程类
医学
内分泌学
结构工程
有机化学
作者
Ming Xu,Linfeng Fei,Weibing Zhang,Tao Li,Wei Lü,Nian Zhang,Yanqing Lai,Zhian Zhang,Jing Fang,Kai Zhang,Jie Li,Haitao Huang
出处
期刊:Nano Letters
[American Chemical Society]
日期:2017-02-24
卷期号:17 (3): 1670-1677
被引量:127
标识
DOI:10.1021/acs.nanolett.6b04951
摘要
High-performance Li-rich layered oxide (LRLO) cathode material is appealing for next-generation Li-ion batteries owing to its high specific capacity (>300 mAh g–1). Despite intense studies in the past decade, the low initial Coulombic efficiency and unsatisfactory cycling stability of LRLO still remain as great challenges for its practical applications. Here, we report a rational design of the orthogonally arranged {010}-oriented LRLO nanoplates with built-in anisotropic Li+ ion transport tunnels. Such a novel structure enables fast Li+ ion intercalation and deintercalation kinetics and enhances structural stability of LRLO. Theoretical calculations and experimental characterizations demonstrate the successful synthesis of target cathode material that delivers an initial discharge capacity as high as 303 mAh g–1 with an initial Coulombic efficiency of 93%. After 200 cycles at 1.0 C rate, an excellent capacity retention of 92% can be attained. Our method reported here opens a door to the development of high-performance Ni—Co—Mn-based cathode materials for high-energy density Li-ion batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI