Tailoring Anisotropic Li-Ion Transport Tunnels on Orthogonally Arranged Li-Rich Layered Oxide Nanoplates Toward High-Performance Li-Ion Batteries
| Autor: | Haitao Huang, Wei-Bing Zhang, Ming Xu, Yanqing Lai, Jing Fang, Jie Li, Linfeng Fei, Nian Zhang, Tao Li, Zhian Zhang, Kai Zhang, Wei Lu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Kinetics Oxide Mineralogy Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Ion chemistry.chemical_compound Chemical engineering chemistry Structural stability General Materials Science 0210 nano-technology Anisotropy Faraday efficiency Ion intercalation Ion transporter |
| Zdroj: | Nano Letters. 17:1670-1677 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | 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 hig... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|