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Xu L, Chen S, Su Y, Shen X, He J, Avdeev M, Kan WH, Zhang B, Fan W, Chen L, Cao D, Lu Y, Wang L, Wang M, Bao L, Zhang L, Li N, Wu F. Novel Low-Strain Layered/Rocksalt Intergrown Cathode for High-Energy Li-Ion Batteries. ACS Appl Mater Interfaces 2023; 15:54559-54567. [PMID: 37972385 DOI: 10.1021/acsami.3c13858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Both layered- and rocksalt-type Li-rich cathode materials are drawing great attention due to their enormous capacity, while the individual phases have their own drawbacks, such as great volume change for the layered phase and low electronic and ionic conductivities for the rocksalt phase. Previously, we have reported the layered/rocksalt intergrown cathodes with nearly zero-strain operation, while the use of precious elements hinders their industrial applications. Herein, low-cost 3d Mn4+ ions are utilized to partially replace the expensive Ru5+ ions, to develop novel ternary Li-rich cathode material Li1+x[RuMnNi]1-xO2. The as-designed Li1.15Ru0.25Mn0.2Ni0.4O2 is revealed to have a layered/rock salt intergrown structure by neutron diffraction and transmission electron microscopy. The as-designed cathode exhibits ultrahigh lithium-ion reversibility, with 0.86 (231.1 mAh g-1) out of a total Li+ inventory of 1.15 (309.1 mAh g-1). The X-ray absorption spectroscopy and resonant inelastic X-ray scattering spectra further demonstrate that the high Li+ storage of the intergrown cathode is enabled by leveraging cationic and anionic redox activities in charge compensation. Surprisingly, in situ X-ray diffraction shows that the intergrown cathode undergoes extremely low-strain structural evolution during the charge-discharge process. Finally, the Mn content in the intergrown cathodes is found to be tunable, providing new insights into the design of advanced cathode materials for high-energy Li-ion batteries.
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Affiliation(s)
- Lifeng Xu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Shi Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yuefeng Su
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Xing Shen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Jizhuang He
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Maxim Avdeev
- Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, New South Wales 2234, Australia
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Wang Hay Kan
- China Spallation Neutron Source, Chinese Academy of Science, Dongguan, Guangdong 523803, China
- Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, PR China
| | - Bin Zhang
- Yibin Libode New Materials Co., Ltd., Yibin, Sichuan 644000, China
| | - Weifeng Fan
- Yibin Libode New Materials Co., Ltd., Yibin, Sichuan 644000, China
| | - Lai Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Duanyun Cao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Yun Lu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Lian Wang
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Meng Wang
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Liying Bao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liang Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Ning Li
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Feng Wu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
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