Citation: Yuming Shu, Hanghang Lei, Jiangnan Huang, Qing Pan, Baichao Zhang, Yixin Xu, Ye Zhou, Guorong Hu, Yanbing Cao, Guoqiang Zou, Wentao Deng, Zhongdong Peng, Hongshuai Hou, Di Chen, Xiaobo Ji. Enabling superior performance in brick-like single-crystal LiMn₂O₄ via BaO flux[J]. Chinese Chemical Letters, ;2025, 36(9): 110345. doi: 10.1016/j.cclet.2024.110345 shu

Enabling superior performance in brick-like single-crystal LiMn₂O₄ via BaO flux

Yuming Shu ^{a, b, c} ,
Hanghang Lei ^b ,
Jiangnan Huang ^a ,
Qing Pan ^a ,
Baichao Zhang ^a ,
Yixin Xu ^b ,
Ye Zhou ^b ,
Guorong Hu ^c ,
Yanbing Cao ^c ,
Guoqiang Zou ^a ,
Wentao Deng ^{a, *,} ,
Zhongdong Peng ^{c, *,} ,
Hongshuai Hou ^{a, *,} ,
Di Chen ^{b, *,} ,
Xiaobo Ji ^a

a.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
b.
The Future Laboratory, Tsinghua University, Beijing 100084, China
c.
College of Metallurgy and Environment, Central South University, Changsha 410083, China

Wentao_Deng@csu.edu.cn

pengzhd@263.net

hou@csu.edu.cn

dichen@tsinghua.edu.cn

Received Date: 15 July 2024
Accepted Date: 16 August 2024
Available Online: 17 August 2024

Figures(5)

Conventional polycrystalline LiMn₂O₄ (PC-LMO) suffers from poor Li⁺ diffusion rates and structural instability, negatively affecting its electrochemical performance. Here, we design a single-crystal LMO cathode material using BaO flux (SC-LMOB) to address these issues. The BaO flux enables the fabrication of brick-like single-crystal particles, enhancing Li⁺ diffusion by shortening the diffusion path and increasing the unit cell volume. This process also reduces the specific surface area and stabilizes the crystal structure, effectively mitigating Mn dissolution and polarization. As a result, SC-LMOB exhibits ultra-high rate performance and superior structural stability, retaining 88.8% of its capacity at a 20 C discharge rate and achieving capacity retentions of 85.3% and 86.0% after 500 and 300 cycles at 1 C at room and elevated temperatures, respectively. This structural design offers a low-cost, scalable approach for fabricating single-crystal cathode materials with excellent performance.
- Single-crystal,
- Flux,
- LiMn₂O₄,
- Stability,
- Lithium-ion battery
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沈阳化工大学材料科学与工程学院沈阳 110142

Enabling superior performance in brick-like single-crystal LiMn2O4 via BaO flux

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通讯作者: 陈斌, bchen63@163.com

Enabling superior performance in brick-like single-crystal LiMn₂O₄ via BaO flux