Citation: Doudou Bao, Jinwei Zhou, Ayaz, Li Wang, Xiangming He, Ziang Jiang, Feixiang Wu. Enhancing cycling stability of high-nickel cobalt-free LiNiO₂ through La/Al synergistic modification: A one-step synthesis approach[J]. Chinese Chemical Letters, ;2026, 37(11): 111774. doi: 10.1016/j.cclet.2025.111774 shu

Enhancing cycling stability of high-nickel cobalt-free LiNiO₂ through La/Al synergistic modification: A one-step synthesis approach

Doudou Bao ^{a, b} ,
Jinwei Zhou ^{a, *,} ,
Ayaz ^a ,
Li Wang ^b ,
Xiangming He ^b ,
Ziang Jiang ^a ,
Feixiang Wu ^{a, *,}

a.
School of Metallurgy and Environment, National Energy Metal Resources and New Materials Key Laboratory, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
b.
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

jwzhou@csu.edu.cn

feixiang.wu@csu.edu.cn

Received Date: 10 June 2025
Revised Date: 16 August 2025
Accepted Date: 29 August 2025
Available Online: 29 August 2025

Figures(5)

Due to the high cost and environmental concerns related to the use of cobalt in conventional layered cathode materials based on transition metals, such as NCM, high-nickel and cobalt-free layered oxides have emerged as promising candidates for lithium-ion batteries, offering potentially higher capacities and lower costs. However, the transition to these materials is not without its hurdles, as they typically exhibit poor cycling stability. In light of this, LiNiO₂ (LNO), which serves as a prototype for high-nickel and cobalt-free materials, has been the subject of this investigation. Hereby, we have developed a one-step synthesis method for an Al-doped and La₄NiLiO₈-coated synergistically modified LNO (LA-LNO), involving in situ wet coating followed by high-temperature lithiation, demonstrating that this modification reduces the Ni²⁺ content in LA-LNO. These alterations effectively alleviate stress variations within the particles during cycling and prevent electrolyte attack on the bulk material in the event of particle fracturing. The La₄NiLiO₈ epitaxial coating acts as a protective interfacial barrier while also diminishing interface impedance due to its superior electronic and ionic conductivity. This highlights the substantial improvement in the electrochemical performance of LNO achieved through La/Al synergistic modification, providing a valuable benchmark for the synthesis of high-nickel and cobalt-free cathode materials.
- Lithium-ion battery,
- High nickel cobalt-free cathode material,
- LiNiO₂,
- Synergistic modification,
- Double hydrolysis reaction
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沈阳化工大学材料科学与工程学院沈阳 110142

Enhancing cycling stability of high-nickel cobalt-free LiNiO2 through La/Al synergistic modification: A one-step synthesis approach

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通讯作者: 陈斌, bchen63@163.com

Enhancing cycling stability of high-nickel cobalt-free LiNiO₂ through La/Al synergistic modification: A one-step synthesis approach