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Study on Synthesis of a Novel Ni-Rich Co-Free Cathode Material LiNi0.94Mn0.04Al0.02O2 AITranslate

YANG Ze-long; MENG Qi
National and Local Joint Engineering Research Center for Lithium-Ion Batteries and Materials Preparation Technology,Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology;National and Local Joint Engineering Research Center for Lithium-Ion Batteries and Materials Preparation Technology,Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology
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Abstract AITranslate

Lamellar Ni-rich Co-free cathode material LiNi0.94Mn0.04Al0.02O2(NMA)was synthesized by a solid-phase sintering process,and the effects of different sintering temperatures on the crystal structure,microstructure and electrochemical performance of NMA cathode material were investigated.The results show that with excessively low sintering temperature,the crystallinity of the NMA cathode material is re-latively low and residual lithium is formed on the surface,while the extremely high sintering temperature leads to a deterioration of the lamellar structure and an increase in harmful side reactions on the electrode surface.The NMA-750 material synthesized at the optimal temperature of 750℃demonstrates excellent particle morphology,minimal lithium-nickel mixing,and the most complete lamellar structure.Simultaneously,the material exhibits the optimal electrochemical performance:its initial discharge specific capacity(3.0~4.5 V,1 C)is 199.5 mA·h/g,and the capacity retention rate reaches 79.04%after 100 cycles.It also has a discharge specific capacity of 147.6 mA·h/g at 5 C,presenting excellent rate performance.

KeyWords AITranslate

nickel-rich cobalt-free cathode material LiNi0.94Mn0.04Al0.02O2 sintering temperature crystal structure microstructure electrochemical performance lamellar structure

1唐剑,梁迎迎,马永华,李秉毅.醇镁加合物载体在Ziegler-Natta催化剂中的应用进展[J].石油化工,2024,53(2):227-234.

2桂子顺,李延凤,刘文俊,余海洲.Fe-44.4%Mo-4.9%B-2.5%Cr-2.9%Ni金属陶瓷烧结阶段晶粒生长机理[J].硬质合金,2024,41(1):20-27.

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DOI：

Chinese Library Classification Number:TB34[一般工业技术—材料科学与工程]

Citation Information:

Lamellar Ni-rich Co-free cathode material LiNi0.94Mn0.04Al0.02O2(NMA)was synthesized by a solid-phase sintering process,and the effects of different sintering temperatures on the crystal structure,microstructure and electrochemical performance of NMA cathode material were investigated.The results show that with excessively low sintering temperature,the crystallinity of the NMA cathode material is re-latively low and residual lithium is formed on the surface,while the extremely high sintering temperature leads to a deterioration of the lamellar structure and an increase in harmful side reactions on the electrode surface.The NMA-750 material synthesized at the optimal temperature of 750℃demonstrates excellent particle morphology,minimal lithium-nickel mixing,and the most complete lamellar structure.Simultaneously,the material exhibits the optimal electrochemical performance:its initial discharge specific capacity(3.0~4.5 V,1 C)is 199.5 mA·h/g,and the capacity retention rate reaches 79.04%after 100 cycles.It also has a discharge specific capacity of 147.6 mA·h/g at 5 C,presenting excellent rate performance.

quote

GB/T 7714-2015 [1] YANG Ze-long, MENG Qi. Study on Synthesis of a Novel Ni-Rich Co-Free Cathode Material LiNi0.94Mn0.04Al0.02O2[J]. Rare Metals and Cemented Carbides, 2024(1): 106-111.
MLA [1] YANG Ze-long, and MENG Qi. "Study on Synthesis of a Novel Ni-Rich Co-Free Cathode Material LiNi0.94Mn0.04Al0.02O2." Rare Metals and Cemented Carbides, no. 1, 2024, pp. 106-111.
APA [1] YANG Ze-long, & MENG Qi. (2024). Study on Synthesis of a Novel Ni-Rich Co-Free Cathode Material LiNi0.94Mn0.04Al0.02O2. Rare Metals and Cemented Carbides(1), 106-111.
IEEE [1] YANG Ze-long and MENG Qi, "Study on Synthesis of a Novel Ni-Rich Co-Free Cathode Material LiNi0.94Mn0.04Al0.02O2," Rare Metals and Cemented Carbides, no. 1, pp. 106-111, 2024. keywords: {nickel-rich cobalt-free cathode material;LiNiMnAlO;sintering temperature;crystal structure;microstructure;electrochemical performance;lamellar structure}