钼的添加对锂离子电池富镍正极材料结构和电化学性能的影响。
Influence of Mo addition on the structural and electrochemical performance of Ni-rich cathode material for lithium-ion batteries.
作者信息
Sattar Tahir, Lee Seung-Hwan, Jin Bong-Soo, Kim Hyun-Soo
机构信息
Next Generation Battery Research Center, Korea Electrotechnology Research Institute (KERI), Changwon-si, Gyeongsangnam-do, 51543, Republic of Korea.
Electro-Functionality Materials Engineering, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.
出版信息
Sci Rep. 2020 May 22;10(1):8562. doi: 10.1038/s41598-020-64546-8.
Molybdenum modified LiNiCoMnO cathode with different doping concentrations (0-5 wt.%) is successfully prepared and its electrochemical performances are investigated. It is demonstrated that molybdenum in LiNiCoMnO has a positive effect on structural stability and extraordinary electrochemical performances, including improved long-term cycling and high-rate capability. Among all samples, the 1 wt. % molybdenum LiNiCoMnO delivers superior initial discharge capacity of 205 mAh g (0.1 C), cycling stability of 89.5% (0.5 C) and rate capability of 165 mAh g (2 C) compared to those of others. Therefore, we can conclude that the 1 wt. % molybdenum is an effective strategy for Ni-rich LiNiCoMnO cathode used in lithium ion batteries.
成功制备了不同掺杂浓度（0-5 wt.%）的钼改性LiNiCoMnO正极，并对其电化学性能进行了研究。结果表明，LiNiCoMnO中的钼对结构稳定性和优异的电化学性能有积极影响，包括改善长期循环性能和高倍率性能。在所有样品中，1 wt.%钼的LiNiCoMnO相比其他样品具有205 mAh g（0.1 C）的优异初始放电容量、89.5%（0.5 C）的循环稳定性和165 mAh g（2 C）的倍率性能。因此，我们可以得出结论，1 wt.%钼是用于锂离子电池的富镍LiNiCoMnO正极的有效策略。
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