首页|A regeneration strategy based on synchronous utilization in surface impurities of degradation nickel-rich material
A regeneration strategy based on synchronous utilization in surface impurities of degradation nickel-rich material
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The LiNi0.83Co0.12Mn0.05O2(Ni-rich NCM)cathode materials have been widely studied owing to their high energy density and excellent rate capability.However,Ni-rich NCM is prone to form large amounts of lithium impurities and causes structural decline,resulting in inconvenient material storage.To this end,Li4SiO4/SiO2 was used as a structural regulator to eliminate the residual lithium and convert the irreversible phase.The Li4SiO4/SiO2 pro-tective coating effectively suppresses the corrosion of the electrolyte by blocking the direct contact between the electrode and the electrolyte,while having a high air stability under the hydrophobic action.In addition,SiO2 has excellent corrosion resistance,which further enhances the cyclic stability of the material.The obtained regen-erated NCM material displayed a great capacity of 198.6 mAh g-1 at 0.3 C and long cycling stability(capacity retention of 82.2％after 250 cycles).This simple repair strategy significantly reduces the loss rate in industrial production and enhances the electrochemical performance while achieving material reuse.
School of Materials Science and Engineering,Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery,Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power Battery,Changzhou University,Changzhou,213164,PR China
NETL
NSTL
万方数据
