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- W3137854619 abstract "Abstract Poor cycling stability and rate capability are two key issues needing to be solved for Li‐ and Mn‐rich oxide cathode material for lithium‐ion batteries (LIBs). Herein, a novel perovskite electron–ion mixed conductor Nd 0.6 Sr 0.4 CoO 3 (NSCO) is used as the coating layer on Li 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 2 (LNCMO) to simultaneously enhance its cycling stability and rate capability. By coating 3 wt% NSCO, LNCMO–3NSCO exhibits an optimal cycling performance with a capacity retention of 99% at 0.1C (1C = 200 mA g −1 ) after 60 cycles, 91% at 1C after 300 cycles, and 54% at 20C after 1000 cycles, much better than 78%, 63%, and 3% of LNCMO, respectively. Even at a high charge and discharge rate of 50C, LNCMO–3NSCO exhibits a discharge capacity of 53 mAh g −1 and a mid‐point discharge voltage of 2.88 V, much higher than those of LNCMO (24 mA h g −1 and 2.40 V, respectively). Benefiting from the high electronic conductivity (1.46 S cm −1 ) and ionic conductivity (1.48 × 10 −7 S cm −1 ), NSCO coating not only suppresses transition metals dissolution and structure transformation, but also significantly enhances electronic conductivity and Li + diffusion coefficient of LNCMO by an order of magnitude." @default.
- W3137854619 created "2021-03-29" @default.
- W3137854619 creator A5012770174 @default.
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- W3137854619 creator A5070851387 @default.
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- W3137854619 creator A5087447359 @default.
- W3137854619 date "2021-03-26" @default.
- W3137854619 modified "2023-10-17" @default.
- W3137854619 title "A Novel Perovskite Electron–Ion Conductive Coating to Simultaneously Enhance Cycling Stability and Rate Capability of Li<sub>1.2</sub>Ni<sub>0.13</sub>Co<sub>0.13</sub>Mn<sub>0.54</sub>O<sub>2</sub> Cathode Material for Lithium‐Ion Batteries" @default.
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