High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability

Palaniyandy, NReddy, MVZaghib, zKKebede, Mesfin ARaju, KumarModibedi, Remegia MMathe, Mahlanyane KAbhilash, KPBalamuralikrishnan, S2022-07-042022-07-042022-05Palaniyandy, N., Reddy, M., Zaghib, z., Kebede, M.A., Raju, K., Modibedi, R.M., Mathe, M.K. & Abhilash, K. et al. 2022. High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability. Journal of Alloys and Compounds, 903. http://hdl.handle.net/10204/124510925-83881873-4669https://doi.org/10.1016/j.jallcom.2022.163869http://hdl.handle.net/10204/12451Typically, the high electrochemical performance of cathode materials is achieved by fine-tuning the surface morphology and particle size of the nano-electrode materials. Two-dimensional (2D) nanomaterials like nanoplates show astounding advantages of high surface area and shorter diffusion path-length, inducing improved Li-ion kinetics compared to bulk and 1D cathodes. This study reports the fabrication of 2Dnanoplates of LiMn1.5Ni0.5O4 via the solid-state method using a-MnO2 nanorods prepared from EMD, as a highly stable and long-cycle life cathode for lithium-ion battery (LIBs) applications. The fabricated 2DLMNO nanoplates delivered an exceptional specific capacity of 88 mAh g-1 at a high current rate of 1 C and 98% retention of its initial capacity upon 1000 consecutive cycles. The nanoplates rendered a specific capacity of 77 mAh g-1 even at a high current rate of 7 C. The aligned LMNO stacked nanoplates with exposed {111} facets, and large Mn4+ concentration revealed high lithium-ion coefficient, decreased Mn dissolution, and high interfacial stability, which resulted in enhanced cycle stability and rate capability. The remarkable electrochemical performance of the LMNO cathode was attributed to its unique 2D-nanoplates structure, which is favourable for accommodating volume changes during the repeated insertion and de-insertion of lithium ions.Abstractena-MnO2 nanorodsLiMn1.5Ni0.5O4 nanoplatesSolid-state methodStable capacityUltra-long-cycle lifeHigh rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stabilityArticlePalaniyandy, N., Reddy, M., Zaghib, z., Kebede, M. A., Raju, K., Modibedi, R. M., ... Balamuralikrishnan, S. (2022). High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability. Journal of Alloys and Compounds, 903, http://hdl.handle.net/10204/12451Palaniyandy, N, MV Reddy, zK Zaghib, Mesfin A Kebede, Kumar Raju, Remegia M Modibedi, Mahlanyane K Mathe, KP Abhilash, and S Balamuralikrishnan "High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability." Journal of Alloys and Compounds, 903 (2022) http://hdl.handle.net/10204/12451Palaniyandy N, Reddy M, Zaghib z, Kebede MA, Raju K, Modibedi RM, et al. High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability. Journal of Alloys and Compounds, 903. 2022; http://hdl.handle.net/10204/12451.TY - Article AU - Palaniyandy, N AU - Reddy, MV AU - Zaghib, zK AU - Kebede, Mesfin A AU - Raju, Kumar AU - Modibedi, Remegia M AU - Mathe, Mahlanyane K AU - Abhilash, KP AU - Balamuralikrishnan, S AB - Typically, the high electrochemical performance of cathode materials is achieved by fine-tuning the surface morphology and particle size of the nano-electrode materials. Two-dimensional (2D) nanomaterials like nanoplates show astounding advantages of high surface area and shorter diffusion path-length, inducing improved Li-ion kinetics compared to bulk and 1D cathodes. This study reports the fabrication of 2Dnanoplates of LiMn1.5Ni0.5O4 via the solid-state method using a-MnO2 nanorods prepared from EMD, as a highly stable and long-cycle life cathode for lithium-ion battery (LIBs) applications. The fabricated 2DLMNO nanoplates delivered an exceptional specific capacity of 88 mAh g-1 at a high current rate of 1 C and 98% retention of its initial capacity upon 1000 consecutive cycles. The nanoplates rendered a specific capacity of 77 mAh g-1 even at a high current rate of 7 C. The aligned LMNO stacked nanoplates with exposed {111} facets, and large Mn4+ concentration revealed high lithium-ion coefficient, decreased Mn dissolution, and high interfacial stability, which resulted in enhanced cycle stability and rate capability. The remarkable electrochemical performance of the LMNO cathode was attributed to its unique 2D-nanoplates structure, which is favourable for accommodating volume changes during the repeated insertion and de-insertion of lithium ions. DA - 2022-05 DB - ResearchSpace DP - CSIR J1 - Journal of Alloys and Compounds, 903 KW - a-MnO2 nanorods KW - LiMn1.5Ni0.5O4 nanoplates KW - Solid-state method KW - Stable capacity KW - Ultra-long-cycle life LK - https://researchspace.csir.co.za PY - 2022 SM - 0925-8388 SM - 1873-4669 T1 - High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability TI - High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability UR - http://hdl.handle.net/10204/12451 ER -25851