Surface modification of Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode materials via a novel mechanofusion alloy route |
| |
| Affiliation: | 1. Energy Lab, Samsung Advanced Institute of Technology (SAIT), Electronic Materials Research Complex, 130 Samsung-ro, Gyeonggi-do 16678, Republic of Korea;2. Analytical Engineering group Samsung Advanced Institute of Technology SAIT, Samsung Electronics Co., Ltd., Electronic Materials Research Complex, 130, Samsung-ro, Yongtong-gu, Suwon-si, Gyeonggi-do, 16678, Republic of Korea;3. Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea;1. Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand;2. Centre of Excellence for Energy Storage Technology (CEST), Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand;1. School of Material Science and Technology Jiangsu University, Zhenjiang, 212013, China;2. School of Materials Science and Engineering, The University of New South Wales, Sydney, 2052, Australia;1. Center of Energy Convergence, Korea Institute of Science and Technology, Hwarang-ro, 14 gil-5, Seongbuk-gu, Seoul 02792, Republic of Korea;2. Department of Energy and Environmental Engineering, Korea University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea;3. Department of Energy and Chemical Engineering, Incheon National University, 119, Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea |
| |
| Abstract: | This study aimed to prepare a composite coating material comprising a solid ionic conductor of lithium aluminum titanium phosphate (Li1.4Al0.4Ti1.6(PO4)3, LATP) and porous carbon through a sol-gel method. LiNi0.8Co0.1Mn0.1O2 (LNCM811) cathode material with dual-functional composite conductors (i.e., LATP@porous carbon), denoted as LATP-PC, was prepared. The dry-coating method, also called the “mechanical-fusion alloy route,” was used to modify Ni-rich LNCM811 cathode materials. X-ray diffraction (XRD), micro-Raman spectroscopy, and X-ray photoelectron spectroscopy confirmed that the LATP ionic conductor generated herein was uniformly deposited on 3D porous carbon and served as a dual-functional composite coating on LNCM811. Furthermore, the capacity retention of LATP-PC@LNCM811 was approximately 85.57% and 80.86% after 100 cycles at ?20 °C and 25 °C, respectively. By contrast, pristine LNCM811 had the capacity retention of 78% and 74.96% at ?20 °C and 25 °C, respectively. Furthermore, the high-rate capability of the LATP-PC@LNCM811 material was markedly enhanced to 169.81 mAh g?1 at 10C relative to that of pristine LNCM811, which was approximately 137.67 mAh g?1. The electrochemical performance of LNCM811 was enhanced by the uniform dual-conductive composite coating. The results of the study indicate that the LATP-PC@LNCM811 composite material developed herein is a potentially promising material for future high-energy Li-ion batteries. |
| |
| Keywords: | Low temperature Dual-conductor Cycle stability LATP Porous carbon |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
