TY - JOUR
T1 - Providing A Long-Term Protection for NCM811 Cathode Material by Al2O3 Coating Layer
AU - Wang, Jing
AU - Yuan, Qiang
AU - Wang, Ran
AU - Tan, Guoqiang
AU - Su, Yuefeng
AU - Li, Danhua
AU - Wu, Feng
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2020/1/17
Y1 - 2020/1/17
N2 - The degradation of Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode material is successfully suppressed via a facile Al2O3 coating method. The coated Al2O3 layer on the electrode surface is inactive and amorphous, it does not react with the electrolyte and could provide a long-Term protection on the electrode during cycling. The electrochemical performance of the modified NCM811 was improved dramatically both at room and elevated temperature. The capacity retention of pristine NCM811 was enhanced from 81.8% to 91.7% when the coating amount reached to 2 wt% at 25°C and much increased from 68.5% to 87.7% at 55°C. Such excellent high temperature performance clearly confirmed the effect of Al2O3 on the structure stability of electrode, it successfully built a favorable protection of the bulk NCM811 from direct contact with electrolyte and suppressed the undesired side reactions.
AB - The degradation of Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode material is successfully suppressed via a facile Al2O3 coating method. The coated Al2O3 layer on the electrode surface is inactive and amorphous, it does not react with the electrolyte and could provide a long-Term protection on the electrode during cycling. The electrochemical performance of the modified NCM811 was improved dramatically both at room and elevated temperature. The capacity retention of pristine NCM811 was enhanced from 81.8% to 91.7% when the coating amount reached to 2 wt% at 25°C and much increased from 68.5% to 87.7% at 55°C. Such excellent high temperature performance clearly confirmed the effect of Al2O3 on the structure stability of electrode, it successfully built a favorable protection of the bulk NCM811 from direct contact with electrolyte and suppressed the undesired side reactions.
UR - http://www.scopus.com/inward/record.url?scp=85079752217&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/735/1/012007
DO - 10.1088/1757-899X/735/1/012007
M3 - Conference article
AN - SCOPUS:85079752217
SN - 1757-8981
VL - 735
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012007
T2 - 7th Annual International Conference on Material Science and Environmental Engineering, MSEE 2019
Y2 - 15 November 2019 through 16 November 2019
ER -