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Enhanced Electrochemical Performance Of Li-Ion Battery Cathodes By Atomic Layer Deposition, Yan Gao
Enhanced Electrochemical Performance Of Li-Ion Battery Cathodes By Atomic Layer Deposition, Yan Gao
Doctoral Dissertations
”Li-ion battery now plays an irreplaceable role in supplying green and convenient energy. In this work, atomic layer deposition (ALD) was used to modify Li-ion battery cathode particles for performance enhancement.
An ultrathin and conductive CeO2 ALD film was deposited on Li-rich layered cathode particles, of which the specific capacity and cyclic stability were significantly improved. On the same cathode particles, FeOx ALD and post-annealing resulted in a stable and conductive surface spinel phase to improve the performance.
Synergetic TiN coating and Ti doping were performed on a LiFePO4 (LFP) cathode and extended its cycle life. The …