TY  - JOUR
AU  - Wang, Cuifeng
AU  - Liang, Zhanshuo
AU  - Zhuo, Haoxiang
AU  - Li, Guohua
AU  - Wang, Zhenyao
AU  - Guo, Lihao
AU  - Jin, Zhihao
AU  - Liu, Haolin
AU  - Qin, Jianlong
AU  - Ren, Zhimin
AU  - Qi, Xiaopeng
AU  - Sun, Xueliang
AU  - Wang, Jiantao
PY  - 2025
TI  - Enhanced Stability in Li-Rich Cathodes via Strong Nb4d-O2p Configurations and Li3PO4 Coating
JO  - Energy Material Advances
SN  - 2097-1133
SP  - 0254
VL  - 6
AB  - Lithium-rich layered oxides (LLOs) are considered promising cathode candidates for high-energy-density lithium-ion batteries. However, poor cycle stability and limited rate performance severely hinder their practical application. Herein, the strong Nb4d-O2p configurations at the Mn sites regulating the p-band center of the O 2p are designed to inhibit oxygen release and relieve cycle degradation. Meanwhile, the in situ constructed Li3PO4 surface coating is presented to obtain an excellent transmission rate of Li+. Consequently, LLO-NP exhibits excellent performance, delivering a capacity retention of 83.6% at 45 °C after 200 cycles (compared to 61.5% for the unmodified LLO), and a rate capability of 199 mAh g−1 at 3 C (compared to 174.8 mAh g−1 for the unmodified LLO). Integrating oxygen coordination regulation with surface structure design, this novel modification strategy inspires the design of high-performance LLOs.
UR  - https://doi.org/10.34133/energymatadv.0254
DO  - 10.34133/energymatadv.0254