Hierarchical Phosphide-Based Hybrid Anodes for High-Performance Lithium-Ion Batteries
Shanshan Xiao, Yong Chen, Xianggang Zhou, Hechen Sun, Wu‐Bin Wan, Yingqi Li, Ruiqi Yao, Fei Bi, Li Zhao, Liyan Wang, Xingyou Lang, Qing Jiang
Abstract
Transition metal phosphides (TMPs) have emerged as promising anode materials for lithium-ion batteries (LIBs). However, their poor intrinsic conductivity and significant volume changes result in slow redox kinetics and structural collapse during cycling, which hinder their practical application. Here, a hierarchical hybrid anode is synthesized by evenly dispersing Ni 2 P particles with N-doped carbon encapsulation on Co(OH) 2 nanosheets (Co(OH) 2 /Ni 2 P@N–C). This distinctive hybrid structure enhances electron/ion conductivity and reduces the Li + transport distance, thereby boosting LIB performance. The hierarchical Co(OH) 2 /Ni 2 P@N–C hybrid anode delivers a high reversible capacity of 610 mAh g –1 at 0.05 A g –1 and exhibits exceptional long-term stability. This approach could pave the way for the development of high-performance LIBs and provide crucial guidance for designing high-energy-density anodes based on TMPs.