Modification of NiCoP nanocages anodes using epoxy-functionalized silane to improve electrochemical performance in lithium-ion batteries

Authors：Luan, Hong; Zhao, Anning; Xiao, Yuan; Peng, Ning^*; Wen, Yuqing; Liang, Libo

Source：Journal of Materials Science: Materials in Electronics , 2023, 34(10): 905.

DOI：10.1007/s10854-023-10304-1

• SURFACE MODIFICATION
• CARBON NANOTUBES
• METAL
• NANOPARTICLES
• PHOSPHORUS
• AGENTS

Bimetallic NiCoP nanoparticle is one of the most promising anode materials for lithium-ion batteries (LIBs). However, its cycling stability is poor due to its high tendency toward aggregation originated from the large cohesive forces. To overcome this drawback, a unique NiCoP nanocages is prepared and modified with epoxy-functionalized silane KH580 by a simple hydrolysis method. This strategy involves the significant improvement of the dispersity of the NiCoP nanocages during charge/discharge processes. From the electrochemical measurements, KH580-NiCoP nanocages-0.5 wt% exhibit higher lithium storage performance (505.3 mA h g(-1) at 0.1 A g(-1)), excellent cyclability (367 mA h g(-1) after 200 cycles at 0.5 A g(-1)), and outstanding rate capacity (280.8 mA h g(-1) at 1 A g(-1)). This excellent electrochemical performance can be attributed to the improved electron transfer and structural stability.

• Institution
  桂林理工大学