Research progress and challenges in surface modification of high-nickel ternary cathode materials
ZHANG Zibo
HUANG Jianye
WEI Zhenyao
DENG Yonghong
WANG Jun
Abstract：High-nickel ternary cathode materials(LiNixCoyMnzO2),as key components for next generation high energy density lithium-ion batteries,have garnered significant attention due to their high specific capacity and cost advantages.However,their poor cycling stability severely limits practical applications.This review systematically analyzes the failure mechanisms of high-nickel materials during high-voltage cycling,highlighting that the synergistic effects of surface reconstruction and mechanical failure are the primary causes of capacity decay.To address these challenges,key surface modification strategies are summarized,including inert material coatings(oxides,fluorides,phosphates),conductive material coatings(lithium-containing compounds,carbon-based materials,polymers),surface structural modifications,and synergistic optimization of composite coating techniques.These modification strategies significantly enhance interfacial stability and cycling lifespan of high-nickel ternary cathode materials.Finally,future development directions for high-nickel ternary cathode materials are prospected.
Keywords：high-nickel ternarycathode materialsfailure mechanismssurface modificationcoating techniques
Publication Date：2025-12-25
Online Publishing Date：2026-01-06(First online date of this platform, not the publication date of the document)
Pages：8( 540-546,553 )