Insight and regulation of interfacial coordination chemistry of high-voltage LiCoPO 4 cathode via functionalized carbon layer anchoring for robust surface passivation

Key Points

• To improve the performance of lithium cobalt phosphate (LiCoPO4) by enhancing its surface passivation via functionalized carbon layers.
• Applies functionalized carbon layers for surface passivation of LiCoPO4.
• Evaluates Coulombic efficiency and capacity retention during high-voltage cycling.
• Assesses the interfacial coordination chemistry impacts.
• Functionalized carbon layer significantly improves Coulombic efficiency compared to untreated LiCoPO4.
• Capacity retention is enhanced under high-voltage conditions with surface passivation.
• Demonstrates improved interfacial coordination chemistry supports better cycling stability.