Na3V2(PO4)3 Cathode Materials: Progress in Structural Optimization and Performance Enhancement

초록

NASICON-structured Na3V2(PO4)3 (NVP) cathodes constitute a critical material platform for sodium-ion batteries through inherent three-dimensional frameworks and multi-electron redox accessibility. This review systematically examines crystallographic foundations governing electrochemical performance, revealing site-selective extraction mechanisms and migration energy barriers that fundamentally limit capacity utilization. Electronic conductivity constraints necessitate sophisticated enhancement strategies encompassing multi-dimensional carbon architectures, heteroatom doping methodologies, and strategic transition metal sub stitution. Contemporary advances in computational voltage mapping and multi-element doping schemes demonstrate successful activation of high-voltage redox couples while maintaining framework integrity. Inte gration of theoretical screening protocols with experimental validation establishes rational design principles for earth-abundant compositions, addressing commercial viability requirements.

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