绿色能源与环境（英文）2026，Vol.11Issue(5)：1255-1294,40.DOI:10.1016/j.gee.2026.03.017
Where to go for the chemical designs of P2 phase Mn-based sodium cathodes
Where to go for the chemical designs of P2 phase Mn-based sodium cathodes?
摘要
Abstract
P2 Mn based cathode materials have become one of the most promising candidate cathode materials due to their high specific capacity,suitable operating voltage and low-cost advantages.However,their practical application is still limited by challenges such as high-voltage phase transition,Jahn-Teller effect,Na+/vacancy ordering and air sensitivity.So far,a comprehensive summary study of the corresponding mecha-nisms and design principles for modification design is still lacking.Based on the multi-scale ontological relationship analysis,this review firstly constructs the systematic research framework of P2 Mn based cathode materials,elucidates the constitutive relationship between the transition metal interlayer slip barrier-oxygen stacking sequence and the thermodynamic origins of the irreversible phase transition,and reveals the in-fluence of the lattice doping-surface passivation synergistic regulation strategy on the dynamic coupling mechanism of the coordination distortion and the lattice oxygen activation in Mn3+.At the same time,it provides the theoretical support for deciphering the degradation of the air stability.In addition,this work examines the direction of elemental doping and surface/interfacial engineering to overcome the limitations in capacity and cycling stability,as well as the optimized design of low temperature cathode/electrolyte interface,aiming to summarize the design principle,mechanism and electrochemical performance.Finally,the modified design of such cathode materials is summarized,the existing key scientific issues of these materials are pointed out,and the direction of development in the near future is proposed.关键词
Na-ion batteries/P2 Mn based oxides/Performance degradation mechanism/Modification engineering/Low temperature interface engineeringKey words
Na-ion batteries/P2 Mn based oxides/Performance degradation mechanism/Modification engineering/Low temperature interface engineering引用本文复制引用
Rui Huang,Shaohua Luo,Zhaozhan Shi,Lixiong Qian,Xin Liu,Shengxue Yan..Where to go for the chemical designs of P2 phase Mn-based sodium cathodes[J].绿色能源与环境（英文）,2026,11(5):1255-1294,40.基金项目
This work was financially supported by the National Nat-ural Science Foundation of China(52274295),Natural Science Foundation of Hebei Province(E2025501028,E2025501032),the Fundamental Research Funds for the Central Universities(N2523045),The Basic Research Program Project of Shijiazhuang City for Universities Stationed in Hebei Province(241790937A),2025 Hebei Provincial Post-graduate Student Innovation Ability training funding project(CXZZBS2025210). （52274295）
