New insight into the effect on the alkali cations of Li⁺, Na⁺, and K⁺ pre-intercalated between adjacent layers of Mn₃(PO₄)₂·3H₂O towards the charge storage mechanism and their electrochemical kinetics of intercalation/deintercalation in three alkali electrolytes is demonstrated. The electrochemical performance of the designed LiMn₃(PO₄)₂·3H₂O material outperforms that most of Mn-based pseudocapacitive electrode materials. The designed unique stratified structure is attractive for quick charge migration, which confirms that the appropriate pre-intercalation of alkali cation between layers is an efficient strategy to improve kinetics for the high-power density pseudocapacitive supercapacitor energy storage application.

对预插在相邻Mn ₃ (PO ₄ ) ₂ ·3H _{2 O层之间的Li} ⁺、Na ⁺和K ⁺的碱金属阳离子对电荷存储机制及其嵌入/脱嵌电化学动力学的影响的新见解在三种碱性电解质中得到证明。设计的Li Mn ₃ (PO ₄ ) ₂ ·3H ₂的电化学性能O 材料优于大多数 Mn 基赝电容电极材料。所设计的独特分层结构对快速电荷迁移具有吸引力，这证实了在层间适当预插入碱金属阳离子是提高高功率密度赝电容超级电容器储能应用动力学的有效策略。