%0 Journal Article
%T Structural Engineering of Prussian Blue Analogues Enabling All-Climate and Ultralong Cycling Sodium-Ion Batteries.
%A Peng J
%A Hua W
%A Yang Z
%A Li JY
%A Wang J
%A Liang Y
%A Zhao L
%A Lai W
%A Wu X
%A Cheng Z
%A Peleckis G
%A Indris S
%A Wang JZ
%A Liu HK
%A Dou SX
%A Chou S
%J ACS Nano
%V 0
%N 0
%D 2024 Jul 15
%M 39007545
%F 18.027
%R 10.1021/acsnano.4c07021
%X The development of cost-efficient, long-lifespan, and all-climate sodium-ion batteries is of great importance for advancing large-scale energy storage but is plagued by the lack of suitable cathode materials. Here, we report low-cost Na-rich Mn-based Prussian blue analogues with superior rate capability and ultralong cycling stability over 10,000 cycles via structural optimization with electrochemically inert Ni atoms. Their thermal stability, all-climate properties, and potential in full cells are investigated in detail. Multiple in situ characterizations reveal that the outstanding performances benefit from their highly reversible three-phase transformations and trimetal (Mn-Ni-Fe) synergistic effects. In addition, a high sodium diffusion coefficient and a low volume distortion of 2.3% are observed through in situ transmission electron microscopy and first-principles calculations. Our results provide insights into the structural engineering of Prussian blue analogues for advanced sodium-ion batteries in large-scale energy storage applications.