文献类型：期刊文献

英文题名：Anion-cation synergistic interactions for low-temperature and fast-charging performance in sodium batteries

作者：Shen, Yixing[1,2];Xu, Jipeng[3];Li, Yana[4];Che, Haiying[2];Zhao, Shuzhi[1];Ishaq, Muhammad[4];Jabeen, Maher[2];Zhang, Yunlong[1,2];Wu, Jiafang[5];Li, Jingkun[3];Lian, Cheng[3];Ma, Zi-Feng[1,2,4]

机构：[1]Shanghai Jiao Tong Univ, Shanghai Electrochem Energy Devices Res Ctr, Dept Chem Engn, Shanghai 200240, Peoples R China;[2]Zhejiang Natrium Energy Co Ltd, Shaoxing 312300, Zhejiang, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]Shanghai Jiao Tong Univ, Shaoxing Res Inst Renewable Energy & Mol Engn, Shaoxing 312300, Zhejiang, Peoples R China;[5]Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

年份：2025

卷号：13

期号：25

起止页码：19631

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20252218517838);WOS:【SCI-EXPANDED(收录号:WOS:001496139000001)】；

基金：This work was supported by the Zhejiang Key Research and Development Program (2020C01128 and 2025C01155) and the National Natural Science Foundation of China (21938005 and 22005190). We acknowledge the valuable characterization and analysis provided by the Instrumental Analysis Center of Shanghai Jiao Tong University.

语种：英文

外文关键词：Sodium-ion batteries - Solvation

摘要：Battery polarization increases dramatically at low temperatures (<= 20 degrees C) and high charging rates (>1C), making polarization reduction critical for improving both low-temperature and fast-charging performance. In this study, we explore the synergistic effect of anion-cation regulation on the solvation structure to mitigate battery polarization and enhance the low-temperature kinetic performance of electrolytes. As confirmed by a series of temperature-dependent probes (Raman, NMR, and FTIR) and molecular dynamics (MD) simulations, the stabilization of an anion-rich solvation structure via cation-anion synergistic interactions suppresses solvent penetration into the inner solvation shell, effectively lowering the desolvation energy barrier and suppressing dendrite formation. This enables stable cycling at -20 degrees C and 3C while also supporting operation at -60 degrees C. The Na & Vert;Na symmetrical cell demonstrates outstanding cycling stability, with over 7500 hours of stripping/plating durability at -40 degrees C and a current density of 0.5 mA cm(-2). Additionally, the Na4Fe3(PO4)(2)P2O7 & Vert;Na half cells retain an ultra-high capacity of 88.7% after 1500 cycles at -20 degrees C and 3C. Under harsher conditions (-40 degrees C and 0.5C), the NFPP & Vert;Na battery with 1 M-BG2-LP electrolyte endures over 3000 cycles, maintaining 94.4% capacity retention and an average coulombic efficiency of 99.6%. Furthermore, the Na4Fe3(PO4)(2)P2O7 & Vert;hard carbon pouch batteries exhibit excellent low-temperature performance, with a capacity retention of 93.4% after 500 cycles at -40 degrees C and 0.3C. This work demonstrates a promising pathway for developing robust energy storage solutions suitable for extreme environmental conditions.