Ultra‑Stable Sodium‑Ion Battery Enabled by All‑Solid‑State Ferroelectric‑Engineered Composite Electrolytes  

作　　者：Yumei Wang Zhongting Wang Xiaoyu Xu Sam Jin An Oh Jianguo Sun Feng Zheng Xiao Lu Chaohe Xu Binggong Yan Guangsheng Huang Li Lu 

机构地区：[1]College of Aerospace Engineering,Chongqing University,Chongqing 400044,People’s Republic of China [2]National University of Singapore(Chongqing)Research Institute,Chongqing 401123,People’s Republic of China [3]College of Materials Science and Engineering,Chongqing University,Chongqing 400044,People’s Republic of China [4]Department of Mechanical Engineering,National University of Singapore,9 Engineering Drive 1,Singapore 117575,Singapore [5]Fujian Key Laboratory of Special Energy Manufacturing,Xiamen Key Laboratory of Digital Vision Measurement,Huaqiao University,Xiamen 361021,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第11期704-717,共14页纳微快报（英文版）

基　　金：supported by the National University of Singapore(Chongqing)Research Institute,National University of Singapore,Chongqing Postdoctoral Research Special Funding(2021XM2002);Overseas Postdoctoral Research Start-up Funding,Natural Science Foundation of Chongqing(cstc2021jcyjmsxmX0086);Chongqing Innovative Project for oversea-experience researchers(cx2023037);the Open Project Program of Fujian Key Laboratory of Special Energy Manufacturing.

摘　　要：Symmetric Na-ion cells using the NASICON-structured electrodes could simplify the manufacturing process,reduce the cost,facilitate the recycling post-process,and thus attractive in the field of large-scale stationary energy storage.However,the long-term cycling performance of such batteries is usually poor.This investigation reveals the unavoidable side reactions between the NASICON-type Na_(3)V_(2)(PO_(4))_(3)(NVP)anode and the commercial liquid electrolyte,leading to serious capacity fading in the symmetric NVP//NVP cells.To resolve this issue,an all-solid-state composite electrolyte is used to replace the liquid electrolyte so that to overcome the side reaction and achieve high anode/electrolyte interfacial stability.The ferroelectric engineering could further improve the interfacial ion conduction,effectively reducing the electrode/electrolyte interfacial resistances.The NVP//NVP cell using the ferroelectric-engineered composite electrolyte can achieve a capacity retention of 86.4%after 650 cycles.Furthermore,the electrolyte can also be used to match the Prussianblue cathode NaxFeyFe(CN)_(6−z)·nH_(2)O(NFFCN).Outstanding long-term cycling stability has been obtained in the all-solid-state NVP//NFFCN cell over 9000 cycles at a current density of 500 mA g^(-1),with a fading rate as low as 0.005%per cycle.

关 键 词：Sodium-ion battery NVP anode ALL-SOLID-STATE Cyclic stability FERROELECTRIC 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]