Ultra-Stable Sodium-Ion Battery Enabled by All-Solid-State Ferroelectric-Engineered Composite ElectrolytesOACSTPCDEI
Ultra-Stable Sodium-Ion Battery Enabled by All-Solid-State Ferroelectric-Engineered Composite Electrolytes
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 Na3V2(PO4)3(NVP)anode and the commercialliquid electrolyte,lead-ing 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 Prussian-blue cathode NaxFeyFe(CN)6-z·nH2O(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.
Yumei Wang;Guangsheng Huang;Li Lu;Zhongting Wang;Xiaoyu Xu;Sam Jin An Oh;Jianguo Sun;Feng Zheng;Xiao Lu;Chaohe Xu;Binggong Yan
College of Aerospace Engineering,Chongqing University,Chongqing 400044,People's Republic of China||National University of Singapore(Chongqing)Research Institute,Chongqing 401123,People's Republic of ChinaCollege of Materials Science and Engineering,Chongqing University,Chongqing 400044,People's Republic of ChinaNational University of Singapore(Chongqing)Research Institute,Chongqing 401123,People's Republic of China||Department of Mechanical Engineering,National University of Singapore,9 Engineering Drive 1,Singapore 117575,SingaporeDepartment of Mechanical Engineering,National University of Singapore,9 Engineering Drive 1,Singapore 117575,SingaporeCollege of Aerospace Engineering,Chongqing University,Chongqing 400044,People's Republic of ChinaFujian Key Laboratory of Special Energy Manufacturing,Xiamen Key Laboratory of Digital Vision Measurement,Huaqiao University,Xiamen 361021,People's Republic of China
Sodium-ion batteryNVP anodeAll-solid-stateCyclic stabilityFerroelectric
《纳微快报（英文）》 2024 (011)
704-717 / 14
This work was 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(cstc2021jcyj-msxmX0086),Chongqing Innovative Project for oversea-experi-ence researchers(cx2023037),and the Open Project Program of Fujian Key Laboratory of Special Energy Manufacturing.
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