Heterogeneous NASICON-Type Composite as Low-Cost, High-Performance Cathode for Sodium-Ion Batteries

Jin-Zhi Guo; Hong-Xia Zhang; Zhen-Yi GuMiao DuHong-Yan LueXin-Xin ZhaoJia-Lin YangWen-Hao LiShuwen KangWeimin ZouXing-Long Wu

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Heterogeneous NASICON-Type Composite as Low-Cost, High-Performance Cathode for Sodium-Ion Batteries

机译：Heterogeneous NASICON-Type Composite as Low-Cost, High-Performance Cathode for Sodium-Ion Batteries

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摘要

As promising cathode for sodium-ion batteries, Na+ Superionic Conductor(NASICON)-type materials have attracted attention owing to theirexcellent structural stability, superior ionic conductivity, and small volumeexpansion. However, the vanadium-based NASICON-type cathode with thebiotoxicity and exorbitant price of V element and the iron-based cathode withlow mean working voltage as well as the intrinsic poor electronic conductivityof polyanionic compounds hinder their practical applications. Herein, a doublecarbon-layer decorated heterogeneous composite, Na_3V_2(PO_4)_3-Na_3Fe_2(PO_4)(P_2O_7) (NVFPP/C/G), is successfully prepared for addressing these limitations.Due to their synergistic effect, NVFPP/C/G exhibits excellent electrochemicalperformance in half-cell system and superior full-cell performancewhen matched with hard carbon anode. Furthermore, the phase composition,electrode kinetics, and phase transition are confirmed by combined analyses ofslow scanning power X-ray diffraction, high-resolution transmission electronmicroscopy, cyclic voltammetry with various scan rates, galvanostatic intermittenttitration technique, ex situ X-ray photoelectron spectra, and in situ X-raydiffraction. This study portends a promising strategy to utilize composite structureengineering for developing advanced polyanionic cathodes.

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来源
《Advanced functional materials》 |2022年第51期|2209482.1-2209482.8|共8页
作者
Jin-Zhi Guo; Hong-Xia Zhang; Zhen-Yi GuMiao DuHong-Yan LueXin-Xin ZhaoJia-Lin YangWen-Hao LiShuwen KangWeimin ZouXing-Long Wu;
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作者单位

MOE Key Laboratory for UV Light-Emitting Materials and TechnologyNortheast Normal UniversityChangchun, Jilin 130024, P. R. China;

Faculty of ChemistryNortheast Normal UniversityChangchun, Jilin 130024, P. R. China;

Faculty of ChemistryNortheast Normal UniversityChangchun, Jilin 130024, P. R. China;

Transimage Sodium-Ion Battery Technology138 Xingqu Rd, Chengnan Economic DistrictGaoyou, Jiangsu 225699, P. R. ChinaTransimage Sodium-Ion Battery Technology138 Xingqu Rd, Chengnan Economic DistrictGaoyou, Jiangsu 225699, P. R. ChinaMOE Key Laboratory for UV Light-Emitting Materials and TechnologyNortheast Normal UniversityChangchun, Jilin 130024, P. R. China;

Faculty of ChemistryNortheast Normal UniversityChangchun, Jilin 130024, P. R. China;

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正文语种英语
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full cells; heterogeneous materials; NASICON-type cathodes; sodium-ion batteries; structural evolutions;

Heterogeneous NASICON-Type Composite as Low-Cost, High-Performance Cathode for Sodium-Ion Batteries

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