Anatase TiO2 as a Na+-Storage Anode Active Material for Dual-Ion Batteries

被引：46
作者：
Wang, Xiaohong [1 ]
Qi, Li [1 ]
Wang, Hongyu [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 33期
基金：
中国国家自然科学基金;
关键词：
anatase TiO2; dual-ion batteries; kinetic behaviors; diffusion coefficient; Na+-storage anode; HIGH-CAPACITY ANODE; ANION INTERCALATION; ELECTROCHEMICAL PERFORMANCE; DIFFUSION-COEFFICIENT; CATHODE MATERIAL; SODIUM; CARBON; GRAPHITE; LI4TI5O12; ELECTRODE;
D O I：
10.1021/acsami.9b09703
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Anatase TiO2 used as the sodium-storage anode is coupled with a graphite cathode to construct dual-ion batteries. The batteries display wide voltage window (1.04.7 V), long cycling stability (98 mAh g(-1) after 1400 cycles at 500 mA g(-1)), and considerable rate performance (102 mAh g(-1) at 1500 mA g(-1)). Furthermore, the kinetic behaviors of Nat and PF6- ions are investigated through electrochemical impedance spectroscopy, the galvanostatic intermittent titration technique, and the potentiostatic intermittent titration technique. The corresponding apparent ion diffusion coefficient is calculated, and the results indicate that the transport of PF6- anions in the graphite cathode is swift.
引用
收藏
页码：30453 / 30459
页数：7
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