Reversible aluminum ion storage mechanism in Ti-deficient rutile titanium dioxide anode for aqueous aluminum-ion batteries

Wu，Xibing1; Qin，Ning2; Wang，Feng1; Li，Zhihui1; Qin，Jiayao1; Huang，Guojing1; Wang，Dianhui1; Liu，Peng1; Yao，Qingrong1; Lu，Zhouguang2; Deng，Jianqiu1

2021-05-01

10.1016/j.ensm.2021.02.040

Energy Storage Materials   影响因子和分区

2405-8297

Aqueous aluminum-ion batteries (AIBs) are potential candidates for future large-scale energy storage devices owing to their advantages of high energy density, resource abundance, low cost, and environmental friendliness. However, the exploration of suitable electrode materials is one of the key challenges for the development of aqueous AIBs. To address this issue, a new Ti-deficient rutile titanium dioxide (Ti□OCl(OH)) was achieved via univalent ion doping and evaluated as an anode for aqueous AIBs. This material yields a reversible capacity of 143.1 mA h g at 0.5 A g. Even at 3 A g, an initial reversible charge capacity of 78.3 mA h g can be achieved and retains almost 82% after 110 cycles. The Al ion storage mechanism has been intensively investigated by ex-situ XRD, XPS, SEM, TEM and Raman techniques, indicating that Al ions can reversibly insert into Ti vacancies and lattice of the Ti□OCl(OH) without phase change, leading to much enhanced capacity as compared to the commercial rutile TiO. These results demonstrate that cationic defect engineering is an effective strategy to improve the electrochemical properties of electrode materials for aqueous AIBs.

Aluminum-ion batteries Aluminum-ion storage mechanism Electrode materials Ti-deficient rutile TiO2 Univalent ion doping

SCI ; EI

英语

通讯

WOS:000632703000009

20211010054221

Aluminum ; Anodes ; Electrochemical electrodes ; Ions ; Oxide minerals ; Secondary batteries ; Storage (materials)

Minerals:482.2 ; Aluminum:541.1 ; Storage:694.4 ; Secondary Batteries:702.1.2 ; Electron Tubes:714.1 ; Inorganic Compounds:804.2

2-s2.0-85102051695

Scopus

1.School of Materials Science and Engineering & Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wu，Xibing,Qin，Ning,Wang，Feng,et al. Reversible aluminum ion storage mechanism in Ti-deficient rutile titanium dioxide anode for aqueous aluminum-ion batteries[J]. Energy Storage Materials,2021,37:619-627.

Wu，Xibing.,Qin，Ning.,Wang，Feng.,Li，Zhihui.,Qin，Jiayao.,...&Deng，Jianqiu.(2021).Reversible aluminum ion storage mechanism in Ti-deficient rutile titanium dioxide anode for aqueous aluminum-ion batteries.Energy Storage Materials,37,619-627.

Wu，Xibing,et al."Reversible aluminum ion storage mechanism in Ti-deficient rutile titanium dioxide anode for aqueous aluminum-ion batteries".Energy Storage Materials 37(2021):619-627.