Electrochemical Driven Phase Segregation Enabled Dual-Ion Removal Battery Deionization Electrode

Wei，Wenfei; Feng，Xuezhen; Wang，Ranhao; Zheng，Renji; Yang，Dazhong; Chen，Hong

2021-06-09

10.1021/acs.nanolett.1c01487

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

Battery deionization (BDI) offers a powerful platform for integrating water treatment and energy conversion. Exploring novel BDI electrode materials with high energy storage capacity and high efficiency for both cations and anions removal is the key to advancing the BDI technique. Herein, we report the first BDI electrode material capable of simultaneously removing Cl- (58.4 mg g-1) and Na+ (8.7 mg g-1) in water with a reversible capacity of 160 mAh g-1. In situ powder X-ray diffraction (PXRD) unravels that the dual-ion removal capability is attributed to a novel reversible electrochemical driven phase segregation reaction mechanism between NaBi3O4Cl2 and the in situ formed metallic Bi. The unique dual-ion storage capability demonstrated with the NaBi3O4Cl2 electrode indicates that exploring electrochemical reversible phase segregation electrode material holds great promise for advancing the BDI electrode for future desalination techniques and aqueous rechargeable battery systems.

Battery Deionization Dual-ion Phase segregation Seawater

SCI ; EI

英语

NI期刊

第一 ; 通讯

WOS:000662078500042

20212610546880

Bismuth compounds ; Bismuth metallography ; Chlorine compounds ; Desalination ; Energy conversion ; Energy storage ; Ions ; Phase separation ; Secondary batteries ; Segregation (metallography) ; Sodium compounds ; Water treatment

Water Treatment Techniques:445.1 ; Energy Conversion Issues:525.5 ; Energy Storage:525.7 ; Metallography:531.2 ; Thermodynamics:641.1 ; Secondary Batteries:702.1.2

MATERIALS SCIENCE

2-s2.0-85108021149

Scopus

Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,State Environ. Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wei，Wenfei,Feng，Xuezhen,Wang，Ranhao,et al. Electrochemical Driven Phase Segregation Enabled Dual-Ion Removal Battery Deionization Electrode[J]. NANO LETTERS,2021,21(11):4830-4837.

Wei，Wenfei,Feng，Xuezhen,Wang，Ranhao,Zheng，Renji,Yang，Dazhong,&Chen，Hong.(2021).Electrochemical Driven Phase Segregation Enabled Dual-Ion Removal Battery Deionization Electrode.NANO LETTERS,21(11),4830-4837.

Wei，Wenfei,et al."Electrochemical Driven Phase Segregation Enabled Dual-Ion Removal Battery Deionization Electrode".NANO LETTERS 21.11(2021):4830-4837.