The effects of carbon coating on the electrochemical performance of Zn-Al layer double oxides in nickel-zinc secondary cells

被引：15

作者：

Zeng, Xiao ^{[1
,2
]}

Yang, Zhanhong ^{[1
]}

Long, Jun ^{[1
]}

Chen, Linlin ^{[1
]}

Qin, Haigang ^{[1
]}

Fan, Maokui ^{[2
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Publ Secur Fire Forces Coll, Kunming 650208, Yunnan, Peoples R China

来源：

IONICS | 2019年 / 25卷 / 03期

基金：

中国国家自然科学基金; 国家教育部博士点专项基金资助;

关键词：

Carbon coating; Zinc-aluminum layer double oxides; Zinc electrode; Nickel-zinc secondary cells; Electrochemical performance; DOUBLE HYDROXIDE NANOSHEETS; ANODE MATERIAL; HYDROTHERMAL CARBONIZATION; ANION-EXCHANGE; SHAPE CHANGE; HYDROTALCITE; NANOCOMPOSITES; ELECTRODES; COMPOSITE;

D O I：

10.1007/s11581-018-2642-z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon-coated Zn-Al layer double oxide (Zn-Al-LDOs) is synthesized by hydrothermal-calcined method and investigated as an anode material for the Ni-Zn cells. The as-obtained products are characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), and X-ray diffraction (XRD), which prove that carbon-coated Zn-Al-LDOs are well-crystallized and carbon formed on the surface of Zn-Al-LDOs is amorphous. The electrochemical performances of the carbon-coated Zn-Al-LDOs electrode with different carbon content and pure Zn-Al-LDOs electrode are investigated by the cyclic voltammograms (CV), AC electrochemical impedance spectroscopy (EIS), Tafel plot (TAFEL), and galvanostatic charge-discharge (GCD) measurements. Compared with the pure Zn-Al-LDOs electrode, the carbon-coated Zn-Al-LDOs electrode shows better reversibility, higher specific capacity, and more excellent cycling performance.

引用

页码：1223 / 1233

页数：11