Enhanced Electrochemical Performance of CoB Amorphous Alloy through the Addition of Lanthanum
| Autor: | Shu Jun Qiu, Huan Zhi Zhang, Hai Liang Chu, Yi Lin Liao, Lixian Sun, Fen Xu, Cui Li Xiang, Wei Zhao, Yong Jin Zou |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Amorphous metal
Materials science Mechanical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences 0104 chemical sciences Chemical engineering chemistry Mechanics of Materials Lanthanum General Materials Science 0210 nano-technology |
| Zdroj: | Materials Science Forum. 914:102-108 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.914.102 |
| Popis: | In order to investigate the effect of lanthanum on the electrochemical properties of CoB amorphous alloy, Co-Lax-B alloys (x = 0, 0.1, 0.5, and 1) were prepared by chemical reduction method. As negative electrodes in alkaline rechargeable batteries, Co-Lax-B alloys exhibit superior electrochemical properties. For Co-La0.1-B alloy, at the discharge current density of 100 mA/g, the initial discharge capacity is 830.6 mAh/g and the discharge capacity has remained around 317.3 mAh/g even after 100 cycles. Moreover, the high-rate discharge ability (HRD) of Co-La0.1-B alloy electrode at the discharge current density of 300 mA/g, 600 mA/g, and 900 mA/g is 98.16%, 95.17%, and 91.86%, respectively. The anodic polarization (AP) and the electrochemical impedance spectra (EIS) measurements indicate that the kinetics of electrochemical performance of the alloys is remarkably improved with the addition of lanthanum. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|