Discharge and corrosion behaviour of AP65 magnesium anode plates with different rolling reductions
| Autor: | Naiguang Wang, Mu Yangchang, Zhicong Shi, Qi Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Magnesium 020209 energy General Chemical Engineering Metallurgy chemistry.chemical_element 02 engineering and technology General Chemistry Microstructure Corrosion Anode Matrix (geology) chemistry 0202 electrical engineering electronic engineering information engineering Nanometre Seawater Dissolution |
| Zdroj: | RSC Advances. 7:53226-53235 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra10652a |
| Popis: | AP65 with strong discharge activity is an attractive magnesium anode used for high-power seawater activated batteries. Herein, we adopt multi-pass rolling to tailor the microstructure of AP65 and systematically study the effect of rolling reduction on its discharge and corrosion behaviour. The results indicate that 63% reduction uniformly refines the grains and favours the formation of nanometer sub-grains that distribute homogeneously in the magnesium matrix, hence promoting the active dissolution of the AP65 plate at 180 mA cm−2 and leading to its more negative discharge potential along with higher anodic efficiency compared with other samples. Furthermore, the microstructure features corresponding to different rolling reductions and their impacts on the electrochemical response of AP65 are also analyzed. |
| Databáze: | OpenAIRE |
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