The electrochemical performance of Ml0.7 Mm0.3 Ni3.7 Co0.7 Mn0.4 Al0.2 nanocrystalline hydrogen storage alloy as metal hydride electrode

Autor:	Lin Gen-Wen, Zhang Jinlong, Xiong Yi-Hui, Ge Jian-Sheng, Fang Shoushi
Rok vydání:	2002
Předmět:	Materials science Hydride General Mathematics Metallurgy Alloy General Engineering engineering.material Electrochemistry Nanocrystalline material Metal Hydrogen storage Chemical engineering visual_art Electrode visual_art.visual_art_medium engineering Crystallite
Zdroj:	Journal of Shanghai University (English Edition). 6:345-348
ISSN:	1863-236X 1007-6417
DOI:	10.1007/s11741-002-0063-7
Popis:	Ml0.7Mm0.3Ni3.7Co0.7Mn0.4Al0.2 nanocrystalline hydrogen storage materials are prepared by melt-spinning (MS). X-ray diffraction is used for the measurement of the nanocrystalline size. Compared to the electrode of polycrystalline alloys, the property of activation MH (metal hydride) electrode of the alloys with nanometer scale became worse and the initial discharge capacity decreased. It may be ascribed to the decrease of the total amount of rare earth metals and the increase of oxygen on the surface from the analysis of components of the alloys. After heat-treatment, the electrochemical performance of MH electrode of as-spun alloys could be improved, which could be attributed to the alleviation of the lattice strain.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2c67494f4f572bf06297fd0a8cef0b07 https://doi.org/10.1007/s11741-002-0063-7 Zobrazit plný text záznamu Full text from SpringerLink