TY - JOUR
T1 - Electrochemical charge and discharge properties for the formation of magnesium and aluminum hydrides
AU - Hanada, Nobuko
AU - Kamura, Akito
AU - Suzuki, Hiroshi
AU - Takai, Kenichi
AU - Ichikawa, Takayuki
AU - Kojima, Yoshitsugu
N1 - Funding Information:
This work has been partially supported by New Energy and Industrial Technology Development Organization (NEDO) under “Advanced Fundamental Research Project on Hydrogen Storage Materials”. The authors gratefully acknowledge Dr. Satoshi Hino and Mr. Taisuke Ono of Hiroshima University, Japan, for providing the aluminum hydride powder.
PY - 2011/9
Y1 - 2011/9
N2 - The electrochemical properties of Mg + 2LiH and Al + 3LiH are investigated by applying a Li-ion insertion and extraction system to form magnesium and aluminum hydrides. For MgH2 formation, the voltage-composition (VC) curve for Mg + 2LiH during charging exhibits a plateau voltage at 0.58 V, then the final composition is obtained with 1.05 mol Li extraction at 3.0 V. After the charging, the MgH2 phase is observed by XRD measurement. Therefore, MgH2 is produced from Mg and LiH by electrochemical charging. With respect to AlH3 formation, Al + 3LiH is charged at a plateau voltage of 0.81 V, which corresponds to the reaction of Al with hydrogen in LiH to form AlH3. And the final composition at 3.0 V is 0.6 mol Li. In the XRD profile after charging, the AlH3 phase is not detected.
AB - The electrochemical properties of Mg + 2LiH and Al + 3LiH are investigated by applying a Li-ion insertion and extraction system to form magnesium and aluminum hydrides. For MgH2 formation, the voltage-composition (VC) curve for Mg + 2LiH during charging exhibits a plateau voltage at 0.58 V, then the final composition is obtained with 1.05 mol Li extraction at 3.0 V. After the charging, the MgH2 phase is observed by XRD measurement. Therefore, MgH2 is produced from Mg and LiH by electrochemical charging. With respect to AlH3 formation, Al + 3LiH is charged at a plateau voltage of 0.81 V, which corresponds to the reaction of Al with hydrogen in LiH to form AlH3. And the final composition at 3.0 V is 0.6 mol Li. In the XRD profile after charging, the AlH3 phase is not detected.
KW - Electrochemical reactions
KW - Hydrogen absorbing materials
KW - Metal hydrides
KW - X-ray diffraction
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U2 - 10.1016/j.jallcom.2010.10.069
DO - 10.1016/j.jallcom.2010.10.069
M3 - Article
AN - SCOPUS:80052801558
SN - 0925-8388
VL - 509
SP - S584-S587
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
IS - SUPPL. 2
ER -