TY - JOUR
KW - Lithium batteries
KW - Anode materials
KW - Magnesium silicide
KW - Mg2Si
AU - Gregory A Roberts
AU - Elton J Cairns
AU - Jeffrey A Reimer
AB - <p>Mg<sub>2</sub>Si was synthesized by mechanically activated annealing and evaluated as a negative electrode material. A maximum discharge capacity of 830&nbsp;mAh/g was observed by cycling over a wide voltage window of 5–650&nbsp;mV versus Li, but capacity fade was rapid. Cycling over the range 50–225&nbsp;mV versus Li produced a stable discharge capacity of approximately 100&nbsp;mAh/g. X-ray diffraction (XRD) experiments showed that lithium insertion converts Mg<sub>2</sub>Si into Li<sub>2</sub>MgSi after lithium intercalation into Mg<sub>2</sub>Si. Electrochemical evidence of Li–Si reactions indicated that the Li<sub>2</sub>MgSi structure can be converted to binary lithium alloys with extensive charging.</p>
BT - Journal of Power Sources
DA - 08/2002
DO - 10.1016/S0378-7753(02)00207-0
IS - 2
N2 - <p>Mg<sub>2</sub>Si was synthesized by mechanically activated annealing and evaluated as a negative electrode material. A maximum discharge capacity of 830&nbsp;mAh/g was observed by cycling over a wide voltage window of 5–650&nbsp;mV versus Li, but capacity fade was rapid. Cycling over the range 50–225&nbsp;mV versus Li produced a stable discharge capacity of approximately 100&nbsp;mAh/g. X-ray diffraction (XRD) experiments showed that lithium insertion converts Mg<sub>2</sub>Si into Li<sub>2</sub>MgSi after lithium intercalation into Mg<sub>2</sub>Si. Electrochemical evidence of Li–Si reactions indicated that the Li<sub>2</sub>MgSi structure can be converted to binary lithium alloys with extensive charging.</p>
PY - 2002
SP - 424
EP - 429
ST - Journal of Power Sources
T2 - Journal of Power Sources
TI - Magnesium silicide as a negative electrode material for lithium-ion batteries
VL - 110
SN - 03787753
ER -