Investigation on the electrochemical behaviours of Mg2-xCrxNi negative electrode
来源期刊：Rare Metals2003年第2期
论文作者：XUE Jianshe, WANG Lijun, LUO Yuanhui, LI Guoxun, DU Jun, HU Guangyong, and WANG ChaoqunGeneral Research Institute for Non-ferrous Metals, Beijing , China (Received --)
文章页码：144 - 149
摘 要：<正> A series of Mg2-xCrxNi alloy powder has been produced by combination of solid-state diffusion with mechanical grinding （MG）. X-ray diffraction patterns show that the alloy powders have an amorphous structure and great increase in the specific surface. Electrochemical detection results indicate that the partial substitution of Mg by Cr in Mg2Ni alloy improves the cycle life of this alloy greatly, which gets up to 100 cycles at 200 mA/g mass discharge current, keeping its mass discharge capacity over 200 mA.h/g. In the meanwhile, partial replacement of Mg by Cr also increases the mass discharge capacity compared with Mg2Ni alloy. With the increasing of mass discharge current and content of Cr in Mg2-xCrxNi, the cycle life of the alloys are increased and the decay of mass discharge capacity slows down.
XUE Jianshe, WANG Lijun, LUO Yuanhui, LI Guoxun, DU Jun, HU Guangyong, and WANG ChaoqunGeneral Research Institute for Non-ferrous Metals, Beijing 100088, China (Received 2002-09-01)
摘 要：<正> A series of Mg2-xCrxNi alloy powder has been produced by combination of solid-state diffusion with mechanical grinding （MG）. X-ray diffraction patterns show that the alloy powders have an amorphous structure and great increase in the specific surface. Electrochemical detection results indicate that the partial substitution of Mg by Cr in Mg2Ni alloy improves the cycle life of this alloy greatly, which gets up to 100 cycles at 200 mA/g mass discharge current, keeping its mass discharge capacity over 200 mA.h/g. In the meanwhile, partial replacement of Mg by Cr also increases the mass discharge capacity compared with Mg2Ni alloy. With the increasing of mass discharge current and content of Cr in Mg2-xCrxNi, the cycle life of the alloys are increased and the decay of mass discharge capacity slows down.
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