Title:
Mg-BASED ALLOY NEGATIVE ELECTRODE MATERIAL, Mg NEGATIVE ELECTRODE MATERIAL, AND Mg SECONDARY BATTERY USING THESE
Document Type and Number:
Japanese Patent JP2023026887
Kind Code:
A
Abstract:
To provide a Mg-based alloy negative electrode material having excellent electrochemical properties.SOLUTION: In a Mg-based alloy negative electrode material with excellent electrochemical properties, the thickness of a Mg-based alloy with addition of one of the elements Al, Ag, Bi, Ca, Sn, Mn, Li, RE (rare earth), and Zn that form a solid solution in Mg, or a Mg-based alloy in which impurity elements are unavoidably present is 7 μm or more and 0.5 mm or less, there is no residual stress in the Mg matrix, the average crystal grain size of the Mg matrix is 5 μm or more, and the Mg-based alloy negative electrode material shows a current value of ±10 mAcm-2 or more when the overvoltage in the electrochemical deposition-dissolution test is 30 mV or less and the electrode potential in the deposition-dissolution test is ±0.5 V in a cycle measurement test for 50 times or more.SELECTED DRAWING: Figure 4
Inventors:
SOMEKAWA HIDETOSHI
MANDAI TOSHIHIKO
MANDAI TOSHIHIKO
Application Number:
JP2021132315A
Publication Date:
March 01, 2023
Filing Date:
August 16, 2021
Export Citation:
Assignee:
NAT INST MATERIALS SCIENCE
International Classes:
H01M4/134; C22C23/00; C22C23/02; C22C23/04; C22C23/06; C22C24/00; H01M4/46; H01M10/054