Battery negative electrode, battery, and manufacturing method of battery negative electrode
AssigneesThe Japan Steel Works, Ltd., Exergy Power Systems, Inc.
InventorsTomohiro UENO, Kazuya KUBO, Hiroshi KAWANO, Toshio TAKAHASHI, Kaduo TSUTSUMI
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Abstract
A battery negative electrode includes a hydrogen storage alloy as a negative electrode active material, wherein the hydrogen storage alloy has a mean volume diameter within a range from 4 μm to 12 μm, and is disposed to be capable of being in contact with hydrogen in a hydrogen containing part in which hydrogen is contained.
Claims12
A battery negative electrode comprising a hydrogen storage alloy as a negative electrode active material, wherein the hydrogen storage alloy has a mean volume diameter within a range from 4 μm to 12 μm, and is disposed to be capable of being in contact with hydrogen in a hydrogen containing part in which hydrogen is contained.
A manufacturing method of a battery negative electrode, the method comprising:
- manufacturing a hydrogen storage alloy fine powder by crushing a hydrogen storage alloy to have a mean volume diameter within a range from 4 μm to 12 μm;
- removing a surface layer containing an oxide coating film by performing a surface treatment on the hydrogen storage alloy fine powder;
- and
- supporting, as a negative electrode active material, the hydrogen storage alloy fine powder after the surface treatment on a supporting body to dispose it to be capable of being in contact with hydrogen.
Dependencies are inferred from the claim text.