Modified electrochemical hydrogen storage alloy having increased capacity, rate capability and catalytic activity

US6740448B2 · kind B2 · utility

Assignee

• Ovonic Battery Company, Inc. · US

Inventors

• Michael A. Fetcenko · Rochester, US
• Kwo Young · Troy, US
• Stanford R. Ovshinsky · Bloomfield Hills, US
• Benjamin Reichman · Beverly Hills, US
• John Koch · Beverly Hills, US
• William Mays · Farmington Hills, US

Key dates

• Filing date: May 16, 2001
• Grant date: May 25, 2004
• Expiry date: Jun 22, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A modified Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy which has at least one of the following characteristics: 1) an increased charge/discharge rate capability over that the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; 2) a formation cycling requirement which is reduced to one tenth that of the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; or 3) an oxide surface layer having a higher electrochemical hydrogen storage catalytic activity than the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy. The electrochemical hydrogen storage alloy includes an oxide surface having metallic particles dispersed therein, wherein the particles are from 10-40 Angstroms in size.