Fuel cell interconnect with reduced voltage degradation over time

US9468736B2 · kind B2 · utility

Assignee

• BLOOM ENERGY CORPORATION · US

Inventors

• Daniel Darga · Pleasanton, US
• Tad Armstrong · Burlingame, US
• Vijay Srivatsan · Sunnyvale, US
• Harald Herchen · Los Altos, US
• Cheng-Yu Lin · Taipei, TW

Key dates

• Filing date: Nov 17, 2014
• Grant date: Oct 18, 2016
• Expiry date: Nov 17, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method of making an interconnect for a solid oxide fuel cell stack includes providing a chromium alloy interconnect and providing a nickel mesh in contact with a fuel side of the interconnect. Formation of a chromium oxide layer is reduced or avoided in locations between the nickel mesh and the fuel side of the interconnect. A Cr—Ni alloy or a Cr—Fe—Ni alloy is located at least in the fuel side of the interconnect under the nickel mesh.