Title: High capacity corrosion resistant V-based metal hydride electrodes for rechargeable metal hydride batteries

Abstract

In an aspect, an electrochemical cell comprises: a positive electrode; a negative electrode, said negative electrode having an alloy having a composition comprising V; and an electrolyte; wherein an additive is provided in said electrolyte to form primary vanadate ions upon dissociation of said additive in said electrolyte; and wherein the electrochemical cell is a metal hydride battery. In some embodiments of this aspect, the alloy is configured to sorb hydrogen during charging of said electrochemical cell and desorb hydrogen during discharging of said electrochemical cell. In some embodiments of this aspect, the electrolyte has a pH selected from the range of 13 to 15.

Inventors:

Yang, Heng; Weadock, Nicholas J.; Fultz, Brent T.; Edwards, Bryce W.

Issue Date:

Tue Feb 25 00:00:00 EST 2020

Research Org.:

California Institute of Technology (CalTech), Pasadena, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1632593

Patent Number(s):

10573932

Application Number:

15/996,380

Assignee:

California Institute of Technology (Pasadena, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

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B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

B22F1/00 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties {
B22F2998/10 - Processes characterised by the sequence of their steps
B22F7/08 - with one or more parts not made from powder {
B22F9/04 - starting from solid material, e.g. by crushing, grinding or milling

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C1/02 - by melting {
C22C1/045 - {Alloys based on refractory metals}
C22C2200/00 - Crystalline structure
C22C27/025 - {alloys based on vanadium}
C22C32/0026 - {Matrix based on Ni, Co, Cr or alloys thereof
C22C32/0031 - {Matrix based on refractory metals, W, Mo, Nb, Hf, Ta, Zr, Ti, V or alloys thereof}

C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS

C25B11/04 - characterised by the material

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/345 - {Gastight metal hydride accumulators}
H01M10/44 - Methods for charging or discharging
H01M2300/0014 - Alkaline electrolytes
H01M4/242 - {Hydrogen storage electrodes}
H01M4/32 - Nickel oxide or hydroxide electrodes
H01M4/383 - {Hydrogen absorbing alloys}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage

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DOE Contract Number:  

AR0000366; SC0001057

Resource Type:

Patent

Resource Relation:

Patent File Date: 06/01/2018

Country of Publication:

United States

Language:

English

Subject:

25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY