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1. (WO2018223091) HIGH CAPACITY CORROSION RESISTANT V-BASED METAL HYDRIDE ELECTRODES FOR RECHARGEABLE METAL HYDRIDE BATTERIES

Pub. No.:    WO/2018/223091    International Application No.:    PCT/US2018/035739
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: H01M 4/38
H01M 10/26
H01M 10/34
H01M 10/44
H01M 4/24
Applicants: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventors: YANG, Heng
WEADOCK, Nicholas J.
FULTZ, Brent T.
EDWARDS, Bryce W.
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.