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US 9,287,589 B2Granted
Cosolvent electrolytes for electrochemical devices
AssigneeAlveo Energy, Inc.
InventorsColin Deane Wessells, Ali Firouzi, Shahrokh Motallebi, Sven Strohband
Life of this patent
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Abstract
A system and method for stabilizing electrodes against dissolution and/or hydrolysis including use of cosolvents in liquid electrolyte batteries for three purposes: the extension of the calendar and cycle life time of electrodes that are partially soluble in liquid electrolytes, the purpose of limiting the rate of electrolysis of water into hydrogen and oxygen as a side reaction during battery operation, and for the purpose of cost reduction.
Claims13
A rechargeable electrochemical cell, comprising:
- a positive electrode;
- a negative electrode;
- and
- an electrolyte having a total electrolyte volume V including a first quantity of water comprising a first fraction V1 of said total electrolyte volume V and including a second quantity of one or more organic cosolvents together comprising a second fraction V2 of said total electrolyte volume V;
- wherein V1/V>0.02;
- wherein V2>V1;
- wherein a particular one electrode of said electrodes includes a transition metal cyanide coordination compound (TMCCC) material;
- and
- wherein said electrolyte is a single phase.
6 more elements
Dependencies are inferred from the claim text.