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Energy Storage: Flow Batteries
Search All Applications in Energy Storage: Flow Batteries
Application US20190109347
Published 2019-04-11
Electrolyte Additives For Electrochemical Devices
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.
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- 1. A rechargeable electrochemical device, comprising:
a first electrode; a second electrode; an electrolyte coupled with said electrodes; and a first additive in communication with said electrolyte; wherein a first particular one electrode of said electrodes includes a first variable potential material; and wherein said first additive participates in a first predetermined side-reaction with a first single one of said electrodes degrading a charging efficiency of said first single one of said electrodes for a duration of said first predetermined side-reaction.
- 30. A method for reducing a relative state-of-charge imbalance of a set of electrodes of a rechargeable electrochemical device during a recharging process, the set of electrodes coupled to an electrolyte and wherein at least one electrode of the set of electrodes includes a first variable potential material, comprising:
a) performing the recharging process for a recharging duration which charges the electrodes at different relative rates to tend to produce a relative state-of-charge imbalance for the set of electrodes; and b) reducing said relative state-of-charge imbalance by interfering with a charging of at least one electrode of the set of electrodes.
