Electrolyte additive for improved battery performance

Patent · Tue Apr 04 04:00:00 EDT 1989

OSTI ID:5959922

Bellows, R J; Kantner, E

An electrochemical cell having a metal bromine couple is described. It consists of: an electrode structure on which the metal of the couple is deposited during charging of the cell; a counterelectrode structure at which to generate cathodic bromine during charging of the cell; a microporous separator between the electrode and counterelectrode structure; an aqueous electrolyte of a metal bromide, the metal of the bromide being the same as the metal of the couple and including a water soluble complexing agent capable of forming a water immiscible complex with bromine; and an additive capable of decreasing the wettability of the microporous separator by the immiscible bromine complex formed during charging of the cell, the additive being present in amount sufficient to produce a measurable increase in the coulombic efficiency of the cell.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4818642
• OSTI ID: 5959922
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ADDITIVES
AQUEOUS SOLUTIONS
BATTERY SEPARATORS
BROMINE
CHEMICAL COMPOSITION
DISPERSIONS
EFFICIENCY
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELEMENTS
ENERGY EFFICIENCY
HALOGENS
MIXTURES
NONMETALS
SOLUTIONS