Acid stratification mitigation, electrolytes, devices, and methods related thereto
AssigneeAmtek Research International LLC
InventorsDaniel Wandera, Robert Waterhouse, Wyatt Self, Eric B. Hostetler, Richard W. Pekala
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Abstract
Methods of reducing acid stratification with an acid-soluble and acid-stable polymer with a high molecular weight are disclosed herein. Electrolytes and separators for an energy storage device are disclosed herein. The separator includes a coating containing an acid-soluble and acid-stable polymer with a high molecular weight. The electrolyte includes sulfuric acid and an acid-soluble and acid-stable polymer with a high molecular weight. Methods of making the separators disclosed herein and methods of making batteries are also disclosed herein.
Claims20
A method of reducing acid stratification in a battery, the method comprising:
- introducing an acid-soluble and acid-stable polymer into an aqueous electrolyte of a battery, to thereby increase the viscosity of the aqueous electrolyte;
- wherein the acid-soluble and acid-stable polymer comprises at least one of:
- polyvinyl pyrrolidone;
- polyacrylamide;
- copolymers comprising at least one of polyvinyl pyrrolidone or polyacrylamide;
- or
- mixtures comprising at least one of polyvinyl pyrrolidone or polyacrylamide.
An aqueous battery electrolyte comprising:
- aqueous sulfuric acid;
- and
- an acid-soluble and acid-stable polymer comprising at least one of:
- polyvinyl pyrrolidone;
- polyacrylamide;
- copolymers comprising at least one of polyvinyl pyrrolidone or polyacrylamide;
- or
- mixtures comprising at least one of polyvinyl pyrrolidone or polyacrylamide.
A battery comprising:
- a positive electrode;
- a negative electrode;
- a battery separator;
- and
- an aqueous electrolyte comprising:
- aqueous sulfuric acid;
- and
- an acid-soluble and acid-stable polymer comprising at least one of:
- polyvinyl pyrrolidone;
- polyacrylamide;
- copolymers comprising at least one of polyvinyl pyrrolidone or polyacrylamide;
- or
- mixtures comprising at least one of polyvinyl pyrrolidone or polyacrylamide.
Dependencies are inferred from the claim text.