Secondary battery containing zinc electrode with modified separator and method
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsDavid S. Poa, Neng-Ping Yao
Life of this patent
Estimating the term…
Abstract
A battery containing a zinc electrode with a porous separator between the anode and cathode. The separator is a microporous substrate carrying therewith an organic solvent of benzene, toluene or xylene with a tertiary organic amine therein, wherein the tertiary amine has three carbon chains each containing from six to eight carbon atoms. The separator reduces the rate of zinc dentrite growth in the separator during battery operation prolonging battery life by preventing short circuits. A method of making the separator is also disclosed.
Claims20
In a battery containing a zinc electrode having a porous separator between the anode and cathode, the improvement comprising providing the separator with an organic tertiary amine selected from the class consisting of triheptylamine;
- trihexylamine;
- tripentylamine;
- tri-n-octylamine, and tridecylamine to reduce the rate of zinc dentrite growth in the separator during battery operation.
A separator for a battery having a zinc electrode comprising a microporous substrate carrying therewith an organic solvent of benzene, toluene or xylene with a tertiary organic amine therein, wherein the tertiary amine has three carbon chains each containing from six to eight carbon atoms.
A method of treating a microporous separator in a battery having a zinc electrode to prevent zinc dentrite growth in the separator during battery operation, comprising providing a liquid tertiary amine having three carbon chains with each carbon chain containing from six to eight carbon atoms, and soaking the microporous separator in the liquid tertiary amine.
Dependencies are inferred from the claim text.