# US 4,376,093 A · Low antimony alloy

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- Number: US 4,376,093 A
- Document ID: US4376093A
- Status: Granted
- Kind: A
- Application number: 06/270,134
- Filed: 1981-06-03
- Granted: 1983-03-08
- Earliest claimed: 1981-06-03
- Assignees: RSR Limited
- Inventors: Raymond D. Prengaman
- Web page: https://patentgrep.com/patent/US4376093A

## CPC

- C22C 11/10: with tin
- H01M 4/685: {Lead alloys}
- Y02E 60/10: Energy storage using batteries
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Low antimony lead alloys suitable for use as grid material in maintenance-free high capacity lead acid batteries are disclosed. The alloys comprise 0.6 to 1.1 weight percent antimony, 0.06 to 0.25 weight percent arsenic, 0.1 to 0.4 weight percent tin, 0.06 to 0.11 weight percent copper, and the balance lead. A preferred alloy contains 0.8 weight percent antimony, 0.15 weight percent arsenic, 0.25 weight percent tin and 0.08 weight percent copper.

## Claims

### Claim 1

A lead alloy for use in lead-acid batteries consisting essentially of 0.6 to 1.1 weight percent antimony, 0.06 to 0.25 weight percent arsenic, 0.1 to 0.4 weight percent tin, 0.06 to 0.11 weight percent copper, and the balance lead.

### Claim 2 (depends on 1)

The alloy of claim 1 containing 0.8 weight percent antimony, 0.15 weight percent arsenic, 0.25 weight percent tin and 0.08 weight percent copper.