Method of preparing a battery paste containing fibrous polyfluoroethylene for use in the plates of a lead-acid storage battery
US4315829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1978 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Jan 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of preparing a battery paste for a lead-acid storage battery comprising: (a) mixing a water dispersion of polyfluoroethylene with lead material, (b) adding an aqueous solution of sulfuric acid to the lead material-dispersion mix and mixing to form a paste having fibrillation developed therein, (c) controlling the amount of fibrillation developed in the paste, and (d) controlling the paste density for use in a battery plate. The method provides an improved paste which permits substantial reduction in plate weights and density and loss of active material in the grid structure due to plate shedding over a conventional lead-acid paste. The saving in active material ranges from 10 to 30% over a conventional lead-acid paste without reduction in battery performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.