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EP0360942B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Conductive ceramic support for active material in a lead-acid storage battery

Assignee: Atraverda Ltd
•
Filing: 1988-11-04
•
Granted: 1993-07-21
•
Expires: 2008-11-04
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Abstract

Abstract A conductive ceramic support (16) for the active material in a lead-acid storage battery is disclosed. The support comprises substoichiometric titanium dioxide of the formula TiOx, where x is a number from 1.55 to 1.95. The support is in the form of a plate having a honeycomb structure (15 or 17) of regular and repeating cells, creating voids which hold the active material in the battery. An electrode can comprise the conductive ceramic support (16) with the honeycomb structure (15) on one face pasted with a lead-oxide/sulfuric acid paste and a second honeycomb structure (17) on its opposite face pasted with spongy lead. This electrode can thus form electrically-connected respective positive and negative plates of adjacent cells of a battery.

Inventors

  • 👤 Robert L. Clarke
  • 👤 Jimmy Fong Cheng

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 04:21
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/18; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B38/00; C04B38/0006; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5025; C04B41/5027; C04B41/80; C04B41/81; C04B41/85; C04B41/87; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/68; H01M4/70; H01M4/72; H01M4/73; C04B2111/00; C04B2111/00474; C04B2111/00844; C04B2111/00853; C04B2235/00; C04B2235/65; C04B2235/652; C04B2235/658; C04B2235/6582; C04B2235/70; C04B2235/74; C04B2235/79; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 74 words
A conductive ceramic support for active material in a lead-acid storage battery, said conductive ceramic support comprising substoichiometric titanium oxide of the formula, TiO x , where x is a number from 1.55 to 1.95, and being in the form of a plate having two substantially flat surfaces and a honeycomb structure with regular and repeating cells to create voids in said plate, said voids communicating through each of said two substantially flat surfaces.
Claim 2
Dependent Claim 42 words
A conductive ceramic support according to claim 1, wherein said conductive ceramic support is prepared by extruding a green titanium dioxide composite to form said honeycomb structure and thereafter vitrifying and reducing said green titanium dioxide to form said substoichiometric titanium oxide.
Claim 3
Dependent Claim 17 words
A conductive ceramic support according to claim 1 wherein said substoichiometric titanium oxide is coated with lead.
Claim 4
Dependent Claim 110 words
An electrode in a lead-acid storage battery comprising: a) a conductive ceramic support for active material, said conductive ceramic support being made from substoichiometric titanium oxide of the formula, TiO x , where x is a number from 1.55 to 1.95; and b) an active material deposited on said conductive ceramic support, said active material being formed from a paste comprising lead oxide, sulfuric acid and water wherein said conductive ceramic support is in the form of a plate having two substantially flat surfaces and a honeycomb structure with regular and repeating cells to create voids in said plate, said voids communicating through each of said two substantially flat surfaces.
Claim 5
Dependent Claim 22 words
An electrode according to claim 4, wherein said active material is lead dioxide, and the electrode is used as a positive electrode.
Claim 6
Dependent Claim 22 words
An electrode according to claim 4, wherein said active material is spongy lead, and the electrode is used as a negative electrode.

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