US 9,812,713 B2
Rechargeable battery with wafer current collector and assembly method
Collin Mui, Mountain View, CA (US); and Daniel Moomaw, San Jose, CA (US)
Assigned to Gridtential Energy, Inc., Santa Clara, CA (US)
Filed by Gridtential Energy, Inc., Santa Clara, CA (US)
Filed on May 23, 2014, as Appl. No. 14/286,523.
Claims priority of provisional application 61/826,831, filed on May 23, 2013.
Prior Publication US 2014/0349172 A1, Nov. 27, 2014
Int. Cl. H01M 4/66 (2006.01); H01M 4/14 (2006.01); H01M 4/68 (2006.01); H01L 21/48 (2006.01); H01M 10/04 (2006.01); H01M 10/18 (2006.01)
CPC H01M 4/661 (2013.01) [H01L 21/4875 (2013.01); H01M 4/14 (2013.01); H01M 4/66 (2013.01); H01M 4/68 (2013.01); H01M 10/0418 (2013.01); H01M 10/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An apparatus, comprising a first bipolar battery plate including:
a conductive silicon wafer;
a first mechanical support located on a first side of the conductive silicon wafer; and
a first active material adhered to the first mechanical support and the first side of the conductive silicon wafer, the first active material having a first polarity;
a second mechanical support located on a second side of the conductive silicon wafer opposite the first side; and
a second active material adhered to the second mechanical support and the second side of the conductive silicon wafer, the second active material having a polarity opposite the first active material;
wherein the conductive silicon wafer comprises a first silicide between the first active material and the bulk of the conductive silicon wafer.