(19)

(11)

EP 2 588 647 A1

(12)

(43) Date of publication: 08.05.2013 Bulletin 2013/19 (21) Application number: 11743389.6 (22) Date of filing: 01.07.2011

(51) International Patent Classification (IPC):  C25B 3/04(2006.01) G01N 33/00(2006.01) C25B 3/00(2006.01) H01M 4/92(2006.01) B01J 31/02(2006.01) C25B 1/00(2006.01) H01M 4/90(2006.01) H01M 4/86(2006.01) (86) International application number: PCT/US2011/042809 (87) International publication number: WO 2012/006240 (12.01.2012 Gazette 2012/02)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 30.06.2011 US 201113174365 09.05.2011 US 201161484072 P 25.03.2011 WO PCT/US2011/003098 04.07.2010 US 830338 (71) Applicant: Dioxide Materials Inc. Champaign, IL 61820 (US)	(72) Inventor: MASEL, Richard I. Champaign Illinois 61822 (US) (74) Representative: Beyer, Andreas  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 81541 München 81541 München (DE)