The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2015
Filed:
Nov. 14, 2007
Akhila Kumar Sahu, Ganjam, IN;
Ganesh Selvarani, Salem, IN;
Sethuraman Pitchumani, Chennai, IN;
Parthasarathi Sridhar, Chennai, IN;
Ashok Kumar Shukla, Bangalore, IN;
Akhila Kumar Sahu, Ganjam, IN;
Ganesh Selvarani, Salem, IN;
Sethuraman Pitchumani, Chennai, IN;
Parthasarathi Sridhar, Chennai, IN;
Ashok Kumar Shukla, Bangalore, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The present invention provides a process for the preparation of sol-gel modified alternative Nafion-Silica composite membrane useful for polymer electrolyte fuel cell. The said composite membrane is made by embedding silica particles in perfluorosulfonic acid ionomer by a process that circumvents the use of added acid while using acidic characteristics of Nafion and polymerization reaction through a sol-gel route. The composite membrane has high affinity for water with capability to exchange protons. The approach may be used to manufacture polymer electrolyte membrane fuel cells operating at elevated temperatures under near-zero humidity.