Mesoporous silica as a membrane for ultra-thin implantable direct glucose fuel cells

Tushar Sharma, Ye Hu, Meryl Stoller, Marc Feldman, Rodney S. Ruoff, Mauro Ferrari, Xiaojing Zhang

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The design, fabrication and characterization of an inorganic catalyst based direct glucose fuel cell using mesoporous silica coating as a functional membrane is reported. The desired use of mesoporous silica based direct glucose fuel cell is for a blood vessel implantable device. Blood vessel implantable direct glucose fuel cells have access to higher continuous glucose concentrations. However, reduction in the implant thickness is required for application in the venous system as part of a stent. We report development of an implantable device with a platinum thin-film (thickness: 25 nm) deposited on silicon substrate (500 μm) to serve as the anode, and graphene pressed on a stainless steel mesh (175 μm) to serve as the cathode. Control experiments involved the use of a surfactant-coated polypropylene membrane (50 μm) with activated carbon (198 μm) electrodes. We demonstrate that a mesoporous silica thin film (270 nm) is capable of replacing the conventional polymer based membranes with an improvement in the power generated over conventional direct glucose fuel cells.

Original languageEnglish (US)
Pages (from-to)2460-2465
Number of pages6
JournalLab on a Chip
Volume11
Issue number14
DOIs
StatePublished - Jul 21 2011

ASJC Scopus subject areas

  • Bioengineering
  • Biochemistry
  • Chemistry(all)
  • Biomedical Engineering

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