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HTC Derived CARBON from Waste Biomass as Renewable Pt Support for Fuel Cell Application: Role of Carbon Activation

Schonvogel, Dana and Nowotny, Manuel and Woriescheck, Tim and Multhaupt, Hendrik and Wagner, Peter and Dyck, Alexander and Agert, Carsten and Wark, Michael (2019) HTC Derived CARBON from Waste Biomass as Renewable Pt Support for Fuel Cell Application: Role of Carbon Activation. Energy Technology, 7 (11), p. 1900344. Wiley. doi: 10.1002/ente.201900344. ISSN 2194-4288.

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Official URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.201900344


Pt catalysts in proton exchange membrane fuel cells (PEMFC) typically use carbon blacks like Vulcan® based on fossil sources. Thus, an important research task is using sustainable supports in PEMFCs. Hydrothermal carbonization (HTC) converts biomasses into chars, which are possible substitutes for fossil-based carbons. In this study, a Pt catalyst derived from HTC of coconut shells is developed for catalysis of O2 reduction in acidic media. Thermal activation enlarges the specific surface area by factor of 7 to 546 m2 g-1, and generates electrical conductivity making the material suitable for catalysis. 1.8±0.5 nm Pt particles are well-distributed on the activated carbon. Cyclic and CO stripping voltammetry show an electrochemical surface area (ECSA) of 69±21 m2 gPt -1, being almost identical to that of the commercial catalyst using Vulcan® (69±6 m2 gPt-1). Although ECSAs are highly comparable, the activity for O2 reduction is lower compared to the commercial catalyst. HTC derived carbon has a lower degree of graphitization, less functional oxygen groups on its surface and a lower electrical conductivity than Vulcan®. This suggests different Pt–support interactions.

Item URL in elib:https://elib.dlr.de/128904/
Document Type:Article
Title:HTC Derived CARBON from Waste Biomass as Renewable Pt Support for Fuel Cell Application: Role of Carbon Activation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schonvogel, Danadana.schonvogel (at) dlr.dehttps://orcid.org/0000-0002-2485-740X
Nowotny, ManuelCarl von Ossietzky UniversityUNSPECIFIED
Woriescheck, TimCarl von Ossietzky UniversityUNSPECIFIED
Multhaupt, HendrikCarl von Ossietzky UniversityUNSPECIFIED
Wagner, Peterp.wagner (at) dlr.dehttps://orcid.org/0000-0002-5644-9881
Dyck, Alexanderalexander.dyck (at) dlr.dehttps://orcid.org/0000-0002-5010-8226
Agert, Carstencarsten.agert (at) dlr.dehttps://orcid.org/0000-0003-4733-5257
Wark, MichaelCarl von Ossietzky Universityhttps://orcid.org/0000-0002-8725-0103
Date:1 August 2019
Journal or Publication Title:Energy Technology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1002/ente.201900344
Page Range:p. 1900344
Keywords:biomass, fuel cells, oxygen reduction reaction, platinum, supported catalysts
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Energy Systems Technology (old)
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Fuel Cells
Deposited By: Lorenz, Julian
Deposited On:28 Oct 2019 17:51
Last Modified:25 May 2020 10:22

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