Outstanding fuel cell performance of a fully platinum-free electrocatalysts using a cost-effective catalyst support material

  1. Priji Chandran and
  2. Sundara RamaprabhuORCID Logo

Submitting author affiliation: Indian Institute of Technology Chennai, IIT Chenai, India, Chennai, India

Beilstein Arch. 2020, 202010. doi:10.3762/bxiv.2020.10.v1

Published 17 Jan 2020

  • Preprint

Abstract

One of the effective ways to increase the electrocatalytic activity of carbon based electrocatalyst in a fuel cell is by in-situ incorporation of heteroatom into the carbon nanostructure. Herein, a cost effective catalyst support material, nitrogen rich carbon nanostructure (NCNS) with high surface area and tubular morphology was synthesized. NCNS supported palladium-alloy based electrocatalyst (Pd3Co/NCNS) was successfully prepared and used on both sides of a fuel cell as potential alternative to expensive Pt-based electrocatalysts. The large number of nitrogen-carbon moieties present in NCNS served as anchoring sites for catalyst nanoparticles. Moreover, the tubular morphology and high surface area plays an important role in enhanced electrochemical activity of the prepared nanocomposite. The Pd-based bimetallic alloy dispersed on NCNS exhibited high activity towards both oxidation of hydrogen and reduction of oxygen in acidic medium. Thus, a fully Pt-free electrocatalyst was constructed using a cost effective electrocatalyst. The peak power density achieved using Pd3Co/NCNS at both anode and cathode simultaneously was found to be almost 25 % of the maximum power density attained using commercial Pt/C on both sides, which is the maximum value reported so far in PEMFC without using Pt on either side.

Keywords: Nitrogen doped carbon; Heteroatom doping; ORR activity; Non-Pt catalyst; Carbonization

Supporting Information

Format: DOC Size: 1.0 MB   Download

How to Cite

When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Chandran, P.; Ramaprabhu, S. Beilstein Arch. 2020, 202010. doi:10.3762/bxiv.2020.10.v1

Download Citation
Download RIS (Reference Manager) Download BIB (BIBTEX)

© 2020 Chandran and Ramaprabhu; licensee Beilstein-Institut.
This is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited.
The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)

Other Beilstein-Institut Open Science Activities

Logo
Logo
Logo
Symposia