Half-Sphere Shell Supported Pt Catalyst for Electrochemical Methanol Oxidation

Ren, Bingzhi, Lu, Jianwei, Wang, Yucheng, Gu, Xingxing, Xu, Bin, Fu, Richard, Luo, Kun, Bayati, Maryam and Liu, Terence Xiaoteng (2020) Half-Sphere Shell Supported Pt Catalyst for Electrochemical Methanol Oxidation. Journal of the Electrochemical Society. ISSN 0013-4651 (In Press)

[img] Text
Revised_manuspt_Terence_06Apr2020_for_reviewers.pdf - Accepted Version
Restricted to Repository staff only until 28 April 2021.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB) | Request a copy
Official URL: https://doi.org/10.1149/1945-7111/ab8dde

Abstract

Bi-functional effect, elevated mass transport and increased durability have been combined within one catalyst for electrochemical methanol oxidation reaction. It has niobium (Nb) doped titanium dioxides (TiO2) nanosized half-sphere shell (HSS) as the substrate material deposited with small amount of Pt nanoparticles. These specially designed HSS nanostructure has significantly increased surface areas which are suitable for Pt nanoparticles to be deposited onto them to form the catalyst denoted as Pt/Nb-TiO2 HSS. It exhibits a remarkably high methanol oxidation activity of 0.21 V vs. RHE which is 0.05 V lower than HiSPEC10000 PtRu/C catalyst, due to the substrate's strong metal support interactions effect, bi-functional effect and the special structure. These HSS nanostructures have also increased the methanol diffusion and mass transport within the anode to give a maximum power output of 0.0931 W of cathode polarization in miniature direct methanol fuel cell (DMFC). It also acts as protection shells, which minimises the dissolution of Pt metal nanoparticles to prevent its diffusion through the membrane.

Item Type: Article
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 29 Apr 2020 16:13
Last Modified: 29 Apr 2020 16:15
URI: http://nrl.northumbria.ac.uk/id/eprint/42972

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics