Premium
Manganese Oxide Nanorod‐Decorated Mesoporous ZSM‐5 Composite as a Precious‐Metal‐Free Electrode Catalyst for Oxygen Reduction
Author(s) -
Cui Xiangzhi,
Hua Zile,
Chen Lisong,
Zhang Xiaohua,
Chen Hangrong,
Shi Jianlin
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201600012
Subject(s) - mesoporous material , catalysis , nanorod , electrochemistry , nanocomposite , electrocatalyst , inorganic chemistry , materials science , manganese , chemical engineering , zeolite , methanol , chemistry , oxide , redox , electrode , nanotechnology , organic chemistry , engineering , metallurgy
A precious‐metal‐free cathode catalyst, MnO 2 nanorod‐decorated mesoporous ZSM‐5 zeolite nanocomposite (MnO 2 / m‐ZSM‐5), has been successfully synthesized by a hydrothermal and electrostatic interaction approach for efficient electrochemical catalysis of the oxygen reduction reaction (ORR). The active MnOOH species, that is, Mn 4+ /Mn 3+ redox couple and Brønsted acid sites on the mesoporous ZSM‐5 matrix facilitate an approximately 4 e − process for the catalysis of the ORR comparable to commercial 20 wt % Pt/C. Stable electrocatalytic activity with 90 % current retention after 5000 cycles, and more importantly, excellent methanol tolerance is observed. Synergetic catalytic effects between the MnO 2 nanorods and the mesoporous ZSM‐5 matrix are proposed to account for the high electrochemical catalytic performance.