Preparation of Pt/Ir x(IrO 2) 10 - X bifunctional oxygen catalyst for unitized regenerative fuel cell

Fan Dong Kong; Sheng Zhang; Ge Ping Yin; Na Zhang; Zhen Bo Wang; Chun Yu Du

doi:10.1016/j.jpowsour.2012.02.021

Preparation of Pt/Ir _x(IrO ₂) _{10 - X} bifunctional oxygen catalyst for unitized regenerative fuel cell

Fan Dong Kong
, Sheng Zhang
, Ge Ping Yin^*
, Na Zhang
, Zhen Bo Wang
, Chun Yu Du

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Jining Medical College

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Bifunctional Pt/Ir _x(IrO ₂) _{10 - x} (x < 10) catalyst for unitized regenerative fuel cell (URFC) has been prepared by depositing Pt on Ir _x(IrO ₂) _{10 - x} support which is obtained initially from Adams fusion method. X-ray diffraction and transmission electron microscopy show that ultrafine and narrow distributed Pt/Ir ₃(IrO ₂) ₇ nanocomposites are formed. Electrochemical measurements demonstrate that among the series of catalysts studied, Pt/Ir ₃(IrO ₂) ₇ catalyst possesses the highest electrochemical surface area (24.74 m ² g ^-1) and the highest activity towards oxygen reduction reaction (ORR) (21.71 mA mg ^-1 at 0.85 V). Meanwhile, considerably high activity towards oxygen evolution reaction (OER) (42.35 mA mg ^-1 at 1.55 V) is also observed for Pt/Ir ₃(IrO ₂) ₇ catalyst. Kinetic analyses indicate that ORR on Pt/Ir ₃(IrO ₂) ₇ catalyst follows four-electron mechanism. This work opens a new way to fabricate efficient bifunctional oxygen catalyst for URFC.

Original language	English
Pages (from-to)	321-326
Number of pages	6
Journal	Journal of Power Sources
Volume	210
DOIs	https://doi.org/10.1016/j.jpowsour.2012.02.021
State	Published - 15 Jul 2012
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Bifunctional oxygen catalyst
Platinum-iridium catalyst
Unitized regenerative fuel cell

Access to Document

10.1016/j.jpowsour.2012.02.021

Cite this

@article{f33b62f415ef490dada1edade7c6fd00,

title = "Preparation of Pt/Ir x(IrO 2) 10 - X bifunctional oxygen catalyst for unitized regenerative fuel cell",

abstract = "Bifunctional Pt/Ir x(IrO 2) 10 - x (x < 10) catalyst for unitized regenerative fuel cell (URFC) has been prepared by depositing Pt on Ir x(IrO 2) 10 - x support which is obtained initially from Adams fusion method. X-ray diffraction and transmission electron microscopy show that ultrafine and narrow distributed Pt/Ir 3(IrO 2) 7 nanocomposites are formed. Electrochemical measurements demonstrate that among the series of catalysts studied, Pt/Ir 3(IrO 2) 7 catalyst possesses the highest electrochemical surface area (24.74 m 2 g -1) and the highest activity towards oxygen reduction reaction (ORR) (21.71 mA mg -1 at 0.85 V). Meanwhile, considerably high activity towards oxygen evolution reaction (OER) (42.35 mA mg -1 at 1.55 V) is also observed for Pt/Ir 3(IrO 2) 7 catalyst. Kinetic analyses indicate that ORR on Pt/Ir 3(IrO 2) 7 catalyst follows four-electron mechanism. This work opens a new way to fabricate efficient bifunctional oxygen catalyst for URFC.",

keywords = "Bifunctional oxygen catalyst, Platinum-iridium catalyst, Unitized regenerative fuel cell",

author = "Kong, \{Fan Dong\} and Sheng Zhang and Yin, \{Ge Ping\} and Na Zhang and Wang, \{Zhen Bo\} and Du, \{Chun Yu\}",

year = "2012",

month = jul,

day = "15",

doi = "10.1016/j.jpowsour.2012.02.021",

language = "英语",

volume = "210",

pages = "321--326",

journal = "Journal of Power Sources",

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TY - JOUR

T1 - Preparation of Pt/Ir x(IrO 2) 10 - X bifunctional oxygen catalyst for unitized regenerative fuel cell

AU - Kong, Fan Dong

AU - Zhang, Sheng

AU - Yin, Ge Ping

AU - Zhang, Na

AU - Wang, Zhen Bo

AU - Du, Chun Yu

PY - 2012/7/15

Y1 - 2012/7/15

N2 - Bifunctional Pt/Ir x(IrO 2) 10 - x (x < 10) catalyst for unitized regenerative fuel cell (URFC) has been prepared by depositing Pt on Ir x(IrO 2) 10 - x support which is obtained initially from Adams fusion method. X-ray diffraction and transmission electron microscopy show that ultrafine and narrow distributed Pt/Ir 3(IrO 2) 7 nanocomposites are formed. Electrochemical measurements demonstrate that among the series of catalysts studied, Pt/Ir 3(IrO 2) 7 catalyst possesses the highest electrochemical surface area (24.74 m 2 g -1) and the highest activity towards oxygen reduction reaction (ORR) (21.71 mA mg -1 at 0.85 V). Meanwhile, considerably high activity towards oxygen evolution reaction (OER) (42.35 mA mg -1 at 1.55 V) is also observed for Pt/Ir 3(IrO 2) 7 catalyst. Kinetic analyses indicate that ORR on Pt/Ir 3(IrO 2) 7 catalyst follows four-electron mechanism. This work opens a new way to fabricate efficient bifunctional oxygen catalyst for URFC.

AB - Bifunctional Pt/Ir x(IrO 2) 10 - x (x < 10) catalyst for unitized regenerative fuel cell (URFC) has been prepared by depositing Pt on Ir x(IrO 2) 10 - x support which is obtained initially from Adams fusion method. X-ray diffraction and transmission electron microscopy show that ultrafine and narrow distributed Pt/Ir 3(IrO 2) 7 nanocomposites are formed. Electrochemical measurements demonstrate that among the series of catalysts studied, Pt/Ir 3(IrO 2) 7 catalyst possesses the highest electrochemical surface area (24.74 m 2 g -1) and the highest activity towards oxygen reduction reaction (ORR) (21.71 mA mg -1 at 0.85 V). Meanwhile, considerably high activity towards oxygen evolution reaction (OER) (42.35 mA mg -1 at 1.55 V) is also observed for Pt/Ir 3(IrO 2) 7 catalyst. Kinetic analyses indicate that ORR on Pt/Ir 3(IrO 2) 7 catalyst follows four-electron mechanism. This work opens a new way to fabricate efficient bifunctional oxygen catalyst for URFC.

KW - Bifunctional oxygen catalyst

KW - Platinum-iridium catalyst

KW - Unitized regenerative fuel cell

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DO - 10.1016/j.jpowsour.2012.02.021

M3 - 文章

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