Improved Reversal Tolerant Properties of IrOX as an Anode Electrocatalyst in Proton Exchange Membrane Fuel Cells

Liao, Jianhua1,2; Zaman, Shahid1; Wang, Yameng1; Yang, Ming3; Yang, Lin1; Chen, Ming1; Wang, Haijiang1,2

2023

10.1021/acsami.2c20246

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Voltage reversal is a severe issue in proton exchange membrane fuel cells (PEMFCs), which can be overcome by adding oxygen evolution electrocatalysts (OER) based on iridium oxide (IrOX) to the anode catalyst layer. However, the crystal structure and antireversal properties of such anode materials have been rarely investigated. Herein, we report amorphous IrOX and explore the transformation of crystal structure under heat treatment to examine their antireversal performance in PEMFCs. It is found that heat treatment results in larger catalyst particles which consequences lower OER activity; however, it shows better voltage reverse tolerance (132.2 min). These investigations demonstrate that a balance is crucial between activity and durability in antireversal properties for PEMFCs. Physical characterizations reveal that improved stability and reversal tolerance is attributed to crystallinity and preferred orientation of IrOX crystals as well as existence of amorphous and crystalline IrOX. This work proposes a attempt to use the mixed phase IrOX in the antireversal anode catalyst and highlights the role of corresponding particle size and durability characteristics for the long-term durability of PEMFCs.

annealing temperature amorphous IrOX voltage reversal oxygen evolution electrocatalysts proton exchange membrane fuel cells

SCI ; EI

英语

第一 ; 通讯

Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N500]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000916044500001

AMER CHEMICAL SOC

20230313406888

Anodes ; Crystal orientation ; Crystallinity ; Durability ; Heat treatment ; Iridium compounds ; Oxygen ; Particle size ; Proton exchange membrane fuel cells (PEMFC)

Heat Treatment Processes:537.1 ; Fuel Cells:702.2 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Minist Educ, Key Lab Energy Convers & Storage Technol, Shenzhen 518055, Peoples R China
3.Shenzhen Univ, Coll Chem Environm Engn, Shenzhen 518060, Peoples R China

Liao, Jianhua,Zaman, Shahid,Wang, Yameng,et al. Improved Reversal Tolerant Properties of IrOX as an Anode Electrocatalyst in Proton Exchange Membrane Fuel Cells[J]. ACS Applied Materials & Interfaces,2023,15(3):4092-4100.

Liao, Jianhua.,Zaman, Shahid.,Wang, Yameng.,Yang, Ming.,Yang, Lin.,...&Wang, Haijiang.(2023).Improved Reversal Tolerant Properties of IrOX as an Anode Electrocatalyst in Proton Exchange Membrane Fuel Cells.ACS Applied Materials & Interfaces,15(3),4092-4100.

Liao, Jianhua,et al."Improved Reversal Tolerant Properties of IrOX as an Anode Electrocatalyst in Proton Exchange Membrane Fuel Cells".ACS Applied Materials & Interfaces 15.3(2023):4092-4100.