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Nano Research 2022, 15(10): 9010-9018 https://doi.org/10.1007/s12274-022-4577-y
Research Article | Issue | Published: 21 June 2022

PtCu3 nanoalloy@porous PWOx composites with oxygen container function as efficient ORR electrocatalysts advance the power density of room-temperature hydrogen-air fuel cells

Show Author's Information Rui Chen1,  Tie Shu2,  Fengling Zhao1,  Yongfei Li2,  Xiaotong Yang1,  Jingwei Li3,  Daliang Zhang3,  Li-Yong Gan2,4( ),  Ke Xin Yao2,3( ),  Qiang Yuan1( )
State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies & School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China
Keywords:
oxygen reduction reaction, porous composite, platinum-copper alloy, oxygen container, hydrogen-air fuel cell
Topics:
Fuel cells
Cite this article:
Chen R, Shu T, Zhao F, et al. PtCu3 nanoalloy@porous PWOx composites with oxygen container function as efficient ORR electrocatalysts advance the power density of room-temperature hydrogen-air fuel cells. Nano Research, 2022, 15(10): 9010-9018. https://doi.org/10.1007/s12274-022-4577-y
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Abstract Full text Electronic supplementary material About this article

It is challenging and desirable to construct Pt-based nanocomposites with oxygen storage function as efficient oxygen reduction reaction (ORR) catalysts for practical proton exchange membrane fuel cells (PEMFCs). Herein, we achieve novel porous nanocomposites of PtCu3 nanoalloys-embedded in the PWOx matrix (PtCu3@PWOx), which has an oxygen container feature. The PtCu3@PWOx/C exhibits an ultrahigh mass activity (MA) of 3.94 A·mgPt−1 for ORR, which is 26.3 times as high as the commercial Pt/C and the highest value ever reported for PtCu-based binary system. Theoretical calculations reveal that the compressive strain and d-band center downshift of Pt intrinsically contribute to the excellent ORR performance. In H2-air PEMFCs at room temperature, furthermore, the PtCu3@PWOx/C delivers a high power density (218.6 mW·cm−2), much superior to commercial Pt/C (131.6 mW·cm−2). In H2-O2 PEMFCs, PtCu3@PWOx/C outputs a maximum power density of 420.1 mW·cm−2. This work provides an effective idea for designing oxygen-storing ORR catalysts used for practical room-temperature H2-air fuel cells.


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Electronic supplementary material
About this article

PtCu3 nanoalloy@porous PWOx composites with oxygen container function as efficient ORR electrocatalysts advance the power density of room-temperature hydrogen-air fuel cells

Show Author's information Rui Chen1, Tie Shu2, Fengling Zhao1, Yongfei Li2, Xiaotong Yang1, Jingwei Li3, Daliang Zhang3, Li-Yong Gan2,4( ), Ke Xin Yao2,3( ), Qiang Yuan1( )
State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies & School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China

Abstract

It is challenging and desirable to construct Pt-based nanocomposites with oxygen storage function as efficient oxygen reduction reaction (ORR) catalysts for practical proton exchange membrane fuel cells (PEMFCs). Herein, we achieve novel porous nanocomposites of PtCu3 nanoalloys-embedded in the PWOx matrix (PtCu3@PWOx), which has an oxygen container feature. The PtCu3@PWOx/C exhibits an ultrahigh mass activity (MA) of 3.94 A·mgPt−1 for ORR, which is 26.3 times as high as the commercial Pt/C and the highest value ever reported for PtCu-based binary system. Theoretical calculations reveal that the compressive strain and d-band center downshift of Pt intrinsically contribute to the excellent ORR performance. In H2-air PEMFCs at room temperature, furthermore, the PtCu3@PWOx/C delivers a high power density (218.6 mW·cm−2), much superior to commercial Pt/C (131.6 mW·cm−2). In H2-O2 PEMFCs, PtCu3@PWOx/C outputs a maximum power density of 420.1 mW·cm−2. This work provides an effective idea for designing oxygen-storing ORR catalysts used for practical room-temperature H2-air fuel cells.

Keywords: oxygen reduction reaction, porous composite, platinum-copper alloy, oxygen container, hydrogen-air fuel cell

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Publication history
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Acknowledgements

Publication history

Received: 16 April 2022
Revised: 21 May 2022
Accepted: 24 May 2022
Published: 21 June 2022
Issue date: October 2022

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© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 21571038), Foundation of Guizhou Province (No. 2019-5666), Education Department of Guizhou Province (No. 2021312), State Key Laboratory of Coal Mine Disaster Dynamics and Control (Chongqing University, No. 2011DA105287-ZR202101), State Key Laboratory of Physical Chemistry of Solid Surfaces (Xiamen University, No. 202009), and the Open Fund of the Key Lab of Organic Optoelectronics & Molecular Engineering (Tsinghua University). We gratefully acknowledge Analytical and Testing Center of Chongqing University.

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