Chang, Jinfa ORCID: 0000-0002-5066-3625, Ko, Tae-Jun ORCID: 0000-0001-8763-445X, Je, Minyeong, Chung, Hee-Suk, Han, Sang Sub, Shawkat, Mashiyat Sumaiya, Wang, Mengjing, Park, Sang Jin, Yu, Seung Min, Bae, Tae-Sung, Moon, Myoung-Woon, Oh, Kyu Hwan, Choi, Heechae ORCID: 0000-0002-9390-6607, Yang, Yang ORCID: 0000-0002-4410-6021 and Jung, Yeonwoong (2021). Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells. ACS Energy Lett., 6 (10). S. 3481 - 3488. WASHINGTON: AMER CHEMICAL SOC. ISSN 2380-8195

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Abstract

Platinum (Pt) has been considered the best catalyst for oxygen reduction reaction (ORR) based-direct liquid fuel cells (DLFCs). However, its high cost and the mixed potential issue have been obstacles for commercialization. Herein, we report a new Pt-based catalyst of two-dimensionally layered platinum ditelluride (2D PtTe2) with mixed layer orientation, termed M-PtTe2. This material constitutes vertically- and horizontally aligned 2D PtTe2 layers, which synergistically boost the ORR reaction; the former promotes O-2 adsorption and electron transfer, while the latter boosts O-O bond breaking and O-H bond coupling. The M-PtTe2 synthesized on nanostructured carbon papers significantly surpasses the ORR performances of commercial Pt/C, yielding 2.4-times higher mass activity in half-cell and 2-times higher maximum power density in actual devices. Furthermore, it exhibits extremely low alcohol adsorption energies, unveiling unprecedented suitability for alcohol tolerant DLFCs. This new understanding of the role of the 2D layer orientation in ORR kinetics and thermodynamics suggests useful catalyst design principles.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Chang, JinfaUNSPECIFIEDorcid.org/0000-0002-5066-3625UNSPECIFIED
Ko, Tae-JunUNSPECIFIEDorcid.org/0000-0001-8763-445XUNSPECIFIED
Je, MinyeongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chung, Hee-SukUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Han, Sang SubUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shawkat, Mashiyat SumaiyaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, MengjingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Park, Sang JinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yu, Seung MinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bae, Tae-SungUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moon, Myoung-WoonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Oh, Kyu HwanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Choi, HeechaeUNSPECIFIEDorcid.org/0000-0002-9390-6607UNSPECIFIED
Yang, YangUNSPECIFIEDorcid.org/0000-0002-4410-6021UNSPECIFIED
Jung, YeonwoongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-591637
DOI: 10.1021/acsenergylett.1c01776
Journal or Publication Title: ACS Energy Lett.
Volume: 6
Number: 10
Page Range: S. 3481 - 3488
Date: 2021
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 2380-8195
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OXYGEN REDUCTION REACTION; METAL; CATALYSTS; PTTE2; MOS2; TRANSITION; EVOLUTION; GROWTHMultiple languages
Chemistry, Physical; Electrochemistry; Energy & Fuels; Nanoscience & Nanotechnology; Materials Science, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59163

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