Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells

Jinfa Chang; Tae Jun Ko; Minyeong Je; Hee Suk Chung; Sang Sub Han; Mashiyat Sumaiya Shawkat; Mengjing Wang; Sang Jin Park; Seung Min Yu; Tae Sung Bae; Myoung Woon Moon; Kyu Hwan Oh; Heechae Choi; Yang Yang; Yeonwoong Jung

doi:10.1021/acsenergylett.1c01776

Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells

Jinfa Chang, Tae Jun Ko, Minyeong Je, Hee Suk Chung, Sang Sub Han, Mashiyat Sumaiya Shawkat, Mengjing Wang, Sang Jin Park, Seung Min Yu, Tae Sung Bae, Myoung Woon Moon, Kyu Hwan Oh, Heechae Choi, Yang Yang^*, Yeonwoong Jung^*

^*Corresponding author for this work

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

13 Citations (Scopus)

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 O2 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.

Original language	English
Pages (from-to)	3481-3487
Number of pages	7
Journal	ACS Energy Letters
Volume	6
Issue number	10
DOIs	https://doi.org/10.1021/acsenergylett.1c01776
Publication status	Published - 8 Oct 2021
Externally published	Yes

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Chang, J., Ko, T. J., Je, M., Chung, H. S., Han, S. S., Shawkat, M. S., Wang, M., Park, S. J., Yu, S. M., Bae, T. S., Moon, M. W., Oh, K. H., Choi, H., Yang, Y., & Jung, Y. (2021). Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells. ACS Energy Letters, 6(10), 3481-3487. https://doi.org/10.1021/acsenergylett.1c01776

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title = "Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells",

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 O2 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.",

author = "Jinfa Chang and Ko, {Tae Jun} and Minyeong Je and Chung, {Hee Suk} and Han, {Sang Sub} and Shawkat, {Mashiyat Sumaiya} and Mengjing Wang and Park, {Sang Jin} and Yu, {Seung Min} and Bae, {Tae Sung} and Moon, {Myoung Woon} and Oh, {Kyu Hwan} and Heechae Choi and Yang Yang and Yeonwoong Jung",

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doi = "10.1021/acsenergylett.1c01776",

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T1 - Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells

AU - Chang, Jinfa

AU - Ko, Tae Jun

AU - Je, Minyeong

AU - Chung, Hee Suk

AU - Han, Sang Sub

AU - Shawkat, Mashiyat Sumaiya

AU - Wang, Mengjing

AU - Park, Sang Jin

AU - Yu, Seung Min

AU - Bae, Tae Sung

AU - Moon, Myoung Woon

AU - Oh, Kyu Hwan

AU - Choi, Heechae

AU - Yang, Yang

AU - Jung, Yeonwoong

PY - 2021/10/8

Y1 - 2021/10/8

N2 - 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 O2 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.

AB - 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 O2 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.

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Layer Orientation-Engineered Two-Dimensional Platinum Ditelluride for High-Performance Direct Alcohol Fuel Cells

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