Polarization-Switchable Electrochemistry of 2D Layered Bi 2 O 2 Se Bifunctional Microreactors by Ferroelectric Modulation.

Autor:	Chiang CH; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Yu CH; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Lu YS; Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan., Yang YC; Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan., Lin YC; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Chen HA; Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan., Ho SZ; Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan., Chen YC; Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan., Kumatani A; Department of Electrical and Electronic Engineering, Chiba Institute of Technology, Chiba, 275-0016, Japan.; Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Saitama, 332-0012, Japan.; WPI-Advanced Institute for Materials Research (AIMR) and Center for Science and Innovation in Spintronics (CSIS), Tohoku University, Sendai, 980-8577, Japan.; Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan., Chang C; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Kuo PC; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Shiue J; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Li SS; Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan., Chiu PW; Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Chen CW; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan.; Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan.; Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan.
Jazyk:	angličtina
Zdroj:	Nano letters [Nano Lett] 2024 Sep 04; Vol. 24 (35), pp. 11012-11019. Date of Electronic Publication: 2024 Aug 26.
DOI:	10.1021/acs.nanolett.4c03128
Abstrakt:	Ferroelectric catalysts are known for altering surface catalytic activities by changing the direction of their electric polarizations. This study demonstrates polarization-switchable electrochemistry using layered bismuth oxyselenide (L-Bi 2 O 2 Se) bifunctional microreactors through ferroelectric modulation. A selective-area ionic liquid gating is developed with precise control over the spatial distribution of the dipole orientation of L-Bi 2 O 2 Se. On-chip microreactors with upward polarization favor the oxygen evolution reaction, whereas those with downward polarization prefer the hydrogen evolution reaction. The microscopic origin behind polarization-switchable electrochemistry primarily stems from enhanced surface adsorption and reduced energy barriers for reactions, as examined by nanoscale scanning electrochemical cell microscopy. Integrating a pair of L-Bi 2 O 2 Se microreactors consisting of upward or downward polarizations demonstrates overall water splitting in a full-cell configuration based on a bifunctional catalyst. The ability to modulate surface polarizations on a single catalyst via ferroelectric polarization switching offers a pathway for designing catalysts for water splitting.
Databáze:	MEDLINE
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