Self-Powered Water Splitting of Ni 3 FeN@Fe 24 N 10 Bifunctional Catalyst Improved Catalytic Activity and Durability by Forming Fe 24 N 10 on Catalyst Surface via the Kirkendall Effect.

Autor: Jeong DI; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Kang D; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Kang BK; Department of Electronic Materials, Devices, and Equipment Engineering, Soonchunhyang University, Chungnam, 31538, Republic of Korea.; Advanced Energy Research Center, Soonchunhyang University, Chungnam, 31538, Republic of Korea., Lee UY; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Suh IY; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Kim Y; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Weon BM; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea., Kim SW; Department of Materials Science and Engineering, Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul, 03722, Republic of Korea., Yoon DH; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.; SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Aug; Vol. 20 (33), pp. e2400374. Date of Electronic Publication: 2024 Apr 02.
DOI: 10.1002/smll.202400374
Abstrakt: Highly efficient water splitting electrocatalyst for producing hydrogen as a renewable energy source offers potential to achieve net-zero. However, it has significant challenges in using transition metal electrocatalysts as alternatives to noble metals due to their low efficiency and durability, furthermore, the reliance on electricity generation for electrocatalysts from fossil fuels leads to unavoidable carbon emissions. Here, a highly efficient self-powered water splitting system integrated is designed with triboelectric nanogenerator (TENG) and Ni 3 FeN@Fe 24 N 10 catalyst with improved catalytic activity and durability. First, the durability of the Ni 3 FeN catalyst is improved by forming N, P carbon shell using melamine, polyetherimide, and phytic acid. The catalyst activity is improved by generating Fe 24 N 10 in the carbon shell through the Kirkendall effect. The synthesized Ni 3 FeN@Fe 24 N 10 catalyst exhibited excellent bifunctional catalytic activity (η OER = 261.8 mV and η HER = 151.8 mV) and remarkable stability (91.7% in OER and 90.5% in HER) in 1 m KOH. Furthermore, to achieve ecofriendly electricity generation, a rotation-mode TENG that sustainably generate high-performance is realized using butylated melamine formaldehyde. As a result, H 2 is successfully generated using the integrated system composed of the designed TENG and catalyst. The finding provides a promising approach for energy generation to achieve net-zero.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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