Water electrolysis shows great promise as a viable pathway for the scalable production of high-purity hydrogen, a clean and renewable energy source. Despite being extensively developed for water splitting, scalable electrocatalysts that can balance catalytic activity and cost-effectiveness continue to be in great demand. Herein, we report a low Pt content electrocatalyst based on a N-doped carbon matrix derived from a hypercrosslinked porous organic polymer (HCP). The HCP was prepared through double Friedel-Crafts reactions with improved porosity for the first time. After Pt metallization and carbonization, a scalable electrocatalyst was obtained without other capping and reducing agents. The prepared catalyst exhibited top-tier performances in catalytic activity and durability in hydrogen evolution reaction when compared to previously reported metal-organic framework- and covalent organic framework-based catalysts. In addition, a water splitting cell using a porous material was demonstrated for the first time. This work provides insight into the design of a scalable electrocatalyst for the generation of hydrogen from water electrolysis.
Bibliographical noteFunding Information:
D.W.K., M.J., and J.K. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2021R1A2B5B03086313, 2021M3I3A1084573, and 2019R1A6A1A11044070 for C.S.H.; 2020R1A2B5B03002475, 2019M3E5A1064709, and 2021M3H4A1A02049916 for K.L.; 2021M3I3A1082879 for J.Y.K.; and 2021R1A6A3A01088118 for J.K.). This work was also supported by the KIST institutional program (2E31871 for J.Y.K.).
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- double polymerization
- hydrogen evolution reaction
- hypercrosslinked porous organic polymer
- low Pt content electrocatalyst
- water splitting device
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Energy Engineering and Power Technology
- Materials Chemistry
- Electrical and Electronic Engineering