|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Functional Nanomaterials 2020: Translating Innovation into Pioneering Technologies
||N-48: Flexible Honeycombed Nanoporous/glassy Hybrid for Efficient Electrocatalytic Hydrogen Generation
||Rui Li, K.C. Chan, Xiongjun Liu, Z.P. Lu
|On-Site Speaker (Planned)
Designing of highly active and durable electrocatalysts for the hydrogen evolution reaction (HER) in alkaline media remains significant challenge. Herein, a novel honeycombed nanoporous/glassy hybrid structure has been developed through dealloying of special designed metallic glass (MG). The hybrid with outstanding flexibility/stability can be directly served as high-performance catalytic electrodes for HER, exhibiting a minimal overpotential of 37 mV at 10 mA cm-2, low Tafel slope of 30 mV dec-1, and also excellent durability, superior than commercial Pt/C catalyst. The excellent HER activity mainly arises from the unique honeycombed nanoporous structure, which can provide abundant Pt-rich active sites on surface for fast electrochemical reaction kinetics and more contact surface area for efficient electron transportation. It has also been proven that the MG substrate is highly beneficial to the HER activity and stability of the hybrid. This finding provides an effective approach to designing new flexible electrocatalyst based on MGs.
||Planned: Supplemental Proceedings volume