In this section, you can access to the latest technical information related to the FUTURE project topic.

Metal-rich heterostructure of Ag-doped FeS/Fe2P for robust hydrogen evolution

The transition metal phosphides (TMPs) with highly active and low-cost are imperative electrocatalysts for hydrogen evolution reaction (HER). In particular, metal-rich interface engineering of iron phosphide could effectively modify the active sites for HER and accelerate the charge transfer, thus achieving the promoted efficiency. Herein, we report metal-rich heterostructure of Ag-doped Fe2P shell attached to FeS core on Fe foams (FeS/Fe2P?[email protected]) for HER, which are synthesized by a simple hydrothermal method with subsequent low-temperature phosphorization. Notably, the phosphorization process simultaneously achieves the partial conversion of FeS to Fe2P, and complete reduction of Ag2S to Ag. Furthermore, the metal-rich structure of Fe2P increases the active sites for hydrogen adsorption, which consequently contributes to hydrogen evolution. Simultaneously, the successful doping of metallic Ag enhanced the electroconductivity and the stability of the electrocatalyst. Benefiting from the ternary synergistic effect at FeS/Fe2P?[email protected] and metallic Ag doping, the optimal Ag-doped FeS/Fe2P electrocatalyst exhibits a low overpotential of 214.9?mV at 100?mA?cm?2, even surviving at this large current density with long-term stability. This promising strategy involving metallic Ag doping may be a suitable option for the development of iron-based metal-rich phosphides heterostructured for HER.

» Author: Meng-Xuan Li, Ya-Nan Zhou, Yi-Wen Dong, Xin Liu, Ren-Ni Luan, Bin Liu, Jing-Bin Zeng, Yong-Ming Chai, Bin Dong

» More Information

« Go to Technological Watch



AIMPLAS Instituto Tecnológico del Plástico

C/ Gustave Eiffel, 4
(València Parc Tecnològic) - 46980
PATERNA (Valencia) - SPAIN

PHONE

(+34) 96 136 60 40

EMAIL

Project Management department - Sustainability and Industrial Recovery
life-future-project@aimplas.es