Fig. 8: MXenes-based HER electrocatalysts optimized by metal-atom doping. | npj 2D Materials and Applications

Fig. 8: MXenes-based HER electrocatalysts optimized by metal-atom doping.

From: Recent advances of MXenes as electrocatalysts for hydrogen evolution reaction

Fig. 8

a Schematic illustration of hydrogen evolution of TM-doped MXenes. b The structural and computational models of TM-promoted V2CO2. c Calculated ΔGH of V2CO2 with 12.5%, 16.7%, and 25% monolayer (ML) H coverage on one surface TM coverage as a function of promoter and active site84. Copyright 2016, WILEY-VCH. d Top and side view of metal modified Ti3CNO2 MXenes. S1, S2 and S3 denote the sites for H atom adsorption sites. e Calculated ΔGH on C-side of metal modified Ti3CNO2 MXenes86. Copyright 2018, WILEY-VCH. f Top view of the slab models for describing Mo2TiC2Tx-PtSA. g The electrochemical exfoliation of MXenes with immobilized Pt single atoms. h HER polarization curves of carbon paper (CP), Mo2TiC2Tx, Mo2TiC2Tx-VMo, Mo2TiC2Tx-PtSA and Pt/C (40%)88. Copyright 2018, Springer Nature.

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