Fig. 3: Structural analysis and electrochemical diagnosis of D-Ni(OH)2/Ni@CF.
From: Promoting the OH cycle on an activated dynamic interface for electrocatalytic ammonia synthesis
a HR-TEM image of D-Ni(OH)/Ni@CF with scale bar of 200 nm. b HR-TEM image of D-Ni(OH)/Ni@CF with scale bar of 5 nm. c PALS spectra of Ni(OH)2/Ni@CF and D-Ni(OH)2/Ni@CF. d Ni 2p XPS spectra of Ni(OH)/Ni@CF and D-Ni(OH)/Ni@CF. e O 1 s XPS spectra of Ni(OH)/Ni@CF and D-Ni(OH)/Ni@CF. f EPR spectra of D-Ni(OH)/Ni@CF with different plasma input power (100 ~ 300 W). g Polarization curves measured by linear sweep voltammetry (LSV) from 0.2 to -0.65 V vs. RHE (without iR compensation, resistance between RE and WE: 1.6 Ω, 5 mV s−1) of CF, Ni(OH)2/Ni@CF, D-Ni(OH)2/Ni@CF, and ECSA normalized D-Ni(OH)2/Ni@CF, respectively (j ECSA normalized D-Ni(OH)2/Ni@CF = j D-Ni(OH)2/Ni@CF * ECSA Ni(OH)2/Ni@CF / ECSA D-Ni(OH)2/Ni@CF). Operando EIS plots from 0.5 to 0 V vs. RHE (without iR compensation) of (h) D-Ni(OH)2/Ni@CF and (i) Ni(OH)2/Ni@CF with a frequency range from 0.1 Hz to 10 kHz (EDLC: electrochemical double-layer capacitor). Source data for Fig. 3 are provided as a Source Data file.
