Highly dispersed Co4N nanoparticles coated by g-C3N4 nanotube: An active bifunctional electrocatalyst for oxygen reduction and oxygen evolution reaction

Ni3N/Co4N nanosheet heterojunction electrocatalyst for hydrogen evolution reaction in alkaline fresh water/simulated seawater

“…29 Meanwhile, the peaks at 781.6 and 797.3 eV correspond to the Co-N bond, and the peaks at 786.1 and 802.6 eV belong to satellite peaks. [30][31][32][33][34] In Fig. 1f, the N 1s XPS spectra, the peak at 398.5 eV indicates the presence of metal-N bond, which further confirms the formation of nitrides.…”

Integrated PtxCoy-Hierarchical Carbon Matrix Electrocatalyst for Efficient Hydrogen Evolution Reaction

“…The remaining peaks for metallic Co could be attributed to the unresolved Co nanoparticles, which are encapsulated in carbon tubes, as shown in Figure S4. Meanwhile, the XRD patterns show a sharp peak at 26.5°, which belongs to the (002) plane of graphitic carbon …”

Co4N–WNx composite for efficient piezocatalytic hydrogen evolution

“…These can be assigned to Co 2p 3/2 and Co 2p 1/2 of the Co-N bond, respectively. 46 In addition, the N 1s spectra (Fig. S5b †) can be deconvoluted into two peaks at 397.3 eV and 399.6 eV.…”