[url=www.wyactivatedcarbon.com/products/granular-activated-carbon/activated-carbon-gold-extraction.html]activated carbon extracting gold[/url]Activated carbon nanofibers (ACNF*) prepared by carbonization and chemical activation of polyacrylonitrile (PAN)-polyvinylpyrrolidone (PVP) electrospun nanofibers and doped with 5–20 wt% Ni are proposed for hydrogen adsorption at 25 °C. The best hydrogen adsorption capacities up to 2.12 wt% H2 (p(H2) = 100 bar) together with cycling stability upon 10 ad/desorption cycles with average capacity of 1.17 wt% H2 (p(H2) = 50 bar) are obtained from 5 wt% Ni-doped ACNF*. Excellent ad/desorption and reversibility are benefited from small particle sizes (5–10 nm) and uniform distribution of Ni nanoparticles. The latter is due to not only suitable Ni loading content (5 wt but also strong interaction between Ni nanoparticles and N atoms in ACNF*, confirmed by both experiments and first-principles computations. Both experiments and computations indicate that hydrogen adsorption mechanisms are not only chemisorption of adsorbed hydrogen atoms onto Ni nanoparticles but also physisorption and spillover of hydrogen[url=www.wyactivatedcarbon.com/]activated carbon supplier[/url]