title: Electrochemical hydrogen evolution of multi-walled carbon nanotube/micro-hybrid composite decorated with Ni nanoparticles as catalyst through electroless deposition process.
abstract: Hydrogen evolution of multi-walled nanotube (MWCNT)/micro-hybrid polymer composite, decorated with Ni nanoparticles through electroless deposition process is studied by the electrochemical method. Cyclic voltammetry (CV) is utilized to clearly study the electrochemical hydrogen storage/evolution behavior of the composite through a potential window ranging from -1.60 to +0.60 V (vs. Ag/AgCl). Hydrogen adsorption/desorption peaks are positioned at -1.52 and -0.05 V, respectively. Chronoamperometry is also applied to estimate active surface area (0.145 m(2)g(-1)) of the composite as well as the diffusion coefficient (3.4×10(-11) m(2) s(-1)) of adsorbed hydrogen process. According to the chrono-charge/discharge technique, the capacity of fabricated Ni-MWCNT/micro-hybrid composite is estimated to be 2.98 wt.% during charging for a certain time (40 min).
authors.affiliation: Nano Chemical Engineering, Department, Shiraz University, Shiraz, Iran.
authors.forename: Nazanin
authors.initials: N
authors.lastname: Rahimi
authors.forename: Mohammad Mahdi
authors.initials: MM
authors.lastname: Doroodmand
authors.forename: Samad
authors.initials: S
authors.lastname: Sabbaghi
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Sheikhi
mesh_terms: D002384:Catalysis; D058266:Dielectric Spectroscopy; D055664:Electrochemical Techniques; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry
chemical_list: D004573:Electrolytes; D037742:Nanotubes, Carbon; D011108:Polymers; D009532:Nickel; D006859:Hydrogen