title: Protein-mediated layer-by-layer synthesis of TiO₂(B)/anatase/carbon coating on nickel foam as negative electrode material for lithium-ion battery.
abstract: Through an aqueous, protein-mediated layer-by-layer titania deposition process, we have fabricated a protamine/titania composite layer on nickel foam. The coating was composed of amorphous carbon and TiO2(B)/anatase nanoparticles and formed upon organic pyrolysis under a reducing atmosphere (5% H2-Ar mixture). X-ray diffraction analyses, Auger electron spectroscopy, and high-resolution transmission electron microscopy revealed that the obtained coatings contained fine monoclinic TiO2(B) and anatase nanocrystals, along with amorphous carbon. Moreover, the coating can be used as a binder-free negative electrode material for lithium-ion batteries and exhibits high reversible capacity and fast charge-discharge properties; a reversible capacity of 245 mAh g(-1) was obtained at a current density of 50 mA g(-1), and capacities of 167 and 143 mAh g(-1) were obtained at current densities of 1 and 2 A g(-1), respectively.
authors.affiliation: College of Environmental & Energy Engineering, Beijing University of Technology, Pingleyuan 100, 100124 Beijing, People's Republic of China.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Yan
authors.forename: Bo
authors.initials: B
authors.lastname: Hao
authors.forename: Ge
authors.initials: G
authors.lastname: Chen
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D004566:Electrodes; D008094:Lithium / Q000737:chemistry; D009532:Nickel / Q000737:chemistry*; D011479:Protamines / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D011479:Protamines; C009495:titanium dioxide; D002244:Carbon; D009532:Nickel; D008094:Lithium; D014025:Titanium