title: Flagellar filament bio-templated inorganic oxide materials - towards an efficient lithium battery anode.
abstract: Designing a new generation of energy-intensive and sustainable electrode materials for batteries to power a variety of applications is an imperative task. The use of biomaterials as a nanosized structural template for these materials has the potential to produce hitherto unachievable structures. In this report, we have used genetically modified flagellar filaments of the extremely halophilic archaea species Halobacterium salinarum to synthesize nanostructured iron oxide composites for use as a lithium-ion battery anode. The electrode demonstrated a superior electrochemical performance compared to existing literature results, with good capacity retention of 1032 mAh g(-1) after 50 cycles and with high rate capability, delivering 770 mAh g(-1) at 5 A g(-1) (~5 C) discharge rate. This unique flagellar filament based template has the potential to provide access to other highly structured advanced energy materials in the future.
authors.affiliation: Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia.
authors.forename: Sergei N
authors.initials: SN
authors.lastname: Beznosov
authors.affiliation: Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai 400076 Mumbai, India.
authors.forename: Pavan S
authors.initials: PS
authors.lastname: Veluri
authors.affiliation: Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia.
authors.forename: Mikhail G
authors.initials: MG
authors.lastname: Pyatibratov
authors.affiliation: Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, 400076 Mumbai, India.
authors.forename: Abhijit
authors.initials: A
authors.lastname: Chatterjee
authors.affiliation: Australian Center of Excellence for Electromaterials Science, School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
authors.forename: Douglas R
authors.initials: DR
authors.lastname: MacFarlane
authors.affiliation: Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia.
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Fedorov
authors.affiliation: Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai 400076 Mumbai, India.
authors.forename: Sagar
authors.initials: S
authors.lastname: Mitra
mesh_terms: D003198:Computer Simulation; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D005407:Flagella / Q000502:physiology*; D019766:Genes, Archaeal; D006217:Halobacterium / Q000235:genetics; D008094:Lithium / Q000737:chemistry*; D008903:Minerals; D009010:Monte Carlo Method; D010087:Oxides / Q000737:chemistry*
chemical_list: D008903:Minerals; D010087:Oxides; D008094:Lithium