title: Platinum and palladium nanotubes based on genetically engineered elastin-mimetic fusion protein-fiber templates: synthesis and application in lithium-O₂ batteries.
abstract: The coupling of proteins with self-assembly properties and proteins that are capable of recognizing and mineralizing specific inorganic species is a promising strategy for the synthesis of nanoscale materials with controllable morphology and functionality. Herein, GPG-AG3 protein fibers with both of these properties were constructed and served as templates for the synthesis of Pt and Pd nanotubes. The protein fibers of assembled GPG-AG3 were more than 10 μm long and had diameters of 20-50 nm. The as-synthesized Pt and Pd nanotubes were composed of dense layers of ~3-5 nm Pt and Pd nanoparticles. When tested as cathodes in lithium-O2 batteries, the porous Pt nanotubes showed low charge potentials of 3.8 V, with round-trip efficiencies of about 65% at a current density of 100 mA g(-1).
authors: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore).
authors: Guilue
authors: G
authors: Guo
authors: Thi Hong Anh
authors: TH
authors: Truong
authors: Huiteng
authors: H
authors: Tan
authors: Huixiang
authors: H
authors: Ang
authors: Wenyu
authors: W
authors: Zhang
authors: Chen
authors: C
authors: Xu
authors: Xianghong
authors: X
authors: Rui
authors: Zhaolong
authors: Z
authors: Hu
authors: Eileen
authors: E
authors: Fong
authors: Qingyu
authors: Q
authors: Yan
mesh_terms: D032701:Biomimetics; D004549:Elastin / Q000737:chemistry*; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D005818:Genetic Engineering; D008094:Lithium / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D010455:Peptides / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification; D013499:Surface Properties
chemical_list: D010455:Peptides; D011993:Recombinant Fusion Proteins; D010984:Platinum; D010165:Palladium; D004549:Elastin; D008094:Lithium; D010100:Oxygen
keywords: batteries; nanotubes; proteins; self-assembly; supported catalysts