title: β-FeOOH nanorod bundles with highly enhanced round-trip efficiency and extremely low overpotential for lithium-air batteries.
abstract: β-FeOOH nanorod (NR) catalysts prepared by ultrasonic-irradiated chemical synthesis enabled lithium-air cells to have high round-trip efficiency and extremely low overpotential as well as an outstanding rate capability. Good catalytic activities of the β-FeOOH NR bundle could be ascribed to its crystal structure, which consists of 2 × 2 tunnels formed by edge- and corner-sharing Fe(O,OH)6 octahedra as well as to its one-dimensional morphology, which makes the configured electrode highly porous, indicating that the -OOH-based catalyst can be a good substitute for oxide-base catalysts in lithium-air batteries. The ultrasonic-irradiated chemical synthesis suggested here may be a good solution to optimize the morphology of catalyst materials for maximum catalytic activity.
authors.affiliation: Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 100-715, Republic of Korea. dake1234@dongguk.edu.
authors.forename: Jaepyeong
authors.initials: J
authors.lastname: Jung
authors.forename: Kyeongse
authors.initials: K
authors.lastname: Song
authors.forename: Doo Ri
authors.initials: DR
authors.lastname: Bae
authors.forename: Sung Woo
authors.initials: SW
authors.lastname: Lee
authors.forename: Gaehang
authors.initials: G
authors.lastname: Lee
authors.forename: Yong-Mook
authors.initials: YM
authors.lastname: Kang
mesh_terms: D000388:Air; D002384:Catalysis; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D005290:Ferric Compounds; C092844:ferric oxyhydroxide; D008094:Lithium