title: Catalytic activity trends of oxygen reduction reaction for nonaqueous Li-air batteries.
abstract: We report the intrinsic oxygen reduction reaction (ORR) activity of polycrystalline palladium, platinum, ruthenium, gold, and glassy carbon surfaces in 0.1 M LiClO(4) 1,2-dimethoxyethane via rotating disk electrode measurements. The nonaqueous Li(+)-ORR activity of these surfaces primarily correlates to oxygen adsorption energy, forming a "volcano-type" trend. The activity trend found on the polycrystalline surfaces was in good agreement with the trend in the discharge voltage of Li-O(2) cells catalyzed by nanoparticle catalysts. Our findings provide insights into Li(+)-ORR mechanisms in nonaqueous media and design of efficient air electrodes for Li-air battery applications.
authors: Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
authors: Yi-Chun
authors: YC
authors: Lu
authors: Hubert A
authors: HA
authors: Gasteiger
authors: Yang
authors: Y
authors: Shao-Horn
mesh_terms: D000388:Air; D002384:Catalysis; D011211:Electric Power Supplies; D008094:Lithium / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*
chemical_list: D008094:Lithium; D010100:Oxygen