title: In Situ-Grown ZnCo2O4 on Single-Walled Carbon Nanotubes as Air Electrode Materials for Rechargeable Lithium-Oxygen Batteries.
abstract: The development of highly efficient catalysts is critical for the practical application of lithium-oxygen (Li-O2) batteries. Nanosheet-assembled ZnCo2O4 (ZCO) microspheres and thin films grown in situ on single-walled carbon nanotube (ZCO/SWCNT) composites as high-performance air electrode materials for Li-O2 batteries are reported. The in situ grown ZCO/SWCNT electrodes delivered high discharge capacities, decreased the onset of the oxygen evolution reaction by 0.9 V during the charging process, and led to longer cycling stability. These results indicate that in situ grown ZCO/SWCNT composites can be used as highly efficient air electrode materials for oxygen reduction and evolution reactions. The enhanced catalytic activity displayed by the uniformly dispersed ZCO catalyst on nanostructured electrodes is expected to inspire further development of other catalyzed electrodes for Li-O2 batteries and other applications.
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA. wu.xu@pnnl.gov.
authors.forename: Wu
authors.initials: W
authors.lastname: Xu
authors.affiliation: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Yan
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Bhattacharya
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Ruiguo
authors.initials: R
authors.lastname: Cao
authors.affiliation: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Mark E
authors.initials: ME
authors.lastname: Bowden
authors.affiliation: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Mark H
authors.initials: MH
authors.lastname: Engelhard
authors.affiliation: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
authors.forename: Chong-Min
authors.initials: CM
authors.lastname: Wang
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA. jiguang.zhang@pnnl.gov.
authors.forename: Ji-Guang
authors.initials: JG
authors.lastname: Zhang
mesh_terms: D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D011211:Electric Power Supplies; D004566:Electrodes; D008094:Lithium / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008863:Microspheres; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013499:Surface Properties; D014961:X-Ray Diffraction; D017967:Zinc Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D037742:Nanotubes, Carbon; D017967:Zinc Compounds; D003035:Cobalt; D008094:Lithium; D010100:Oxygen
keywords: carbon; electrochemistry; heterogeneous catalysis; lithium; nanostructures