title: High Pseudocapacitive Performance of MnO2 Nanowires on Recyclable Electrodes.
abstract: Manganese oxides are promising pseudocapacitve materials for achieving both high power and energy densities in pseudocapacitors. However, it remains a great challenge to develop MnO2 -based high-performance electrodes due to their low electrical conductance and poor stability. Here we show that MnO2 nanowires anchored on electrochemically modified graphite foil (EMGF) have a high areal capacitance of 167 mF cm(-2) at a discharge current density of 0.2 mA cm(-2) and a high capacitance retention after 5000 charge/discharge cycles (115 %), which are among the best values reported for any MnO2 -based hybrid structures. The EMGF support can also be recycled and the newly deposited MnO2 -based hybrids retain similarly high performance. These results demonstrate the successful preparation of pseudocapacitors with high capacity and cycling stability, which may open a new opportunity towards a sustainable and environmentally friendly method of utilizing electrochemical energy storage devices.
authors.affiliation: CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia. zhaojun.han@csiro.au.
authors.forename: Zhao Jun
authors.initials: ZJ
authors.lastname: Han
authors.affiliation: State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Bo
authors.affiliation: CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia.
authors.forename: Dong Han
authors.initials: DH
authors.lastname: Seo
authors.affiliation: CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia.
authors.forename: Shafique
authors.initials: S
authors.lastname: Pineda
authors.affiliation: Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore, Singapore.
authors.forename: Ye
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore, Singapore.
authors.forename: Hui Ying
authors.initials: HY
authors.lastname: Yang
authors.affiliation: CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia.|School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
authors.forename: Kostya Ken
authors.initials: KK
authors.lastname: Ostrikov
mesh_terms: D025802:Electric Capacitance; D004563:Electrochemistry; D004566:Electrodes; D017895:Manganese Compounds / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D059027:Recycling
chemical_list: D017895:Manganese Compounds; D010087:Oxides; C027424:manganese oxide
keywords: electrochemistry; manganese oxide; nanowires; pseudocapacitors; stability