Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이정호 | - |
dc.date.accessioned | 2019-05-07T02:35:25Z | - |
dc.date.available | 2019-05-07T02:35:25Z | - |
dc.date.issued | 2017-07 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v. 5, No. 27, Page. 13994-14002 | en_US |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.issn | 2050-7496 | - |
dc.identifier.uri | http://pubs.rsc.org/-/content/articlehtml/2017/ta/c7ta02215h | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/103458 | - |
dc.description.abstract | In this work, we demonstrate a "three birds one stone" strategy for preparing 1D N-doped porous carbon nanotubes embedded with core-shell Co@CoOx nanoparticles (Co@CoOx/NCNTs) from bimetallic ZnO@Zn/Co-ZIF nanowires. The ZnO nanowires played three roles: (i) ZnO acted as a template for 1D metal-organic framework (MOF) growth, (ii) in situ evaporation of Zn during pyrolysis prevented the aggregation of the carbon framework and benefited the formation of hierarchical pores, and (iii) the excess Oxygen species released from ZnO in situ reacted with metallic cobalt nanoparticles during pyrolysis, leading to the configuration of a Co@CoOx core-shell structure. The as-prepared 1D Co@CoOx/NCNTs exhibited excellent oxygen reduction reaction performance, including a high kinetic current (4.6 times better compared to 20 wt% Pt/C at 0.7 V), a low Tafel slope of 80 mV dec(-1), outstanding stability, and strong tolerance to CH3OH crossover. The assembled Zn-air batteries with Co@CoOx/NCNTs yielded high open-circuit voltage (1.52 V), superior stability (over 100 h of operation), and unprecedented rate performance that ranged from 1 to 500 mA cm(-2), while existing batteries have never achieved a galvanostatic discharge current density larger than 300 mA cm(-2). Such exceptional rate capability was ascribed to the formation of a uniform interconnected nanotube network, facilitated electron transport, and an enlarged electrochemically accessible surface area in the unique 1D porous tubular structure. | en_US |
dc.description.sponsorship | Financial support from the National Natural Science Foundation of China (Grant No. 21403280 & 21401083) is acknowledged. X. Song is grateful for the financial support by SKL of Xiamen University of China (No. 201509). This work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2017R1A2B3006941). EXAFS studies were carried out at the BL14W1 beamline in the Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, China (16ssrf00787). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.subject | METAL-ORGANIC FRAMEWORK | en_US |
dc.subject | HYDROGEN EVOLUTION REACTION | en_US |
dc.subject | REDUCTION REACTION | en_US |
dc.subject | TEMPLATING SYNTHESIS | en_US |
dc.subject | GRAPHENE | en_US |
dc.subject | CATALYSTS | en_US |
dc.subject | NANOPARTICLES | en_US |
dc.subject | NANOSHEETS | en_US |
dc.subject | ELECTRODE | en_US |
dc.subject | ARRAYS | en_US |
dc.title | In situ directional formation of Co@CoOx-embedded 1D carbon nanotubes as an efficient oxygen electrocatalyst for ultra-high rate Zn-air batteries | en_US |
dc.type | Article | en_US |
dc.relation.no | 27 | - |
dc.relation.volume | 5 | - |
dc.identifier.doi | 10.1039/c7ta02215h | - |
dc.relation.page | 13994-14002 | - |
dc.relation.journal | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.contributor.googleauthor | Lin, Chao | - |
dc.contributor.googleauthor | Shinde, Sambhaji S | - |
dc.contributor.googleauthor | Jiang, Zheng | - |
dc.contributor.googleauthor | Song, Xiaokai | - |
dc.contributor.googleauthor | Sun, Yu | - |
dc.contributor.googleauthor | Guo, Linli | - |
dc.contributor.googleauthor | Zhang, Hao | - |
dc.contributor.googleauthor | Jung, Jin-Young | - |
dc.contributor.googleauthor | Li, Xiaopeng | - |
dc.contributor.googleauthor | Lee, Jung-Ho | - |
dc.relation.code | 2017000065 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | jungho | - |
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