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Synergistic nanoarchitecture of mesoporous carbon and carbon nanotubes for lithium-oxygen batteries

Title
Synergistic nanoarchitecture of mesoporous carbon and carbon nanotubes for lithium-oxygen batteries
Authors
Kim, YeongsuYun, JonghyeokShin, Hyun-SeopJung, Kyu-NamLee, Jong-Won
DGIST Authors
Kim, Yeongsu; Yun, Jonghyeok; Shin, Hyun-Seop; Jung, Kyu-Nam; Lee, Jong-Won
Issue Date
2021-06
Citation
Nano Convergence, 8(1), 1-8
Type
Article
Author Keywords
Lithium-oxygen batteryMesoporous carbonCarbon nanotubeElectrochemistry
Keywords
ELECTRICAL-CONDUCTIVITYLI-O-2PERFORMANCECATHODECATALYSTNANOPARTICLESNANOSHEETSREDUCTIONBLACKSMETAL-ORGANIC FRAMEWORKS
ISSN
2196-5404
Abstract
A rechargeable lithium–oxygen battery (LOB) operates via the electrochemical formation and decomposition of solid-state Li2O2 on the cathode. The rational design of the cathode nanoarchitectures is thus required to realize high-energy-density and long-cycling LOBs. Here, we propose a cathode nanoarchitecture for LOBs, which is composed of mesoporous carbon (MPC) integrated with carbon nanotubes (CNTs). The proposed design has the advantages of the two components. MPC provides sufficient active sites for the electrochemical reactions and free space for Li2O2 storage, while CNT forests serve as conductive pathways for electron and offer additional reaction sites. Results show that the synergistic architecture of MPC and CNTs leads to improvements in the capacity (~ 18,400 mAh g− 1), rate capability, and cyclability (~ 200 cycles) of the CNT-integrated MPC cathode in comparison with MPC. © 2021, The Author(s).
URI
http://hdl.handle.net/20.500.11750/15426
DOI
10.1186/s40580-021-00268-5
Publisher
Korea Nano Technology Research Society
Related Researcher
  • Author Lee, Jong-Won Laboratory for Electrochemical Energy Materials and Interfaces
  • Research Interests 이차전지, 연료전지, 재료전기화학, 나노에너지소재
Files:
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Collection:
Department of Energy Science and EngineeringLaboratory for Electrochemical Energy Materials and Interfaces1. Journal Articles


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