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- Title
Robust Design of Dual‐Phasic Carbon Cathode for Lithium–Oxygen Batteries.
- Authors
Pham, Hien Thi Thu; Kim, Yeongsu; Kim, Young‐Jun; Lee, Jong‐Won; Park, Min‐Sik
- Abstract
Given that the performance of a lithium–oxygen battery (LOB) is determined by the electrochemical reactions occurring on the cathode, the development of advanced cathode nanoarchitectures is of great importance for the realization of high‐energy‐density, reversible LOBs. Herein, a robust cathode design is proposed for LOBs based on a dual‐phasic carbon nanoarchitecture. The cathode is composed of an interwoven network of porous metal–organic framework (MOF) derived carbon (MOF‐C) and conductive carbon nanotubes (CNTs). The dual‐phasic nanoarchitecture incorporates the advantages of both components: MOF‐C provides a large surface area for the oxygen reactions and a large pore volume for Li2O2 storage, and CNTs provide facile pathways for electron and O2 transport as well as additional void spaces for Li2O2 accommodation. It is demonstrated that the synergistic nanoarchitecturing of the dual‐phasic MOF‐C/CNT material results in promising electrochemical performance of LOBs, as evidenced by a high discharge capacity of ≈10 050 mAh g−1 and a stable cycling performance over 75 cycles.
- Subjects
CATHODES; GRAPHITIZATION; ELECTRIC batteries; METAL-organic frameworks; ELECTRON transport; CARBON nanotubes
- Publication
Advanced Functional Materials, 2019, Vol 29, Issue 31, pN.PAG
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201902915