Tuning the morphologies of MnO/C hybrids by space constraint assembly of Mn-MOFs for high performance Li ion batteries

Sun, Dan, Tang, Yougen, Ye, Delai, Yan, Jun, Zhou, Haoshen and Wang, Haiyan (2017) Tuning the morphologies of MnO/C hybrids by space constraint assembly of Mn-MOFs for high performance Li ion batteries. ACS Applied Materials and Interfaces, 9 6: 5254-5262. doi:10.1021/acsami.6b14801


Author Sun, Dan
Tang, Yougen
Ye, Delai
Yan, Jun
Zhou, Haoshen
Wang, Haiyan
Title Tuning the morphologies of MnO/C hybrids by space constraint assembly of Mn-MOFs for high performance Li ion batteries
Journal name ACS Applied Materials and Interfaces   Check publisher's open access policy
ISSN 1944-8252
1944-8244
Publication date 2017-02-15
Sub-type Article (original research)
DOI 10.1021/acsami.6b14801
Open Access Status Not yet assessed
Volume 9
Issue 6
Start page 5254
End page 5262
Total pages 9
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
Morphology controllable fabrication of electrode materials is of great significance but is still a major challenge for constructing advanced Li ion batteries. Herein, we propose a novel space constraint assembly approach to tune the morphology of Mn(terephthalic acid) (PTA)-MOF, in which benzonic acid was employed as a modulator to adjust the available MOF assembly directions. As a result, Mn(PTA)-MOFs with microquadrangulars, microflakes, and spindle-like microrods morphologies have been achieved. MnO/C hybrids with preserved morphologies were further obtained by self-sacrificial and thermal transformation of Mn(PTA)-MOFs. As anodes for Li ion batteries, these morphologies showed great influence on the electrochemical properties. Owing to the abundant porous structure and unique architecture, the MnO/C spindle-like microrods demonstrated superior electrochemical properties with a high reversible capacity of 1165 mAh g-1 at 0.3 A g-1, excellent rate capability of 580 mAh g-1 at 3 A g-1, and no considerable capacity loss after 200 cycles at 1 A g-1. This strategy could be extended to engineering the morphology of other MOF-derived functional materials in various structure-dependent applications.
Keyword Li ion battery
Metal-organic frameworks
MnO/C anode
Morphology tuning
Space constraint assembly
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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