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
Collection year 2018
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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