CeO2@C derived from benzene carboxylate bridged metal-organic frameworks: Ligand induced morphology evolution and influence on the electrochemical properties as a lithium-ion battery anode

Sandipan Maiti, Tanumoy Dhawa, Awadesh Kumar Mallik, Sourindra Mahanty

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We report herein a facile metal-organic framework (MOF) derived route for the synthesis of carbon embedded CeO2 (CeO2@C) with a pre-designed shape-specific morphology by varying the organic linker and by using PVP as the structure directing agent. It is found that the general morphological features of the parent MOF are mimicked by the derived oxide. Four different linkers have been used to prepare CeO2@C particles with three different shapes-spherical, bar-shaped and thin plate-like. A probable formation mechanism is discussed based on metal-ligand coordination. Influence of the morphology on the electrochemical properties as a lithium-ion battery (LIB) anode has been studied in coin cells vs. Li/Li+. The spherically shaped CeO2@C-14 shows a superior performance with a maximum specific capacity of 715 mA h g-1 at 0.05 mA cm-2, good rate performance (413 mA h g-1 at 0.5 mA cm-2) and cycling stability (∼94% capacity retention after 100 cycles). The present results demonstrate that the major limitations of metal oxide anodes-volume expansion during lithiation/delithiation, rate performance and capacity fading upon cycling-could be overcome to a great extent by adopting the two-way approach of morphology design through the MOF route and in situ embedded carbon matrix.

Original languageEnglish
Pages (from-to)288-298
Number of pages11
JournalSustainable Energy and Fuels
Volume1
Issue number2
DOIs
StatePublished - 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

Funding

The authors thank Director, CSIR-CGCRI for kind permission to publish this work. S. Maiti thanks CSIR India for a senior research fellowship. Financial support from SERB, DST India vide project number EMR/2104/000729 is gratefully acknowledged.

FundersFunder number
Department of Science and Technology, Ministry of Science and Technology, IndiaEMR/2104/000729
Council of Scientific and Industrial Research, India
Science and Engineering Research Board

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