Catecholamine-Functionalized Reduced Graphene Oxide: A Scalable Carbon Host for Stable Cycling in Lithium–Sulfur Batteries
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Catecholamine-Functionalized Reduced Graphene Oxide: A Scalable Carbon Host for Stable Cycling in Lithium–Sulfur Batteries
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| Creator |
Abdul Ahada, S.
Ramesh Kumara, P. Kim, Joo-Hyung Kim, Dong Jun Ragupathy, P. |
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| Subject |
Lithium batteries
Electrochemical Power Sources |
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| Description |
The Lithium–Sulfur battery is a promising high performance battery candidate for large-scale application
on account of its high theoretical specific capacity. However, it has come up short on delivering long cycle
life mainly due to the formation of soluble polysulfides, which results in the loss of active material during
redox processes. In this study, we prepared three different graphene oxide based carbon hosts
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graphene oxide (GO), thermally reduced GO (t-rGO) and dopamine-assisted chemically reduced GO (crGO)
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and investigated their physical and electrochemical properties as a sulfur cathode. We found
significant absorbance of polysulfides on the c-rGO host, which provided stable discharge capacity of
601 mAh g�1 at 0.5C for up to 300 cycles. This stable cycling behavior is further identified by in-situ UV–
vis spectroscopy and ex-situ X-ray photoelectron spectroscopy, confirming the minimization of
polysulfide dissolution toward the electrolyte through the adsorption of polydopamine coating.
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| Publisher |
Elsevier B.V.
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| Date |
2017-06-13
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3223/1/057-2017.pdf
Abdul Ahada, S. and Ramesh Kumara, P. and Kim, Joo-Hyung and Kim, Dong Jun and Ragupathy, P. (2017) Catecholamine-Functionalized Reduced Graphene Oxide: A Scalable Carbon Host for Stable Cycling in Lithium–Sulfur Batteries. Electrochimica Acta, 246. pp. 451-458. ISSN 0013-4686 |
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| Relation |
http://www.e lsevier.com/loca te/ele cta cta
http://cecri.csircentral.net/3223/ |
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