|
Type |
Oral Presentation |
Area |
Oral Presentation for Young Scientist in Environmental and Energy Chemistry |
Room No. |
Room 201B |
Time |
THU 10:50-: |
Code |
ENVR.O-6 |
Subject |
Synthesis of interconnected porous carbon nanosheets with controllable pore size and their use as electrode material for supercapacitor |
Authors |
JIYOUNG LEE, Woo Kyung Cho1, Bongsoo Kim*, Hana Yoon2,* Department of Chemistry, Korea Advanced Institute of Science and Technology, Korea 1Department of Chemistry, Chungnam National University, Korea 2Separation and Conversion Materials Research, Korea Institute of Energy Research, Korea |
Abstract |
Interconnected porous carbon nanosheets (IPCNs) have recently received great attention as the electrode materials of electrochemical capacitors, as adsorbents, and as catalytic supports because of their high surface area, efficient ion transport, and three-dimensional (3D) structure. Herein, IPCNs with controllable pore-size distributions, ranging from micro- to mesoporous, are synthesized by pyrolysis of alkali metal citrates. Microporous, mesoporous, and hierarchical micro/mesoporous IPCNs are produced. Particularly, the hierarchical micro/mesoporous IPCNs derived from the mixture of potassium and sodium citrates in a weight ratio of 8:2 show high specific capacitance (∼200 F/g at 5 mV/s), excellent rate capability and cyclability. Furthermore, the mechanism of IPCN formation is studied. The alkali metal carbonate formed during heat treatment of alkali metal citrate is expected to act as both activation agents and templates for carbon nanosheets. |
E-mail |
clovers77@naver.com |
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