Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 20, Pages 9908-9912Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am403532m
Keywords
supercapacitor; electrochemistry; agarose gel; manganese oxide; areal capacitance
Funding
- WCU (World Class University) program through the National Research Foundation of Korea
- Ministry of Education, Science and Technology [R31-10013]
- Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Knowledge Economy [2012T100100511]
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We report on the fabrication of a robust hybrid film containing MnO2 for achieving large areal capacitances. An agarose gel, as an ion-permeable and elastic layer coated on a current collector, plays a key role in stabilizing the deposited pseudocapacitive MnO2. Cyclic voltammetry and electrochemical impedance spectroscopy data indicate that the hybrid electrode is capable of exhibiting a high areal capacitance up to 52.55 mF cm(-2), with its superior structural integrity and adhesiveness to the current collector being maintained, even at a high MnO2 loading.
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