Hybrid MnO2 film with agarose gel for enhancing the structural integrity of thin film supercapacitor electrodes.
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.
World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), Institute of Chemical Processes, School of Chemical and Biological Engineering, College of Engineering, Seoul National University , Seoul, 151-742, Republic of Korea.
Soomin
S
Park
Inho
I
Nam
Gil-Pyo
GP
Kim
Jeong Woo
JW
Han
Jongheop
J
Yi