A Novel High‐Energy Hybrid Supercapacitor with an Anatase TiO2–Reduced Graphene Oxide Anode and an Activated Carbon Cathode. Issue 11 (9th July 2013)

• Record Type: Journal Article
• Authors: Kim, Haegyeom; Cho, Min‐Young; Kim, Mok‐Hwa; Park, Kyu‐Young; Gwon, Hyeokjo; Lee, Yunsung; Roh, Kwang Chul; Kang, Kisuk
• Is Part Of: Advanced energy materials. Volume 3:Issue 11(2013:Nov.)
• Page Start: 1500
• Page End: 1506
• Publication Date: 2013-07-09
• Subjects: Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201300467
• Languages: English
• ISSNs: 1614-6832

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A hybrid supercapacitor with high energy and power densities is reported. It comprises a composite anode of anatase TiO₂ and reduced graphene oxide and an activated carbon cathode in a non‐aqueous electrolyte. While intercalation compounds can provide high energy typically at the expense of power, the anatase TiO₂ nanoparticles are able to sustain both high energy and power in the hybrid supercapacitor. At a voltage range from 1.0 to 3.0 V, 42 W h kg⁻¹ of energy is achieved at 800 W kg⁻¹. Even at a 4‐s charge/discharge rate, an energy density as high as 8.9 W h kg⁻¹ can be retained. The high energy and power of this hybrid supercapacitor bridges the gap between conventional batteries with high energy and low power and supercapacitors with high power and low energy.</p> </abstract>