Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202008422
Keywords
2D; 2D heterostructures; electric vehicles; energy density; power density; regenerative braking; self‐ discharge; supercapacitors
Categories
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Korean government (MSIT) [2018R1A4A1025998, 2019R1A2C3009747, 2020R1A2C2007366]
- National Research Foundation of Korea [2020R1A2C2007366] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The development of high-performance electrodes is crucial for increasing the energy density of supercapacitors and utilizing them in electric vehicles. The designed siloxene-graphene heterostructure electrode-based symmetric supercapacitor delivers high energy density and operates over a wide temperature range, making them suitable for automotive applications.
The development of high-performance electrodes that increase the energy density of supercapacitors (SCs) (without compromising their power density) and have a wide temperature tolerance is crucial for the application of SCs in electric vehicles. Recent research has focused on the preparation of multicomponent materials to form electrodes with enhanced electrochemical properties. Herein, a siloxene-graphene (rGO) heterostructure electrode-based symmetric SC (SSC) is designed that delivers a high energy density (55.79 Wh kg(-1)) and maximum power density of 15 000 W kg(-1). The fabricated siloxene-rGO SSC can operate over a wide temperature range from -15 to 80 degrees C, which makes them suitable for applications in automobiles. This study shows the practical applicability of siloxene-rGO SSC to drive an electric car as well as to capture the braking energy in a regenerative brake-electric vehicle prototype. This work opens new directions for evaluating the use of siloxene-rGO SSC as suitable energy devices in electric vehicles.
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