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Mass Transport Behaviors in Graphene and Polyaniline Heterostructure-Based Microsupercapacitors
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- Chen, Cheng (författare)
- Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China.
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- Huang, Jiaqian (författare)
- Shanghai Jiao Tong Univ, Shanghai Key Lab Elect Insulat & Thermal Aging, State Key Lab Met Matrix Composites, Sch Chem & Chem Engn,Mesoentropy Matter Lab, Shanghai 200240, Peoples R China.
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- Mishukova, Viktoriia (författare)
- KTH,Elektronik och inbyggda system
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- Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China Shanghai Jiao Tong Univ, Shanghai Key Lab Elect Insulat & Thermal Aging, State Key Lab Met Matrix Composites, Sch Chem & Chem Engn,Mesoentropy Matter Lab, Shanghai 200240, Peoples R China. (creator_code:org_t)
- 2021-03-07
- 2021
- Engelska.
- Ingår i: Advanced energy and sustainability research. - : Wiley. - 2699-9412. ; 2:5
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- The development of miniaturized energy storage components with high areal performance for emerging electronics depends on scalable fabrication techniques for thick electrodes and an in-depth understanding of the intrinsic properties of materials. Based on the coprecipitation behavior of electrically exfoliated graphene and reduced graphene oxide–templated polyaniline (PANi) nanoflake, this work develops a simple, green, low-cost, and scalable drop-casted technique to easily fabricate uniform thick electrodes (up to 80 μm) on various substrates. Through using a direct laser writing process, planar microsupercapacitors can be readily attained. As-fabricated flexible all-solid-state microsupercapacitors exhibit an ultrahigh areal capacitance of 172 mF cm−2 at 0.1 A cm−2 and excellent cycling stability of 91% capacitance retention over 2000 cycles at a high current density of 1.0 A cm−2. Furthermore, based on the electrochemical quartz crystal microbalance research result, the pseudocapacitance contribution is mostly provided by the adsorption/desorption of SO42− anions during the protonation process of PANi. This work offers a simple strategy toward superior-performance micro-sized energy devices and a new perspective to understand the origin of the capacitance of composites and heterostructures.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- heterostructures
- laser scribing
- mass transport
- microsupercapacitors
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