Research Center of Graphic Communication, Printing and Packaging, Wuhan University, Wuhan 430072, China

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 33권 / 3호
ㆍ저자명 : Yucan Zhu, Long Peng, Song Chen, Yuchao Feng, Jianxing Xia, Wei Wang, Liang Chen, Hong Yin, Minjie Zhou, Zhaohui Hou

목차

Constructing all-in-one graphene-based supercapacitors for electrochemical energy storage via interface integration strategy
Abstract
1 Introduction
2 Experimental section
2.1 Materials
2.2 Fabrication of SGO and GH films
2.3 Fabrication of FGSCs devices
2.4 Materials characterization
2.5 Electrochemical measurements
3 Results and discussion
3.1 Preparation and characterization of the HQ-rGO films
3.2 Electrochemical performance of the FGSCs
4 Conclusion
Anchor 14
Acknowledgements
References

영어 초록

With the rapid development of flexible wearable electronic products, flexible all graphene-based supercapacitors (FGSCs) with reduced graphene oxide rGO//graphene oxide (GO)//rGO structure have attracted substantial attention due to their unique structures and energy storage mechanism. However, restricted by design idea and preparation technology, improvement of capacitance performance for the FGSCs is not obvious recently. Herein, we demonstrate that an interface integration strategy of constructing the high-performance FGSCs with compact structure. Hydroquinone (HQ)-modified rGO (HQ-rGO) films (electrode materials) and sulfuric acid-intercalated GO films (electrolyte/separator) are assembled into the FGSCs utilizing hydrogen bonding and capillary contractility. The HQ further improves the electrochemical capacitance of electrode materials. The synergistic effect of the hydrogen bonding and capillary contractility guarantees compact and stable structure of the device. The resulting FGSCs exhibit an excellent areal capacitance of 804.6 mF cm− 2 (@2 mA cm− 2) and 441 mF cm− 2 (@30 mA cm− 2), and their highest energy and power densities can achieve 109.5 μWh cm− 2 and 21,060 μW cm− 2, respectively. These performances are superior to other all-in-one graphene-based SCs reported. Therefore, the construction technology of the FGSCs is a promising for developing all graphene-based SCs with high-performance.

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