journal article·2024-09-03

Direct Growth of Vertical Graphene on Fiber Electrodes and Its Application in Alternating Current Line-Filtering Capacitors

Shichen Xu, Chao Shen, Zhisheng Peng, Jiandong Wu, Zhuo Chen, Xinyu Zhang, Nannan Ji, Muqiang Jian, Mingmao Wu, Xin Gao, Jin Zhang

ACS Nano· Volume 18· Issue 35
Publisher page

Abstract

Fiber-shaped electrochemical capacitors (FSECs) have garnered substantial attention to emerging portable, flexible, and wearable electronic devices. However, achieving high electronic and ionic conductivity in fiber electrodes while maintaining a large specific surface area is still a challenge for enhancing the capacitance and rapid response of FSECs. Here, we present an electric-field-assisted cold-wall plasma-enhanced chemical vapor (EFCW-PECVD) method for direct growth of vertical graphene (VG) on fiber electrodes, which is incorporated in the FSECs. The customized reactor mainly consists of two radio frequency coils: one for plasma generation and the other for substrate heating. Precise temperature control can be achieved by adjusting the conductive plates and the applied power. With induction heating, only the substrate is heated to above 500 °C within just 5 min, maintaining a low temperature in the gas phase for the growth of VG with a high quality. Using this method, VG was easily grown on metallic fibers. The VG-coated titanium fibers for FSECs exhibit an ultrahigh rate performance and quick ion transport, enabling the conversion of an alternating current signal to a direct current signal and demonstrating outstanding filtering capabilities.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Supercapacitor Materials and Fabrication · Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China

Beijing Graphene Institute (BGI), Beijing 100095, P. R. China

College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, P. R. China

College of Engineering, Peking University, Beijing 100871, P. R. China

Key Laboratory of Advanced Materials Technologies, International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, P. R. China

Funding

Beijing National Laboratory for Molecular Sciences · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Fujian Province · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Chinese Academy of Sciences

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