Guest Editors
Jitao Li, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, China.
Dr. Jitao Li is interested in energy technologies (solar cell, power battery, supercapacitor, etc.) and optoelectronic technologies. In these fields, He has released more than 80 achievements including research papers and invention patents, and reviewed at least 80 manuscripts for over 20 journals. He has been appointed as editorial board member and reviewer board member for several international journals.
Dingyu Yang, Professor, Chengdu University of Information Technology, China.
Dr. Dingyu Yang is Academic Candidate Leader of Sichuan Province, and director of Youth Federation of Sichuan Science and Technology, China. He has been engaged in teaching and scientific research in the field of semiconductor materials and new energy technology for a long time, focusing on broadband gap photodetectors, high-efficiency thin-film solar cells and new energy storage devices. He has published over 100 journal papers and hosted more than 10 national and provincial research projects.
Summary
The excessive use of fossil fuels
has caused serious environment pollution. The growing contradiction between
energy demand and environmental issues has led to the research and development
of efficient, clean and sustainable energy storage and conversion technologies.
As a new type of energy storage device between electrolytic capacitors and
secondary batteries, supercapacitors have attracted much attention for their
high power density, rapid charge and discharge, and long cycle life.
Nevertheless, most materials for supercapacitors are not really
environment-friendly due to some shortcomings. 1) Most materials are not renewable, and the irreversible
resource consumption is particularly unfavorable for those with scarce raw
materials, e.g., precious metal oxides (RhO, IrO, etc.) used as electrode
materials. 2) Some non-green materials are applied, such as
acetonitrile with toxicity, an organic compound used as electrolyte, which
causes unavoidable secondary environmental pollution from waste
supercapacitors. Meanwhile, 3) the preparation process of some materials is non-green,
although these materials themselves may be environmental-friendly, for
instance, when graphene oxidized by strong oxidant is used to prepare graphene
electrode, the reducing agent used may be highly toxic.
Currently,
developing renewable materials (e.g., renewable lignin as electrolytes) and
green materials are expected to deal with the future environmental problems
caused by energy storage devices. Therefore, the Special Issue is proposed to
discuss the advances in renewable materials and green materials for
supercapacitors, which will contribute innovation strategies for development of
supercapacitors. The scope of interests includes but
is not limited to the following topics:
1) Renewable materials for
supercapacitors,
2) Recyclability of materials for
supercapacitors,
3) Green preparation of materials for
supercapacitors,
4) Non-toxic or low-toxic materials
for supercapacitors,
5) Other pollution-free materials for
supercapacitors.
Keywords
Supercapacitors, Renewable materials, Green materials, Clean energy, Environment-friendly
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