scholarly journals Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 91
Author(s):  
Fitri Aulia Permatasari ◽  
Muhammad Alief Irham ◽  
Satria Zulkarnaen Bisri ◽  
Ferry Iskandar
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Quantum Confinement Effect ◽  
Graphene Quantum Dots ◽  
High Energy ◽  
Carbon Quantum Dots ◽  
High Energy Density ◽  
Research Progress ◽  
Future Challenges ◽  
Carbon Based

Carbon-based Quantum dots (C-QDs) are carbon-based materials that experience the quantum confinement effect, which results in superior optoelectronic properties. In recent years, C-QDs have attracted attention significantly and have shown great application potential as a high-performance supercapacitor device. C-QDs (either as a bare electrode or composite) give a new way to boost supercapacitor performances in higher specific capacitance, high energy density, and good durability. This review comprehensively summarizes the up-to-date progress in C-QD applications either in a bare condition or as a composite with other materials for supercapacitors. The current state of the three distinct C-QD families used for supercapacitors including carbon quantum dots, carbon dots, and graphene quantum dots is highlighted. Two main properties of C-QDs (structural and electrical properties) are presented and analyzed, with a focus on the contribution to supercapacitor performances. Finally, we discuss and outline the remaining major challenges and future perspectives for this growing field with the hope of stimulating further research progress.

scholarly journals Carbon-based quantum particles: an electroanalytical and biomedical perspective

2019 ◽  
Vol 48 (15) ◽  
pp. 4281-4316 ◽  
Author(s):  
Khadijeh Nekoueian ◽  
Mandana Amiri ◽  
Mika Sillanpää ◽  
Frank Marken ◽  
Rabah Boukherroub ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Confinement Effect ◽  
Spherical Carbon ◽  
Quantum Particles ◽  
Carbon Based

Carbon-based quantum particles, especially spherical carbon quantum dots (CQDs) and nanosheets like graphene quantum dots (GQDs), are an emerging class of quantum dots with unique properties owing to their quantum confinement effect.

scholarly journals Research Progress and Key Issues of Hydrodebenzylation of Hexabenzylhexaazaisowurtzitane (HBIW) in the Synthesis of High Energy Density Material Hexanitrohexaazaisowurtzitane (HNIW)

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 409
Author(s):  
Xiaofei Tang ◽  
Rui Zhu ◽  
Tianjing Shi ◽  
Yu Wang ◽  
Xiaochen Niu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Research Effort ◽  
Specific Impulse ◽  
Cost Effective ◽  
High Energy ◽  
High Energy Density ◽  
Research Progress ◽  
Fourth Generation ◽  
Key Issues

High energy density materials (HEDM) are the subject of an extensive research effort in relation to the use of these compounds as components of rocket propellants, powders, and formulations of high-performance explosives. Hexanitrohexaazaisowurtzitane (HNIW, i.e., CL-20) has received much attention in these research fields for its specific impulse, burning rate, ballistics, and detonation velocity. In this paper, the development and performances of the explosives from the first to the fourth generation are briefly summarized, and the synthesis status of the fourth-generation explosive, HNIW, is reviewed. The key issues that restrict the development of industrial amplification synthesis of HNIW are analyzed, and the potential directions of development are proposed. It is pointed out that to synthesize new and efficient catalysts is the key to making the cost-effective manufacturing of CL-20 a reality.

scholarly journals Carbon Based Nanodots in Early Diagnosis of Cancer

2021 ◽  
Vol 9 ◽  
Author(s):  
Gurpal Singh ◽  
Harinder Kaur ◽  
Akanksha Sharma ◽  
Joga Singh ◽  
Hema Kumari Alajangi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Early Stage ◽  
Imaging Techniques ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Diagnostic Methods ◽  
Early Diagnosis Of Cancer ◽  
Successful Treatment Outcome ◽  
Wide Range ◽  
Carbon Based

Detection of cancer at an early stage is one of the principal factors associated with successful treatment outcome. However, current diagnostic methods are not capable of making sensitive and robust cancer diagnosis. Nanotechnology based products exhibit unique physical, optical and electrical properties that can be useful in diagnosis. These nanotech-enabled diagnostic representatives have proved to be generally more capable and consistent; as they selectively accumulated in the tumor site due to their miniscule size. This article rotates around the conventional imaging techniques, the use of carbon based nanodots viz Carbon Quantum Dots (CQDs), Graphene Quantum Dots (GQDs), Nanodiamonds, Fullerene, and Carbon Nanotubes that have been synthesized in recent years, along with the discovery of a wide range of biomarkers to identify cancer at early stage. Early detection of cancer using nanoconstructs is anticipated to be a distinct reality in the coming years.

Facile synthesis of manganese carbonate quantum dots/Ni(HCO3)2–MnCO3 composites as advanced cathode materials for high energy density asymmetric supercapacitors

2015 ◽  
Vol 3 (44) ◽  
pp. 22102-22117 ◽  
Author(s):  
Qi Xun Xia ◽  
Kwan San Hui ◽  
Kwun Nam Hui ◽  
Sung Dae Kim ◽  
Jae Hong Lim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Density ◽  
Cathode Materials ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Manganese Carbonate ◽  
Facile Synthesis ◽  
Asymmetric Supercapacitors ◽  
Cathode Electrode

Well dispersed MnCO3 quantum dots (∼1.2 nm) decorated on Ni(HCO3)2–MnCO3 as a cathode electrode for high performance supercapacitors.

scholarly journals Carbon-based supercapacitors for efficient energy storage

2017 ◽  
Vol 4 (3) ◽  
pp. 453-489 ◽  
Author(s):  
Xuli Chen ◽  
Rajib Paul ◽  
Liming Dai
Keyword(s):  
High Performance ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Energy Sources ◽  
Great Promise ◽  
Wearable Electronics ◽  
Efficient Energy ◽  
Carbon Based

AbstractThe advancement of modern electronic devices depends strongly on the highly efficient energy sources possessing high energy density and power density. In this regard, supercapacitors show great promise. Due to the unique hierarchical structure, excellent electrical and mechanical properties, and high specific surface area, carbon nanomaterials (particularly, carbon nanotubes, graphene, mesoporous carbon and their hybrids) have been widely investigated as efficient electrode materials in supercapacitors. This review article summarizes progress in high-performance supercapacitors based on carbon nanomaterials with an emphasis on the design and fabrication of electrode structures and elucidation of charge-storage mechanisms. Recent developments on carbon-based flexible and stretchable supercapacitors for various potential applications, including integrated energy sources, self-powered sensors and wearable electronics, are also discussed.

Self-assembled polypyrrole nanotubes/MoS2 quantum dots for high performance solid state flexible symmetric supercapacitors

2021 ◽  
Author(s):  
Vijeth Hebri ◽  
Rabah Boukherroub ◽  
Ashokkumar Shankar Pawar ◽  
Vandana Molahalli ◽  
Devendrappa Hundekal
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Soft Template ◽  
Flexible Supercapacitor ◽  
Polypyrrole Nanotubes ◽  
Excellent Cycling Stability

A unique CS–PNT/MoS2 nanocomposite was synthesized using a self-degradable soft template approach and a flexible supercapacitor device is fabricated which shows a high energy density of 32.12 W h kg−1 and excellent cycling stability of 91.2% even after 10 000 cycles.

scholarly journals Research progress of carbon based nanoenzyme and composites in antibacterial field

2021 ◽  
Vol 267 ◽  
pp. 02057
Author(s):  
ChuanXin Zhao ◽  
QiaMin Gu ◽  
GaoYun Chen ◽  
MengBin Yu ◽  
Min Liu
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Simple Structure ◽  
Antibacterial Effect ◽  
Carbon Quantum Dots ◽  
Research Progress ◽  
Antibacterial Materials ◽  
Antibacterial Material ◽  
The Times ◽  
Carbon Based

Due to the abuse of antibiotics, more and more bacteria are resistant to antibiotics. Non antibiotic nano antibacterial materials emerge as the times require. Carbon based nano enzyme is an efficient and environmentally friendly antibacterial material with certain antibacterial effect. It has simple structure and good compatibility. It can be combined with a variety of antibacterial substances to form composite antibacterial materials, expand the scope of antibacterial and improve the antibacterial ability. This paper summarizes the research progress of three kinds of carbon based nanoenzymes including carbon nanotubes, graphene, carbon quantum dots and their composites in the field of antibacterial.

Recent advances in carbon-based dots for electroanalysis

The Analyst ◽  
2016 ◽  
Vol 141 (9) ◽  
pp. 2619-2628 ◽  
Author(s):  
Ying Yulong ◽  
Peng Xinsheng
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Recent Advances ◽  
Carbon Based

Graphene quantum dots (GQDs) and carbon quantum dots (CQDs) demonstrate unique properties in the electroanalysis field, including electroresistance, electrochemiluminescence, electrochemical and photoelectrochemical sensors.

Extremely low loading of carbon quantum dots for high energy density in polyetherimide nanocomposites

2021 ◽  
pp. 133601
Author(s):  
Haoran Xie ◽  
Hang Luo ◽  
Yuan Liu ◽  
Ru Guo ◽  
Xiaobo Ji ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Density ◽  
High Energy ◽  
Carbon Quantum Dots ◽  
High Energy Density

Sensing applications of luminescent carbon based dots

The Analyst ◽  
2015 ◽  
Vol 140 (22) ◽  
pp. 7468-7486 ◽  
Author(s):  
Yongqiang Dong ◽  
Jianhua Cai ◽  
Xu You ◽  
Yuwu Chi
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Luminescence Properties ◽  
Sensing Applications ◽  
Carbon Based

Carbon based dots (CDs) including carbon quantum dots and graphene quantum dots exhibit unique luminescence properties, such as photoluminescence (PL), chemiluminescence (CL) and electrochemiluminescence (ECL).

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