Hierarchical Porous Covalent organic framework/graphene aerogel electrode for High-Performance Supercapacitors

2021 ◽  
Author(s):  
Ning An ◽  
Zhen Guo ◽  
Jiao Xin ◽  
Yuan-Yuan He ◽  
Ke-Feng Xie ◽  
...  
Keyword(s):  
Energy Storage ◽  
Active Sites ◽  
High Performance ◽  
Energy Storage Materials ◽  
Covalent Organic Frameworks ◽  
Graphene Aerogel ◽  
Covalent Organic Framework ◽  
Surface Areas ◽  
Redox Active ◽  
Hierarchical Porous

Redox-active covalent organic frameworks (COFs) are an emerging class of energy storage materials due to their notably abundant active sites, well-defined channels and highly surface areas. However, their poor electrical...

Core-shell nanostructured Zn-Co-O@CoS arrays for high-performance hybrid supercapacitors

2021 ◽  
Author(s):  
Yi He ◽  
Lei Xie ◽  
Shixiang Ding ◽  
Yujia Long ◽  
Xinyi Zhou ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Energy Storage ◽  
Active Sites ◽  
High Performance ◽  
Electronic Conductivity ◽  
Wide Distribution ◽  
Energy Storage Materials ◽  
Core Shell ◽  
Storage Materials ◽  
Hybrid Supercapacitors

Although the zinc oxide (ZnO) with wide distribution is one of the most attractive energy storage materials, the low electronic conductivity and insufficient active sites of bulk ZnO increase the...

Readily Usable Bulk Phenoxazine-Based Covalent Organic Framework Cathode Materials with Superior Kinetics and High Redox Potentials

2021 ◽  
Author(s):  
Zhiying Meng ◽  
Ying Zhang ◽  
Mengqing Dong ◽  
Yue Zhang ◽  
Fengmin Cui ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cathode Materials ◽  
High Surface ◽  
Electrical Energy ◽  
Energy Storage Materials ◽  
Redox Potentials ◽  
Electrical Energy Storage ◽  
Surface Areas ◽  
Redox Sites ◽  
Redox Active

Redox-active covalent organic frameworks (COFs) with dense redox sites are promising electrical energy storage materials with robust architectures, high surface areas, insolubility in electrolytes, and open pores for electrolyte transportation,...

scholarly journals Skeleton Engineering of Isostructural 2D Covalent Organic Frameworks: Orthoquinone Redox-Active Sites Enhanced Energy Storage

CCS Chemistry ◽  
2020 ◽  
pp. 696-706
Author(s):  
Miao Li ◽  
Jingjuan Liu ◽  
Yusen Li ◽  
Guolong Xing ◽  
Xiang Yu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Active Sites ◽  
Covalent Organic Frameworks ◽  
Redox Active

scholarly journals 3D hierarchical porous graphene aerogel with tunable meso-pores on graphene nanosheets for high-performance energy storage

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Long Ren ◽  
K. N. Hui ◽  
K. S. Hui ◽  
Yundan Liu ◽  
Xiang Qi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Current Density ◽  
Active Sites ◽  
High Performance ◽  
Hydrothermal Reaction ◽  
Graphene Nanosheets ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Porous Graphene ◽  
Hierarchical Porous

Abstract New and novel 3D hierarchical porous graphene aerogels (HPGA) with uniform and tunable meso-pores (e.g., 21 and 53 nm) on graphene nanosheets (GNS) were prepared by a hydrothermal self-assembly process and an in-situ carbothermal reaction. The size and distribution of the meso-pores on the individual GNS were uniform and could be tuned by controlling the sizes of the Co3O4 NPs used in the hydrothermal reaction. This unique architecture of HPGA prevents the stacking of GNS and promises more electrochemically active sites that enhance the electrochemical storage level significantly. HPGA, as a lithium-ion battery anode, exhibited superior electrochemical performance, including a high reversible specific capacity of 1100 mAh/g at a current density of 0.1 A/g, outstanding cycling stability and excellent rate performance. Even at a large current density of 20 A/g, the reversible capacity was retained at 300 mAh/g, which is larger than that of most porous carbon-based anodes reported, suggesting it to be a promising candidate for energy storage. The proposed 3D HPGA is expected to provide an important platform that can promote the development of 3D topological porous systems in a range of energy storage and generation fields.

Structure-properties relationship for energy storage redox polymers: a review

2020 ◽  
Vol 40 (5) ◽  
pp. 373-393 ◽  
Author(s):  
Narendra Singh Chundawat ◽  
Nishigandh Pande ◽  
Ghasem Sargazi ◽  
Mazaher Gholipourmalekabadi ◽  
Narendra Pal Singh Chauhan
Keyword(s):  
Energy Storage ◽  
Cost Efficiency ◽  
Energy Storage Materials ◽  
High Scale ◽  
Chemical Structures ◽  
Redox Active ◽  
Potential Applications ◽  
Intelligent Clothing ◽  
The Relationship ◽  
Structure Properties

AbstractRedox-active polymers among the energy storage materials (ESMs) are very attractive due to their exceptional advantages such as high stability and processability as well as their simple manufacturing. Their applications are found to useful in electric vehicle, ultraright computers, intelligent electric gadgets, mobile sensor systems, and portable intelligent clothing. They are found to be more efficient and advantageous in terms of superior processing capacity, quick loading unloading, stronger security, lengthy life cycle, versatility, adjustment to various scales, excellent fabrication process capabilities, light weight, flexible, most significantly cost efficiency, and non-toxicity in order to satisfy the requirement for the usage of these potential applications. The redox-active polymers are produced through organic synthesis, which allows the design and free modification of chemical constructions, which allow for the structure of organic compounds. The redox-active polymers can be finely tuned for the desired ESMs applications with their chemical structures and electrochemical properties. The redox-active polymers synthesis also offers the benefits of high-scale, relatively low reaction, and a low demand for energy. In this review we discussed the relationship between structural properties of different polymers for solar energy and their energy storage applications.

scholarly journals High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES)

2016 ◽  
Author(s):  
James E. Miller ◽  
Andrea Ambrosini ◽  
Sean M. Babiniec ◽  
Eric N. Coker ◽  
Clifford K. Ho ◽  
...  
Keyword(s):  
Energy Storage ◽  
Metal Oxides ◽  
High Performance ◽  
Electricity Production ◽  
Power Cycles ◽  
Redox Active ◽  
Active Metal ◽  
Performance Reduction ◽  
Mixed Ionic Electronic Conductors ◽  
Electronic Conductors

Thermochemical energy storage (TCES) offers the potential for greatly increased storage density relative to sensible-only energy storage. Moreover, heat may be stored indefinitely in the form of chemical bonds via TCES, accessed upon demand, and converted to heat at temperatures significantly higher than current solar thermal electricity production technology and is therefore well-suited to more efficient high-temperature power cycles. The PROMOTES effort seeks to advance both materials and systems for TCES through the development and demonstration of an innovative storage approach for solarized Air-Brayton power cycles and that is based on newly-developed redox-active metal oxides that are mixed ionic-electronic conductors (MIEC). In this paper we summarize the system concept and review our work to date towards developing materials and individual components.

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