Pyrolysis-Free Polymer-Based Oxygen Electrocatalysts

2021 ◽  
Author(s):  
Bingyu Huang ◽  
Longbin Li ◽  
Xiannong Tang ◽  
Weijuan Zhai ◽  
Yaoshuai Hong ◽  
...  
Keyword(s):  
Energy Conversion ◽  
High Performance ◽  
Sustainable Energy ◽  
Vital Role ◽  
Energy Conversion And Storage ◽  
Storage Technologies ◽  
And Storage ◽  
Carbon Based

High performance electrocatalysts play a vital role in various sustainable energy conversion and storage technologies. Though enormous carbon-based materials have been developed and exhibited efficient electrocatalytic ability comparable to precious...

scholarly journals Reversible solid-oxide cells for clean and sustainable energy

Clean Energy ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 175-201 ◽  
Author(s):  
M B Mogensen ◽  
M Chen ◽  
H L Frandsen ◽  
C Graves ◽  
J B Hansen ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Large Scale ◽  
Sustainable Energy ◽  
Solid Oxide ◽  
Electrical Grid ◽  
Transportation Sector ◽  
Sufficient Energy ◽  
Energy Conversion And Storage ◽  
Storage Technologies ◽  
And Storage

Abstract This review gives first a brief view of the potential availability of sustainable energy. It is clear that over 100 times more solar photovoltaic energy than necessary is readily accessible and that practically available wind alone may deliver sufficient energy supply to the world. Due to the intermittency of these sources, effective and inexpensive energy-conversion and storage technology is needed. Motivation for the possible electrolysis application of reversible solid-oxide cells (RSOCs), including a comparison of power-to-fuel/fuel-to-power to other energy-conversion and storage technologies is presented. RSOC electrochemistry and chemistry of H2O, CO2, H2, CO, CnHm (hydrocarbons) and NH3, including thermodynamics and cell performance, are described. The mechanical strength of popular cell supports is outlined, and newly found stronger materials are mentioned. Common cell-degradation mechanisms, including the effect of common impurities in gases and materials (such as S and Si), plus the deleterious effects of carbon deposition in the fuel electrode are described followed by explanations of how to avoid or ease the consequences. Visions of how RSOCs powered by sustainable energy may be applied on a large scale for the transportation sector via power-to-fuel technology and for integration with the electrical grid together with seasonal storage are presented. Finally, a brief comparison of RSOCs to other electrolysis cells and an outlook with examples of actions necessary to commercialize RSOC applications are sketched.

Controllable Synthesis of Ultrathin Layered Transition Metallic Hydroxide/Zeolitic Imidazolate Framework-67 Hybrid Nanosheets for High-Performance Supercapacitors

2021 ◽  
Author(s):  
Chunli Liu ◽  
Yang Bai ◽  
Ji Wang ◽  
Ziming Qiu ◽  
Huan Pang
Keyword(s):  
Charge Transfer ◽  
Energy Conversion ◽  
High Performance ◽  
2D Materials ◽  
Two Dimensional ◽  
Controllable Synthesis ◽  
Zeolitic Imidazolate Framework ◽  
Fast Charge ◽  
Energy Conversion And Storage ◽  
And Storage

Two-dimensional (2D) materials with structures having diverse features are promising for application in energy conversion and storage. A stronger layered orientation can guarantee fast charge transfer along the 2D planes...

scholarly journals Carbon-based electrocatalysts for advanced energy conversion and storage

2015 ◽  
Vol 1 (7) ◽  
pp. e1500564 ◽  
Author(s):  
Jintao Zhang ◽  
Zhenhai Xia ◽  
Liming Dai
Keyword(s):  
Fuel Cells ◽  
Energy Conversion ◽  
Carbon Nanomaterials ◽  
Surface Characteristics ◽  
Reduction Reaction ◽  
Practical Significance ◽  
Metal Free ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Carbon Based

Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) play curial roles in electrochemical energy conversion and storage, including fuel cells and metal-air batteries. Having rich multidimensional nanoarchitectures [for example, zero-dimensional (0D) fullerenes, 1D carbon nanotubes, 2D graphene, and 3D graphite] with tunable electronic and surface characteristics, various carbon nanomaterials have been demonstrated to act as efficient metal-free electrocatalysts for ORR and OER in fuel cells and batteries. We present a critical review on the recent advances in carbon-based metal-free catalysts for fuel cells and metal-air batteries, and discuss the perspectives and challenges in this rapidly developing field of practical significance.

scholarly journals Editorial for the Special Issue on Advanced Energy Conversion and Storage Microdevices

Micromachines ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 138
Author(s):  
Hee-Seok Kim
Keyword(s):  
Energy Conversion ◽  
Environmental Impacts ◽  
Storage Systems ◽  
Sustainable Energy ◽  
Energy Resources ◽  
Special Issue ◽  
Energy Conversion And Storage ◽  
Increasing Demand ◽  
And Storage

Advanced energy conversion and storage systems have attracted much attention in recent decades due to the increasing demand for energy and the environmental impacts of non-sustainable energy resources [...]

scholarly journals A Self-supported Graphene/Carbon Nanotube Hollow Fiber for Integrated Energy Conversion and Storage

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Kai Liu ◽  
Zilin Chen ◽  
Tian Lv ◽  
Yao Yao ◽  
Ning Li ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Hollow Fiber ◽  
High Performance ◽  
Power Conversion ◽  
Hollow Structure ◽  
Hollow Fibers ◽  
Active Materials ◽  
Pani Composite ◽  
Energy Conversion And Storage ◽  
And Storage

AbstractWearable fiber-shaped integrated energy conversion and storage devices have attracted increasing attention, but it remains a big challenge to achieve a common fiber electrode for both energy conversion and storage with high performance. Here, we grow aligned carbon nanotubes (CNTs) array on continuous graphene (G) tube, and their seamlessly connected structure provides the obtained G/CNTs composite fiber with a unique self-supported hollow structure. Taking advantage of the hollow structure, other active materials (e.g., polyaniline, PANI) could be easily functionalized on both inner and outer surfaces of the tube, and the obtained G/CNTs/PANI composite hollow fibers achieve a high mass loading (90%) of PANI. The G/CNTs/PANI composite hollow fibers can not only be used for high-performance fiber-shaped supercapacitor with large specific capacitance of 472 mF cm−2, but also can replace platinum wire to build fiber-shaped dye-sensitized solar cell (DSSC) with a high power conversion efficiency of 4.20%. As desired, the integrated device of DSSC and supercapacitor with the G/CNTs/PANI composite hollow fiber used as the common electrode exhibits a total power conversion and storage efficiency as high as 2.1%. Furthermore, the self-supported G/CNTs hollow fiber could be further functionalized with other active materials for building other flexible and wearable electronics.

Recent Advances of Anion Regulated NiFe-based Electrocatalysts for Water Oxidation

2021 ◽  
Author(s):  
Zhihua Zhai ◽  
Guixing Jia ◽  
Yu Wang ◽  
Xiaoting Chen ◽  
Zhonghua Zhang
Keyword(s):  
Energy Conversion ◽  
Water Oxidation ◽  
Energy Demand ◽  
Alternative Energy ◽  
Anodic Reaction ◽  
Free Alternative ◽  
Recent Advances ◽  
Energy Conversion And Storage ◽  
Storage Technologies ◽  
And Storage

Increasing energy demand has spurred extensive research on the development of efficient and pollution-free alternative energy conversion and storage technologies. Water oxidation is a critically limiting anodic reaction of electrochemical...

Graphitization induced by KOH etching for the fabrication of hierarchical porous graphitic carbon sheets for high performance supercapacitors

2018 ◽  
Vol 6 (29) ◽  
pp. 14170-14177 ◽  
Author(s):  
Fulai Qi ◽  
Zhangxun Xia ◽  
Ruili Sun ◽  
Xuejing Sun ◽  
Xinlong Xu ◽  
...  
Keyword(s):  
Energy Conversion ◽  
High Performance ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Hierarchical Porous ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Koh Etching

Porous graphitic carbons are promising candidates for energy conversion and storage.

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