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.

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 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.

A bi-functional catalyst for oxygen reduction and oxygen evolution reactions from used baby diapers: α-Fe2O3 wrapped in P and S dual doped graphitic carbon

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64258-64265 ◽  
Author(s):  
Hong Zhao ◽  
Jian Wang ◽  
Chi Chen ◽  
Dengjie Chen ◽  
Yang Gao ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Solid Waste ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Environmental Sustainability ◽  
Graphitic Carbon ◽  
Storage Devices ◽  
Energy Conversion And Storage ◽  
And Storage

The development of energy conversion and storage devices and the disposal of solid waste represent two major challenges for environmental sustainability.

scholarly journals Hierarchical porous graphitic carbon for high-performance supercapacitors at high temperature

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34488-34496 ◽  
Author(s):  
Chong Chen ◽  
Dengfeng Yu ◽  
Gongyuan Zhao ◽  
Lei Sun ◽  
Yinyong Sun ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
High Energy ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Cycle Life ◽  
High Energy Density ◽  
Hierarchical Porous

Developing supercapacitors with high energy density without sacrificing the power density and cycle life has attracted enormous attention.

Ir-based bifunctional electrocatalysts for overall water splitting

2021 ◽  
Author(s):  
Lin-Wei Chen ◽  
Hai-Wei Liang
Keyword(s):  
Hydrogen Production ◽  
Energy Conversion ◽  
Water Splitting ◽  
High Purity ◽  
High Performance ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
High Purity Hydrogen

High-purity hydrogen production by electrocatalytic overall water splitting plays an important role in energy conversion and storage. The development of high-performance bifunctional electrocatalysts that could simultaneously catalyze the cathodic hydrogen...

Polyaniline@MOF fiber derived Fe–Co oxide-based high performance electrocatalyst

2021 ◽  
Vol 45 (1) ◽  
pp. 282-287
Author(s):  
Qiqi Sha ◽  
Jianrong Wang ◽  
Yizhong Lu ◽  
Zhenlu Zhao
Keyword(s):  
Energy Conversion ◽  
High Performance ◽  
Electrochemical Energy Conversion ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Electrochemical Energy

Electrochemical energy conversion and storage are important and coupled with a number of electrocatalytic processes.

Biomass willow catkin-derived Co3O4/N-doped hollow hierarchical porous carbon microtubes as an effective tri-functional electrocatalyst

2017 ◽  
Vol 5 (38) ◽  
pp. 20170-20179 ◽  
Author(s):  
Bin Wang ◽  
Li Xu ◽  
Gaopeng Liu ◽  
Pengfei Zhang ◽  
Wenshuai Zhu ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Porous Carbon ◽  
Electrochemical Reactions ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Energy Conversion And Storage ◽  
And Storage

Oxygen reduction (ORR), oxygen evolution (OER), and hydrogen evolution (HER) reactions are extremely important electrochemical reactions for electrochemical energy conversion and storage.

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