Oxygen/Fluorine Dual‐Doped Porous Carbon Nanopolyhedra Enabled Ultrafast and Highly Stable Potassium Storage

2019 ◽  
Vol 29 (49) ◽  
pp. 1906126 ◽  
Author(s):  
Jian Lu ◽  
Changlai Wang ◽  
Haolei Yu ◽  
Shipeng Gong ◽  
Guoliang Xia ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Oxygen Fluorine

Ultrathin Carbon Nanosheets for Highly-efficient Capacitive K-ion and Zn-ion Storage

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Metal Ion ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
High Efficient ◽  
Ion Storage

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>

Radar Absorbing Properties of Light Radar Absorbing Materials Based on Hollow-porous Carbon Fibers

2009 ◽  
Vol 24 (2) ◽  
pp. 320-324 ◽  
Author(s):  
Wei XIE ◽  
Hai-Feng CHENG ◽  
Zeng-Yong CHU ◽  
Zhao-Hui CHEN ◽  
Yong-Jiang ZHOU
Keyword(s):  
Carbon Fibers ◽  
Porous Carbon ◽  
Absorbing Materials

CO2 Capture & Separation in Microporous Materials: A Comparison Between Porous Carbon and Flexible MOFs

2018 ◽  
Vol 28 (7) ◽  
pp. 417-422
Author(s):  
Minji Jung ◽  
Seoha Park ◽  
Hyunchul Oh ◽  
Kwi-il Park
Keyword(s):  
Porous Carbon ◽  
Microporous Materials

Single Mn atom anchored on N-doped porous carbon as highly efficient Fenton-like catalyst for the degradation of organic contaminants

2020 ◽  
Vol 279 ◽  
pp. 119363 ◽  
Author(s):  
Jingren Yang ◽  
Deqian Zeng ◽  
Qinggang Zhang ◽  
Ruofan Cui ◽  
Muhammad Hassan ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Organic Contaminants ◽  
Highly Efficient

scholarly journals The carbonization of aromatic molecules with three-dimensional structures affords carbon materials with controlled pore sizes at the Ångstrom-level

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Tomoki Ogoshi ◽  
Yuma Sakatsume ◽  
Katsuto Onishi ◽  
Rui Tang ◽  
Kazuma Takahashi ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Materials ◽  
Carbon Sources ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
Thermal Polymerization ◽  
Sodium Ion Battery ◽  
Pore Sizes ◽  
Aromatic Molecules ◽  
Template Methods

AbstractCarbon materials with controlled pore sizes at the nanometer level have been obtained by template methods, chemical vapor desorption, and extraction of metals from carbides. However, to produce porous carbons with controlled pore sizes at the Ångstrom-level, syntheses that are simple, versatile, and reproducible are desired. Here, we report a synthetic method to prepare porous carbon materials with pore sizes that can be precisely controlled at the Ångstrom-level. Heating first induces thermal polymerization of selected three-dimensional aromatic molecules as the carbon sources, further heating results in extremely high carbonization yields (>86%). The porous carbon obtained from a tetrabiphenylmethane structure has a larger pore size (4.40 Å) than those from a spirobifluorene (4.07 Å) or a tetraphenylmethane precursor (4.05 Å). The porous carbon obtained from tetraphenylmethane is applied as an anode material for sodium-ion battery.

Fabrication, structure and supercapacitance of flexible porous carbon nanobelt webs with enhanced inter-fiber connection

2021 ◽  
Vol 543 ◽  
pp. 148783
Author(s):  
Chang Ma ◽  
Erchuang Cao ◽  
Mahmut Dirican ◽  
Nakarin Subjalearndee ◽  
Hui Cheng ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Fiber Connection
Sign in / Sign up

Export Citation Format

Share Document