Rational design of uniformly embedded metal oxide nanoparticles into nitrogen-doped carbon aerogel for high-performance asymmetric supercapacitors with a high operating voltage window

2016 ◽  
Vol 4 (42) ◽  
pp. 16576-16587 ◽  
Author(s):  
Guanglin Sun ◽  
Hangyu Xie ◽  
Jiabing Ran ◽  
Liya Ma ◽  
Xinyu Shen ◽  
...  
Keyword(s):  
High Performance ◽  
Rational Design ◽  
Metal Oxide Nanoparticles ◽  
Negative Electrode ◽  
Carbon Aerogel ◽  
Operating Voltage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

We report the design of a novel asymmetric supercapacitor (ASC) based on MnO/carbon aerogel (MnO/NCA) as the positive electrode and Fe2O3/carbon aerogel (Fe2O3/NCA) as the negative electrode.

Incorporation of homogeneous Co3O4 into a nitrogen-doped carbon aerogel via a facile in situ synthesis method: implications for high performance asymmetric supercapacitors

2016 ◽  
Vol 4 (24) ◽  
pp. 9542-9554 ◽  
Author(s):  
Guanglin Sun ◽  
Liya Ma ◽  
Jiabing Ran ◽  
Xinyu Shen ◽  
Hua Tong
Keyword(s):  
High Performance ◽  
Synthesis Method ◽  
Carbon Aerogel ◽  
Drying Process ◽  
Asymmetric Supercapacitors ◽  
Nitrogen Doped ◽  
Coating Method ◽  
One Step ◽  
Nitrogen Doped Carbon

A novel high-performance electrode material, nitrogen-doped carbon aerogel/cobalt oxide (NCA/Co3O4) material, was prepared by a facile, one step and in situ coating method, followed by a freeze-drying process.

scholarly journals The influence of pore size distribution on the oxygen reduction reaction performance in nitrogen doped carbon microspheres

2016 ◽  
Vol 4 (7) ◽  
pp. 2581-2589 ◽  
Author(s):  
G. A. Ferrero ◽  
K. Preuss ◽  
A. B. Fuertes ◽  
M. Sevilla ◽  
M.-M. Titirici
Keyword(s):  
Oxygen Reduction Reaction ◽  
Pore Size Distribution ◽  
Oxygen Reduction ◽  
High Performance ◽  
Rational Design ◽  
Reduction Reaction ◽  
Carbon Microspheres ◽  
Nitrogen Doped ◽  
Reaction Performance ◽  
Nitrogen Doped Carbon

High-performance nitrogen-doped carbon electrocatalysts for the oxygen reduction reaction have been synthesized by the rational design of their pore structure.

Three-dimensional Co3O4@C@Ni3S2 sandwich-structured nanoneedle arrays: towards high-performance flexible all-solid-state asymmetric supercapacitors

2015 ◽  
Vol 3 (31) ◽  
pp. 16150-16161 ◽  
Author(s):  
Dezhi Kong ◽  
Chuanwei Cheng ◽  
Ye Wang ◽  
Jen It Wong ◽  
Yaping Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
High Performance ◽  
Three Dimensional ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors

A novel asymmetric supercapacitor composed of Co3O4@C@Ni3S2 NNAs as the positive electrode and activated carbon (AC) as the negative electrode can deliver a high energy density and excellent long cycle stability.

scholarly journals Cobalt-Containing Nanoporous Nitrogen-Doped Carbon Nanocuboids from Zeolite Imidazole Frameworks for Supercapacitors

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1110 ◽  
Author(s):  
Yu Song ◽  
Mingyue Zhang ◽  
Tianyu Liu ◽  
Tianjiao Li ◽  
Di Guo ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Metal Oxide Nanoparticles ◽  
Negative Electrode ◽  
Cobalt Metal ◽  
Energy Storage Devices ◽  
Nitrogen Doped ◽  
Metal Metal ◽  
The Rich ◽  
Nitrogen Doped Carbon

Pyrolyzing metal–organic frameworks (MOFs) typically yield composites consisting of metal/metal oxide nanoparticles finely dispersed on carbon matrices. The blend of pseudocapacitive metal oxides and conductive metals, as well as highly porous carbon networks, offer unique opportunities to obtain supercapacitor electrodes with mutually high capacitances and excellent rate capabilities. Herein, we demonstrate nitrogen-doped carbon nanocuboid arrays grown on carbon fibers and incorporating cobalt metal and cobalt metal oxides. This composite was synthesized via pyrolysis of a chemical bath deposited MOF, cobalt-containing zeolite imidazole framework (Co–ZIF). The active materials for charge storage are the cobalt oxide and nitrogen-doped carbon. Additionally, the Co metal and the nanoporous carbon network facilitated electron transport and the rich nanopores in each nanocuboid shortened ion diffusion distance. Benefited from these merits, our Co–ZIF-derived electrode delivered an areal capacitance of 1177 mF cm−2 and excellent cycling stability of ~94% capacitance retained after 20,000 continuous charge–discharge cycles. An asymmetric supercapacitor prototype having the Co–ZIF-derived hybrid material (positive electrode) and activated carbon (negative electrode) achieved a maximal volumetric energy density of 1.32 mWh cm−3 and the highest volumetric power density of 376 mW cm−3. This work highlights the promise of metal–metal oxide–carbon nanostructured composites as electrodes in electrochemical energy storage devices.

Rational design of three-dimensional nitrogen-doped carbon nanoleaf networks for high-performance oxygen reduction

2015 ◽  
Vol 3 (10) ◽  
pp. 5617-5627 ◽  
Author(s):  
Liang Chen ◽  
Chenyu Xu ◽  
Ran Du ◽  
Yueyuan Mao ◽  
Cheng Xue ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Rational Design ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Excellent Catalytic Performance

“Carbon nanoleaf” aerogels were developed, constructed with nitrogen-doped CNTs/GNRs, which show excellent catalytic performance in oxygen reduction reaction.

Sign in / Sign up

Export Citation Format

Share Document