Molten salt synthesis of nitrogen doped porous carbon: a new preparation methodology for high-volumetric capacitance electrode materials

2016 ◽  
Vol 4 (25) ◽  
pp. 9832-9843 ◽  
Author(s):  
Tian Ouyang ◽  
Kui Cheng ◽  
Yinyi Gao ◽  
Shuying Kong ◽  
Ke Ye ◽  
...  
Keyword(s):  
Carbon Source ◽  
Molten Salt ◽  
Porous Carbon ◽  
Electrode Materials ◽  
Low Cost ◽  
Three Dimensional ◽  
Molten Salt Synthesis ◽  
Nitrogen Doped ◽  
One Step ◽  
Volumetric Capacitance

Here, a novel and one-step molten salt synthesis of three-dimensional, densely nitrogen-doped porous carbon (NPC) material by using low-cost and eco-friendly tofu as the nitrogen-containing carbon source is proposed.

N, S, O Self-Doped Porous Carbon Nanoarchitectonics Derived from Pinecone with Outstanding Supercapacitance Performances

2020 ◽  
Vol 20 (5) ◽  
pp. 2728-2735 ◽  
Author(s):  
Di Zhang ◽  
Yanchun Xue ◽  
Jiale Chen ◽  
Xingmei Guo ◽  
Dandan Yang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Electrode Materials ◽  
Low Cost ◽  
High Specific Capacitance ◽  
High Specific Surface Area ◽  
Koh Activation ◽  
Double Layer Capacitor ◽  
Symmetric Supercapacitor ◽  
Biomass N ◽  
One Step

Biomass-derived porous carbons are considered as one of the most promising electrode materials for supercapacitors due to their low-cost and natural abundance. In this work, pinecone is used to fabricate biomass N, S, O-doped porous carbon via one-step carbonization process with KOH activation. By optimizing the additive amount of KOH and calcination temperature, the asprepared product shows a high specific surface area and pore volume up to 1593.8 m2 g−1 and 0.8582 cm3 g−1, respectively. As an electric double-layer capacitor (EDLC) electrode, the N, S, O-doped porous carbon exhibits a high specific capacitance of 285 F g−1 at 0.5 A g−1 and good rate performance with a capacitance retention of 78.6% from 0.5 to 20 A g−1. Furthermore, the as-assembled symmetric supercapacitor with 6 mol L−1 KOH as electrolyte possesses a promising energy density of 6.34 Wh kg−1 and a power density of 250 W kg−1. Outstanding cycling stability was also demonstrated with 94.4% capacitance retention after 10,000 charge/discharge cycles at 1 A g−1.

Supercapacitance Property Study of 3D Open-Framework Prussian Blue in Neutral Electrolyte

2021 ◽  
Vol 13 (3) ◽  
pp. 436-446
Author(s):  
Wei Pan ◽  
Mu Zhang ◽  
Dongfeng Xue ◽  
Xudong Sun
Keyword(s):  
Electrochemical Properties ◽  
Prussian Blue ◽  
Electrode Materials ◽  
Low Cost ◽  
Three Dimensional ◽  
Particle Morphology ◽  
Precipitation Method ◽  
Dimensional Structure ◽  
Sem Image ◽  
One Step

Prussian blue is a kind compound with a consistent three-dimensional structure. Here we characterized a family of Prussian blue which could have reversible insertion of cations into materials. This study details comprehensive electrochemical property information about Prussian blue electrode materials and provides a method to evaluate a series of supercapacitor materials. These hexacyanoferrates were synthesized by one step precipitation method which was low cost. They exhibited extremely different apparent morphology in the scanning electron microscope (SEM) image. And then these Prussian blue electrode materials were evaluated on room temperature for their electrochemical properties. They show a different specific capacitance and redox voltage. The kinetic study reveals reasons that influence the electrochemical properties of these active materials. First, the particle morphology has a great effect on it; Second, transition metal cations modify the C≡N bond connected with it and then influence the bond connected with the Fe atom.

scholarly journals Novel Synthesis of Nitrogen-Containing Bio-Phenol Resin and Its Molten Salt Activation of Porous Carbon for Supercapacitor Electrode

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1986 ◽  
Author(s):  
Tao Ai ◽  
Zhe Wang ◽  
Haoran Zhang ◽  
Fenghua Hong ◽  
Xin Yan ◽  
...  
Keyword(s):  
Molten Salt ◽  
Specific Capacitance ◽  
Porous Carbon ◽  
High Performance ◽  
Low Cost ◽  
High Specific Surface Area ◽  
Molten Salt Method ◽  
Supercapacitor Electrode ◽  
Nitrogen Doped ◽  
Phenol Resin

Nitrogen hybridization is an attractive way to enhance the wettability and electric conductivity of porous carbon, which increases the capacitance of carbon-based supercapacitor, however, there is lack of low-cost methods to prepare the nitrogen-doped porous carbon materials. Herein, a novel facile nitrogen-containing bio-phenolic resin was synthesized by polymerization of the carbamate bio-oil, Phenol and paraformaldehyde. As a precursor of nitrogen-doped porous carbon, the nitrogen-containing bio-phenol resin was activated by the one-step molten-salt method. The resultant nitrogen-doped porous carbon showed a high specific surface area up to 1401 m2·g−1. As a supercapacitor electrode, the nitrogen-doped porous carbons showed specific capacitance of 159 F·g−1 at 0.5 A·g−1. It also exhibited high cyclic stability with 94.8% retention of the initial specific capacitance over 1000 charge-discharge cycles at 1.0 A·g−1. The results suggest that these nitrogen-containing bio-phenol resin provide a new source of nitrogen-doped porous carbon for high-performance supercapacitor electrodes.

In Situ One-Step Synthesis of Hierarchical Nitrogen-Doped Porous Carbon for High-Performance Supercapacitors

2014 ◽  
Vol 6 (10) ◽  
pp. 7214-7222 ◽  
Author(s):  
Ju-Won Jeon ◽  
Ronish Sharma ◽  
Praveen Meduri ◽  
Bruce W. Arey ◽  
Herbert T. Schaef ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Nitrogen Doped ◽  
One Step

Preparing high surface area porous carbon from biomass by carbonization in a molten salt medium

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75728-75734 ◽  
Author(s):  
Huishan Shang ◽  
Yanjie Lu ◽  
Feng Zhao ◽  
Cong Chao ◽  
Bing Zhang ◽  
...  
Keyword(s):  
Molten Salt ◽  
Surface Area ◽  
Porous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Molten Salt Synthesis ◽  
Synthesis Process ◽  
Salt Medium ◽  
Peanut Shells

Peanut shells were transformed into porous carbon with a high surface area through a simple ZnCl2-molten salt synthesis process.

Fabrication of nitrogen-doped hierarchical porous carbons from Sargassum as advanced electrode materials for supercapacitors

2021 ◽  
Author(s):  
Feiqiang Guo ◽  
Yinbo Zhan ◽  
Xiaopeng Jia ◽  
Huiming Zhou ◽  
Shuang Liang ◽  
...  
Keyword(s):  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Koh Activation ◽  
Porous Carbons ◽  
Nitrogen Doped ◽  
Novel Approach ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

Using Sargassum as the precursor, a novel approach was developed to synthesize three-dimensional porous carbons as high-performance electrode materials for supercapacitors via KOH activation and subsequent nitrogen-doping employing melamine as...

Sign in / Sign up

Export Citation Format

Share Document