Nitrogen-doped porous carbon as functional sulfur host for enhancing the electrochemical performance

Ionics ◽  
2022 ◽  
Author(s):  
Yixiao Li
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Nitrogen Doped ◽  
Sulfur Host

scholarly journals Nickel sulfide nanocrystals on nitrogen-doped porous carbon nanotubes with high-efficiency electrocatalysis for room-temperature sodium-sulfur batteries

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Zichao Yan ◽  
Jin Xiao ◽  
Weihong Lai ◽  
Li Wang ◽  
Florian Gebert ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Porous Carbon ◽  
Density Functional ◽  
Room Temperature ◽  
Lewis Base ◽  
Nitrogen Doped ◽  
High Electronic Conductivity ◽  
Sulfur Host ◽  
Sodium Sulfur ◽  
Sulfur Cathodes

Abstract Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS2 component are clearly evidenced by operando synchrotron X-ray diffraction and density functional theory with strong adsorption of polysulfides and high conversion of soluble polysulfides into insoluble Na2S2/Na2S. Thus, the as-obtained sulfur cathodes exhibit excellent performance in room-temperature Na/S batteries.

scholarly journals Self-template/activation nitrogen-doped porous carbon materials derived from lignosulfonate-based ionic liquids for high performance supercapacitors

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36504-36513
Author(s):  
Qinqin Xu ◽  
Xia Wang ◽  
Jian Cheng ◽  
Lin Zhang ◽  
Feng He ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ion Exchange ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Supercapacitor Electrode ◽  
Nitrogen Doped ◽  
Ion Exchange Reaction ◽  
Excellent Electrochemical Performance

Without any additional template or activation agent, a high N-doped porous carbon was easily prepared by a simple ion exchange reaction and a following carbonization, and showed excellent electrochemical performance as a supercapacitor electrode.

Electrochemical performance of polyacrylamide hydrogel based nitrogen-doped porous carbon for supercapacitor

2020 ◽  
Vol 865 ◽  
pp. 114141 ◽  
Author(s):  
Shouqiang Wu ◽  
Denghu Wei ◽  
Hui Cui ◽  
Huaisheng Wang ◽  
Yuchao Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Polyacrylamide Hydrogel ◽  
Nitrogen Doped

Flexible solid-state supercapacitors based on freestanding nitrogen-doped porous carbon nanofibers derived from electrospun polyacrylonitrile@polyaniline nanofibers

2016 ◽  
Vol 4 (11) ◽  
pp. 4180-4187 ◽  
Author(s):  
Fujun Miao ◽  
Changlu Shao ◽  
Xinghua Li ◽  
Kexin Wang ◽  
Yichun Liu
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Polyaniline Nanofibers ◽  
Nitrogen Doped

Freestanding nitrogen-doped porous carbon nanofibers were successfully fabricated and assembled in symmetric flexible solid-state supercapacitors with outstanding electrochemical performance.

Horse Manure Derived Nitrogen-Doped Porous Carbon via Hydrothermal Carbonization for Promising Applications

2020 ◽  
Vol 990 ◽  
pp. 155-160
Author(s):  
Tanatorn Liamprawat ◽  
Panupong Verasarut ◽  
Napat Kaewtrakulchai ◽  
Gasidit Panomsuwan ◽  
Masayoshi Fuji ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Physicochemical Properties ◽  
Elemental Composition ◽  
Porous Carbon ◽  
Organic Waste ◽  
Hydrothermal Carbonization ◽  
Functional Material ◽  
Nitrogen Doped ◽  
Horse Manure ◽  
Activating Agent

Horse manure, organic waste from livestock, has been used for the production of nitrogen-doped porous carbons (NPC) which could be applied as functional material. The variety of different NH4OH solution concentrations (0.5, 1, 1.5, 2 M) were introduced in hydrothermal treatment as activating agent. Also, the nitrogen precursor was served. Horse manure derived NPC were characterized through varied physicochemical properties including NPC yields, FTIR, SEM, XPS and N2 sorption analyzer to characterize specific properties such as elemental composition on surface, surface functional bonding, physical morphology, and porosity of NPC. In addition, the incorporation of nitrogen dopant into the carbon was intended to further enhance the electrochemical performance.

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