Effect of calcination temperature on the microstructure of vanadium nitride/nitrogen-doped graphene nanocomposites as anode materials in electrochemical capacitors

Abstract

VN/N-doped graphene nanocomposites have been fabricated by an in situ pyrolysis method at different temperatures for supercapacitors.

Vanadium nitride nanoparticle decorated N-doped carbon nanotube/N-doped carbon nanosheet hybrids via a C3N4 self-sacrificing method for electrochemical capacitors

“…The peak at 514.0 eV and 520.1 eV can be attributed to VN. 25 The N 1s spectra show four separated peaks related with graphitic-N (401.2 eV), pyrrolic-N (399.9 eV), pyridinic-N (398.7 eV), and V–N bonds (397.1 eV). 35,36 The V–N bond in V 2p and N 1s spectra further demonstrates the successful formation of VN by the template sacrificing method.…”

“…[17][18][19] Recently, C 3 N 4 was chosen as N-doped source for preparation of N-doped carbon materials. 20,21 In addition, C 3 N 4 can also be used for the synthesis of nitrides, such as VN, TiN, MoN et al [22][23][24][25] During these processes, C 3 N 4 decomposes under high temperature and is easy to eliminate. Based on this, C 3 N 4 can behave as a self-sacricing template for preparing the hybrids of nitrides and N-doped carbon materials.…”

Li-storage of Li2ZnTi3O8@C-N anodes with high-performance in a wide temperature range

“…It can be seen that the decomposition of glucose occurs from 210 to 600°C with two weight losses on the TG curve and two peaks on the DTG curve, producing a lot of water. With the increase of the temperature, there are four weight losses on the TG curve and four peaks on the DTG, corresponding to DCDA gradually condensing to melamine, tris-s-triazine, and C 3 N 4 [34]. Above 700°C, C 3 N 4 completely decomposes.…”

Aerosol-Assisted Assembly of Mesoporous Carbon Spheres With Fast and Stable K-ion Storage

“…Currently, various electrode materials such as carbon materials (Hu et al, 2020 ; Liu M. et al, 2020 ; Zhang et al, 2020 ), alloys (Zhang et al, 2017 ; Lei et al, 2018 ; Zheng et al, 2019 ), metal oxide/sulfides (Li et al, 2020a ; Liu Y. et al, 2020 ; Zhou et al, 2020 ), titanium based insertion materials (Sultana et al, 2016 ; Dong et al, 2018 ), and MXene (Okubo et al, 2018 ; Tang et al, 2020 ; Zhao et al, 2020 ) have been extensively studied as promising anodes for K-ion storage. Benefiting from the abundant resources, low cost, allotrope, and excellent physical/chemical stability, carbon materials have been widely reported and used for KIBs (Jian et al, 2015 ; Liu et al, 2019b ; Zhang R. et al, 2019 ; Huang et al, 2020 ; Li et al, 2020b ). The application of carbon based material for potassium ion storage requires high conductivity and large interlayer space for large K + insertion.…”