Investigations on electrochemical performances of Co(OH)2, Fe2O3 and Mn3O4 nanoparticles covered carbon micro spheres for supercapacitor application

Sambathkumar, C.; Kumar, M. Krishna; Nallamuthu, N.; Rajesh, K.; Devendran, P.

doi:10.1016/j.inoche.2021.109057

Cited by 21 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[12] CMs have rapidly become research hot spot in energy storage devices due to their tunable pore structure and good conductivity. [13] Various CMs, such as porous carbon nanosheets, [14] carbon nanospheres, [15] carbon fibers, [16] carbon nanotubes [17,18] and graphene [19] have been widely developed as electrode materials for SCs. Although CMs have tunable pore structure parameters and good conductivity, the performance of electrode materials is still unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of N/P/S Co‐Doped 3D Cross‐Linked Carbon Nanosheets by Double Activation Method for High‐Performance Supercapacitors

et al. 2022

View full text Add to dashboard Cite

It is still a challenge to prepare heteroatoms‐doped carbon materials for supercapacitors by an acid‐free and alkali‐free synthesis method. Herein, the N/P/S co‐doped carbon nanosheets (NPS‐CNs) were synthesized by an in‐situ K2CO3 and Na2S2O3 ⋅ 5H2O double activation method from pyrene as carbon source, melamine‐phytic acid supramolecular aggregate as N and P source without the presence of acid and alkali. The as‐prepared NPS‐CN featured three‐dimensional cross‐linked nanosheets with abundant pores, boosting the stability of carbon skeleton and promoting the transfer of ion and electron. The abundant micropores together with high heteroatom content (15.09 %) provided abundant active sites and defects for ion adsorption. Benefitting from these merits, the NPS‐CN electrode exhibits a high specific capacitance of 485.1 F g−1 at 0.05 A g−1 as well as good rate performance of 350.3 F g−1 at 20 A g−1 in three electrode system. Simultaneously, the specific capacitance of the NPS‐CN capacitor reached 305.0 F g−1 at 0.05 A g−1 and retained 201.2 F g−1 at 100 A g−1 in two electrode system. Importantly, NPS‐CN capacitor presented an excellent cycle stability (93.4 % of initial capacitance after 30,000 charge/discharge cycles). This work opened a less harmful route to prepare NPS‐CNs from small polycyclic aromatic hydrocarbons for energy storage devices.

show abstract