Manganese dioxide/cobalt tungstate/ nitrogen-doped carbon nano-onions nanocomposite as new supercapacitor electrode

Supramolecular Functionalisation of B/N Co-Doped Carbon Nano-Onions for Novel Nanocarrier Systems

“…The addition of dopant atoms such as nitrogen [ 8 ] and boron [ 9 ] to the CNO structure adds an additional layer of customisation, enabling the optimisation of CNO structure and composition for particular applications. In particular, the doping of CNOs with heteroatoms can impart luminescence [ 10 ], sensing [ 11 ], and energy storage [ 12 ] properties.…”

Unique CoWO4@WO3heterostructured nanosheets with superior electrochemical performances for all-solid-state supercapacitors

“…[20][21][22][23] However, the electrochemical performance of these bimetallic oxides is still unsatisfactory on account of high electron migration resistance and poor redox kinetics during charging/discharging processes. 24,25 In situ growth of nanomaterials on conductive substrates (e.g. graphene, carbon paper and carbon cloth) has been regarded as a promising strategy to improve the utilization of active material and enhance the electrons/ions conductivity.…”

“…30 Najafi et al reported a unique triple-segment nanocomposite of manganese dioxide, cobalt tungstate, and nitrogen-doped carbon nano-onions (MnO 2 /CoWO 4 /NCNO) by a facile chemical method, which exhibited a specific capacitance of 536 F g −1 at a current density of 2 A g −1 and kept 96% capacity retention over 3000 cycles. 31 With this in mind, we designed hierarchical heterostructured CoWO 4 @WO 3 -1 nanosheet arrays on flexible carbon cloth (CC) substrate by a two-step in situ construction process and following thermal treatment. In the well-designed heterostructure, CoWO 4 nanosheets provide abundant redox active sites and rich hierarchical diffusion channels for electrons and ions and WO 3 nanosheets contribute to provide a conductive network to accelerate the transfer of electrons and ions.…”

“…30 Najafi et al reported a unique triple-segment nanocomposite of manganese dioxide, cobalt tungstate, and nitrogen-doped carbon nano-onions (MnO 2 /CoWO 4 /NCNO) by a facile chemical method, which exhibited a specific capacitance of 536 F g −1 at a current density of 2 A g −1 and kept 96% capacity retention over 3000 cycles. 31…”

Electrochemical codeine sensor based on carbon paste electrode/HKUST-1

“…The use of electrochemistry for measurement of different medicine in various solution and furthermore other functional technologies has much attention has been paid to them. [19][20][21][22][23][24][25][26][27]. Among the different analytical methods, the electrochemical methods compared to other methods, are powerful detection method due to the intrinsic properties such as sensitivity, low-cost, portability and ease of use [16,[28][29][30][31][32][33][34].…”