3D printed graphene/nickel electrodes for high areal capacitance electrochemical storage

In this work, poly(aniline-co-N-methylaniline) (co-PNMA) and poly(aniline-co-N-ethylaniline) (co-PNEA) have been electrochemically synthesised on pencil graphite electrode (PGE) surface to use as an electrode material for supercapacitors. The films have been formed from aqueous solution of monomers and sulfuric acid as electrolyte. The copolymer films have been characterised by cyclic voltammetry (CV), Mott-Schottky (MS) analysis, and scanning electron microscopy (SEM). The electrochemical storage properties of uncoated electrode and copolymer coated electrodes (PGE/co-PNMA and PGE/co-PNEA) have been investigated via CV, electrochemical impedance spectroscopy (EIS), and repeating chronopotentiometry (RCP) methods in 0.100 M H2SO4 solution. Experimental results indicate that PGE/co-PNMA exhibits higher specific capacitance than PGE/co-PNEA. Highest specific capacitance values of the PGE/co-PNMA and PGE/co-PNEA have been obtained as 213.85 mF g–1 (17.7 mF cm–2) and 48.60 mF g–1 (4.36 mF cm–2) at 50 mV s–1, respectively when compared with that of uncoated PGE which is 1.63 mF g–1 (0.14 mF cm–2). Charge-discharge characteristics of the electrodes have shown that both of the electrodes can be used as supercapacitor electrode active materials for low voltage (<10 V) applications.

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One-pot synthesis of g-C3N4/MnO2 and g-C3N4/SnO2 hybrid nanocomposites for supercapacitor applications

Sustainable Energy & Fuels ◽

10.1039/c8se00279g ◽

2018 ◽

Vol 2 (10) ◽

pp. 2244-2251 ◽

Cited By ~ 29

Author(s):

Jithesh Kavil ◽

P. M. Anjana ◽

Pradeepan Periyat ◽

R. B. Rakhi

Keyword(s):

Energy Storage ◽

Specific Capacitance ◽

Composite Electrode ◽

Hybrid Nanocomposites ◽

Electrochemical Energy Storage ◽

One Pot ◽

Storage Performance ◽

One Pot Synthesis ◽

Supercapacitor Applications ◽

Electrochemical Energy

Incorporation of MnO2 nanostructures as spacers enhances the electrochemical energy storage performance of g-C3N4. The g-C3N4/MnO2 composite electrode exhibited a specific capacitance of 174 F g−1.

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Remarkable capacitive behavior of a Co3O4–polyindole composite as electrode material for supercapacitor applications

Journal of Materials Chemistry A ◽

10.1039/c5ta07046e ◽

2015 ◽

Vol 3 (48) ◽

pp. 24338-24348 ◽

Cited By ~ 60

Author(s):

R. Pavul Raj ◽

P. Ragupathy ◽

S. Mohan

Keyword(s):

Synergistic Effect ◽

Specific Capacitance ◽

Electrode Material ◽

Composite Electrode ◽

High Specific Capacitance ◽

Single Step ◽

Rate Performance ◽

Capacitive Behavior ◽

Supercapacitor Applications

A single step synthesized Co3O4–polyindole composite electrode exhibits high specific capacitance, rate performance and cyclability. This enhanced electrochemical supercapacitive behavior is mainly attributed to the synergistic effect between Co3O4 and polyindole.

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Graphene decorated with MoS2 nanosheets: a synergetic energy storage composite electrode for supercapacitor applications

Dalton Transactions ◽

10.1039/c5dt04832j ◽

2016 ◽

Vol 45 (6) ◽

pp. 2637-2646 ◽

Cited By ~ 115

Author(s):

R. Thangappan ◽

S. Kalaiselvam ◽

A. Elayaperumal ◽

R. Jayavel ◽

M. Arivanandhan ◽

...

Keyword(s):

Energy Storage ◽

Synergistic Effect ◽

Specific Capacitance ◽

Composite Electrode ◽

Mos2 Nanosheets ◽

Supercapacitor Applications

The synergistic effect of MoS2 and graphene with a specific capacitance of 270 F g−1 for the use of a higher performance energy storage composite electrode for supercapacitors is reported.

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Facile one-step synthesis of a composite CuO/Co3O4 electrode material on Ni foam for flexible supercapacitor applications

New Journal of Chemistry ◽

10.1039/c7nj01109a ◽

2017 ◽

Vol 41 (13) ◽

pp. 5493-5497 ◽

Cited By ~ 31

Author(s):

Hee-Je Kim ◽

Sang Yong Kim ◽

Lun Jae Lim ◽

Araveeti Eswar Reddy ◽

Chandu V. V. Muralee Gopi

Keyword(s):

Hydrothermal Synthesis ◽

Specific Capacitance ◽

Electrode Material ◽

Composite Electrode ◽

Cyclic Stability ◽

Ni Foam ◽

Flexible Supercapacitor ◽

One Step ◽

Supercapacitor Applications

CuO/Co3O4 nanospheres were grown on Ni foam via a simple, one-step hydrothermal synthesis. The resultant CuO/Co3O4 composite electrode exhibits superior specific capacitance and cyclic stability compared to the Co3O4 electrode.

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Facile synthesis of a NiO/NiS hybrid and its use as an efficient electrode material for supercapacitor applications

New Journal of Chemistry ◽

10.1039/c7nj05145j ◽

2018 ◽

Vol 42 (7) ◽

pp. 5309-5313 ◽

Cited By ~ 23

Author(s):

Sang-Yong Kim ◽

Chandu V. V. Muralee Gopi ◽

Araveeti Eswar Reddy ◽

Hee-Je Kim

Keyword(s):

Hydrothermal Synthesis ◽

Specific Capacitance ◽

Electrode Material ◽

Composite Electrode ◽

Cost Effective ◽

Cyclic Stability ◽

Ni Foam ◽

Facile Synthesis ◽

Supercapacitor Applications

Cost-effective NiO/NiS nanosheets decorated with nanoparticles were successfully fabricated on Ni foam by carrying out a simple two-step hydrothermal synthesis. The resultant NiO/NiS composite electrode exhibited better specific capacitance and cyclic stability than did a NiO electrode.

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Binder free 2D aligned efficient MnO2 micro flowers as stable electrodes for symmetric supercapacitor applications

RSC Advances ◽

10.1039/c7ra05655a ◽

2017 ◽

Vol 7 (59) ◽

pp. 36886-36894 ◽

Cited By ~ 9

Author(s):

Anil A. Kashale ◽

Madagonda M. Vadiyar ◽

Sanjay S. Kolekar ◽

Bhaskar R. Sathe ◽

Jia-Yaw Chang ◽

...

Keyword(s):

Thin Film ◽

Stainless Steel ◽

Specific Capacitance ◽

Stainless Steel Mesh ◽

Steel Mesh ◽

Symmetric Supercapacitor ◽

Binder Free ◽

Thin Film Electrodes ◽

Supercapacitor Applications

δ-MnO2 thin film electrodes (M1) deposited on stainless steel mesh using CBD were used in symmetric supercapacitor device (SSM/M1//M1/SSM) with aqueous 1 M Na2SO4 electrolyte. The device shows 138% retention of specific capacitance after 2500 cycles.

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