Microwave-Assisted Synthesis of Nitrogen and Phosphorus Co-Doped Mesoporous Carbon and Their Potential Application in Alkaline Fuel Cells

Bairi, Venu Gopal; Bourdo, Shawn E.; Nasini, Udaya B.; Ramasahayam, Sunil Kumar; Watanabe, Fumiya; Berry, Brian C.; Viswanathan, Tito

doi:10.1166/sam.2013.1583

Cited by 24 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, the BET surface area of G-PANI was found to be about 35 m 2 /g. Electrochemical behavior of both PNDC and G-PANI was measured in electrochemical cell of three-electrode configuration G-PANI or PNDC coated glassy carbon electrode as working electrode, Pt as counter electrode and Ag/AgCl as reference electrode in 25,26,28 at 5 mV/s scan rate. In order to make progress toward the application of G-CPs in supercapacitor technologies, an attempt was made to improve the materials quality and their electrochemical properties by employing co-doped carbon structures.…”

Section: Resultsmentioning

confidence: 99%

“…The changes in chemical structures are based on hypothetical structures derived from the previous studied on G-PANI and PNDC. 25,28 The capacitive properties of PNDC/G-PANI supercapacitors in different electrolytes, such as 2 M H 2 SO 4 and 0.2 M LiClO 4 were studied. Figure 7 indicates the CV measured at different scan rate and the specific capacitance was calculated.…”

Section: Resultsmentioning

confidence: 99%

“…25,26,28,29 Synthesis of P-and N-co-doped carbon.-In this study, nitrogen and phosphorous co-doped carbon was prepared by microwave-assisted method reported recently by the authors of this manuscript. 25,30 The synthesis method was carried out in three steps; Step 1: 7.56 g of melamine was dissolved in 275 ml of hot distilled water followed by the addition of 17.28 g of unmodified tannin and stirred for several minutes.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

High Performance Asymmetric Supercapacitors Based on Dual Phosphorus (P) and Nitrogen (N) co-Doped Carbon and Graphene-Polyaniline Electrodes

Basnayaka

Kumar

Ram

et al. 2017

ECS J. Solid State Sci. Technol.

Self Cite

View full text Add to dashboard Cite

We report an asymmetric type hybrid supercapacitor device with ultrahigh-energy density by employing a dual phosphorus and nitrogen co-doped carbon (PNDC) and a graphene (G)-polyaniline (PANI) nanocomposite electroactive electrodes. Dual-doped carbon is synthesized by the microwave assisted technique and G-PANI was synthesized by the chemical oxidative polymerization technique. An asymmetric PNDC/G-PANI electrodes with ionic liquids (IL) as electrolytes in supercapacitor are found capable of increasing the operating voltage up to 4 V and electrodes with aqueous electrolytes in supercapacitor are capable of increasing the operating voltage up to 2 V. The size-uniform porous nanostructures of PNDC and G-PANI provide a continuous electron pathways and facilitate short ionic transportation process. Further, IL increases the wettability of the electrodes and exhibited ultra-high energy density of 114 Wh/kg and 13.7 kW/kg power density at a 2 A/g current density. Therefore, the asymmetric type hybrid supercapacitor based on G-PANI nanocomposite and microwave assisted PNDC electrodes is a cost effective ultra-high energy density supercapacitor with high rate capability. An energy storage device called "Supercapacitors" or electrochemical capacitors (ECs) attracted extensive attention because of their outstanding properties over other energy storage devices, such as, fuel cells, batteries, and dielectric capacitors. ECs can provide instantaneously higher power density than batteries and higher energy density than dielectric capacitors, and therefore under consideration for applications in transportation, hybrid vehicles, modern electronics, and grid-connected power plants. [1][2][3][4] Even though, high power uptake can be achieved by ECs, the energy densities are significantly lower than rechargeable battery systems, which limit their applications as a main power source.5 Advanced supercapacitors must be developed with higher operating voltage and higher energy density (>100 Wh/kg) without sacrificing power delivery and cycle life for future practical applications. 4 One method of improving energy density is to design asymmetric supercapacitors by combining electrodes of the double layer capacitance with redox capacitance, which can make use of the different voltage windows of two electrodes.6-9 For such type of supercapacitors, one electrode stores charge through a reversible nonfaradaic process of ionic movement on the surface of an activated carbon, carbon nanotubes (CNTs) or graphene, 10-12 and other electrode is to utilize a reversible faradaic reaction of electroactive material, such as metal oxides (MnO 2 and RuO 2 ) and conducting polymers (CPs); (a) polyaniline (PANI), (b) polypyrrole (PPy) and (b) poly(3 4-ethylenedioxythiophene) (PEDOT). 13,14 Maximizing the specific capacitance(C) and cell voltage (V) are the key purposes of fabricating excellent supercapacitors to improvise their energy densities by employing high-reactivity electrode materials and proper electrolytes. Several asymmetric type supercapacito...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

High Performance Asymmetric Supercapacitors Based on Dual Phosphorus (P) and Nitrogen (N) co-Doped Carbon and Graphene-Polyaniline Electrodes

Basnayaka

Kumar

Ram

et al. 2017

ECS J. Solid State Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Numerous examples of co-doped materials are found in the literature. Different combinations such as boron and nitrogen, nitrogen and phosphorous [166,167], nitrogen and sulfur [168], boron and phosphorous [169], silicon and phosphorous [170], have been investigated as co-doped carbon materials. However, many more combinations are possible.…”

Section: Co-doped Materialsmentioning

confidence: 99%

“…We also used different precursors to produce doped nitrogen and phosphorous carbon using microwave technology to achieve materials with high specific capacitance values (182 F/g) [173,174]. It has been observed that microwave technique usually produces high surface area materials [167]. A scanning electron micrograph of phosphorous and nitrogen co-doped carbon is presented in Figure 3 [175].…”

Section: Co-doped Materialsmentioning

confidence: 99%

Metal-Free Carbon-Based Supercapacitors—A Comprehensive Review

et al. 2020

Self Cite

View full text Add to dashboard Cite

Herein, metal-free heteroatom doped carbon-based materials are being reviewed for supercapacitor and energy applications. Most of these low-cost materials considered are also derived from renewable resources. Various forms of carbon that have been employed for supercapacitor applications are described in detail, and advantages as well as disadvantages of each form are presented. Different methodologies that are being used to develop these materials are also discussed. To increase the specific capacitance, carbon-based materials are often doped with different elements. The role of doping elements on the performance of supercapacitors has been critically reviewed. It has been demonstrated that a higher content of doping elements significantly improves the supercapacitor behavior of carbon compounds. In order to attain a high percentage of elemental doping, precursors with variable ratios as well as simple modifications in the syntheses scheme have been employed. Significance of carbon-based materials doped with one and more than one heteroatom have also been presented. In addition to doping elements, other factors which play a key role in enhancing the specific capacitance values such as surface area, morphology, pore size electrolyte, and presence of functional groups on the surface of carbon-based supercapacitor materials have also been summarized.

show abstract

Phosphorous, nitrogen co‐doped carbon from spent coffee grounds for fuel cell applications

Ramasahayam

Azam

Viswanathan

2015

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Spent coffee grounds, which represents the vast solid residual matter generated from consumed coffee beans, requires proper reutilization. This work represents the production of an alternate material from spent coffee grounds to replace expensive metal based catalysts currently used as electrodes in fuel cells. A novel microwave assisted technique which is easy, rapid, and economical is utilized for the synthesis of Phosphorous, Nitrogen co-doped carbon (PNDC) from spent coffee grounds and ammonium polyphosphate. SEM analysis revealed that PNDC is composed of distinct, spherical shaped particles. PNDC has a BET surface area of 507 m 2 g 21 and is predominantly mesoporous. XPS reveals that PNDC contains about 1.90% N and 3.02% P besides C and O.PNDC exhibits good O 2 reduction response in 0.1M KOH, which was found to be comparable to that of 20% Pt/C.

show abstract

Microwave-Assisted Synthesis of Nitrogen and Phosphorus Co-Doped Mesoporous Carbon and Their Potential Application in Alkaline Fuel Cells

Cited by 24 publications

References 0 publications

High Performance Asymmetric Supercapacitors Based on Dual Phosphorus (P) and Nitrogen (N) co-Doped Carbon and Graphene-Polyaniline Electrodes

High Performance Asymmetric Supercapacitors Based on Dual Phosphorus (P) and Nitrogen (N) co-Doped Carbon and Graphene-Polyaniline Electrodes

Metal-Free Carbon-Based Supercapacitors—A Comprehensive Review

Phosphorous, nitrogen co‐doped carbon from spent coffee grounds for fuel cell applications

Contact Info

Product

Resources

About