An enhanced performance of hybrid supercapacitor based on polyaniline-manganese phosphate binary composite

Lee, Chee Ching; Omar, Fatin Saiha; Numan, Arshid; Duraisamy, Navaneethan; Ramesh, K.

doi:10.1007/s10008-017-3624-1

Cited by 89 publications

(24 citation statements)

References 24 publications

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“…Even at higher current density, the device still retains 10.9 Wh kg −1 of specific energy with a maximum specific power of 6.5 kW kg −1 . Ragone plot correlating the energy and power densities of the present device with previously reported phosphates devices is shown in Figure 10E, Clearly, the obtained energy density of 25.4 Wh kg −1 for as‐fabricated CuCNT device is considerably superior to earlier reported values for most of the phosphates based symmetric and asymmetric systems (see Table 1), including Mn 3 (PO 4 ) 2 //Mn 3 (PO 4 ) 2 (11.7 Wh kg −1 ), 14 Mn 3 (PO 4 ) 2 /PANI//AC (14.7 Wh kg −1 ), 15 Mn 3 (PO 4 ) 2 /GF//AC (7.6 Wh kg −1 ), 16 Cu 2 P 2 O 7 //Cu 2 P 2 O 7 (11.54 Wh kg −1 ), 42 Ni/NiHPO 4 //AC (26.8 Wh kg −1 ), 71 C‐Fe 2 P 4 O 12 //C‐Fe 2 P 4 O 12 (6.2 Wh kg −1 ), 72 MnPO 4 ∙H 2 O/GO//MnPO 4 ∙H 2 O/GO (5.78 Wh kg −1 ), 73 Na‐doped Ni 2 P 2 O 7 //Graphene (23.4 Wh kg −1 ), 74 TiP 2 O 7 //AC (13 Wh kg −1 ), 75 Mn 3 (PO 4 ) 2 //AC (16.64 Wh kg −1 ), 76 Mn 3 (PO 4 ) 2 //Mn 3 (PO 4 ) 2 (19.09 Wh kg −1 ), 76 Co 3 (PO 4 ) 2 ∙4H 2 O/GF//C‐Fe/PANI (24 Wh kg −1 ), 77 VOPO 4 ∙2H 2 O//VOPO 4 ∙2H 2 O (18.7 Wh kg −1 ) 78 . This fine supremacy of the device to store favorable amount of energy density even at high power operation can be attributed to the complementary constituents of composite electrode in addition to antique microstructural nanoflakes phosphate assembly.…”

Section: Resultscontrasting

confidence: 75%

“…With alluring physico‐chemical merits, several interesting phosphates or pyrophosphates of transition metals such as Mn, 14‐16 Fe, 17 Co, 18‐20 Ni, 21‐23 Cu 24,25 with different nanostructures and designs have been appreciably explored as promising electrode materials for supercapacitor applications over the past few years. In particular, Khan et al designed Co 2 P 2 O 7 nanosheets and achieved an enhanced specific capacitance of 580 F g −1 in a redox‐active electrolyte 26 .…”

Section: Introductionmentioning

confidence: 99%

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Multi‐walled carbon nanotubes supported copper phosphate microflowers for flexible solid‐state supercapacitor

Agarwal

Majumder

Sankapal

2021

Intl J of Energy Research

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Summary Factual realization of 2‐fold material mutualistic approach has been demonstrated as a state‐of‐art for the growth of copper phosphate (Cu2P2O7) microflowers on multi‐walled carbon nanotubes (MWCNT) through simple, low cost, and industry‐scalable chemical route, namely, successive ionic layer adsorption and reaction. Rationally designed unique surface architecture synergistically comprehends the merits of highly conductive electric double‐layer capacitance‐based MWCNT skeleton and pseudocapacitance enriched Cu2P2O7 enabling Cu2P2O7/MWCNT (CuCNT) composite. As‐synthesized CuCNT electrode exhibits reciprocity toward exceptionally enhanced electrochemically active surface area of 398.6 m2 g−1, high specific capacitance of 465 F g−1 at 13 A g−1, and extraordinary cyclic stability. Comparative accounting of charge storage in terms of surface‐capacitive and diffusion‐controlled mechanisms has been explored in depth to gain insight into internal electrochemical kinetics. Furthermore, symmetrically configured bendable solid‐state supercapacitor device using CuCNT delivers proficient specific energy of 25.4 Wh kg−1 together with high mechanical stability of 96% at 170° of bending. Also, the experimentally and theoretically evaluated series and parallel combination of two devices serve as a showcase toward potential candidature for applications of specific requirements. Furthermore, live demonstration through lightening of 21 red light‐emitting diodes authorizes the probable commercialization of the present CuCNT device.

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Section: Resultscontrasting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Multi‐walled carbon nanotubes supported copper phosphate microflowers for flexible solid‐state supercapacitor

Agarwal

Majumder

Sankapal

2021

Intl J of Energy Research

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“…From Figure 6f, the CC@PANI NTs-H FSSC exhibits a high energy density from 21.9 Wh kg −1 (at the power density of 5.0 × 10 3 W kg −1 ) to 9 Wh kg −1 (at the power density of 1.2 × 10 4 W kg −1 ). The values are comparable with other congeneric FSSCs devices [31][32][33][34][35], as can be seen in Table 2. H FSSC exhibits a high energy density from 21.9 Wh kg −1 (at the power density of 5.0 × 10 3 W kg −1 ) to 9 Wh kg −1 (at the power density of 1.2 × 10 4 W kg −1 ).…”

Section: Electrochemical Performances Of Assembled Fsscs Device From supporting

confidence: 87%

Polyaniline Nanotubes/Carbon Cloth Composite Electrode by Thermal Acid Doping for High-Performance Supercapacitors

et al. 2019

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Carbon materials have been widely used in designing supercapacitors (SCs) but the capacitance is not ideal. Herein, we synthesize polyaniline (PANI) nanotubes on the basis of a carbon cloth (CC) through a one-step self-degradation template method, and fabricate a CC@PANI NTs-H (CC@PANI nanotubes doping at high temperature) composite electrode by thermal acid doping. The CC@PANI NTs-H electrode obviously exhibits better electrochemical performance with a gravimetric capacitance of 438 F g −1 and maintains 86.8% after 10,000 cycles than the CC@PANI NTs-R (CC@PANI nanotubes doping at room temperature) electrode. Furthermore, we assemble a flexible solid state supercapacitor (FSSC) device with the as-prepared CC@PANI NTs-H composite electrodes, showing good flexibility and outstanding electrochemical performances with a high gravimetric capacitance of 247 F g −1 , a large energy density of 21.9 Wh kg −1 , and a capacitance retention of 85.4% after 10,000 charge and discharge cycles. Our work proposes a novel and easy pathway to fabricate low-cost FSSCs for the development of energy storage devices.

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“…These values are much higher compared to other metal phosphate-based devices as shown in Figure 7H, and in Table 1. 11,17,[44][45][46][47] Therefore, CoMn(PO 4 ) 2 can strongly be considered as promising pseudocapacitive material other than well-known materials such as MnO 2 and RuO 2 for ECs. Figure 7I represents a plot of the phase angle vs frequency of CoMn(PO 4 ) 2 /GF//AC hybrid device, showing a phase angle À82.6 .…”

Section: Resultsmentioning

confidence: 99%

A study of Co‐Mn phosphate supported with graphene foam as promising electrode materials for future electrochemical capacitors

Mirghni

Oyedotun

Mahmoud

et al. 2021

Intl J of Energy Research

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Mn and Co are known for their redox storage mechanism depending on the kinetics of their ions, which is required to boost capacity values of the material electrodes for energy storage applications. However, to the best of our knowledge, Co-Mn phosphate material-based electrochemical capacitors have been rarely investigated. In this work, CoMn(PO 4 ) 2 synergized with graphene foam (GF) was synthesized following an easy, direct and low-temperature hydrothermal method. The study investigated the synergy between Co, Mn and GFsupported composite, with a strong P-O covalent tie occurring at the surface of the material, leading to a high degree of polarization and very low relaxation time. The CoMn(PO 4 ) 2 /GF material tested as a half-cell could achieve a specific capacity of 58.15 mAh g À1 at 0.5 A g À1 . A CoMn(PO 4 ) 2 /GF//activated carbon (AC) hybrid device was made up considering CoMn(PO 4 ) 2 /GF and an AC material as positive and negative electrodes, respectively. The CoMn(PO 4 ) 2 /GF//AC hybrid device achieved a specific capacity of 45.89 mAh g À1 , specific energy of 51.53 Wh kg À1 and a corresponding specific power of 561.52 W kg À1 at 0.5 A g À1 . Furthermore, the device displayed a 95% capacity retention after 10 000 GCD cycles at 12 A g À1 and showed improved performance over its initial specific capacity after a voltage holding test for over 110 hours at 2 A g À1 .

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An enhanced performance of hybrid supercapacitor based on polyaniline-manganese phosphate binary composite

Cited by 89 publications

References 24 publications

Multi‐walled carbon nanotubes supported copper phosphate microflowers for flexible solid‐state supercapacitor

Multi‐walled carbon nanotubes supported copper phosphate microflowers for flexible solid‐state supercapacitor

Polyaniline Nanotubes/Carbon Cloth Composite Electrode by Thermal Acid Doping for High-Performance Supercapacitors

A study of Co‐Mn phosphate supported with graphene foam as promising electrode materials for future electrochemical capacitors

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