Galvanostatically Deposited Polypyrrole Thin Films for Supercapacitor Application: Effect of Surfactant

Pandit, Vishal K.; Soudagar, Nafeesa M.; Lokhande, C.D.; Joshi, Sneha S.

doi:10.1016/j.matpr.2020.02.023

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…It verifies the successful preparation of PPy through both pulsed/conventional potentiostatic polymerization method. In addition, Raman spectroscopy of PP‐PPy/FEG exhibits two characteristic peaks at 1345 and 1575 cm −1 , attributed to the π‐conjugated planar structure and ring stretching of the pyrrole backbone respectively (Figure ) 46 . The tiny peak at 1089 cm −1 is of C–H in‐plane deformation, and peak at 973 cm −1 can be assigned to the quinoid polaronic and bipolaronic structure 47 .…”

Section: Resultsmentioning

confidence: 97%

“…In addition, Raman spectroscopy of PP-PPy/FEG exhibits two characteristic peaks at 1345 and 1575 cm −1 , attributed to the π-conjugated planar structure and ring stretching of the pyrrole backbone respectively (Figure S5). 46 The tiny peak at 1089 cm −1 is of C-H inplane deformation, and peak at 973 cm −1 can be assigned to the quinoid polaronic and bipolaronic structure. 47 Figure 1G shows the N 1 s X-ray photoelectron spectroscopy (XPS) spectra of PP-PPy/FEG and CP-PPy/FEG.…”

Section: Preparation and Structural Characterizationmentioning

confidence: 99%

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Pulse‐potential electrochemistry to boost real‐life application of pseudocapacitive dual‐doped polypyrrole

Sun

Huang

et al. 2022

SmartMat

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Polypyrrole (PPy) is a very promising pseudocapacitive electrode material for supercapacitors. However, the poor electrochemical performances and cycling stability caused by volumetric change and counterion drain severely limited its practical application and commercialization. Herein, we present a pulsepotential polymerization strategy for uniformly depositing a dual-doped PPy with ordered and shorter molecular structure by balancing the concentration polarization. Such a strategy ensures more homogeneous stress distribution of PPy during ultralong cycling tests and improves the cycle stability. Moreover, the pulse-potential polymerized PPy with dual anion doping behavior induces enhanced protonation level and improved electrical conductivity, which boosting the charge transfer kinetics. Therefore, the as-synthesized PPy exhibits a remarkable capacitance performance (7250 mF/cm 2 @ 3 mA/cm 2 ), outstanding rate capability (3073 mF/cm 2 @ 200 mA/cm 2 ) and a long cycle life. The assembled symmetric and asymmetric supercapacitors (ASC) exhibit good energy densities (0.8 mWh/cm 2 for ASC and 0.5 mWh/cm 2 for symmetric supercapacitor), and excellent durability with zero capacitive loss after 35,000 cycles. In addition, we have fabricated small pouch devices, which can effectively operate a variety of electronic products (including the high-voltage 5 V smartphone, and tablet) and well withstand the external extreme tests during operation, demonstrating the quantitative investigation of the real-life application of aqueous supercapacitors.

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Section: Resultsmentioning

confidence: 97%

Section: Preparation and Structural Characterizationmentioning

confidence: 99%

Pulse‐potential electrochemistry to boost real‐life application of pseudocapacitive dual‐doped polypyrrole

Sun

Huang

et al. 2022

SmartMat

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“…C–C ring stretching was observed for polarons at 1330–1344 cm −1 and for bipolarons at 1377–1382 cm −1 . The polarons associated with the C=C stretching peak were observed within the range of 1562–1593 cm −1, and the presence of the bipolaron structure was observed within the range of 1600–1618 cm −1 [ 37 , 40 , 41 , 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

Exploring the Influence of Morphology on Bipolaron–Polaron Ratios and Conductivity in Polypyrrole in the Presence of Surfactants

Samwang,

Watanabe,

Okamoto

et al. 2024

Molecules

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This research aims to deepen the understanding of the relationship between conductivity and morphology in polypyrrole (PPy) via a comparison of the bipolaron to polaron ratios with a focus on the C-H deformation area. PPy samples were synthesized with different surfactants: sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and tween 80 (TW). This study revealed that SDS significantly altered the bipolaron and polaron in the C-H deformation region and showed higher conductivity than other surfactants. Notably, the morphological shifts to a sheet-like structure when using ammonium sulfate (APS) contrasted with the particle-like form observed with ferric chloride (FeCl3). These results showed that if the oxidant changed, the bipolaron and polaron ratios in C-H deformation were unrelated to PPy morphology. However, this work showed a consistent relationship between SDS use, the bipolaron and polaron ratios in the C-H deformation, and the conductivity properties. Moreover, the natural positive charge of PPy and negatively charged SDS molecules may lead to an electrostatic interaction between PPy and SDS. This work assumes that this interaction might cause the transformation of polaron to bipolaron in the C–H deformation region, resulting in improved conductivity of PPy. This work offers more support for the future investigation of PPy characteristics.

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Superior multifunctional polypyrrole anticorrosion coating modified by polydopamine decorated barium titanate nanoparticles on NiTi shape memory alloys

Marashi-Najafi,

Khalil-Allafi,

Mahdavi

2023

Journal of Materials Research and Technology

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Galvanostatically Deposited Polypyrrole Thin Films for Supercapacitor Application: Effect of Surfactant

Cited by 7 publications

References 25 publications

Pulse‐potential electrochemistry to boost real‐life application of pseudocapacitive dual‐doped polypyrrole

Pulse‐potential electrochemistry to boost real‐life application of pseudocapacitive dual‐doped polypyrrole

Exploring the Influence of Morphology on Bipolaron–Polaron Ratios and Conductivity in Polypyrrole in the Presence of Surfactants

Superior multifunctional polypyrrole anticorrosion coating modified by polydopamine decorated barium titanate nanoparticles on NiTi shape memory alloys

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