01887nas a2200181 4500008004100000245011400041210006900155260000800224300001200232490000600244520122000250653002901470653003201499653001601531100001301547700002301560856012201583 2017 eng d00aLarge anion incorporation to improve the performance of large, paper based conducting polymer supercapacitors0 aLarge anion incorporation to improve the performance of large pa cSEP a112-1170 v53 a

Poly(3,4-ethylenedioxythiophene) (PEDOT) is a stable conducting polymer, hence its dispersion is widely used in commercial devices. However, PEDOT's charge storage properties are not impressive. Thus, improvement in charge storage properties of PEDOT will render the possibility of fabricating stable energy storage devices such as supercapacitors. A fundamentally different approach is required to achieve this objective. We envisioned that the charge storage property of PEDOT can be improved by trapping large anions. These ions would facilitate better ion transport into the PEDOT matrix from the electrolyte and increase the efficiency of supercapacitors. Furthermore, a large anion such as triiodide is relatively immobile in the polymer matrix, hence we hypothesize the ions to be trapped in the polymer. To test this hypothesis, triiodide trapped PEDOT based supercapacitors are fabricated on paper substrates. A 1 cm2 triiodide incorporated PEDOT based supercapacitor exhibited a specific capacitance of 486 F/g. On the other hand, PEDOT without triiodide incorporation exhibited a specific capacitance of 221 F/g. Indeed, a device with an area of 32 cm2 exhibited a specific capacitance of 476 F/g.

10aFlexible Supercapacitors10aPaper based Supercapacitors10apolyphenols1 aJain, B.1 aKrishnamoorthy, K. uhttps://library.ncl.res.in/content/large-anion-incorporation-improve-performance-large-paper-based-conducting-polymer01818nas a2200217 4500008004100000022001400041245007900055210006900134260000800203300001200211490000600223520109400229653002501323653002701348653002901375653001501404653002901419100001801448700002401466856011001490 2020 eng d a2194-428800aPorphyrin-based conducting polymer hydrogel for supercapacitor application0 aPorphyrinbased conducting polymer hydrogel for supercapacitor ap cJUN a20000610 v83 a

Herein, the electrochemical properties and energy storage capability of a flexible, all-solid-state supercapacitor based on the supramolecular assembly of polypyrrole (PPy) and the anion of 5,10,15,20-tetrakis(4-sulfonatophenyl)-21H,23H-porphine manganese(III) chloride (MnTSPP) are reported. The electrode material consists of a conductive polymer hydrogel formed through the gelation initiated by cross-linking of the dopant MnTSPP anion in the PPy chains. The morphology of the cross-linked polymer hydrogel is that of a particle-decorated nanofiber, which can perform as a flexible supercapacitor electrode material with a specific capacitance of 300 Fg(-1) and capacitance retention of 78% up to 10 000 cycles. The anion of MnTSPP plays a pivotal role in enhancing the charge storage capability by facilitating the electron transfer between the polymer interchains. In addition, the steric hindrance due to the large size of the dopant counter ions of MnTSPP reduces the counterion drain effect and structural pulverization of PPy, thereby improving the capacitive retention.

10aconductive hydrogels10aenergy storage devices10aFlexible Supercapacitors10ananofibers10aporphyrin-based polymers1 aDas, Debasree1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/porphyrin-based-conducting-polymer-hydrogel-supercapacitor-application02664nas a2200277 4500008004100000022001400041245017100055210006900226260000800295300001100303490000800314520165600322653002501978653002302003653002902026653002002055653002702075100001002102700003002112700002002142700001602162700003102178700002802209700001902237856013002256 2026 eng d a0378-775300aEnhanced electrochemical performance of flexible polymer supercapacitors through optimization of organic acid-doping, carbon nanomaterials, and fabrication techniques0 aEnhanced electrochemical performance of flexible polymer superca cFEB a2390420 v6663 a

The proliferation of portable and wearable electronics necessitates flexible, high-performance energy storage devices. Flexible supercapacitors are poised to meet these demands due to their high power density, flexibility, and durability but scalable fabrication remains challenging due to costly and complex manufacturing methods. This study addresses this issue by implementing scalable, cost-effective spray coating and screen printing techniques to fabricate flexible micro-interdigitated supercapacitors (FMIS) based on Polyaniline (PANI) composites with carbon nanomaterials, using organic acids as crosslinking agents synthesized via hydrogel strategy. The formation of PANI emeraldine salt was verified through X-ray photoelectron spectroscopy, indicating key amine and imine functionalities, while scanning electron microscopy revealed surface morphologies with enhanced active surface areas beneficial for charge storage. Advanced 3D tomography maps porosity distribution and surface area per unit volume, correlating with electroactive areas calculated from the Randles-Sevcik equation. Electrochemical testing via cyclic voltammetry demonstrates an impressive areal capacitance of 173.2 +/- 9.6 mF cm-2 at 10 mV s-1 with Dunn's method distinguishing capacitive from diffusive contributions. Furthermore, EIS measurements highlight lower solution resistance in screen-printed devices, emphasizing the advantages of optimized electrode morphology for efficient charge transport. This study establishes a scalable approach for high-performance flexible supercapacitors, paving the way for next-generation energy storage solutions.

10aCarbon nanomaterials10aCoating techniques10aFlexible Supercapacitors10aPANI composites10aX-ray micro-tomography1 aParul1 aLakshmi, Racherla, Bhagya1 aUtturkar, Vivek1 aNatu, Varun1 aAramanda, Shanmukha, Kiran1 aRamamurthy, Praveen, C.1 aKaka, Fiyanshu uhttps://library.ncl.res.in/content/enhanced-electrochemical-performance-flexible-polymer-supercapacitors-through-optimization