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• W2332809056 abstract "Here, we report synthesis of a 3-dimensional (3D) porous polyaniline (PANI) anchored on pillared graphene (G-PANI-PA) as an efficient charge storage material for supercapacitor applications. Benzoic acid (BA) anchored graphene, having spatially separated graphene layers (G-Bz-COOH), was used as a structure controlling support whereas 3D PANI growth has been achieved by a simple chemical oxidation of aniline in the presence of phytic acid (PA). The BA groups on G-Bz-COOH play a critical role in preventing the restacking of graphene to achieve a high surface area of 472 m2/g compared to reduced graphene oxide (RGO, 290 m2/g). The carboxylic acid (−COOH) group controls the rate of polymerization to achieve a compact polymer structure with micropores whereas the chelating nature of PA plays a crucial role to achieve the 3D growth pattern of PANI. This type of controlled interplay helps G-PANI-PA to achieve a high conductivity of 3.74 S/cm all the while maintaining a high surface area of 330 m2/g compared to PANI-PA (0.4 S/cm and 60 m2/g). G-PANI-PA thus conceives the characteristics required for facile charge mobility during fast charge–discharge cycles, which results in a high specific capacitance of 652 F/g for the composite. Owing to the high surface area along with high conductivity, G-PANI-PA displays a stable specific capacitance of 547 F/g even with a high mass loading of 3 mg/cm2, an enhanced areal capacitance of 1.52 F/cm2, and a volumetric capacitance of 122 F/cm3. The reduced charge-transfer resistance (RCT) of 0.67 Ω displayed by G-PANI-PA compared to pure PANI (0.79 Ω) stands out as valid evidence of the improved charge mobility achieved by the system by growing the 3D PANI layer along the spatially separated layers of the graphene sheets. The low RCT helps the system to display capacitance retention as high as 65% even under a high current dragging condition of 10 A/g. High charge/discharge rates and good cycling stability are the other highlights of the supercapacitor system derived from this composite material." @default.
• W2332809056 created "2016-06-24" @default.
• W2332809056 creator A5030409642 @default.
• W2332809056 creator A5036104237 @default.
• W2332809056 creator A5061395232 @default.
• W2332809056 date "2015-03-31" @default.
• W2332809056 modified "2023-09-29" @default.
• W2332809056 title "3D Polyaniline Porous Layer Anchored Pillared Graphene Sheets: Enhanced Interface Joined with High Conductivity for Better Charge Storage Applications" @default.
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• W2332809056 doi "https://doi.org/10.1021/acsami.5b00504" @default.
• W2332809056 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25783045" @default.
• W2332809056 hasPublicationYear "2015" @default.
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