Biotemplated hierarchical polyaniline composite electrodes with high performance for flexible supercapacitors

Chang, Cheng-Ming; Hu, Zh-Hao; Lee, Ting-Yin; Huang, Yi-An; Ji, Wei-Fu; Liu, Wei‐Ren; Yeh, Jui‐Ming; Wei, Yen

doi:10.1039/c6ta01781a

Cited by 47 publications

(10 citation statements)

References 68 publications

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“…As displayed in Figure f, the HCM–0.05PANI-based SSC retained about 98.5% of the initial specific capacitance after 3000 cycles and a gentle reduction of the capacitance to 90.6% after 10 000 cycles, just a little bit less than that for HCM, indicating an excellent cycling stability. The cycling stability of HCM–PANI was comparable or better than that of many reported carbon–PANI composite-based cells. − The improved cycling stability mainly benefited from three factors: the continuously interconnected carbon nanofiber structure allows fast movement of ions inside the whole electrode; homogeneous PANI nanoclusters uniformly deposited over the carbon nanofibers efficiently reduced the volume expansion of PANI caused by the doping/dedoping process; and uniformly doped nitrogen and oxygen of HCM offered favorable hydrophilicity to benefit the stable deposition of PANI and prevented PANI from falling off during the charge–discharge process. SEM images of HCM–0.05MPANI after 10 000 cycles are presented in Figure S12.…”

Section: Results and Discussionmentioning

confidence: 89%

Distinctive Construction of Chitin-Derived Hierarchically Porous Carbon Microspheres/Polyaniline for High-Rate Supercapacitors

Gao

Xiong

et al. 2018

ACS Appl. Mater. Interfaces

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Recently, nanostructured porous carbons are attracting significant interest in various important applications. However, a green and innovative method to fabricate hierarchically porous-structured carbon is still a challenge. In the present work, hierarchically porous carbon microspheres (HCMs) were prepared by pyrolyzing the chitin microspheres fabricated from a chitin/chitosan blend solution, in which chitosan was used as a forming agent of nanopores/nanochannels to construct the microspheres. The HCM displayed hierarchical porous structure and improved specific surface area of 1450 m/g. For the application of HCM in hybrid electrode materials as supercapacitors, polyaniline (PANI) nanoclusters were further deposited on the surface of HCM. A symmetric supercapacitor based on HCM-PANI exhibited high rate capability with retaining over 64% of the capacitance as the scan rate increased from 2 to 500 mV/s. This work introduced a distinctive and green method to fabricate hierarchically porous carbon materials, having considerable application prospect for energy storage.

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Section: Results and Discussionmentioning

confidence: 89%

Distinctive Construction of Chitin-Derived Hierarchically Porous Carbon Microspheres/Polyaniline for High-Rate Supercapacitors

Gao

Xiong

et al. 2018

ACS Appl. Mater. Interfaces

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“…All CV curves show a broad oxidation and reduction peak ascribed to the pseudocapacitive behavior of PANI. These broad peaks are associated with the conversion of leucomeraldine to emeraldine and emeraldine to pernigraniline forms of PANI [59][60][61]. It is observed that the area under CV curves increased from P-1 to P-3 and it is maximum for P-3.…”

Section: Resultsmentioning

confidence: 91%

Capacitive property studies of inexpensive SILAR synthesized polyaniline thin films for supercapacitor application

et al. 2019

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The polyaniline (PANI) is an eco-friendly conductive polymer which has been considered for diverse applications. The partially oxidized phase of the PANI is useful for the charge storage application. Here, a unique nanograin/nanofiber structured PANI was grown on inexpensive stainless steel (SS) current collector by the simple oxidative polymerization process and its charge storage properties were systematically investigated. For that, the inexpensive successive ionic layer adsorption reaction method was used to grow a uniform nanostructured PANI on the SS conductor. This evolution of the nanostructure was studied with the Field emission scanning electron microscope. Furthermore, the as-prepared PANI was confirmed by the X-ray diffraction and the Fourier-transform infrared spectroscopy. In the half cell electrochemical testing, the prepared PANI exhibited a maximum specific capacitance of 710 F g −1 with a specific discharge capacity of 119 mAh −1 at 0.2 mA cm −2 in 1 M H 2 SO 4 for the supercapacitor application. Also, by using the power-law relation it was observed that, in a charging and a discharging current, initially a contribution of the diffusive faradaic reactions is more as compared with the surface capacitive non-faradaic reactions.

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“…The wings were correctly replicated as can be seen in Figure 2, although pores in the structure were reduced and ridges achieved a serpentine shape compared to the original template [25]. Mycelium pellets [122] and polyalanine [123] have also been used to prepare useful materials for the production of supercapacitor devices.…”

Section: Energy Capture and Storagementioning

confidence: 91%

Bio-Templating: An Emerging Synthetic Technique for Catalysts. A Review

et al. 2021

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In the last few years, researchers have focused their attention on the synthesis of new catalyst structures based on or inspired by nature. Biotemplating involves the transfer of biological structures to inorganic materials through artificial mineralization processes. This approach offers the main advantage of allowing morphological control of the product, as a template with the desired morphology can be pre-determined, as long as it is found in nature. This way, natural evolution through millions of years can provide us with new synthetic pathways to develop some novel functional materials with advantageous properties, such as sophistication, miniaturization, hybridization, hierarchical organization, resistance, and adaptability to the required need. The field of application of these materials is very wide, covering nanomedicine, energy capture and storage, sensors, biocompatible materials, adsorbents, and catalysis. In the latter case, bio-inspired materials can be applied as catalysts requiring different types of active sites (i.e., redox, acidic, basic sites, or a combination of them) to a wide range of processes, including conventional thermal catalysis, photocatalysis, or electrocatalysis, among others. This review aims to cover current experimental studies in the field of biotemplating materials synthesis and their characterization, focusing on their application in heterogeneous catalysis.

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Biotemplated hierarchical polyaniline composite electrodes with high performance for flexible supercapacitors

Abstract: A bioinspired structure flexible supercapacitor device with excellent electrochemical capacitance directly through a replica technique using natural resources has been developed.

Cited by 47 publications

References 68 publications

Distinctive Construction of Chitin-Derived Hierarchically Porous Carbon Microspheres/Polyaniline for High-Rate Supercapacitors

Distinctive Construction of Chitin-Derived Hierarchically Porous Carbon Microspheres/Polyaniline for High-Rate Supercapacitors

Capacitive property studies of inexpensive SILAR synthesized polyaniline thin films for supercapacitor application

Bio-Templating: An Emerging Synthetic Technique for Catalysts. A Review

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