Flexible Supercapacitors Based on Bacterial Cellulose Paper Electrodes

Li, Shaohui; Huang, Dekang; Zhang, Bingyan; Xu, Xiaobao; Wang, Mingkui; Yang, Guang; Shen, Yan

doi:10.1002/aenm.201301655

Cited by 203 publications

(124 citation statements)

References 46 publications

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“…Nanostructured CPs are expected to show desirable energy storage performance due to their high surface area and short path lengths for ion migration as well as good electrochemical activity. Thus, substantial effort has been dedicated to deposit nanoscaled CPs on substrates with high surface area to achieve the preferred capacitance (Nyström et al 2009(Nyström et al , 2012Kim et al 2012;Sultana et al 2012;Yue et al 2012;Liang et al 2013;Li et al 2014;Wu et al 2014). Nyström et al reported a nanostructured high surface area electrode material composed of cellulose fibers from Cladophora algae individually coated with a 50 nm thin layer of PPy, giving rise to a new flexible device with a charge capacity of 33 mAh g -1 and a capacity retention of over 94 % after 100 cycles (Nyström et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole-coated cotton fabrics for flexible supercapacitor electrodes prepared using CuO nanoparticles as template

et al. 2015

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Monodispersed inorganic oxide nanoparticles are one kind of the most commonly used templates for efficient and controllable preparation of conducting polymer nanostructures. In this article, we report the fabrication and characterization of PPycoated cotton fabrics through in situ chemical polymerization by using CuO nanoparticles as template. The electrical conductivity of the coated samples increases dramatically to 10.0 S cm -1 with the introduction of CuO. The electrochemical properties of the obtained fabrics are examined by cyclic voltammetry and charge/discharge analysis. The increase of scan rate in the range of 5-50 mV s -1 has a small effect on the specific capacitance for the fabric electrode, pointing out the improved ion transportation in this electrode. The charge/discharge test further reveals that the fabric device shows high specific capacitance (225 F g -1 at a current density of 0.6 mA cm -2 ) and good cycling performance (about 92 % capacitance retention after 200 cycles) in aqueous electrolyte. These PPy-coated fabrics have potential to be used as electrode materials for wearable supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Polypyrrole-coated cotton fabrics for flexible supercapacitor electrodes prepared using CuO nanoparticles as template

et al. 2015

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“…[97] Moreover, the network is made up of a random assembly of cellulose nanofibers with a high aspect ratio and a diameter of 20-100 nm. [16,98] As a result, BC exhibits a large specific surface area. Furthermore, it can be industrially manufactured via the microbial fermentation process at a very low price.…”

Section: Thermal Transformation Approachmentioning

confidence: 99%

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Chen

Feng

Liang

et al. 2017

Advanced Energy Materials

170

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Therefore, it is necessary to develop highperformance energy storage devices for facilitating the effective utilization of intermittent renewable energy sources. [7][8][9] Among varieties of electrochemical energy storage devices, supercapacitors (known as electrochemical capacitors) [10,11] and some rechargeable batteries (lithium-ion batteries (LIBs), lithiumsulfur (Li-S) batteries, and metal-O 2 batteries) [12][13][14][15] are at the frontier, because they can transport high power and store high energy. Nowadays, they play an indispensable role in our daily life by powering numerous portable electronic devices (e.g., cell phones and laptops), hybrid electric vehicles, and large-scale electrical grids. [16][17][18][19] It is well accepted that the performance of energy storage devices mainly depended on their electrode materials. [20,21] Owing to the advantages of large surface area, light weight, good electrical conductivity, and high thermal/ chemical stability, carbon materials have been considered as the most important electrode materials of supercapacitors and rechargeable batteries [8,20,21] Hence, various nanostructured carbons, such as carbon/graphene quantum dots, [22,23] carbon nanofiber (CNFs), [16,24] carbon nanotubes (CNTs), [13,25] graphene [26][27][28][29][30][31][32] carbon nanosheets, [33,34] 3D carbon nanostructures, [35][36][37] and porous carbon, [38,39] have gained great attention. Among these materials, 3D carbon nanomaterials have some advantages. The interlinked architecture not only shortens transport distances for ions in the well-interconnected wall structure, but also provides a continuous pathway endowing for the fast electron transport. [40] Moreover, the structural interconnectivities guarantee higher electrical conductivity and better mechanical stability. [36,41] Thereby, the design and fabrication of various 3D carbonbased nanostructures, including carbon nanotube networks, graphene gels, graphene foams, and 3D CNFs, have been intensively investigated.Over the past few years, there are many reviews summarizing the progress of fabricating 3D carbon-based nanomaterials. For example, Schneider et al. overviewed the recent advance in the synthesis of 3D arranged carbon nanotube architectures. [42] Li et al. reviewed the carbon-based 3D nanostructures for supercapacitors. [36] Cao and Gui et al. comprehensively reviewed the recent progress in synthesis, properties, and energy applications of CNT sponges, aerogels, and hierarchical composites. [43] The development of high-performance electrochemical energy storage devices is critical for addressing energy crises and environmental pollution.

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“…Furthermore, the incorporation of PANI into porous flexible BC/MWNT paper through a simple anodic polymerization had a negligible influence on its mechanical strength and flexibility, as shown in Figure 10a. [160] The effect of different polymerization times for the PANI on the C sp of BC/MWNT/PANI (Figure 10b) was studied, and the C sp values were estimated to be 367, 442, 656, 557, and 375 F g −1 at a discharge current density of 1 A g −1 for the BC/ MWNT/PANI x electrodes with various polymerization times (x = 2, 5, 10, 15, and 20 min, respectively). The C sp value of the BC/MWCNTs/PANI 10 (656 F g −1 , 1 A g −1 ) is much larger than functionalized GN-PANI composite (388 F g −1 , 1 A g −1 ), [161] and comparable to the paper-Au/PANI composite electrode (560 F g −1 , 2.13 A g −1 ) [162] and GN-PANI paper (763 F g…”

Section: Bio-macromolecule and Conducting Polymer Based Compositesmentioning

confidence: 99%

Bio‐Nanotechnology in High‐Performance Supercapacitors

Zhang

Wang

et al. 2017

Advanced Energy Materials

182

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on seeking suitable electrode materials, and optimizing the electrode/electrolyte and electrode/current collector interface properties. As the core of such energystorage devices, the electrode materials directly determine the processing cost and performance of devices, such as their rate capability, specific capacitance (C sp ), cycling stability, etc, which enable the safe and highly-efficient use of energy. [1a,3] Based on the mechanisms of charge storage, SC electrodes can be classified as electric double layer electrodes (EDLEs), pseudocapacitive electrodes, and hybrid electrodes. Most of the EDLEs use carbon materials (activated carbon (AC), [4] carbon nanotubes (CNTs), [5] carbon nanofibers (CNFs), [6] graphene (GN), [7] etc.) as the electrode active materials and store energy only by electrostatic accumulation at the electrode/electrolyte interface. EDLEs usually show high charge-discharge rates and high cycling stability, while their energy densities (≈5 W h kg −1 ) are often greatly limited by the Brunauer-Emmett-Teller (BET) specific surface area (S BET ) and the pore size distribution of electrode materials. Pseudocapacitive electrodes are generally based on conductive polymers (polypyrrole (PPy), polyaniline (PANI), polythiophene, etc.) [8] and transition metal oxides/ hydroxides (Fe 3 O 4 , MnO 2 , RuO 2 , NiO, Co 3 O 4 , Ni(OH) 2 , etc.), [9] and use reversible faradic processes for energy storage. Compared to EDLEs, pseudocapacitive electrodes can offer much higher storage capabilities because of the faradic reactions involved. In the case of transition metal oxides/hydroxides, however, their poor electrical conductivity generally leads to low power density. In addition, the easily damaged structures of conductive polymers during the faradic processes usually lead to poor cycling stability. To resolve these problems, hybrid electrodes (GN/PPy, CNTs/PPy, GN/MnO 2 , PPy/MnO 2 , NiMoO 4 / PANI, CNTs/MoS 2 , PPy/MoS 2 , etc.) [10] have been developed to take complete advantage of both EDLEs and pseudocapacitive electrodes. For a long time, nanotechnological techniques have been considered as promising approaches to prepare highly efficient SC electrodes. [1b,11] Compared with micro-and submillimeter materials, nanomaterials as active SC electrodes have the following advantages: [12] (1) A high S BET means sufficient electroactive sites and thus high capacity utilization of electrode materials; (2) Intrinsic porous structures and small particle sizes, which contribute to the complete penetration of the electrolyte and reduce the diffusion path of electrolyte ions; (3) Highly ordered hierarchical structures can relieve the stress within the materials and offer stable channels for electron transfer, which can ensure good cycling stability; (4) The The use of bio-nanotechnology for the fabrication of diverse functional nanomaterials with precisely controlled morphologies and microstructures is attracting considerable attention due to its sustainability and renewability. As one of the key energy storag...

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Flexible Supercapacitors Based on Bacterial Cellulose Paper Electrodes

Cited by 203 publications

References 46 publications

Polypyrrole-coated cotton fabrics for flexible supercapacitor electrodes prepared using CuO nanoparticles as template

Polypyrrole-coated cotton fabrics for flexible supercapacitor electrodes prepared using CuO nanoparticles as template

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Bio‐Nanotechnology in High‐Performance Supercapacitors

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