2015
DOI: 10.1021/acsnano.5b02846
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Surface Modified Nanocellulose Fibers Yield Conducting Polymer-Based Flexible Supercapacitors with Enhanced Capacitances

Abstract: We demonstrate that surface modified nanocellulose fibers (NCFs) can be used as substrates to synthesize supercapacitor electrodes with the highest full electrode-normalized gravimetric (127 F g(-1)) and volumetric (122 F cm(-3)) capacitances at high current densities (300 mA cm(-2) ≈ 33 A g(-1)) until date reported for conducting polymer-based electrodes with active mass loadings as high as 9 mg cm(-2). By introducing quaternary amine groups on the surface of NCFs prior to polypyrrole (PPy) polymerization, th… Show more

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Cited by 250 publications
(130 citation statements)
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“…As one of the key energy storage devices, conventional supercapacitors are still too heavy, thick, rigid and bulky to fully meet the practical requirements for portable devices due to the presence of inactive components such as metal substrates, binders and conductive additives [26]. In order to meet the growing demands of modern society, some reformations were brought into SCs to make them small, thin, lightweight, flexible and even wearable.…”
Section: Introductionmentioning
confidence: 99%
“…As one of the key energy storage devices, conventional supercapacitors are still too heavy, thick, rigid and bulky to fully meet the practical requirements for portable devices due to the presence of inactive components such as metal substrates, binders and conductive additives [26]. In order to meet the growing demands of modern society, some reformations were brought into SCs to make them small, thin, lightweight, flexible and even wearable.…”
Section: Introductionmentioning
confidence: 99%
“…However, meeting the increasing demand of future emerging markets are lightweight, solid state, and flexible energy devices4567. Among them, supercapacitors (SCs) are considered as promising candidates that can offer long cycle life, high power density, fast charge/discharge rates and safety89101112131415. Unfortunately, the energy densities of supercapacitors are still unsatisfactory, which seriously limit their practical applications.…”
mentioning
confidence: 99%
“…Two-electrode symmetric supercapacitor devices hermetically heat-sealed in laminated aluminum foil were made as previously described (Wang et al 2014(Wang et al , 2015. A piece of filter paper, pre-soaked with 1.0 M H 2 SO 4 solution and used as the separator, was sandwiched between two carbon electrodes.…”
Section: Electrochemical Characterization and Analysismentioning
confidence: 99%
“…Supercapacitors can be divided into two categories according to their charge storage mechanisms: pseudocapacitors and electrical double layer capacitors (EDLCs) (Wang et al 2012;Winter and Brodd 2004). Pseudocapacitors store electrical energy by fast, reversible faradaic reactions (redox reactions, electrosorption or intercalation) occurring on the electrode materials, typically of metal oxides (Jeong et al 2016;Wang et al 2013a) or conducting polymers (Wang et al 2014(Wang et al , 2015Zhao et al 2017). EDLCs are associated with an electrodepotential-dependent accumulation of electrostatic charge at the interface between the electrolyte and the electrode, typically of carbon (Ghosh and Lee 2012).…”
Section: Introductionmentioning
confidence: 99%