Filling Ti3C2Tx nanosheets into melamine foam towards a highly compressible all-in-one supercapacitor

Guo, Rui; Han, Xiying; Yuan, Peng; He, Xuexia; Li, Qi; Sun, Jie; Dang, Liqin; Liu, Zong–Huai; Zhang, Yating; Lei, Zhibin

doi:10.1007/s12274-021-3970-2

Cited by 23 publications

(11 citation statements)

References 74 publications

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“…A traditional three-electrode cell consisting of a working electrode, Ag/AgCl reference electrode, and Pt foil counter electrodes was used to test the electrode performance. The PEDOT film with a typical size of 1.0 × 0.5 cm 2 was directly used as a working electrode, and its specific capacitance (F g –1 ) was derived from the galvanostatic charge–discharge curves according to the following formula , C normals = 2 I ∫ V d t m V 2 true| .25ex2ex V f V i where I is the current density (A), m is the mass of the electrode (g), ∫ V d t is the integral current area of the discharge curve, and ( V ) is the potential changing from initial V i to final V f .…”

Section: Methodsmentioning

confidence: 99%

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

Han

Sun

et al. 2023

ACS Sustainable Chem. Eng.

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Self-supporting highly conductive polymers are strongly demanded for high-rate flexible supercapacitors. In this work, we demonstrate that solution-processed poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires with tens of micrometers in length can facilely assemble into highly flexible PEDOT films for high-rate supercapacitors. Our results show that the conductivity of the films (50.8−100 S cm −1 ) relies on the polymerization time of the nanowires and longer time favors doping of dodecyl sulfate anions but results in a decrease of carrier mobility from 16.08 to 6.05 cm 2 V −1 s −1 . A specific capacitance of 137 F g −1 along with 98% capacitance retention after 10 000 cycles has been achieved in 1 M H 2 SO 4 . Moreover, due to the favorable ion and electron pathways and rapid pseudocapacitive redox reactions, these PEDOT films exhibit nearly thickness-independent capacitive performance even as the film thickness increases up to 100 μm. A solid-state capacitor built with a PEDOT film delivers an energy density of 1.38 mWh cm −3 at 27.9 mW cm −3 . Meanwhile, it also exhibits superior long-term electrochemical stability without obvious capacitance decay and excellent structural integrity under various deformation tests. These outstanding properties demonstrate that the PEDOT nanowires could become one of the promising building blocks for developing flexible electrodes with an interconnected network for future high-rate energy storage devices.

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Section: Methodsmentioning

confidence: 99%

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

Han

Sun

et al. 2023

ACS Sustainable Chem. Eng.

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“…The LICs were fabricated using the prelithiated E-HNb 3 O 8 -PEDOT as the negative electrode, YP-50F as the positive electrode, and glass microfiber filters as the separator. The following equations were adopted to calculate specific capacitance (F g –1 ), energy density (Wh kg –1 ), and power density (W kg –1 ) of the LIC. , C normalm = 2 I normalm ∫ V nobreak0em0.25em⁡ normald t V 2 false| V normali V normalf E = C normalm false( V normalf − V normali false) 2 2 × 3.6 P = E × 3600 italict where I m , t and ∫ V d t are the discharge current density (A g –1 ), discharge time (s), and integral current area of the discharge curves, respectively. The V represents the potential (V) varying from the initial value ( V i ) to the final value ( V f ).…”

Section: Methodsmentioning

confidence: 99%

“…The following equations were adopted to calculate specific capacitance (F g −1 ), energy density (Wh kg −1 ), and power density (W kg −1 ) of the LIC. 31,32 C…”

Section: ■ Introductionmentioning

confidence: 99%

PEDOT Nanowires Connecting Exfoliated HNb₃O₈ Nanosheets as High-Rate Anode for Lithium-Ion Capacitor

Zhang,

Yu,

Zhang

et al. 2023

ACS Sustainable Chem. Eng.

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“…Recently, several studies have proposed integration of the electrode/electrolyte/electrode multilayers into a whole, to construct all-in-one configuration for flexible supercapacitors. − Du et al proposed a step-by-step filtration strategy to prepare graphene oxide (GO)-TiO 2 /GO/GO-TiO 2 three-layer membrane, followed by reduction of GO for reduced graphene oxide (RGO) to develop RGO-TiO 2 /GO/RGO-TiO 2 all-in-one supercapacitors (ASCs), which delivered the areal capacitance of 56 mF cm –2 at 2 mV s –1 and a slight change in capacitance under bending angles of 90° and 180° . Wang et al fabricated an ASC based on polypropylene films (PPF) as the middle separator, both sides of which were gradually covered with electroless plating gold (Au) and electrochemically deposited polypyrrole (PPy)-GO composites as the electrodes .…”

Section: Introductionmentioning

confidence: 99%

Covalent Bonding Homo-All-in-One Configuration Enables a Flexible Supercapacitor with Superior Mechanical Durability Exceeding 50 000 Cyclic Deformations

Sun

et al. 2023

ACS Appl. Energy Mater.

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All-in-one configured supercapacitor holds great promise in addressing cyclic deformation-induced relative displacement and delamination among electrode/electrolyte/electrode faced by the conventional laminated supercapacitor, but its interfacial interactions among heterogeneous electrode/electrolyte/electrode only depend on weak secondary or physical bonds, leading to insufficient mechanical durability. Herein, a concept of covalent bonding homo-all-in-one configuration is proposed to construct strong covalent bonding interfaces among electrode/electrolyte/electrode comprising homomatrix polymer PVA through simultaneous chemical cross-linking of the homomatrixes and interfaces, thereby achieving mechanically durable homo-all-in-one supercapacitors (cPMP/cPVA/cPMP HSCs). Based on the adjustment in cross-linking time, seamlessly integrated interfaces form in the cPMP/cPVA/cPMP HSCs, which achieve high mechanical properties, remarkable interfacial bonding strength, and low interfacial charge transfer resistance. In sharp contrast to conventional laminated supercapacitors, the cPMP/cPVA/cPMP HSCs deliver superior areal capacitance of 268.8 mF cm–2 at 5 mV s–1 and unexpected cyclic stability with capacitance retention of 104% after 20 000 charge–discharge cycles. It is highlighted that the cPMP/cPVA/cPMP HSCs reach an unprecedented level of mechanical durability with capacitance retention of 103% and 101% exceeding 50 000 bending and twisting cycles, respectively. Furthermore, the cPMP/cPVA/cPMP HSCs are demonstrated to light up a red LED bulb under flat, bending, twisting, and even folding conditions. Those findings are intended to lead to an advanced design trend for the development of covalent bonding homo-all-in-one configured supercapacitors toward flexible and wearable electronic applications.

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Filling Ti3C2Tx nanosheets into melamine foam towards a highly compressible all-in-one supercapacitor

Cited by 23 publications

References 74 publications

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

PEDOT Nanowires Connecting Exfoliated HNb₃O₈ Nanosheets as High-Rate Anode for Lithium-Ion Capacitor

Covalent Bonding Homo-All-in-One Configuration Enables a Flexible Supercapacitor with Superior Mechanical Durability Exceeding 50 000 Cyclic Deformations

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Filling Ti3C2Tx nanosheets into melamine foam towards a highly compressible all-in-one supercapacitor

Cited by 23 publications

References 74 publications

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

Highly Flexible PEDOT Film Assembled with Solution-Processed Nanowires for High-Rate and Long-Life Solid-State Supercapacitors

PEDOT Nanowires Connecting Exfoliated HNb3O8 Nanosheets as High-Rate Anode for Lithium-Ion Capacitor

Covalent Bonding Homo-All-in-One Configuration Enables a Flexible Supercapacitor with Superior Mechanical Durability Exceeding 50 000 Cyclic Deformations

Contact Info

Product

Resources

About

PEDOT Nanowires Connecting Exfoliated HNb₃O₈ Nanosheets as High-Rate Anode for Lithium-Ion Capacitor

Covalent Bonding Homo-All-in-One Configuration Enables a Flexible Supercapacitor with Superior Mechanical Durability Exceeding 50 000 Cyclic Deformations