three-dimensional polypyrrole mno2 composite networks

A three

2017/5/1Manganese oxides are promising anode materials for their high-energy density. However, they suffer from poor rate capability and fast capacity fading. Herein, we construct a three-dimensional (3D) core-shell structured polypyrrole (PPy)/MnO 2-reduced graphene oxide (rGO)-carbon nanotubes (CNTs) composite via a facile two-step method.

Constructed uninterrupted charge

2014/1/8A type of freestanding three-dimensional (3D) micro/nanointerconnected structure, with a conjunction of microsized 3D graphene networks, nanosized 3D carbon nanofiber (CNF) forests, and consequently loaded MnO2 nanosheets, has been designed as the

Recent Advances in Flexible Supercapacitors

Polypyrrole PSS Polystyrene Sulfonate PTFE Polytetrafluoroethylene (PTFE) PVA Polyvinyl Alcohol PVDF Polyvinylidene fluoride rGO He Y, Chen W, Li X, Zhang Z, Fu J, Zhao C, Xie E (2013) Freestanding three-dimensional graphene/MnO2 composite ACS

ZnFe 2 O 4 PDAPolypyrrole composites with efficient

2021/3/12Three-dimensional RL maps over the frequency range of 18–40 GHz for the ZnFe 2 O 4 PDA 0.1 PPy composites with different filler loadings: a, b 5 wt%, c, d 10 wt%, e, f 17 wt%, g, h 25 wt%. RL curves for the ZnFe 2 O 4 PDA 0.1 PPy composites at 1.5 mm thicknesses with different filler loadings in the i 18–26.5 GHz region and j 26.5–40 GHz region.

[PDF] Room

The development of tissue engineering (TE) provides a promising alternative strategy for bone healing and regeneration. For the successful application of TE, a scaffold with a three-dimensional (3D) hierarchical structure is required to provide sites for cell adhesion and proliferation. In the present study, by using nickel foam (NF) as a template, we reported a simple but low-cost strategy to

Structure

With the fast bloom of flexible electronics and green vehicles, it is vitally important to rationally design and facilely construct customized functional materials with excellent mechanical properties as well as high electrochemical performance. Herein, by utilizing two modern industrial techniques, digital light processing (DLP) and chemical vapor deposition (CVD), a unique 3D hollow graphite

A three

Manganese oxides are promising anode materials for their high-energy density. However, they suffer from poor rate capability and fast capacity fading. Herein, we construct a three-dimensional (3D) core-shell structured polypyrrole (PPy)/MnO 2-reduced graphene oxide (rGO)-carbon nanotubes (CNTs) composite via a facile two-step method.

Construction of vertically aligned PPy nanosheets

Abstract Three-dimensional self-assemble polypyrroleMnCo 2 O 4 nanoarchitectures on graphite foam are fabricated via hydrothermal method and in situ polymerization process. During polymerization, the dopant p-toluenesulfonic acid can partially etch the MnCo 2 O 4 nanobelts, while the dissociated Mn/Co ions may lead to the formation of metal-N bond in the polypyrrole nanosheets.

Carbon nanotube

A carbon nanotube (CNT) sponge contains a three-dimensional conductive nanotube network, and can be used as a porous electrode for various energy devices. We present here a rational strategy to fabricate a unique CNTpolypyrrole (PPy) core-shell sponge, and demonstrate its application as a highly compressible supercapacitor electrode with high performance. A PPy layer with optimal

Three

2019/8/6The three-dimensional (3D) porous nanostructures have shown attractive promise for flexible microsupercapacitors due to their merits of more exposed electrochemical active sites, higher ion diffusion coefficient, and lower charge-transfer resistance. Herein, a highly opened 3D network of reduced graphene oxide/poly(3,4-ethylenedioxythiophene) (rGO/PEDOT) was constructed through the laser

Polymorphous Supercapacitors Constructed from Flexible

Polymorphous supercapacitors were constructed from flexible three-dimensional carbon network/polyaniline (PANI)/MnO2 composite textile electrodes. The flexible textile electrodes were fabricated through a layer-by-layer construction strategy: PANI, carbon nanotubes (CNTs), and MnO2 were deposited on activated carbon fiber cloth (ACFC) in turn through an electropolymerization

Facile Synthesis of 3D MnO2–Graphene and Carbon

Facile Synthesis of 3D MnO 2 –Graphene and Carbon Nanotube–Graphene Composite Networks for High‐Performance, Flexible, All‐Solid‐State Asymmetric Supercapacitors Zheye Zhang School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074 P.

Three dimensional graphene networks for

2015/6/1He Y M, Chen W J, Li X D, et al. Freestanding three-dimensional graphene/MnO2 composite networks as ultra light and flexible supercapacitor electrodes[J]. Acs Nano, 2013, 7(1): 174-182. [26] Wang X, Zhang Y, Zhi C, et al. Three-dimensional strutted graphene

Cauliflower‐like polypyrroleMnO2 modified carbon

BACKGROUND The morphology and size of MnO 2 that deposited on a carbon clothelectrode have dramatic effects on the electrochemical properties and cycling life. Currently, MnO 2 and its composite structures with zero‐dimensional (0D) nanospheres, one‐dimension (1D) nanotubes and two‐dimension (2D) nanomesh have been successfully synthesized and employed in MFC.

Three dimensional graphene networks for supercapacitor

2015/6/1He Y M, Chen W J, Li X D, et al. Freestanding three-dimensional graphene/MnO2 composite networks as ultra light and flexible supercapacitor electrodes[J]. Acs Nano, 2013, 7(1): 174-182. [26] Wang X, Zhang Y, Zhi C, et al. Three-dimensional strutted graphene

Facile and scalable fabrication of

2018/7/13In this study, to improve the specific capacitance of graphene-based supercapacitor, novel quadri composite of G/PPy/MnOx/Cu(OH)2 was synthesized by using a facile and inexpensive route. First, a two-step method consisting of thermal decomposition and in situ oxidative polymerization was employed to fabricate graphene/polypyrrole/manganese oxide composites. Second, Cu(OH)2

Ultrafine MnO2 Nanowire Arrays Grown on Carbon Fibers

Large-area ultrafine MnO2 nanowire arrays (NWA) directly grew on a carbon fiber (CF, used as a substrate) by a simple electrochemical method, forming three-dimensional (3D) hierarchical heterostructures of a CFMnO2 NWA composite. As an electrode for supercapacitors, the CFMnO2 NWA composite exhibits excellent electrochemical performances including high specific capacitance

Three

Flexible energy storage systems have recently attracted great interest for portable electronic devices. The functionalization of graphene provides vast platform in tailoring its nanostructure and properties for energy storage via facile processing. Here, we first demonstrate the development of chemically bonded graphene oxide and bacterial cellulose hybrid composite coated with polypyrrole for

Preparation of a Three

Three-dimensional ordered macroporous (3DOM) carbon nanotube (CNT)/polypyrrole (PPy) composite electrodes for supercapacitor application were prepared through cyclic voltammetric copolymerization from a solution containing both acid-treated CNTs and pyrrole monomers. A self-assembled SiO2 colloidal crystal was used as the sacial template. After electrochemical

A three

2017/5/1Manganese oxides are promising anode materials for their high-energy density. However, they suffer from poor rate capability and fast capacity fading. Herein, we construct a three-dimensional (3D) core-shell structured polypyrrole (PPy)/MnO 2-reduced graphene oxide (rGO)-carbon nanotubes (CNTs) composite via a facile two-step method.

ZnFe 2 O 4 PDAPolypyrrole composites with efficient

2021/3/12Three-dimensional RL maps over the frequency range of 18–40 GHz for the ZnFe 2 O 4 PDA 0.1 PPy composites with different filler loadings: a, b 5 wt%, c, d 10 wt%, e, f 17 wt%, g, h 25 wt%. RL curves for the ZnFe 2 O 4 PDA 0.1 PPy composites at 1.5 mm thicknesses with different filler loadings in the i 18–26.5 GHz region and j 26.5–40 GHz region.

3D CNTs Networks Enable MnO2 Cathodes with High

3D CNTs Networks Enable MnO 2 Cathodes with High Capacity and Superior Rate Capability for Flexible Rechargeable Zn–MnO 2 Batteries Xiyue Zhang MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat‐Sen University, Guangzhou, 510275 P. R. China

A three

Herein, we construct a three-dimensional (3D) core-shell structured polypyrrole (PPy)/MnO 2-reduced graphene oxide (rGO)-carbon nanotubes (CNTs) composite via a facile two-step method. In the structure, the CNTs can facilitate fast electron conduction and keep structural integrity.

Three

Three-Dimensional Graphene Materials for Supercapacitors Gurjinder Kaur, Narasimha Vinod Pulagara, Indranil Lahiri Three-dimensional (3D) graphene architectures have allured remarkable attention for supercapacitor (SC) applications owing to their highly accessible surface area, low density, structural interconnectivity (micro-, meso- and macro-interconnected pores), excellent electrical

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