Construction of microfluidic-oriented polyaniline nanorod arrays/graphene composite fibers for application in wearable micro-supercapacitors

Wu, Xingjiang; Wu, Guan; Tan, Pengfeng; Chen, Su; Hong, Ri; Wang, Fengxiang

doi:10.1039/c7ta11135e

Cited by 96 publications

(95 citation statements)

References 45 publications

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“…The progress in the design of the spinneret is highlighted by introducing microfluidic spinnerets for complex component spinning, as it has rendered GBFs with desirable structures in a simple process . We have designed a microfluidic spinneret where GO and poly(vinyl alcohol) (PVA)/alginate sodium component could be extruded spontaneously from one outlet, forming a GO/PVA‐alginate/GO layered structure in a coagulation bath for shape fixing.…”

Section: Advance In Preparation Of Gbfsmentioning

confidence: 99%

Graphene‐Based Fibers: Recent Advances in Preparation and Application

Zhang

2019

Advanced Materials

110

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investigated [17][18][19][20] for building graphene-based fibers (GBFs) over recent years. [21][22][23] These unique macroscopic 1D assemblies of microscopic 2D graphene building blocks are of lightweight, high specific surface area (SSA), and remarkable mechanical and electrical properties, thus qualifying them as ideal materials for fiber electronics. [14,[24][25][26] Currently, the well-developed wet-spinning method is widely adopted in preparing GBFs, [27,28] while newly designed spinning methods with microfluidic spinnerets and different kinds of coagulation bath have yielded GBFs with novel structures and functions. Apart from these methods, emerging techniques such as chemical vapor deposition (CVD) and twisting have been developed to meet different applications of GBFs in strain sensors, stretchable SC, and multifunctional actuators. [9,29,30] Together with the evolution in their preparation, mechanical and electrical properties of GBFs have been considerably enhanced since their debut. Bioinspired strengthening and toughening strategies for membranes have been found to work for GBFs as well, and atomic doping methods have efficiently increased electrical conductivity of GBFs to a record value of 2.2 × 10 7 S m −1 , [31] which is even comparable to that of certain metals such as nickel (1.5 × 10 7 S m −1 ) and aluminum (3.5 × 10 7 S m −1 ). Based on their novel structures and significantly enhanced mechanical/electrical properties, GBFs have found their substantial uses particularly in newly designed, high-performance electrochemical devices for energy conversion and storage.Several excellent reviews have witnessed the rapid development of GBFs. [17,20,23] For example, Chou and co-workers [18] previously gave a comprehensive review on the synthesis, device performance, and potential applications of GBFs. Another review presented by Gao and his colleagues [32] focused on the microscopic mechanism during liquid crystal formation and summarized its effects on producing continuous fibers. Additionally, applications of GBFs in flexible/ wearable SCs and bioinspired nanocomposites were specifically discussed by Huang et al. [25] and Cheng and co-workers, [33] respectively. In this featured article, we mainly focus on very recent research advances in GBFs over the past few years and introduce progresses in preparation techniques, strategies for performance enhancement and novel applications (Figure 1), aiming to provide a state-of-the-art update for GBFs as well as perspectives for their future development.Graphene-based fibers (GBFs) are macroscopic 1D assemblies formed by using microscopic 2D graphene sheets as building blocks. Their unique structure exhibits the same merits as graphene such as low weight, high specific surface area, excellent mechanical/electrical properties, and ease of functionalization. Furthermore, the fibrous nature of GBFs is intrinsically compatible with existing textile technologies, making them suitable for applications in flexible and wearable electronics. Recently, novel synthetic ...

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Section: Advance In Preparation Of Gbfsmentioning

confidence: 99%

Graphene‐Based Fibers: Recent Advances in Preparation and Application

Zhang

2019

Advanced Materials

110

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“…Apart from the 2D materials discussed above, many 2D conducting polymers are also applicable for MSC electrode applications, including PANI, PPy, and polydopamine (PDA) . Generally speaking, 2D polymers have a variety of merits for electrochemical applications, but face problems of limited electrical conductivity.…”

Section: Planar Mesdsmentioning

confidence: 99%

“…Apart from the 2D materials discussed above,m any 2D conductingp olymers are also applicable for MSC electrode applications,i ncluding PANI, [36] PPy, [84] and polydopamine (PDA). [23] Generally speaking, 2D polymers have av ariety of merits for electrochemical applications,but face problems of limited electrical conductivity.A ne ffective strategy is to combine them with the materials that have high electrical conductivity.W u et al reported the fabrication of ah ybrid film of thiophene (TP) nanosheets and EG for MSCs( TP/EG MSCs).…”

Section: Sandwich-like Stacked Mscsmentioning

confidence: 99%

“…The 2D materials reported for MB cathode materials include graphene-based composites, [16,30,31] intercalation compounds (e.g.,L iCoO 2 nanosheets), [32] 2D organic polymers (e.g.,p olypyrrole (PPy) nanosheets), [33] whereas the anode materials often contain graphene, transition-metal dichalcogenides (TMDs), [17] and MXene [12] ,t ogether with 2D transition-metal oxides( TMOs;e .g.,V 2 O 5 nanosheets) [34] .T ypical 2D materials used in MBs could also be applied in MSCs. [19,[35][36][37][38][39][40] A detaileds ummary of 2D materials adopted for MB and MSC researchi sp rovided in Tables 1a nd 2, respectively.W ith advances in microfabricationa nd packingt echnologies, it is believed that more and more high-performanceM Bs and MSCs based on 2D materials and with different configurations will be developed.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized Energy Storage Devices Based on Two‐Dimensional Materials

Jiang

Weng

2019

ChemSusChem

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A growing demand for miniaturized biomedical sensors, microscale self‐powered electronic systems, and many other portable, wearable, and integratable electronic devices is continually stimulating the rapid development of miniaturized energy storage devices (MESDs). Miniaturized batteries (MBs) and supercapacitors (MSCs) were considered to be suitable energy storage devices to power microelectronics uninterruptedly with reasonable energy and power densities. However, in addition to similar challenges encountered with electrode materials in conventional energy storage devices, their performances are also greatly affected by microfabrication technologies, as well as the challenges of how to realize stable and high‐performance MESDs in such a limited footprint area. Benefiting from the unique architectural engineering of two‐dimensional materials and the emergence of precise and controllable microfabrication techniques, the output electrochemical performances of MSCs and MBs are improving rapidly. This minireview summarizes recent advances in MSCs and MBs built from two‐dimensional materials, including electrode/device configuration designs, material synthesis, microfabrication processes, smart function incorporations, and system integrations. An introduction to configurations of the MESDs, from linear fibrous shapes, planar sandwich thin‐film or interdigital structures, to three‐dimensional configurations, is presented. The fundamental influences of the electrode material and configuration designs on the exhibited MB/MSC electrochemical performances are also highlighted.

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“…Other alternative strategies, regarding coating and impregnated reaction methods that could efficiently introduce electroactive materials in fibres enabled FFSCs to perform excellent energy storage ability. In this respect, the energy densities were promoted by electrochemically active materials (e.g., metal oxides/sulfides (Mno 2 , Co 3 O 4 , MoS 2 ) and conducting polymer (polyaniline, polypyrrole)) induced pseudo‐capacitances. Although those approaches have improved the energy densities of FFSCs, these levels are still relatively too low to meet the demands of practical application.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Micro‐Mesoporous Carbon‐Framework‐Based Hybrid Nanofibres for High‐Density Capacitive Energy Storage

Meng

Chen

2019

Angewandte Chemie

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Advanced methods, allowing the controllable synthesis of ordered structural nanomaterials with favourable charges transfer and storage, are highly important to achieve ideal supercapacitors with high energy density. Herein, we report a microliter droplet‐based method to synthesize hierarchical‐structured metal–organic framework/graphene/carbon nanotubes hybrids. The confined ultra‐small‐volume reaction, give well‐defined hybrids with a large specific‐surface‐area (1206 m2 g−1), abundant ionic‐channels (narrow pore of 0.86 nm), and nitrogen active‐sites (10.63 %), resulting in high pore‐size utilization (97.9 %) and redox‐activity (32.3 %). We also propose a scalable microfluidic‐blow‐spinning method to consecutively generate nanofibre‐based flexible supercapacitor electrodes with striking flexibility and mechanical strength. The supercapacitors display large volumetric energy density (147.5 mWh cm−3), high specific capacitance (472 F cm−3) and stably deformable energy‐supply.

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Construction of microfluidic-oriented polyaniline nanorod arrays/graphene composite fibers for application in wearable micro-supercapacitors

Abstract: We demonstrated a new strategy to construct high-performance micro-SCs based on microfluidic-oriented core–sheath structured polyaniline nanorod arrays/graphene fibers.

Cited by 96 publications

References 45 publications

Graphene‐Based Fibers: Recent Advances in Preparation and Application

Graphene‐Based Fibers: Recent Advances in Preparation and Application

Miniaturized Energy Storage Devices Based on Two‐Dimensional Materials

Hierarchical Micro‐Mesoporous Carbon‐Framework‐Based Hybrid Nanofibres for High‐Density Capacitive Energy Storage

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