Elastic Cu@PPy sponge for hybrid device with energy conversion and storage

Li, Zhe; Hu, Kuan; Yang, Mengyan; Zou, Yang; Yang, Jinbin; Yu, Min; Wang, Huaying; Qu, Xuecheng; Tan, Puchuan; Wang, Chan; Zhou, Xuechang; Zhou, Li

doi:10.1016/j.nanoen.2018.11.093

Cited by 52 publications

(36 citation statements)

References 48 publications

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“…It can be observed from the FTIR spectra that the characteristic peaks at 670, 887, 1019, 1497, and 1560 cm −1 are ascribed to NiCo 2 S 4 @PPy compound. The absorption band at 1560 and 1497 cm −1 are, respectively, caused by symmetric (CC) and antisymmetric (CN) vibration of pyrrole ring . What is more, the band at 1019 and 887 cm −1 should be assigned to the CH in‐plane vibration and CH in‐plane deformation vibration of PPy chain, respectively .…”

Section: Resultsmentioning

confidence: 94%

Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Qiu

et al. 2020

Energy Tech

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A NiCo2S4@PPy series with sheet stacking structure and suitable pore size distribution is successfully synthesized through a one‐step vulcanization process and polymerization process. Interestingly, the abundant sites and large electroactive surface area of NiCo2S4@PPy stacking structure are formed via the “etching effect” of S2− ions and ultrasonic oscillation effect, which render the morphology of NiCo2S4@PPy with a lamellar feature. In contrast, polypyrrole (PPy) with good conductivity provides favorable electron transport pathways for electrolyte ions. The as‐prepared sheet stacking structure NiCo2S4@PPy (NCSP‐3) electrode delivers good electrochemical properties with the highest specific capacitance of 1606.6 F g−1 at 1 A g−1 and excellent rate performance of 77.4% at high discharge rate of 10 A g−1. Furthermore, the NCSP‐3 electrode exhibits remarkable cycling stability, where the ultimate specific capacitance has no attenuation (retained at around 100%) compared with its incipient value after 20 000 cycles even at 20 A g−1. These promising results can be put down to the unique structure and synergetic effect of NiCo2S4 and PPy, which ensure good conductivity, more redox reactions, as well as large specific surface area. This work has guiding significance for the general and low‐cost route design of high‐performance electrode materials for supercapacitor applications.

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Section: Resultsmentioning

confidence: 94%

Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Qiu

et al. 2020

Energy Tech

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“…An elastic single‐electrode TENG made of sponges was also demonstrated in 2018 . In this work, Cu sponge was obtained by depositing a thin layer of Cu on a PDMS sponge via PAMD, followed by electrochemical deposition of polypyrrole (PPy) to form the Cu@PPy sponge.…”

Section: Applications Of Pamd For Flexible and Wearable Electronic Dementioning

confidence: 99%

Polymer‐Assisted Metal Deposition (PAMD) for Flexible and Wearable Electronics: Principle, Materials, Printing, and Devices

2019

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such as conducting polymers and carbon nanotubes, metal-the most conventional conductor-still outperforms significantly in terms of the electrical conductivity, device compatibility, materials stability, and cost-effectiveness. [1,[30][31][32][33][34][35][36][37][38] In particular, with the recent understanding of the nanomechanics of the metal and the soft structural design, metal conductors are indispensable for most of the flexible and wearable applications.In the literature, the fabrication of metal conductors typically consists of vacuum deposition of the metal and subsequent patterning with photolithography. Although this fabrication strategy can be directly applied on flexible polymeric substrates, it is often too costly for most flexible applications and may encounter materials instability issues of the flexible substrates at high vacuum or strong solvent. In addition, vacuum technology is not suitable for coating substrates with 3D structures such as foams, fibers, and arbitrary surfaces. This has led to extensive research on developing solution-based metal deposition and printing methods in the past three decades. The most reported solution-based strategy is the so-called "metal ink" method, in which solution-dispersed nanostructured metal particles (including nanoparticles (NPs), nanowires, nanotubes, and nanoplates) or metal precursors are cast or printed onto the flexible substrates and then thermally sintered or chemically reduced to yield the metallic conductors. [39][40][41][42][43] Nevertheless, they are still not widely used because of the following reasons. 1) The metal conductor fabricated through the "metal ink" method shows much lower electrical conductivity compared to their bulk, due to the additives of the ink (such as surfactants, binders, and stabilizers) and the large contact resistance between the NPs. [44,45] 2) The "metal ink" method works very well with noble metals such as Au and Ag, but is not compatible with more frequently used, yet less stable metals such as Cu and Ni. Even though there has been a major shift of research focus from Ag to Cu in recent years, inks for making high-quality Cu or Ni conductors at low-temperature and in the air atmosphere are yet to be developed. 3) The metal conductors made by the "metal ink" method are more suitable for interconnects but are less suitable for electrode applications due to the high roughness and impurity of the metal film. 4) Penetration of the "metal ink" into highly porous substrates or structures with small gaps is The rapid development of flexible and wearable electronics favors low-cost, solution-processing, and high-throughput techniques for fabricating metal contacts, interconnects, and electrodes on flexible substrates of different natures. Conventional top-down printing strategies with metal-nanoparticleformulated inks based on the thermal sintering mechanism often suffer from overheating, rough film surface, low adhesion, and poor metal quality, which are not desirable for most flexible electronic applications. In recent ...

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“…Typically, the desirable architecture can be rationally designed into several deformable segments based on planar supercapacitors, enabling various types of electrical connections residing in one patch. [17,170,171] Two main approaches are self-assembly and template method. [160] The as-fabricated compliant structure could easily sustain more than 282.5% elongation with very small strain (<3%) in active electrodes.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…3D sponge structures, commonly using CNT and graphene as electrodes, have been extensively reported, owing to their interconnected structure and high surface area. Several recent reviews have summarized the fabrication methods for 3D sponges of carbon materials . Two main approaches are self‐assembly and template method .…”

Section: Basics Of Stretchable Supercapacitorsmentioning

confidence: 99%

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

Chen

Villa

Zhuang

et al. 2019

Advanced Energy Materials

103

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Emerging health monitoring bioelectronics require energy storage units with improved stretchability, biocompatibility, and self‐charging capability. Stretchable supercapacitors hold great potential for such systems due to their superior specific capacitances, power densities, and tissue‐conforming properties, as compared to both batteries and conventional capacitors. Despite the rapid progress that has been made in supercapacitor research, practical applications in health monitoring bioelectronics have yet to be achieved, requiring innovations in materials, device configurations, and fabrications tailored for such applications. In this review, the progress in stretchable supercapacitor‐powered health monitoring bioelectronics is summarized and the required specifications of supercapacitors for different types of application settings with varying demands on biocompatibility are discussed, including nontouching wearables, skin‐touching wearables, skin‐conforming wearables, and implantables. The perspective of this review is then broadened to focus on integration of stretchable supercapacitors in bioelectronics and aspects of energy harvesting and sensing. Finally further insights on the existing challenges in this developing field and potential solutions are provided.

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Elastic Cu@PPy sponge for hybrid device with energy conversion and storage

Cited by 52 publications

References 48 publications

Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Polymer‐Assisted Metal Deposition (PAMD) for Flexible and Wearable Electronics: Principle, Materials, Printing, and Devices

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

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Elastic Cu@PPy sponge for hybrid device with energy conversion and storage

Cited by 52 publications

References 48 publications

Facile Synthesis of Sheet Stacking Structure NiCo2S4@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Facile Synthesis of Sheet Stacking Structure NiCo2S4@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Polymer‐Assisted Metal Deposition (PAMD) for Flexible and Wearable Electronics: Principle, Materials, Printing, and Devices

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

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Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors

Facile Synthesis of Sheet Stacking Structure NiCo₂S₄@PPy with Enhanced Rate Capability and Cycling Performance for Aqueous Supercapacitors