Biaxially stretchable supercapacitors based on the buckled hybrid fiber electrode array

Zhang, Nan; Zhou, Weiya; Zhang, Qiang; Luan, Pingshan; Cai, Le; Yang, Feng; Zhang, Xiao; Fan, Qingxia; Zhou, Wenbin; Xiao, Zhuojian; Gu, Xi; Hui-liang, Chen; Li, Kewei; Xiao, Shiqi; Wang, Yanchun; Liu, Huaping; Xie, Sishen

doi:10.1039/c5nr03027g

Cited by 53 publications

(34 citation statements)

References 45 publications

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“…[107,185] As illustrated in Figure 8d, a highly stretchable fiber supercapacitor with double-helical twisting structure was woven into a glove, showing little change in capacitance at finger movements. [187] For the integration on other wearables, a stretchable microsupercapacitor mounted on wrist strap has also been reported, [188] as shown in Figure 8e. Similarly, a biaxially stretchable supercapacitor based on buckled hybrid fiber arrays has been attached to gloves.…”

Section: Nontouching Wearablesmentioning

confidence: 99%

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

Chen

Villa

Zhuang

et al. 2019

Advanced Energy Materials

104

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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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Section: Nontouching Wearablesmentioning

confidence: 99%

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

Chen

Villa

Zhuang

et al. 2019

Advanced Energy Materials

104

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“…The silicon microcells are aligned along the IBC orthogonally to the applied tensile stress to enable the stretching of the structure while minimizing the strain in the silicon areas. 2019, 9,1902883 by ≈33%. Figure 1b,c shows the prestretched and stretched wafer-scale solar cell when an asymmetrical tensile stress is applied near its center orthogonally to the IBC.…”

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confidence: 97%

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Corrugation Enabled Asymmetrically Ultrastretchable (95%) Monocrystalline Silicon Solar Cells with High Efficiency (19%)

El‐Atab

Qaiser

Bahabry

et al. 2019

Advanced Energy Materials

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skin, [3,4] stretchable displays, [5,6] and so on. In particular, mechanically deformable energy-harvesting [7,8] and energystorage [9][10][11] devices are crucial for achieving efficacy and portability. Unlike flexibility which can be achieved by thinning down the material such that the generated strain is below its fracture limit, stretchability may involve out-of-plane deformation and reversible change of material size and thus should be tackled differently. [12] The early demonstrations of stretchable energy devices such as batteries [13] and supercapacitors [14] are based on the dispersion of electronic components in inherently elastic materials such as elastomers. Bao and co-workers reported the first intrinsically stretchable solar cell using organic materials which can accommodate reversible strains up to 27% with a power conversion efficiency of ≈2%. [15] The development of different organic-based elastic photovoltaics followed; however, the major drawbacks lie in their environmental instability and low efficacy (below 8%). [16][17][18] In contrast, semiconductor based solar cells show higher efficiencies; however, they are inherently rigid and brittle. To overcome these constraints, various forms of shape engineering were developed such as serpentine, wavy, and stiff-island structures [19][20][21] which can achieve stretching due to different mechanisms such as out-of-plane deformation, buckling, and twisting. [22] The first inorganic semiconductor-based stretchable solar cell was reported by Rogers and co-workers where single junction GaAs microcells (3.6-µm-thick) were transferred onto a prestrained elastomer with downward buckled interconnects resulting in an efficiency of ≈13% with strains up to 20%. [23] In a follow-up work, the authors used ultrathin and geometrically structured dual junction GaInP-GaAs microcells to achieve 60% stretchability and 19% efficiency at the expense of a 33% loss of active area. [24] However, all of the demonstrated inorganic semiconductor based stretchable photovoltaics necessitate an aligned transfer printing of the ultrathin and patterned inorganic material from a crystalline wafer onto a prestrained elastic substrate with good adhesion and low alignment mismatch. [25] Previously, we demonstrated a deep reactive ion etching (DRIE) based linear-corrugation technique to convert rigid solar cells Stretchable solar cells are of growing interest due their key role in realizing many applications such as wearables and biomedical devices. Ultrastretchability, high energy-efficiency, biocompatibility, and mechanical resilience are essential characteristics of such energy harvesting devices. Here, the development of wafer-scale monocrystalline silicon solar cells with world-record ultrastretchability (95%) and efficiency (19%) is demonstrated using a laser-patterning based corrugation technique. The demonstrated approach transforms interdigitated back contacts (IBC) based rigid solar cells into mechanically reliable but ultrastretchable cells with negligible degradation in the...

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“…However, fiber-based SCs with stretchability along all directions in the plane, like biaxial, have not been reported. Based on porous SWCNT/PEDOT hybrid fiber, Zhang et al [119] designed and fabricated a biaxially SSC, which possesses a unique porous structure both outwardly and inwardly (Fig. 9c).…”

Section: Cnt-based Stretchable Supercapacitorsmentioning

confidence: 99%

Recent advances and challenges of stretchable supercapacitors based on carbon materials

Zhang

Lin

et al. 2016

Sci. China Mater.

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Stretchable energy storage devices are essential for the development of stretchable electronics that can maintain their electronic performance while sustain large mechanical strain. In this context, stretchable supercapacitors (SSCs) are regarded as one of the most promising power supply in stretchable electronic devices due to their high power densities, fast charge-discharge capability, and modest energy densities. Carbon materials, including carbon nanotubes, graphene, and mesoporous carbon, hold promise as electrode materials for SSCs for their large surface area, excellent electrical, mechanical, and electrochemical properties. Much effort has been devoted to developing stretchable, carbon-based SSCs with different structure/performance characteristics, including conventional planar/textile, wearable fiber-shaped, transparent, and solid-state devices with aesthetic appeal. This review summarizes recent advances towards the development of carbon-based SSCs. Challenges and important directions in this emerging field are also discussed.

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Biaxially stretchable supercapacitors based on the buckled hybrid fiber electrode array

Cited by 53 publications

References 45 publications

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

Stretchable Supercapacitors as Emergent Energy Storage Units for Health Monitoring Bioelectronics

Corrugation Enabled Asymmetrically Ultrastretchable (95%) Monocrystalline Silicon Solar Cells with High Efficiency (19%)

Recent advances and challenges of stretchable supercapacitors based on carbon materials

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