Stretchable, Wearable Dye‐Sensitized Solar Cells

Yang, Zhibin; Deng, Jue; Sun, Xuemei; Li, Houpu; Peng, Huisheng

doi:10.1002/adma.201400152

Cited by 236 publications

(209 citation statements)

References 25 publications

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“…After coating a layer of gel electrolyte comprising PVA and H 2 SO 4 , two composite yarns were twisted together and even co-woven with a conventional cotton yarn to form an electronic fabric. [48] Peng et al applied this fiber-shape design concept to various energy storage devices, including LIBs, [137,138] SCs, [138,139] lithium-air batteries (Figure 13a), [140] lithium-sulfur batteries, [141] aluminaair batteries, [142] and smart energy harvest devices, [143] as well as to integrated photoelectric conversion and energy storage wires. [144] Two parallel-aligned MWCNTs/ LiMn 2 O 4 cathode and MWCNTs/Li 4 Ti 5 O 12 anode were assembled into a wire-shaped LIB, [145] and the capacity declines by only around 3% after bending for 1000 cycles.…”

Section: Architectural Design Of Flexible Energy Storage Devicesmentioning

confidence: 99%

Mechanical Analyses and Structural Design Requirements for Flexible Energy Storage Devices

Mao

Meng

Ahmad

et al. 2017

Advanced Energy Materials

180

146

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degree of the entire electronic systems. In the integrated flexible electronic system, energy storage devices [14,[16][17][18][19][20] play important roles in connecting the preceding energy harvesting devices and the following energy utilization devices (Figure 1). Rechargeable secondary batteries and supercapacitors (SCs) are two typical energy storage devices. [21] Several excellent review papers [21][22][23][24][25][26] reported significant progresses achieved in flexible lithium-ion batteries (LIBs) and SCs by taking advantage of novel electrode materials, current collectors, and solid-state electrolytes. The application areas and lifetime of flexible power sources strongly depend on their mechanical deformation tolerance and the electrical property retention under deformation. Qualified flexible power sources should be able to endure high strain induced by external mechanical deformation, such as bending, compressing, stretching, folding, and twisting, while maintaining their electrochemical performance stability and structural integrity. Therefore, the mechanical reliability assessment and electrical property analysis of flexible devices need to be given much attention for future application.Tolerance in bending into a certain curvature is the major mechanical deformation characteristic of flexible energy storage devices. Thus far, several bending characterization parameters and various mechanical methods have been proposed to evaluate the quality and failure modes of the said devices by investigating their bending deformation status and received strain. Some of these mechanical metrologies were derived from the early research on flexible semiconductor devices of micro-electromechanical system (MEMS) [27,28] and TFTs. [29] However, comparing those numerous measurement data with one another is difficult because of the various theories and methods adopted by different research groups and the lack of unified assessment criteria. [26] The flexibility of flexible devices is generally realized not only by use of intuitive soft electrode materials but also by optimizing their mechanical structural design. [25] Detailed analysis on bending mechanics combining experimental and theoretical results provide not only reliable test methods to describe the bending state but also guidance for configuration design of devices against mechanical failure.The current review emphasizes on three main points: (1) key parameters that characterize the bending level of flexible energy storage devices, such as bending radius, bending Flexible energy storage devices with excellent mechanical deformation performance are highly required to improve the integration degree of flexible electronics. Unlike those of traditional power sources, the mechanical reliability of flexible energy storage devices, including electrical performance retention and deformation endurance, has received much attention. To provide the guideline for the construction design of devices, the strain distribution and failure modes in the entire architecture should b...

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Section: Architectural Design Of Flexible Energy Storage Devicesmentioning

confidence: 99%

Mechanical Analyses and Structural Design Requirements for Flexible Energy Storage Devices

Mao

Meng

Ahmad

et al. 2017

Advanced Energy Materials

180

146

View full text Add to dashboard Cite

show abstract

“…Buckling or fracture structured metallic films or conducting polymers are used on elastic substrates as the electrodes to achieve ultimate stretchability 50, 51, 52, 53, 54, 55, 56. Yang et al57 developed a unique method to develop elastic electrically conducting fibers for their stretchable, wearable photovoltaic devices which maintained a PCE as high as 7.13% under stretching. They used aligned MWNT sheets wound on rubber fibers for the electrodes that gave highly stable and invariable electronic properties under stretching actions.…”

Section: Fiber‐shaped Energy Harvesting Devicesmentioning

confidence: 99%

Fiber‐Type Solar Cells, Nanogenerators, Batteries, and Supercapacitors for Wearable Applications

et al. 2018

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Wearable electronic devices represent a paradigm change in consumer electronics, on‐body sensing, artificial skins, and wearable communication and entertainment. Because all these electronic devices require energy to operate, wearable energy systems are an integral part of wearable devices. Essentially, the electrodes and other components present in these energy devices should be mechanically strong, flexible, lightweight, and comfortable to the user. Presented here is a critical review of those materials and devices developed for energy conversion and storage applications with an objective to be used in wearable devices. The focus is mainly on the advances made in the field of solar cells, triboelectric generators, Li‐ion batteries, and supercapacitors for wearable device development. As these devices need to be attached/integrated with the fabric, the discussion is limited to devices made in the form of ribbons, filaments, and fibers. Some of the important challenges and future directions to be pursued are also highlighted.

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“…The device was completed by filling the cavity of the tube with a liquid redox electrolyte and sealing the device. [109] A single cell of the wire-like solar harvester exhibited power conversion efficiency of 7.13% in its natural state. The J-V curves of a solar cell wire cell before and after stretching by 30% for 20 cycles was presented in Figure 14e, where J SC only decreased slightly by 3%, possibly due to the peeling off of a few of TiO 2 nanotubes.…”

Section: Stretchable Wire-shaped Photovoltaic Devicesmentioning

confidence: 99%

Toward Soft Skin‐Like Wearable and Implantable Energy Devices

Gong

Cheng

2017

Advanced Energy Materials

184

130

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The development of ultra‐compliant power sources is crucial for their seamless integration with next‐generation skin‐like wearable and implantable biomedical systems for long‐term health monitoring. Toward this goal, stretchable energy storage and conversion devices (ESCDs), including supercapacitors, lithium‐ion batteries (LIBs), solar cells, and generators are now attracting intensive worldwide research efforts. The purpose of this review is to discuss the latest achievements in the development of such stretchable energy devices in the context of biomedical applications. We first review the viable strategies and methodologies of fabricating stretchable energy storage and conversion devices. Then, we focus on description of various types of soft energy devices from a materials point of view. Furthermore, we discuss the challenges and opportunities in the design of truly conformal soft energy systems, including various key parameters, such as energy density, stability, and scalability.

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Stretchable, Wearable Dye‐Sensitized Solar Cells

Cited by 236 publications

References 25 publications

Mechanical Analyses and Structural Design Requirements for Flexible Energy Storage Devices

Mechanical Analyses and Structural Design Requirements for Flexible Energy Storage Devices

Fiber‐Type Solar Cells, Nanogenerators, Batteries, and Supercapacitors for Wearable Applications

Toward Soft Skin‐Like Wearable and Implantable Energy Devices

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