Weavable high-capacity electrodes

Sun, Chuan‐Fu; Zhu, Hongli; Baker, Edward B.; Okada, Morihiro; Wan, Jiayu; Ghemes, Adrian; Inoue, Yasuo; Hu, Liangbing; Wang, YuHuang

doi:10.1016/j.nanoen.2013.03.020

Cited by 40 publications

(37 citation statements)

References 28 publications

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“…Besides, CNT@a-Si yarn has also been designed (Fig. 5b) to serve as a fiber electrode [81]. The fiber cell demonstrated high first charge and discharge capacities of 2440 and 2200 mAh/g with coulombic efficiency of 90% at a rate of C/5 in the potential range of 0.1-1.0 V versus Li + /Li (Fig.…”

Section: Flexible Fiber Libsmentioning

confidence: 99%

Flexible fiber energy storage and integrated devices: recent progress and perspectives

2015

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Flexible fiber-shaped energy storage devices have been studied and developed intensively over the past few years to meet the demands of modern electronics in terms of flexibility, weavability and being lightweight. In this review, fiber electrodes and flexible fiber energy storage devices containing solidstate supercapacitors (SCs) and lithium-ion batteries (LIBs) are carefully summarized with particular emphasis on their electrode fabrication, structure design and flexibility. In addition, emerging wireshaped integrated energy systems, combined energy storage and solar cells, as well as other electronic devices to realize self-charging and self-powered integrated systems are specifically highlighted.

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Section: Flexible Fiber Libsmentioning

confidence: 99%

Flexible fiber energy storage and integrated devices: recent progress and perspectives

2015

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“…The reasons for doing so is to try and mimic its use for real world applications where costly and bulky current collectors need to be avoided so as to reduce size and increase fl exibility. Potential multi-functional devices that can utilise yarns include thermoacosutic loudspeakers, [ 9 ] weavable electrodes for fl exible current collectors, [ 10 ] electrical shielding, [ 11 ] and supercapacitors. [ 12 ] The advantage of our material is that there is a strong electrochemical response for the free standing CNT/graphene yarn as can be seen by Figure 3 .…”

Section: Electrochemical Properties Of Cnt/graphene Yarnmentioning

confidence: 99%

Highly Conductive Carbon Nanotube‐Graphene Hybrid Yarn

Foroughi

Spinks

Antiohos

et al. 2014

Adv Funct Materials

115

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An effi cient procedure for the fabrication of highly conductive carbon nanotube/ graphene hybrid yarns has been developed. To start, arrays of vertically aligned multi-walled carbon nanotubes (MWNT) are converted into indefi nitely long MWNT sheets by drawing. Graphene fl akes are then deposited onto the MWNT sheets by electrospinning to form a composite structure that is transformed into yarn fi laments by twisting. The process is scalable for yarn fabrication on an industrial scale. Prepared materials are characterized by electron microscopy, electrical, mechanical, and electrochemical measurements. It is found that the electrical conductivity of the composite MWNT-graphene yarns is over 900 S/cm. This value is 400% and 1250% higher than electrical conductivity of pristine MWNT yarns or graphene paper, respectively. The increase in conductivity is asssociated with the increase of the density of states near the Fermi level by a factor of 100 and a decrease in the hopping distance by an order of magnitude induced by grapene fl akes. It is found also that the MWNT-graphene yarn has a strong electrochemical response with specifi c capacitance in excess of 111 Fg −1 . This value is 425% higher than the capacitance of pristine MWNT yarn. Such substantial improvements of key properties of the hybrid material can be associated with the synergy of MWNT and graphene layers in the yarn structure. Prepared hybrid yarns can benefi t such applications as high-performance supercapacitors, batteries, high current capable cables, and artifi cial muscles.

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“…To date, most reported fiber/yarn‐shaped electrodes/LIBs for woven or knitted textiles are based on CNT fibers/yarns, because of their unique features including their high strength, high conductivity, good flexibility, and that they are small in diameter. Sun et al reported weavable high‐capacity electrodes for LIBs, as shown in Figure a. In their research, vertically aligned CNT arrays were grown by CVD and α‐Si was subsequently grown on the obtained CNT fibers.…”

Section: Textile Libsmentioning

confidence: 99%

Advances in Flexible and Wearable Energy‐Storage Textiles

Liu

et al. 2018

Small Methods

131

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Considerable attention has been drawn to flexible and wearable energy‐storage devices due to the blooming of portable and wearable electronics in recent years. However, huge challenges are yet to be addressed before the need of both high flexibility and high performance can be met. With many desired features for wearable applications, textiles have become a growing research frontier where scientific views from various fields collide, sparking new ideas. Here, recent research progress in energy‐storage textiles (ESTs), in which textiles are employed to enhance either electrochemical performance or flexibility and wearability, is summarized. The research of ESTs is mainly divided into three parts, with a focus on supercapacitors, lithium‐ion batteries (LIBs), and some other representative battery systems, respectively. Electrode preparation, cell assembly, device performance, and the remaining challenges are discussed in detail, aiming to provide insights for future development.

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Weavable high-capacity electrodes

Cited by 40 publications

References 28 publications

Flexible fiber energy storage and integrated devices: recent progress and perspectives

Flexible fiber energy storage and integrated devices: recent progress and perspectives

Highly Conductive Carbon Nanotube‐Graphene Hybrid Yarn

Advances in Flexible and Wearable Energy‐Storage Textiles

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