Flexible wire-shaped lithium-sulfur batteries with fibrous cathodes assembled via capillary action

Liu, Ruiqing; Liu, Yuejiao; Chen, Jun; Kang, Qi; Wang, Linlin; Zhou, Weixin; Huang, Zhen-Dong; Lin, Xiujing; Li, Yang; Li, Pan; Feng, Xiang; Wu, Gang; Ma, Yanwen; Huang, Wei

doi:10.1016/j.nanoen.2016.12.049

Cited by 63 publications

(50 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With increasing demands for portable and wearable electronics, tremendous efforts have been made for the development of flexible energy storage devices, such as on‐chip microsupercapacitors, thin‐film batteries, and supercapacitors, as well as cable‐like supercapacitors and batteries . Among these flexible energy storage devices, flexible supercapacitors have been attracting attention because of their high power density and long cycle lives .…”

Section: Introductionmentioning

confidence: 99%

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Guo

Liu

Zhang

et al. 2018

Adv Funct Materials

View full text Add to dashboard Cite

Although Ti 3 C 2 MXene has shown great potential in energy storage field, poor conductivity and restacking between MXene flakes seriously hinders the maximization of its capacitance. Herein, a new strategy to solve the problems is developed. Gallery Al atoms in Ti 3 AlC 2 are partially removed by simple hydrothermal etching to get Ti 3 C 2 T x reserving appropriate Al interlayers (Ti 3 C 2 T x @Al). Ti 3 C 2 T x @Al keeps stable layered structure rather than isolated Ti 3 C 2 T x flakes, which avoids flake restacking. The removal of partial Al frees up space for easy electrolyte infiltration while the reserved Al as "electron bridges" ensures high interlayer conductivity. As a result, the areal capacitance reaches up to 1087 mF cm −2 at 1 mA cm −2 and over 95% capacitance is maintained after 6000 cycles. The all-solid-state supercapacitor (ASSS) based on Ti 3 C 2 T x @Al delivers a high capacitance of 242.3 mF cm −2 at 1 mV s −1 and exhibits stable performance at different bending states. Two ASSSs in tandem can light up a light-emitting diode under the planar or wrapping around an arm. The established strategy provides a new avenue to improve capacitance performances of MXenes.

show abstract

Section: Introductionmentioning

confidence: 99%

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Guo

Liu

Zhang

et al. 2018

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…To further demonstrate its wearability, five fiber‐shaped Li–S batteries were integrated into a cloth, resulting in an “energetic” fabric that could deliver a tandem voltage up to 11 V (Figure c). Liu et al also reported a fiber‐shaped Li–S battery, as shown in Figure d. rGO‐supported sulfur as the active material was self‐assembled onto metal yarns by capillary action to form composite cathodes, which showed mechanical robustness, good flexibility, and high electrochemical performance.…”

Section: Other Textile Battery Systemsmentioning

confidence: 99%

Section: Other Textile Battery Systemsmentioning

confidence: 99%

Advances in Flexible and Wearable Energy‐Storage Textiles

Liu

et al. 2018

Small Methods

131

View full text Add to dashboard Cite

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.

show abstract

“…Moreover, the cable‐shaped Li–S battery presented excellent flexibility, with the open‐circuit voltage remaining unchanged in different bending states (Figure a‐iii). Liu et al also synthesized a fiber sulfur cathode with good mechanical flexibility and robustness, which delivered a high initial capacity of 1255 mAh g −1 and a high areal energy density due to its superior electrical conductivity of 11.7 S cm −1 (Figure b). As a demonstration, a fiber‐shaped Li–S battery based on this composite cathode was prepared and used as a wristband to power an LED in the twisted state and bent at 90° under water.…”

Section: Summary Of Fiber‐shaped Batteriesmentioning

confidence: 99%

Section: Summary Of Fiber‐shaped Batteriesmentioning

confidence: 99%

An Overview of Fiber‐Shaped Batteries with a Focus on Multifunctionality, Scalability, and Technical Difficulties

et al. 2019

View full text Add to dashboard Cite

active materials, [13,14] have been made. However, 1D fiber-shaped batteries offer many intriguing features and promising advantages over the conventional bulky or planar structure batteries: 1) fiber-shaped batteries exhibit high compatibility with the current textile industry. Yarn is an essential element of current fabrics, and fiber-shaped batteries can be considered as functional yarn and woven/knitted into an energy textile. 2) The fabric woven/ knitted from fiber-shaped batteries can be air permeable, which solves the problem that most planar structure batteries possess a leather-like feature impermeable to air. 3) Fiber-shaped batteries can be used to fabricate various flexible power sources with unbeatable flexibility, compatibility, and miniaturization potential, providing diverse possibilities.However, the fiber shape adversely results in a few persistent disadvantages: 1) high internal resistance. The long and thin structure of fiber-shaped batteries results in a very high internal resistance, especially considering that a piece of energy storage fabric may be woven from hundreds of meters of fiber-shaped batteries. 2) Difficult fabrication. Short circuiting must be very carefully avoided during fabrication with the long and thin electrode adopted. 3) Difficult set up of the separator. Most of the current reports used a gel electrolyte as the separator. However, considering practical applications, a specific separator cannot be avoided. Setting up a separator film between two long and thin electrodes is much more difficult than setting up a separator film between two planar structured electrodes. 4) Difficult encapsulation. While most of the current reports did not encapsulate the fiber-shaped battery, encapsulating a long and thin device is clearly difficult. 5) Difficult minimization of the thickness. A battery is an electrochemical device with an electrolyte, a separator and two electrodes. With this complicated structure, the current fiber-shaped batteries are usually much thicker than normal yarns. 6) Unsatisfactory mechanical performance of fiber-shaped batteries for weaving with a machine. The tensile strength and surface friction of fiber-shaped batteries are very different from those of traditional yarns. 7) Difficult achievement of yarn texture. With or without encapsulation, fibershaped batteries possess the texture of plastic wire instead of soft and multistrand yarn. These major problems, together with other minor issues, will be further discussed in detail in Section 7.Flexible and wearable energy storage devices are receiving increasing attention with the ever-growing market of wearable electronics. Fiber-shaped batteries display a unique 1D architecture with the merits of superior flexibility, miniaturization potential, adaptability to deformation, and compatibility with the traditional textile industry, which are especially advantageous for wearable applications. In the recent research frontier in the field of fiber-shaped batteries, in addition to higher performance, advances in mult...

show abstract

Flexible wire-shaped lithium-sulfur batteries with fibrous cathodes assembled via capillary action

Cited by 63 publications

References 42 publications

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Advances in Flexible and Wearable Energy‐Storage Textiles

An Overview of Fiber‐Shaped Batteries with a Focus on Multifunctionality, Scalability, and Technical Difficulties

Contact Info

Product

Resources

About

Flexible wire-shaped lithium-sulfur batteries with fibrous cathodes assembled via capillary action

Cited by 63 publications

References 42 publications

Flexible Ti3C2Tx@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Flexible Ti3C2Tx@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Advances in Flexible and Wearable Energy‐Storage Textiles

An Overview of Fiber‐Shaped Batteries with a Focus on Multifunctionality, Scalability, and Technical Difficulties

Contact Info

Product

Resources

About

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing

Flexible Ti₃C₂T_x@Al electrodes with Ultrahigh Areal Capacitance: In Situ Regulation of Interlayer Conductivity and Spacing