A flexible zinc-air battery using fiber absorbed electrolyte

Zhang, Pengfei; Wang, Keliang; Zuo, Yayu; Wei, Manhui; Pei, Pucheng; Liu, Jian; Wang, Hengwei; Chen, Zhuo; Shang, Nuo

doi:10.1016/j.jpowsour.2022.231342

Cited by 20 publications

(12 citation statements)

References 33 publications

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“…Cable/fiber-type energy storage devices exhibit omnidirectional flexibility and can be knitted or stitched into existing textiles/ fabrics to create wearable "energetic textiles," which makes them truly attractive in wearable electronic devices. [32,49,88] A wearable cable-type metal-air battery was assembled by wrapping an electrolyte membrane on a metal electrode, followed by winding a flexible air cathode on the outermost layer, as shown in Figure 5a. With great flexibility of being folded or bent, the two wearable aqueous cable-type Zn-air batteries connected in series could have an open voltage of 2.9 V, which is high enough to power an electronic watch and properly charge a smartphone even at twine and knit states (Figure 5b).…”

Section: Cable/fiber-typementioning

confidence: 99%

“…Reproduced with permission. [ 88 ] Copyright 2022, Elsevier. c) Preparation procedures of a fiber‐type Al‐air battery, and d) photographs of a LED watch powered by two connected wearable aqueous fiber‐type Al‐air batteries woven into a fabric.…”

Section: Structure Configuration Of Wearable Aqueous Metal‐air Batteriesmentioning

confidence: 99%

“…b) Photographs of two connected wearable aqueous cable-type Zn-air batteries powering an electronic watch and a smartphone at different deformations (normal/folded/bent states; twine and knit states), respectively. Reproduced with permission [88]. Copyright 2022, Elsevier.…”

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confidence: 99%

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Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Chen

Fang

2023

Adv Materials Technologies

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The advent of the information age has promoted the development of smart wearable electronics for acquiring real-time data, such as smart bracelets, real-time health monitors, electronic skins, and smart clothes, [1][2][3][4][5][6][7][8][9] which has in turn promoted the development of power supply systems with high operational safety, long cycle life, high energy, and excellent deformability. Among recently developed flexible power supplies, [10][11][12][13][14] flexible lithium-ion (Li-ion) batteries have been dominantly employed in wearable electronics because of competitive chargedischarge efficiency (≈90%), high energy density (≈400 W h kg −1 ), durable cycling life (≈5000 cycles) and mature Li-ion battery infrastructure. [15] Moreover, wearable fiber Li-ion batteries can be woven into textiles, offering a convenient way to power wearable electronics. [16][17][18] Nonetheless, the safety and environmental risks caused by the usage of flammable/ toxic organic electrolytes restrict the further advance of Li-ion batteries and make them unsatisfied to be integrated with wearable electronic devices in proximity to the human body. [15,19] Further efforts are highly demanded to explore alternative power systems with promising energy density, reliable discharge-charge characteristics, long operation life, and good safety.In recent years, metal-air batteries have received widespread attention because of their remarkable theoretical energy density, environmental-friendliness, low fuel cost, and superior safety. [20][21][22][23] In particular, their unique half-open systems can continuously utilize the oxygen from ambient air instead of storing gaseous oxygen in closed systems, thus the required mass and volume of the air electrode can be largely minimized, resulting in high theoretical energy densities. [24] Compared to the theoretical energy density of Li-ion batteries with a closed system (460 Wh kg −1 ), lithium-air (Li-air) batteries exhibit much higher theoretical energy density (≈3500 W h kg −1 , based on the discharge product of Li 2 O 2 ). [25,26] Flexible wearable metal-air batteries, combining the flexible deformation feature and the high theoretical energy density, have become attractive energy supply systems for wearable electronic devices. Since 2015, wearable metal-air batteries (i.e., zinc-air (Zn-air), Li-air, aluminum-air (Al-air), sodium-air (Na-air), potassium-air (K-air), With the increasing popularity of personal wearable electronic devices used for healthcare, entertainment, and sports applications, the corresponding energy supply and space adaptability of devices are required to meet higher standards. Owing to large energy densities and intrinsic safety, wearable aqueous metal-air batteries have shown great potential to be energy storage/ conversion integrated systems for wearable electronic devices characterized by long-term low-power operation. In contrast to non-aqueous electrolytes, aqueous-based electrolytes exhibit greater ionic conductivity, higher operational safety, lower cost, and super...

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Section: Cable/fiber-typementioning

confidence: 99%

Section: Structure Configuration Of Wearable Aqueous Metal‐air Batteriesmentioning

confidence: 99%

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Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Chen

Fang

2023

Adv Materials Technologies

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“…With the increasing prosperity of wearable energy consumption equipment, the design and manufacture of soft batteries with considerable performance have become an important research direction of energy supply. − As a new kind of green battery system, metal–air batteries are widely favored by more and more researchers and scholars. − Zinc–air batteries are increasingly favored in the field of emerging batteries because of the high specific energy (1086 W h kg –1 ) and safety. − The intrinsic structure and characteristics of the gel matrix make it an ideal electrolyte material for flexible batteries. − Considering the instability and uncontrollable factors of the batteries in the actual working environment, the gel electrolyte must have good physicochemical characteristics and variable environmental adaptability. , Nevertheless, due to the brittleness and fragility of conventional gel polymers, the assembled flexible energy storage equipment exhibits poor mechanical properties, and the performance attenuation is serious in the deformation state, so it is not suitable for direct application in zinc–air batteries. , Although there are many studies on the performance optimization of gel electrolytes in recent years, there are still serious challenges in integrating resilient gels into high-performance flexible energy storage electronic devices. , …”

Section: Introductionmentioning

confidence: 99%

“…15,16 Nevertheless, due to the brittleness and fragility of conventional gel polymers, the assembled flexible energy storage equipment exhibits poor mechanical properties, and the performance attenuation is serious in the deformation state, so it is not suitable for direct application in zinc−air batteries. 17,18 Although there are many studies on the performance optimization of gel electrolytes in recent years, there are still serious challenges in integrating resilient gels into high-performance flexible energy storage electronic devices. 19,20 In addition, the environmental adaptability of traditional gel electrolytes is generally weak.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Copolymer Gel Modified by Dual Surfactants for Flexible Zinc–Air Batteries

Zhang

Wang

Zuo

et al. 2022

ACS Appl. Mater. Interfaces

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Zinc–air batteries using gels as carriers for electrolyte absorption have attracted extensive attention due to their flexibility, deformability, and high specific capacity. However, traditional mono-polymer gel electrolytes display poor mechanical properties and low ionic conductivity at wide-window temperatures. Here, the enhanced gel polymer (PAM-F/G) modified by dual surfactants is present by way of pluronic F127 and layered graphene oxide introduced into the polyacrylamide (PAM) matrix. The gel electrolyte procured by absorbing 6 M KOH exhibits improved mechanical characteristics, temperature adaptability, and a satisfactory ionic conductivity (276 mS cm–1). The results demonstrate that a flexible zinc–air battery assembled by PAM-F/G electrolyte outputs a high power density (155 mW cm–2) and can even operate reliably (>40 h) at −20 °C. These findings are available for promoting the research and popularization of flexible zinc–air batteries with high performance.

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Quasi‐Liquid Gel Electrolyte for Enhanced Flexible Zn–Air Batteries

Shang

Wang

Wei

et al. 2023

Adv Funct Materials

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Flexible Zn–air batteries (FZABs) have attracted more attention due to their high specific energy, excellent stability, and unique rechargeability. However, these batteries are limited by the low conductivity of the gel electrolytes used. Here a quasi‐liquid gel with ionic conductivity comparable to liquid electrolytes is presented. The gel pore structure is guided and modified in situ with large‐size silica to achieve clear and unbroken pores. The reduced skeleton structure leads to a significant increase in ionic conductivity to 562.6 mS cm−1, enabling a peak power density of 154 mW cm−2 and a cycle life of over 40 h with a low charge–discharge gap. The FZABs also exhibit a high lifetime and potential advantages in 10 mA cm−2 charge/discharge testing, and demonstrate excellent performance in practical applications. This study offers new possibilities for developing high‐performance quasi‐liquid gels and innovative concepts for FZABs.

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A flexible zinc-air battery using fiber absorbed electrolyte

Cited by 20 publications

References 33 publications

Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Enhanced Copolymer Gel Modified by Dual Surfactants for Flexible Zinc–Air Batteries

Quasi‐Liquid Gel Electrolyte for Enhanced Flexible Zn–Air Batteries

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