An intrinsically 400% stretchable and 50% compressible NiCo//Zn battery

Liu, Jie; Hu, Mengmeng; Wang, Jiaqi; Nie, Ningyuan; Wang, Yueyang; Wang, Yukun; Zhang, Jiaheng; Huang, Yan

doi:10.1016/j.nanoen.2019.01.028

Cited by 97 publications

(83 citation statements)

References 38 publications

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“…With our polyHIPEs we achieve a MacMullin number of less than 2, unmatched by any other stretchable separator technology. [ 8–10,40–48 ] Introducing potassium hydroxide (KOH) as electrolyte boosts the separator conductivity to record high 0.39 ± 0.05 S cm −1 while keeping the MacMullin number below 2, corroborating the performance increase achievable with polyHIPE separators.…”

Section: Figurementioning

confidence: 84%

“…Recent developments exploit high‐energy‐density materials, such as Zn and Li‐ion based batteries, [ 7–10 ] to enhance battery capacity and close the gap to rigid‐island designs. [ 11 ] Despite the progress in capacity and rechargeability, the principle design of planar intrinsically stretchable batteries has largely remained unchanged.…”

Section: Figurementioning

confidence: 99%

“…Hydrogels are often used in water‐based systems, serving as gel electrolyte and separator at the same time. [ 8–10 ] Although hydrogels contain large amounts of electrolyte (>80%), they have an intrinsically lower conductivity due to interactions of ions with the hydrophilic polymer network. [ 20 ] They are also limited to water‐based electrolytes, impeding the use of ionic liquids.…”

Section: Figurementioning

confidence: 99%

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Stretchable Polymerized High Internal Phase Emulsion Separators for High Performance Soft Batteries

Danninger

Hartmann

Paschinger

et al. 2020

Advanced Energy Materials

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large areas available on the skin or within the body. [3] Intrinsically stretchable batteries effectively make use of available space while perfectly complying to deformations and maintaining comfort for the wearer. [4][5][6] Recent developments exploit high-energydensity materials, such as Zn and Li-ion based batteries, [7][8][9][10] to enhance battery capacity and close the gap to rigid-island designs. [11] Despite the progress in capacity and rechargeability, the principle design of planar intrinsically stretchable batteries has largely remained unchanged. The interplay of electrodes, efficient current collectors, highly ionically conductive separators/gelelectrolytes, and their conformal orientation must collectively be optimized to boost battery performance. Promising solutions for single components, including multilayer current collectors, [12] tough electrodes, [13] and self-healing gel-electrolytes [14] were demonstrated recently. However, many prototypes still use the coplanar orientation of electrodes [4,12,[15][16][17] as proposed for the first soft batteries. [18] This design sacrifices performance due to increased ionic pathways in the gel electrolytes. Introducing a sandwich design of stacked battery components (Figure 1a), greatly reduces ionic pathways and therefore the internal resistance of the battery. [19] Soft (sandwich-design) batteries require electron-insulating separators, which have to meet high ion conductivity, extensibility, and chemical inertness. Hydrogels are often used in water-based systems, serving as gel Powering soft embodiments of robots, machines and electronics is a key issue that impacts emerging human friendly forms of technologies. Batteries as energy source enable their untethered operation at high power density but must be rendered elastic to fully comply with (soft) robots and human beings. Current intrinsically stretchable batteries typically show decreased performance when deformed due to design limitations, mainly imposed by the separator material. High quality stretchable separators such as gel electrolytes represent a key component of soft batteries that affects power, internal resistance, and capacity independently of battery chemistry. Here, polymerized high internal phase emulsions (polyHIPEs) are introduced as highly ionically conductive separators in stretchable (rechargeable) batteries. Highly porous (>80%) separators result in electrolyte to polyHIPE conductivity ratios of below 2, while maintaining stretchability of ≈50% strain. The high stretchability, tunable porosity, and fast ion transport enable stretchable batteries with internal resistance below 3 Ω and 16.8 mAh cm −2 capacity that power on-skin processing and communication electronics. The battery/separator architecture is universally applicable to boost battery performance and represents a step towards autonomous operation of conformable electronic skins for healthcare, robotics, and consumers.

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Section: Figurementioning

confidence: 84%

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Stretchable Polymerized High Internal Phase Emulsion Separators for High Performance Soft Batteries

Danninger

Hartmann

Paschinger

et al. 2020

Advanced Energy Materials

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“…Based on these merits, PANa is considered to be a promising polymer electrolyte for applications in ZIBs. Recently, Liu et al107 developed a NiCo–Zn battery on basis of the PANa hydrogel as electrolyte, nickel cobalt hydroxide and zinc nanosheets deposited on an Au@CNT paper as electrodes, which can be seen in Figure 10 a. The electrolyte shows an excellent stretchability (up to 1700%) and high compressibility (nearly to 80%).…”

Section: Recent Progress Of Polymer Electrolytes For Zibsmentioning

confidence: 99%

“…b) Cycling performance, c) GCD curves, capacity enhancement ratio and capacity retention at various strains and stretching times, respectively, d) GCD curves, capacity enhancement ratio, and capacity retention at various compressive strains and experiencing various times of compressive strain, respectively, at 23 A g −1 . Reproduced with permission 107. Copyright 2019, Elsevier.…”

Section: Recent Progress Of Polymer Electrolytes For Zibsmentioning

confidence: 99%

Recent Advances in Polymer Electrolytes for Zinc Ion Batteries: Mechanisms, Properties, and Perspectives

Huang

et al. 2020

Advanced Energy Materials

378

240

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Aqueous rechargeable zinc ion batteries (ZIBs) have been deemed to be possible candidates for large‐scale energy storage due to their ecoefficiency, substantial reserve, safety, and low cost. However, the challenges inherent in aqueous electrolytes, such as water splitting reactions, water evaporation, and liquid leakage, have greatly hindered their development in energy storage. Fortunately, polymer electrolytes would be able to overcome the abovementioned challenges. Moreover, the flexible properties of polymer electrolytes can facilitate their future application in wearable electronics. Recently, increasing attention has been attracted to the polymer electrolyte‐based zinc ion batteries. However, the development of polymer electrolytes for ZIBs is still in the early stages due to numerous challenges. Therefore, substantial research effort is required to overcome the challenges of polymer electrolyte‐based ZIBs. In this review, the current progress in developing polymer electrolytes, including solid polymer electrolytes, gel polymer electrolytes, and hybrid polymer electrolytes, as well as the interactions between electrodes and polymer electrolytes for ZIBs is comprehensively reviewed, analyzed, and discussed in terms of their synthesis, characterization, and performance validation. To facilitate further research and development of polymer electrolytes for ZIBs, the relevant challenges are summarized and analyzed, and some underlying approaches to overcome these challenges are also proposed.

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Electrolytes for Aqueous Zinc‐Ion Batteries

2024

Aqueous Zinc Ion Batteries

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An intrinsically 400% stretchable and 50% compressible NiCo//Zn battery

Cited by 97 publications

References 38 publications

Stretchable Polymerized High Internal Phase Emulsion Separators for High Performance Soft Batteries

Stretchable Polymerized High Internal Phase Emulsion Separators for High Performance Soft Batteries

Recent Advances in Polymer Electrolytes for Zinc Ion Batteries: Mechanisms, Properties, and Perspectives

Electrolytes for Aqueous Zinc‐Ion Batteries

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