Swimmable Micro‐Battery for Targeted Power Delivery

Li, Pengzhou; Yang, Zhe; Li, Chuanfa; Li, Jiaxin; Wang, Chuang; Chen, Jiawei; Yu, Sijia; Zhang, Yanan; Jiang, Yi; Gao, Yue; Wang, Bingjie; Peng, Huisheng

doi:10.1002/adfm.202312188

Adv Funct Materials

2023

DOI: 10.1002/adfm.202312188

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Swimmable Micro‐Battery for Targeted Power Delivery

Pengzhou Li,

Zhe Yang,

Chuanfa Li

et al.

Abstract: The boom of microelectronic devices and their diverse applications has heightened the demand for innovative and effective energy supply strategies. The longevity of contemporary microelectronic devices predominantly depends on direct human intervention power supply methods, encompassing battery replacement or recharging. However, these methods may falter in specific scenarios, such as when facing liquid conditions in vivo. Here, a concept of swimmable micro‐batteries (MBs) for targeted power delivery is presen… Show more

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Cited by 4 publications

References 61 publications

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Lightweight Zn‐Philic 3D‐Cu Scaffold for Customizable Zinc Ion Batteries

Shi,

Zhou,

Jiang

et al. 2024

Adv Funct Materials

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Porous metal current collectors (CCs) serve as key component for aqueous Zn‐ion batteries (AZIBs). Herein, a lightweight 3D‐Cu architecture with customizable geometries is developed to enable reversible Zn‐metal cycling. The 3D‐Cu is prepared by 3D‐printing a crosslink‐able polymer scaffold followed by Cu‐metallization. The printed architecture is optimized to endow 3D‐Cu with electric conductivity that is on‐par with commercial Cu foam, but can reduce ≈80% of the weight and consumption of Cu. A Zn‐philic graphene (Gr) coating is adopted to promote uniform and (002)‐preferred Zn growth onto the 3D‐Cu surface, creating a 3DP‐Cu@Gr architecture that induces conformal Zn‐deposition and greatly suppressed H2‐evolution reaction. The 3DP‐Cu@Gr||Zn shows stable 700 cycles at 4 mA cm−2 and 2 mAh cm−2, with coulombic efficiency >99.6%. Zn‐loaded 3D‐electrodes enable symmetrical cells with stable 300 h cycling at 10 mA cm−2, delivering a specific accumulated capacity of 86.7 Ah g−1. This represents an unprecedented combination of cycle stability, high charge rate, and electrode lightweight. The all‐printed pantacle‐shape full pouch cells (3.6 mAh) exhibit 91.4% capacity retention after 200 cycles at 1 C. Possessing unusual design freedom, this strategy demonstrates a pathway for developing lightweight Cu CCs and customizable high‐energy AZIBs.

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Lightweight Zn‐Philic 3D‐Cu Scaffold for Customizable Zinc Ion Batteries

Shi,

Zhou,

Jiang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

Functionalized Quasi‐Solid‐State Electrolytes in Aqueous Zn‐Ion Batteries for Flexible Devices: Challenges and Strategies

Han,

Liu,

Zhang

et al. 2024

Advanced Materials

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The rapid development of wearable and intelligent flexible devices has posed strict requirements for power sources, including excellent mechanical strength, inherent safety, high energy density, and eco‐friendliness. Zn‐ion batteries with aqueous quasi‐solid‐state electrolytes (AQSSEs) with various functional groups that contain electronegative atoms (O/N/F) with tunable electron accumulation states are considered as a promising candidate to power the flexible devices and tremendous progress has been achieved in this prospering area. Herein, this review proposes a comprehensive summary of the recent achievements using the AQSSE in flexible devices by focusing on the significance of different functional groups. The fundamentals and challenges of the ZIBs are introduced from a chemical view in the first place. Then, the mechanism behind the stabilization of the flexible ZIBs with the functionalized AQSSE is summarized and explained in detail. Then the recent progress regarding the enhanced electrochemical stability of the ZIBs with the AQSSE is summarized and classified based on the functional groups on the polymer chain. The advanced characterization methods for the AQSSE are briefly introduced in the following sections. Last but not least, current challenges and future perspectives for this promising area are provided from the authors' point of view.

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Efficient Energy Management for Intelligent Microrobotic Swarms: Design and Impact

Zhu,

McCaskill,

Karnaushenko

et al. 2024

Advanced Energy Materials

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Energy serves as the foundational element for all active functions within microrobots. Harvesting devices, such as photovoltaic cells and coils, play a crucial role in converting diverse forms of energy into electricity, while energy storage devices enable uninterrupted operation and liberate microrobots from dependence on external sources. Despite the evident importance of energy, there exists a significant disconnect between the development of energy devices and their integration into microrobotic systems, hampering the deployment of microrobots across diverse fields from agriculture to microsurgery. Here, for transcending the “material for material's sake” focus on simple generic metrics for material optimization, such as energy density, advocating attention to the higher tier transformation of material metrics that determine device‐level performance and so make a meaningful contribution to microrobotic technology is argued. Appropriate metrics for microrobotic swarms challenge the stereotype that tiny energy supplies are impractical; instead, swarms simplify individual microrobotic functions, reducing single energy supply requirements and utilizing swarm energy distribution and management. In addition to essential evaluations of the environmental and social impacts of intelligent microrobotic swarms for their safe and beneficial implementation, research targeting these higher‐tier metrics is crucial to connecting energy material research and microrobot developments effectively.

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Swimmable Micro‐Battery for Targeted Power Delivery

Cited by 4 publications

References 61 publications

Lightweight Zn‐Philic 3D‐Cu Scaffold for Customizable Zinc Ion Batteries

Lightweight Zn‐Philic 3D‐Cu Scaffold for Customizable Zinc Ion Batteries

Functionalized Quasi‐Solid‐State Electrolytes in Aqueous Zn‐Ion Batteries for Flexible Devices: Challenges and Strategies

Efficient Energy Management for Intelligent Microrobotic Swarms: Design and Impact

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