Tear-based aqueous batteries for smart contact lenses enabled by prussian blue analogue nanocomposites

Jeonghun Yun; Yongpeng Zeng; Moobum Kim; Caitian Gao; Yeongae Kim; Lu Lu; Tony Tae Hyoung Kim; Wenting Zhao; Tae Hyun Bae; Seok Woo Lee

doi:10.1021/acs.nanolett.0c04362

Tear-based aqueous batteries for smart contact lenses enabled by prussian blue analogue nanocomposites

Jeonghun Yun, Yongpeng Zeng, Moobum Kim, Caitian Gao, Yeongae Kim, Lu Lu, Tony Tae Hyoung Kim, Wenting Zhao, Tae Hyun Bae^*, Seok Woo Lee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prussian blue analogue nanoparticles for cathode and anode were embedded in UV-polymerized hydrogel as not only a soft contact lens but also an ion-permeable separator. The battery exhibited a discharging capacity of 155 μAh in an aqueous electrolyte of 0.15 M Na-ions and 0.02 M K-ions, equivalent to the ionic concentration of tears. The power supply was enough to operate a low-power static random-access memory. In addition, we verified the mechanical stability, biocompatibility and compatibility with a contact lens cleaning solution. It could ultimately enable a safe power supply for smart contact lenses without risk of injury due to the leakage or breakage of the battery.

Original language	English
Pages (from-to)	1659-1665
Number of pages	7
Journal	Nano Letters
Volume	21
Issue number	4
DOIs	https://doi.org/10.1021/acs.nanolett.0c04362
Publication status	Published - Feb 24 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society

ASJC Scopus Subject Areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

Keywords

Aqueous batteries
Flexible batteries
Nanocomposite
Safe batteries
Smart contact lenses
Tear electrolyte

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10.1021/acs.nanolett.0c04362

Cite this

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title = "Tear-based aqueous batteries for smart contact lenses enabled by prussian blue analogue nanocomposites",

abstract = "Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prussian blue analogue nanoparticles for cathode and anode were embedded in UV-polymerized hydrogel as not only a soft contact lens but also an ion-permeable separator. The battery exhibited a discharging capacity of 155 μAh in an aqueous electrolyte of 0.15 M Na-ions and 0.02 M K-ions, equivalent to the ionic concentration of tears. The power supply was enough to operate a low-power static random-access memory. In addition, we verified the mechanical stability, biocompatibility and compatibility with a contact lens cleaning solution. It could ultimately enable a safe power supply for smart contact lenses without risk of injury due to the leakage or breakage of the battery.",

keywords = "Aqueous batteries, Flexible batteries, Nanocomposite, Safe batteries, Smart contact lenses, Tear electrolyte",

author = "Jeonghun Yun and Yongpeng Zeng and Moobum Kim and Caitian Gao and Yeongae Kim and Lu Lu and Kim, {Tony Tae Hyoung} and Wenting Zhao and Bae, {Tae Hyun} and Lee, {Seok Woo}",

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doi = "10.1021/acs.nanolett.0c04362",

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T1 - Tear-based aqueous batteries for smart contact lenses enabled by prussian blue analogue nanocomposites

AU - Yun, Jeonghun

AU - Zeng, Yongpeng

AU - Kim, Moobum

AU - Gao, Caitian

AU - Kim, Yeongae

AU - Lu, Lu

AU - Kim, Tony Tae Hyoung

AU - Zhao, Wenting

AU - Bae, Tae Hyun

AU - Lee, Seok Woo

PY - 2021/2/24

Y1 - 2021/2/24

N2 - Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prussian blue analogue nanoparticles for cathode and anode were embedded in UV-polymerized hydrogel as not only a soft contact lens but also an ion-permeable separator. The battery exhibited a discharging capacity of 155 μAh in an aqueous electrolyte of 0.15 M Na-ions and 0.02 M K-ions, equivalent to the ionic concentration of tears. The power supply was enough to operate a low-power static random-access memory. In addition, we verified the mechanical stability, biocompatibility and compatibility with a contact lens cleaning solution. It could ultimately enable a safe power supply for smart contact lenses without risk of injury due to the leakage or breakage of the battery.

AB - Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prussian blue analogue nanoparticles for cathode and anode were embedded in UV-polymerized hydrogel as not only a soft contact lens but also an ion-permeable separator. The battery exhibited a discharging capacity of 155 μAh in an aqueous electrolyte of 0.15 M Na-ions and 0.02 M K-ions, equivalent to the ionic concentration of tears. The power supply was enough to operate a low-power static random-access memory. In addition, we verified the mechanical stability, biocompatibility and compatibility with a contact lens cleaning solution. It could ultimately enable a safe power supply for smart contact lenses without risk of injury due to the leakage or breakage of the battery.

KW - Aqueous batteries

KW - Flexible batteries

KW - Nanocomposite

KW - Safe batteries

KW - Smart contact lenses

KW - Tear electrolyte

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Tear-based aqueous batteries for smart contact lenses enabled by prussian blue analogue nanocomposites

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

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