Integrating micro metal‐air batteries in lateral flow test for point‐of‐care applications

Wang, Yifei; Pan, Wending; Luo, Shijing; Zhao, Xiaolong; Kwok, Holly Y.H.; Leung, Dennis Y.C.

doi:10.1002/er.5953

Cited by 8 publications

(1 citation statement)

References 33 publications

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“…242−245 Despite being great examples of the capabilities of paperbased batteries, the power output of the aforementioned single cells was only on the order of microwatts, which is inadequate for most practical applications. Metal-air battery chemistries, such as Al-air and Mg-air, 246 are another promising configuration with high energy density and capability to produce adequate power. Wang et al reported a low-cost paper-based Al-air battery targeting milliwatt level applications.…”

Section: Galvanic Cellsmentioning

confidence: 99%

Microfluidics for Electrochemical Energy Conversion

et al. 2022

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Electrochemical energy conversion is an important supplement for storage and on-demand use of renewable energy. In this regard, microfluidics offers prospects to raise the efficiency and rate of electrochemical energy conversion through enhanced mass transport, flexible cell design, and ability to eliminate the physical ion-exchange membrane, an essential yet costly element in conventional electrochemical cells. Since the 2002 invention of the microfluidic fuel cell, the research field of microfluidics for electrochemical energy conversion has expanded into a great variety of cell designs, fabrication techniques, and device functions with a wide range of utility and applications. The present review aims to comprehensively synthesize the best practices in this field over the past 20 years. The underlying fundamentals and research methods are first summarized, followed by a complete assessment of all research contributions wherein microfluidics was proactively utilized to facilitate energy conversion in conjunction with electrochemical cells, such as fuel cells, flow batteries, electrolysis cells, hybrid cells, and photoelectrochemical cells. Moreover, emerging technologies and analytical tools enabled by microfluidics are also discussed. Lastly, opportunities for future research directions and technology advances are proposed.

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Section: Galvanic Cellsmentioning

confidence: 99%

Microfluidics for Electrochemical Energy Conversion

et al. 2022

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Cotton‐Based Metal–Air Batteries without Catalysts as Low‐Cost Micropower Devices

Liu,

Jiang,

Liu

et al. 2023

Energy Tech

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The cotton‐based metal–air batteries without any catalyst are constructed. Especially, the continuous electrolyte flowing depends on the capillary force and the gravity from the height difference between the inlet and outlet. The performance of the cotton‐based metal–air batteries under 2 mol L−1 NaOH or NaCl solutions is compared. The Al–air battery performance in the NaOH solution is better, while the Mg–air battery performance in the NaCl solution is the best. Considering the battery performance and cost, the alkaline cotton‐based Al–air battery is investigated for the subsequent experiments. The Al–air battery performance is evaluated under the different cotton cloth makeups, NaOH concentrations, height differences between the inlet and outlet. The results show that under the conditions of the cotton makeup (20 (warp) × 60 (yarn)), 4 mol L−1 NaOH and 60 mm height difference, the battery performance is optimal, with the peak power density of 12.33 ± 0.38 mW cm−2 and limiting current density of 35.28 ± 0.73 mA cm−2. To apply the cotton‐based Al–air battery, the two‐battery stack connected in series powers 15 light‐emitting diodes. The experiments demonstrate the cotton‐based Al–air battery without catalysts owns low cost and high power output, which has great potential as a micropower device.

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Performance Comparison of Paper‐ and Cotton‐Based Al‐Air Batteries without Catalysts for Low‐Cost Portable Micro Devices

Liu

et al. 2023

ChemistrySelect

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Conventional Al‐air batteries are not suitable as portable power devices due to their complicated water management and bulky system. To resolve this issue, the fiber paper‐ and cotton cloth‐based Al‐air batteries were proposed, which exploited the capillary force from the paper (FP) and cotton cloth (CC) to deliver the solutions and eliminated the external pump. The physical features of the FP and CC were gained including the surface morphologies, surface elementary analysis, liquid absorption and flow rates. CC owned larger liquid absorption and faster flow rate due to its hierarchically woven‐spun fiber structure, compared to the randomly oriented fibers of the FP, although the surface of the CC demonstrated lower O/C ratio than that of the FP. So, the performance of the CC‐based Al‐air battery was largely higher than that of the FP‐based battery. The performance of the CC‐based Al‐air battery was optimal at 1.0 M NaOH electrolyte and the anode‐to‐cathode surface area ratio of 1 : 4, with the peak power density of 14.95±0.28 mW cm−2, and the maximum current density of 36.61±0.54 mA cm−2. To apply the CC‐based Al‐air battery, the two‐battery pack connected in series was assembled to drive a timer and light 9 LEDs.

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Integrating micro metal‐air batteries in lateral flow test for point‐of‐care applications

Cited by 8 publications

References 33 publications

Microfluidics for Electrochemical Energy Conversion

Microfluidics for Electrochemical Energy Conversion

Cotton‐Based Metal–Air Batteries without Catalysts as Low‐Cost Micropower Devices

Performance Comparison of Paper‐ and Cotton‐Based Al‐Air Batteries without Catalysts for Low‐Cost Portable Micro Devices

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