An ultraflexible energy harvesting-storage system for wearable applications

Sakeena Saifi, Xiao Xiao, Simin Cheng, Haotian Guo, Jinsheng Zhang, Peter Müller-Buschbaum, Guangmin Zhou, Xiaomin Xu () and Hui-Ming Cheng ()
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Sakeena Saifi: Tsinghua University
Xiao Xiao: Tsinghua University
Simin Cheng: Tsinghua University
Haotian Guo: Tsinghua University
Jinsheng Zhang: Chair for Functional Materials
Peter Müller-Buschbaum: Chair for Functional Materials
Guangmin Zhou: Tsinghua University
Xiaomin Xu: Tsinghua University
Hui-Ming Cheng: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-16

Abstract: Abstract The swift progress in wearable technology has accentuated the need for flexible power systems. Such systems are anticipated to exhibit high efficiency, robust durability, consistent power output, and the potential for effortless integration. Integrating ultraflexible energy harvesters and energy storage devices to form an autonomous, efficient, and mechanically compliant power system remains a significant challenge. In this work, we report a 90 µm-thick energy harvesting and storage system (FEHSS) consisting of high-performance organic photovoltaics and zinc-ion batteries within an ultraflexible configuration. With a power conversion efficiency surpassing 16%, power output exceeding 10 mW cm–2, and an energy density beyond 5.82 mWh cm–2, the FEHSS can be tailored to meet the power demands of wearable sensors and gadgets. Without cumbersome and rigid components, FEHSS shows immense potential as a versatile power source to advance wearable electronics and contribute toward a sustainable future.

Date: 2024
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DOI: 10.1038/s41467-024-50894-w

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