Self-charging hybrid energy devices collaborated with enzymatic biofuel cells and supercapacitors

Lee, Joonyoung; Han, Sunmin; Kwon, Yongchai

doi:10.1016/j.cej.2024.150557

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.150557

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Self-charging hybrid energy devices collaborated with enzymatic biofuel cells and supercapacitors

Joonyoung Lee,

Sunmin Han,

Yongchai Kwon

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2024

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Cited by 3 publications

References 47 publications

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Research advances in electrochemical human motion energy harvesting technologies

Jiao,

Ma,

Gao

2024

Journal of Electroanalytical Chemistry

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Research advances in electrochemical human motion energy harvesting technologies

Jiao,

Ma,

Gao

2024

Journal of Electroanalytical Chemistry

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Synergistic convergence of materials and enzymes for biosensing and self-sustaining energy devices towards on-body health monitoring

Khumngern,

Jeerapan

2024

Commun Mater

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Wearable enzyme-based biosensors enable advanced healthcare diagnostics through the monitoring of biomarkers and physiological states. The integration of materials engineering and enzyme conjugation has established the groundwork for advancements in modern analytical chemistry, poised to extend the frontiers of wearable biosensing further. Recent advancements in enzymatic biofuel cells have also enhanced devices by harnessing biofuels, such as glucose and lactate in biofluids. Importantly, biofuel cells offer the potential for self-powered biosensors. Here, we present an overview of the principles and considerations associated with engineering materials and integrating enzymes with electrodes to achieve effective wearable biosensing and self-sustaining biofuel cell-based energy systems. Furthermore, we discuss challenges encountered by enzymatic sensors and biofuel cells. Representative applications of wearable devices in healthcare settings are highlighted, along with a summary of real sample analyses, emphasizing the concentration ranges of analytes present in actual sweat samples to underscore their relevance in real-world scenarios. Finally, the discussion explores the anticipated impact of future material innovations and integrations on the development of next-generation wearable biodevices.

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Flexible Manganese Oxide Electrode Fabricated with Heat‐Treated Buckypaper for Supercapacitor

Lee,

Kwon

2024

International Journal of Energy Research

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With the emergence of new technologies, wearable and portable devices become essential tools for various applications, which are flexibly designed. In this situation, flexible supercapacitors with fast charge and discharge cycles are needed as their power source. This study introduces the flexible pseudocapacitor electrode fabricated by electrodeposition of manganese oxide (MnO2) onto heat‐treated hydrophilic buckypaper (BP) molded on polydimethylsiloxane (PDMS). Here, the heat treatment of BP that is optimized by a proper adoption of thermogravimetric analysis is performed to enhance the electrodeposition efficiency of MnO2. Then, proper hydrophilicity of the heat‐treated BP (H‐BP) and successful preparation of MnO2/H‐BP@PDMS electrode is well confirmed by electrochemical, spectroscopical, and optical measurements. In their evaluations, it is found that heat treatment of BP is more important factor than electrodeposition time to improve the electrodeposition efficiency of MnO2 under the same aqueous electrolyte. With that, such optimally prepared MnO2/H‐BP@PDMS electrode shows a high electrical double layer and excellent specific capacitance of 1.31 F/cm2 at 1 mA/cm2, which are better results than those of other electrodes.

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Self-charging hybrid energy devices collaborated with enzymatic biofuel cells and supercapacitors

Cited by 3 publications

References 47 publications

Research advances in electrochemical human motion energy harvesting technologies

Research advances in electrochemical human motion energy harvesting technologies

Synergistic convergence of materials and enzymes for biosensing and self-sustaining energy devices towards on-body health monitoring

Flexible Manganese Oxide Electrode Fabricated with Heat‐Treated Buckypaper for Supercapacitor

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