Recycling of Carbon and Aluminum Components from Heated Tobacco Waste into Supercapacitor Electrodes

초록

This study proposes a novel recycling strategy for converting heated tobacco waste (HTW) into high-performance asymmetric supercapacitor (ASC) electrodes. Cellulose acetate filters (CAFs) and aluminum (Al) papers, carbon and metal components of HTW, were separated, thoroughly washed, and employed as electrode precursors and current collectors, respectively. CAFs were carbonized under nitrogen atmosphere to produce C-CAFs, while Al papers were treated under Al electrodeposition to bridge the electrically disconnected regions. To further enhance the electrochemical performance, nickel oxide (NiO) was deposited onto C-CAF via hydrothermal treatment, resulting in NiO@C-CAF. The ASC device was assembled using NiO@C-CAF and C-CAF as the active materials for positive and negative electrodes, and Al-coated paper as the current collector. As-fabricated device exhibited a specific capacitance of 42.6 F g-1 at 1.0 A g-1 over an extended voltage window of 2.0 V, capable of turning on a 1.8 V LED. This work not only provides a sustainable method for recycling HTW but also demonstrates its practical applicability in energy storage devices. Key words: Heated tobacco waste, Aluminum electrodeposition, Asymmetric supercapacitor, Current collector, Carbon material 사사 본 연구는 2025년 산업통상자원부 및 산업기술기획평가원(KEIT) 연구비 지원에 의한 연구임(RS- 2022-00156073)