인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Carbon derived from biomass, characterized by its abundant porosity and adaptable physical and chemical traits, has emerged as a promising choice for electrode materials in electrochemical energy storage devices like supercapacitors and lithium-sulfur (Li-S) batteries, marking a rapidly advancing field. Herein, we report the creation of a fresh biomass-derived activated carbon produced <i>via</i> a pyrolysis technique using a blend of indigenous European deciduous trees, including Birch, Fagaceae, and Carpinus betulus (commonly referred to as European hornbeam). The biomass-derived activated carbon underwent various material characterizations to scrutinize its structural, morphological, and elemental compositions. Utilizing this biomass-derived activated carbon as the electrode material across different supercapacitor configurations (such as coin cells and printable miniaturized devices) and as sulfur hosts in Li-S batteries paves the way for expanded applications in biomass energy utilization. The supercapacitor devices were successfully fabricated and shown to be operated efficiently within an operational potential range of 2.5 V (0.0-2.5 V) utilizing an EMIMBF<sub>4</sub> ionic liquid electrolyte. The symmetrical coin cell supercapacitor device achieved a notable energy density of approximately 23.52 W h kg<sup>-1</sup> when subjected to an applied current density of 0.66 A g<sup>-1</sup>. Furthermore, Li-S batteries were assembled, incorporating a composite cathode composed of activated carbon derived from biomass and sulfur. Subsequently, cyclic voltammetry alongside charge-discharge assessments at varying scan rates and C-rates were performed, respectively. The sulfur-biomass-derived activated carbon (BAC) composite delivers an initial discharge capacity of 661 mA h g<sup>-1</sup> at a C-rate of 0.05C. Long-term cycling tests were conducted at 1C and 0.5C over 500 cycles, achieving coulombic efficiencies of approximately 99% and 97%, respectively, in sulfur-biomass-derived activated carbon composite-based Li-S batteries. Hence, our research showcases the scalable synthesis of biomass-derived activated carbon and its utilization as a versatile electrode material, laying the groundwork for the next generation of multifunctional sustainable energy storage systems.
#Deciduous
#Renewable energy
#Biomass (ecology)
#Energy storage
#Indigenous
#Sustainable energy
#Carbon fibers
#Electrochemical energy storage
#Environmental science
#Nanotechnology
#Characterization (materials science)
#Materials science
#Agroforestry
#Electrochemistry
#Supercapacitor
#Chemistry
#Botany
#Ecology
#Power (physics)
#Electrode
#Composite number
#Composite material
#Biology
#Physics
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