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lithium-metal-free sulfur batteries with Biochar and Steam-Activated Biochar-Based Anodes from Spent Common Ivy

Energy & Environmental Materials 2024年第6期7卷 118-128页

作者： Pejman Salimi Willem Vercruysse Susana Chauque Saeed Yari Eleonora Venezia Amine Lataf Nahal Ghanemnia Muhammad Shajih Zafar Mohammadhosein Safari An Hardy Remo Proietti Zaccaria Dries Vandamme Istituto Italiano di Tecnologia via Morego 30Genoa 16163Italy Department of Chemistry and Industrial Chemistry University of Genovavia Dodecaneso 31Genoa I-16146Italy Analytical and Circular Chemistry(ACC) Hasselt UniversityMartelarenlaan 42Hasselt BE3500Belgium Institute for Materials Research(imo-imomec) Hasselt UniversityMartelarenlaan 42Hasselt BE3500Belgium Centre for Environmental Sciences(CMK) Hasselt UniversityMartelarenlaan 42Hasselt BE3500Belgium Energyville Thor Park 8310Genk BE3600Belgium IMEC Division IMOMECWetenschapspark 1Diepenbeek BE3590Belgium

lithium-sulfur batteries are emerging as sustainable replacements for current lithium-ion *** commercial viability of this novel type of battery is still under debate due to the extensive use of highly reactive lithium-metal anodes and the complex electrochemistry of the sulfur *** this research,a novel sulfur-based battery has been proposed that eliminates the need for metallic lithium anodes and other critical raw materials like cobalt and graphite,replacing them with biomass-derived *** approach presents numerous benefits,encompassing ample availability,cost-effectiveness,safety,and environmental *** particular,two types of biochar-based anode electrodes(non-activated and activated biochar)derived from spent common ivy have been investigated as alternatives to metallic *** compared their structural and electrochemical properties,both of which exhibited good compatibility with the typical electrolytes used in sulfur ***,while steam activation results in an increased specific surface area,the non-activated ivy biochar demonstrates better performance than the activated biochar,achieving a stable capacity of 400 mA h g^(−1)at 0.1 A g^(−1)and a long lifespan(>400 cycles at 0.5 A g^(−1)).Our results demonstrate that the presence of heteroatoms,such as oxygen and nitrogen positively affects the capacity and cycling performance of the *** led to increased d-spacing in the graphitic layer,a strong interaction with the solid electrolyte interphase layer,and improved ion ***,the non-activated biochar was successfully coupled with a sulfur cathode to fabricate lithium-metal-free sulfur batteries,delivering a specific energy density of~600 Wh kg^(−1).

关键词： activated biochar biochar electrochemical performance functional groups lithium-metal-free sulfur batteries

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