Biotene: Earth-Abundant 2D Material as Sustainable Anode for Li/Na-Ion Battery

Abstract

Natural ores are abundant, cost-effective, and environmentally friendly. Ultrathin (2D) layers of a naturally abundant van der Waals mineral, Biotite, have been prepared in bulk via exfoliation. We report here that this 2D Biotene material has shown extraordinary Li−Na-ion battery anode properties with ultralong cycling stability. Biotene shows 302 and 141 mAh g −1 first cycle-specific charge capacity for Li-and Na-ion battery applications with ∼90% initial Coulombic efficiency. The electrode exhibits significantly extended cycling stability with ∼75% capacity retention after 4000 cycles even at higher current densities (500−2000 mA g −1 ). Further, density functional theory studies show the possible Li intercalation mechanism between the 2D Biotene layers. Our work brings new directions toward designing the next generation of metal-ion battery anodes.

A comprehensive review of atomically thin silicates and their applications

“…Copyright (2015) American Chemical Society (d) Thickness dependent conductivity profile with contact potential difference (CPD) graph [76], (e) 2D Biotite TEM images and voltage response graph to applied force [35]. [35] John Wiley & Sons.© 2022 Wiley-VCH GmbH., (f) 2D Biotite application in antimicrobial activity [77], and (g) 2D Biotite application in Li-ion batteries [78]. Reprinted with permission from [78].…”

“…[35] John Wiley & Sons.© 2022 Wiley-VCH GmbH., (f) 2D Biotite application in antimicrobial activity [77], and (g) 2D Biotite application in Li-ion batteries [78]. Reprinted with permission from [78]. Copyright (2024) American Chemical Society.…”

“…2D silicates have shown improved performance in Li-ion and Na-ion batteries and redox flow batteries, thus contributing to improved battery performance in terms of capacity, cycle life, and chargedischarge rates [78]. Potassium-ion batteries, a new area of study, have potential applications in grid-scale energy storage [118].…”