Jeff Becker Mingwei Shang Junjie Niu Layered Mxene/Sn as a Promising Anode for Lithium Ion Batteries with Ultrahigh and Stable Capacity Jeff Becker Mingwei Shang Junjie Niu

Overview What is MXene? MXene and MXene/Sn synthesis Characterization of materials Results

MXene Precursor comes from a variety of MAX powders M=Metal, A=Aluminum, X=Carbon, Nitrogen, Etc. Max Powder is layers of MX and aluminum When aluminum is exfoliated, MXene is formed MXene used=Ti3C2

MXene Synthesis MAX powder is etched HF, exfoliating aluminum layers After washing many times through centrifugation, MXene layers are closely packed MXene is mixed with ethylene glycol and ultra-sonicated for 7+ hours

MXene/Sn Synthesis Tin chloride is stirred with MXene solution Sample is placed in autoclave at high temperatures creating hydrothermal growth of tin nanoparticles within MXene layers Once washed and dried, a slurry can be prepared to be made into an electrode

Characterization MXene/Sn MXene

Results Specific capacitance was ~500 mAh/g after 90+ cycles

Bibliography Fen Wang, Zijing Wang, et al. Facile synthesis SnO2 nanoparticle- modified Ti3C2 MXene nanocomposites for enhanced lithium storage application J Mater Sci (2017) 52:3556–3565 Bilal Ahmeda, Dalaver H.Anjum, et al. Atomic layer deposition of SnO2 on MXene for Li-ion battery anodes Nano Energy 34 (2017) 249–256