Silicon, the earth’s second most abundant element ushered in new age of computing capability. More recently, silicon is enjoying a second wave of technological adoption as a constituent of lithium-ion battery negative electrodes; made possible in practice by reducing the dimensions to the nanoscale and/or compositing with traditional carbon-based lithium host materials. The large lithium capacity and subsequent volumetric expansion and mechanical fracture have been documented extensively and the nano and composite routes mentioned above provide strategies to overcome this obstacle. We take a new exploratory approach elevating the working temperature to demonstrate reversible alloying and dealloying of lithium and silicon, in its most basic bulk form, a wafer. The brittle nature of silicon may be made more elastic when operated above its brittle-to-ductile transition temperature, potentially leading to more elastic behavior capable of maintaining its structure with modulation of its volume. Here was explore lithium alloying/dealloying into bulk silicon at elevated temperature to assess the efficiently and reversibility of silicon in this environment. While a contrived experiment, we are learning more about lithium diffusion into silicon and may provide a thermal preconditioning of silicon electrode materials to support long cycle for lithium-ion batteries. Additionally, the developmental improvements of a high temperature electrochemical cell will be conveyed along with demonstration of an electrolyte salt, LiTFI, in the molten form. Last, micro computed tomography 3D images will be presented to show crack formation and progression when alloying a bulk silicon wafer with lithium at elevated temperatures.