hard carbon are promising anodes for sodium ion batteries, due to their high capacity and green production from biowaste. However, they require treatment at very high temperatures above 1000 C significantly increasing the carbon footprint of the material. Here we propose to measure a hydrothermal carbon(HTC) derived from glucose as a model system for biowaste. Using the RISO furnace available at ISIS we can measure in situ the transformation of HTC to hard carbon during heating from 100 C to 1900 C. Two samples will be measured to reveal the process and better understand how the annealing temperature can be decreased.