The carbon aerogel will need to first undergo a pyrolysis process to change graphene oxide into reduced graphene oxide. For this pyrolysis process, the aerogel is first annealed in 200 sccm argon flow, and then heated up to 500 ˚C at a rate of 2 ˚C / min and kept at that temperature for 1 hour. Then, the aerogel is further heated up to 900 ˚C at a rate of 5 ˚C / min and kept at that temperature for 2 more hours. After these 2 hours, the aerogel is left to cool back down to room temperature. (See supplemental image S2 for reference)