Preparation method of cement-based composite carbon electrode

• Main Authors: HE CHANGWEI, TIAN XINMEI, A PING, ZHENG MINGHUI, WANG LUOCHUN, KONG XIANGLIN, LI LIN, WEN CHENXU, CHEN YU, YE WENCHAO, XU BIAO, JIANG KUNYU, MA QIANQIAN, GE HANGJIAN
• Format: Patent
• Language: Chinese; English
• Published: 10.08.2018
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a preparation method of a cement-based composite carbon electrode. The preparation method comprises a step of punching on graphite paper and a step of preparing a graphite powder-activated carbon-cement-fly ash composite material electrode and comprises the specific steps: taking activated carbon as an active material, graphite powder as a conducting agent and cement and flyash as a bonding agent; respectively weighing and then mixing; adding de-ionized water and sufficiently stirring; pressing an obtained slurry-shaped solid matter on two faces of the graphite paper; then putting the graphite paper in a cement culture box to prepare a graphite powder-activated carbon-cement-fly ash composite material; taking the prepared composite material as a working electrode; taking a platinum electrode as an auxiliary electrode and an Ag/AgCl electrode as a reference electrode; carrying out electrodeposition for 240s under a constant potential of -0.8V; putting the electrodes subjected to the elec