An innovative electronically-conducting matrix of the cathode for sodium sulfur battery

作者：Kim Seong In; Park Won Il; Jung Keeyoung; Kim Chang Sam^*

来源：Journal of Power Sources, 2016, 320: 37-42.

DOI：10.1016/j.jpowsour.2016.04.041

• Sodium sulfur battery
• Carbon felt
• Sol-gel coating
• Sodium polysulfides
• Wettability

An innovative electronically-conducting cathode matrix, that makes sodium sulfur (NaS) battery excellent in discharge-charge performance, is prepared by surface modification of a carbon felt with inorganic nanoparticles. A carbon felt is dipped into an inorganic-organic hybrid sol, dried, and heat-treated at 600 degrees C for 2 h in a flowing argon. Coated surface of the felt has been examined by scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX) and scanning transmission electron microscopy (STEM). The cell prepared with the coated carbon felt shows 92% of charge acceptance and 99.9% of coulombic efficiency at 100 mA cm(-2) of current density.

• 出版日期2016-7-15