All-solid-state Li–sulfur batteries with mesoporous electrode and thio-LISICON solid electrolyte

• Published in: Journal of power sources 2013-01, Vol.222, p.237-242
• Main Authors: Nagao, Miki, Imade, Yuki, Narisawa, Haruto, Kobayashi, Takeshi, Watanabe, Ryota, Yokoi, Toshiyuki, Tatsumi, Takashi, Kanno, Ryoji
• Format: Article
• Language: English
• Subjects: All-solid-state battery; Applied sciences; Carbon; CMK-3; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Lithium secondary battery; Mesoporous carbon; Sulfur
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2012.08.041

All-solid-state lithium–sulfur batteries were developed using elemental sulfur as a positive electrode, Li–Al alloy as a negative electrode, thio-LISICON as a solid electrolyte, and mesoporous carbon (CMK-3) as the framework for the positive electrode. The mesoporous framework provided high electrical conduction and improved electrode utilization. The sulfur provided a high reversible capacity and high current charge discharge characteristics. Sulfur introduced into the pore structure of the mesoporous carbon interacts with edges of the graphene sheet and both the sulfur and graphene layers participate in a highly reversible reaction. ► All-solid-state battery with a composite cathode, sulfur/CMK-3, and solid electrolyte, thio-LISICON was studied. ► CMK-3 is a high ordered two-dimensional meso-porous carbon and provides a framework structure for the cathode composite. ► The sulfur/CMK-3 cathode exhibited high capacity and excellent cycling characteristics.