title: A carbon-air battery for high power generation.
abstract: We report a carbon-air battery for power generation based on a solid-oxide fuel cell (SOFC) integrated with a ceramic CO2-permeable membrane. An anode-supported tubular SOFC functioned as a carbon fuel container as well as an electrochemical device for power generation, while a high-temperature CO2-permeable membrane composed of a CO3(2-) mixture and an O(2-) conducting phase (Sm(0.2)Ce(0.8)O(1.9)) was integrated for in situ separation of CO2 (electrochemical product) from the anode chamber, delivering high fuel-utilization efficiency. After modifying the carbon fuel with a reverse Boudouard reaction catalyst to promote the in situ gasification of carbon to CO, an attractive peak power density of 279.3 mW cm(-2) was achieved for the battery at 850 °C, and a small stack composed of two batteries can be operated continuously for 200 min. This work provides a novel type of electrochemical energy device that has a wide range of application potentials.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Nanjing Tech University, 5 Xin Mofan Road, Nanjing 210009 (P.R. China).
authors.forename: Binbin
authors.initials: B
authors.lastname: Yang
authors.forename: Ran
authors.initials: R
authors.lastname: Ran
authors.forename: Yijun
authors.initials: Y
authors.lastname: Zhong
authors.forename: Chao
authors.initials: C
authors.lastname: Su
authors.forename: Moses O
authors.initials: MO
authors.lastname: Tadé
authors.forename: Zongping
authors.initials: Z
authors.lastname: Shao
keywords: carbon-air batteries; fuel cells; gas diffusion; homogeneous catalysis; separation membranes