Alkaline–Acid Zn–H2O Fuel Cell for the Simultaneous Generation of Hydrogen and Electricity. Issue 15 (25th January 2018)

• Record Type: Journal Article
• Authors: Cai, Pingwei; Li, Yan; Wang, Genxiang; Wen, Zhenhai
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 15(2018)
• Page Start: 3910
• Page End: 3915
• Publication Date: 2018-01-25
• Subjects: electricity generation -- energy conversion -- hybrid fuel cells -- hydrogen production -- zinc; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201712765
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: An alkaline–acid Zn–H2 O fuel cell is proposed for the simultaneous generation of electricity with an open circuit voltage of about 1.25 V and production of H2 with almost 100 % Faradic efficiency. We demonstrate that, as a result of harvesting energy from both electrochemical neutralization and electrochemical Zn oxidation, the as‐developed hybrid cell can deliver a power density of up to 80 mW cm −2 and an energy density of 934 Wh kg −1 and maintain long‐term stability for H2 production with an output voltage of 1.16 V at a current density of 10 mA cm −2 . Abstract : "Everything now" generation : An alkaline–acid Zn–H2 O fuel cell was developed for the simultaneous generation of electricity and H2 (see picture). The cell delivered an open‐circuit voltage of around 1.25 V with almost 100 % Faradic efficiency for H2 production and reached a power density of 80 mW cm −2 and an energy density of 934 Wh kg −1 .