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http://hdl.handle.net/10397/95725
Title: | A liquid e-fuel cell operating at -20 °C | Authors: | Shi, X Huo, X Esan, OC Ma, Y An, L Zhao, TS |
Issue Date: | 15-Sep-2021 | Source: | Journal of power sources, 15 Sept. 2021, v. 506, 230198 | Abstract: | An electrically rechargeable liquid fuel (e-fuel) system, which comprises an e-fuel charger and an e-fuel cell, has recently been proposed and proven as an effective approach for storing renewable energy. Potential e-fuels are stated to be obtainable from various electroactive materials including metal ions. In this work, a liquid e-fuel made of vanadium ions for anodic reaction is introduced. Utilizing this e-fuel paired with oxygen at the cathode side, the operation of a liquid e-fuel cell, capable of generating electricity stably at sub-zero cell temperature as low as −20 °C, without involving any form of internal or external heating system is demonstrated. At −20 °C, this liquid e-fuel cell demonstrates a peak power density of 76.8 mW cm−2 and an energy efficiency of 25.2% at 30 mA cm−2, which outperforms all the conventional direct liquid alcohol fuel cells operating under sub-zero environment and even at room temperatures. The successful operation of this e-fuel cell, with its competence and impressive performance at sub-zero temperatures, even at the first time of its demonstration, opens a significant window of opportunity towards the advancement of fuel cell technology, particularly for energizing future fuel cell electric vehicles with an all-climate operation. | Keywords: | E-fuel Energy efficiency Fuel cell electric vehicles Liquid e-fuel cells Power density Sub-zero environment |
Publisher: | Elsevier | Journal: | Journal of power sources | ISSN: | 0378-7753 | EISSN: | 1873-2755 | DOI: | 10.1016/j.jpowsour.2021.230198 | Rights: | © 2021 Elsevier B.V. All rights reserved. © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Shi, X., et al. (2021). "A liquid e-fuel cell operating at −20 °C." Journal of Power Sources 506: 230198 is available at https://dx.doi.org/10.1016/j.jpowsour.2021.230198. |
Appears in Collections: | Journal/Magazine Article |
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Shi_Liquid_E-Fuel_Cell_.pdf | Pre-Published version | 2.12 MB | Adobe PDF | View/Open |
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