2026-04-29T02:45:41Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/69832022-09-22T00:06:39Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823

Páez, Teresa e4384858-54d3-4b74-9b1a-c5f1587f8ad4 600 Martínez Cuezva, Alberto 344 600 Palma, Jesús 61bd75b6-b9e7-4cf9-94da-73393eee4ba2 600 Ventosa Arbaizar, Edgar a657ff78-9d9c-4d24-aac4-c4adbaac9992 600 2022-09-21T11:00:10Z 2022-09-21T11:00:10Z 2019-11 2574-0962 http://hdl.handle.net/10259/6983 10.1021/acsaem.9b01826 2574-0962 Alkaline flow batteries are attracting increasing attention for stationary energy storage. Very promising candidates have been proposed as active species for the negative compartment, while potassium ferrocyanide (K4Fe(CN)6) has been the only choice for the positive one. The energy density of this family of batteries is limited by the low solubility of K4Fe(CN)6 in alkaline media. Herein, we propose a general strategy to increase the energy density of this family of alkaline flow batteries by storing energy in commercial Ni(OH)2 electrodes confined in the positive reservoir. In this way, K4Fe(CN)6 dissolved in the electrolyte acts not only as electroactive species but also as charge carrier between current collector and solid Ni(OH)2 particles located in an external reservoir. A storage capacities of 29 Ah L–1 for the positive compartment is demonstrated. The concept is implemented in three systems, Zn–K4Fe(CN)6, anthraquinone–K4Fe(CN)6, and phenazine–K4Fe(CN)6 alkaline flow battery, showing the versatility of the strategy. Challenges and future directions to exceed the 16 Wh Ltotal–1 demonstrated in this work are discussed. Comunidad de Madrid in the Framework of the Talent Attraction Programme (Grant 2017-T1/AMB-5190) and the Spanish Ministry of Science, Innovation and Universities in the Framework of the Research Challenges Programme (Grant RTI2018-099228-A-I00) is gratefully acknowledged. A.M.-C. thanks Ministerio de Ciencia, Innovación y Universidades for a Ramon y Cajal contract and funding (Grant RYC-2017-22700). application/pdf eng American Chemical Society ACS Applied Energy Materials. 2019, V. 2, n. 11, p. 8328–8336 https://doi.org/10.1021/acsaem.9b01826 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099228-A-I00/ES/BATERIAS INJECTABLES DE ELECTRODES SEMI-SOLIDOS info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2017-22700 info:eu-repo/grantAgreement/CAM//2017-T1%2FAMB-5190 Energy storage Batteries Redox mediators Energy density Ferrocyanide Química analítica Chemistry, Analytic Mediated Alkaline Flow Batteries: From Fundamentals to Application info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess ACS Applied Energy Materials 2 11 8328 8336 THUMBNAIL Paez-acsaem_2019.pdf.jpg Paez-acsaem_2019.pdf.jpg IM Thumbnail image/jpeg 4294 https://riubu.ubu.es/bitstream/10259/6983/3/Paez-acsaem_2019.pdf.jpg 098422af0626398cd269d51a1ccc1ff7 MD5 3 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/6983/2/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 2 ORIGINAL Paez-acsaem_2019.pdf Paez-acsaem_2019.pdf application/pdf 1529208 https://riubu.ubu.es/bitstream/10259/6983/1/Paez-acsaem_2019.pdf 5e76598df51a6f2bcc22d0996610e456 MD5 1 10259/6983 oai:riubu.ubu.es:10259/6983 2022-09-22 02:06:39.249 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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