2026-04-29T20:55:48Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/63612022-11-17T11:39:17Zcom_10259_3593com_10259_5086com_10259_2604com_10259_5822col_10259_3594col_10259_5823

00925njm 22002777a 4500 dc Páez, Teresa author Zhang, FeiFei author Lubian, Lara author Xi, Shibo author Wang, Qing author Palma, Jesús author Muñoz Torres, Miguel Ángel author Sanz Díez, Roberto author Ventosa Arbaizar, Edgar author 2022-01 Each battery technology possesses intrinsic advantages and disadvantages, e.g., nickel–metal hydride (MH) batteries offer relatively high specific energy and power as well as safety, making them the power of choice for hybrid electric vehicles, whereas aqueous organic flow batteries (AORFBs) offer sustainability, simple replacement of their active materials and independent scalability of energy and power, making them very attractive for stationary energy storage. Herein, a new battery technology that merges the above mentioned battery technologies through the use of redox-mediated reactions is proposed that intrinsically possesses the main features of each separate technology, e.g., high energy density of the solid active materials, easy recyclability, and independent scalability of energy and power. To achieve this, Ni(OH)2 and MHs are confined in the positive and negative reservoirs of an AORFB that employs alkaline solutions of potassium ferrocyanide and a mixture of 2,6-dihydroxyanthraquinone and 7,8-dihydroxyphenazine-2-sulfonic acid as catholyte and anolyte, respectively. An energy density of 128 Wh L–1 is achieved based on the capacity of the reservoirs leaving ample room for improvement up to the theoretical limit of 378 Wh L–1. This new battery technology opens up new market opportunities never before envisaged, for redox flow batteries, e.g., domestic energy storage and heavy-duty vehicle transportation. 1614-6832 http://hdl.handle.net/10259/6361 10.1002/aenm.202102866 1614-6840 Electrochemistry Redox flow batteries Redox mediators Redox targeting Solid boosters The Redox‐Mediated Nickel–Metal Hydride Flow Battery