Li, J.,Ji, K.,Li, B.,Xu, M.,Wang, Y.,Zhou, H.,Shi, Q.,Duan, H.*
Angew Chem Int Ed Engl 2023, e202304852.
The development of a rechargeable battery that can produce valuable chemicals in both electricity storage and generation processes hold great promise for increasing the electron economy and economic value. However, this battery has yet to be explored. Herein, we report a biomass flow battery that generates electricity while producing furoic acid, and store electricity while yielding furfuryl alcohol. The battery is composed of a rhodium- copper (Rh1Cu) single-atom alloy as anode, a cobalt-doped nickel
hydroxide (Co0.2Ni0.8(OH)2) as cathode, and furfural-containing anolyte. In a full battery evaluation, this battery displays an open circuit voltage (OCV) of 1.29 V and a peak power density up to 107 mW cm–2, surpassing most catalysis-battery hybrid systems. As a proof-of-concept, we demonstrate that this battery produces 1 kg furoic acid with 0.78 kWh electricity output, and yields 0.62 kg furfuryl alcohol when 1 kWh electricity is stored. This work may shed light on the design of rechargeable battery with value-added functionality such as chemicals production.