Efficient electricity storage with a battolyser, an integrated Ni–Fe battery and electrolyser

Abstract

A battolyser charges, generates hydrogen, or instantaneously discharges, enabling a remarkably durable, efficient, flexible and switchable electricity storage and conversion.

Mesoporous Fe3O4@C nanoarrays as high-performance anode for rechargeable Ni/Fe battery

“…This phenomenon is also confirmed by the asymmetric CV curves in Fig. 5c at low scan rate, which is commonly seen in aqueous batteries [28]. The specific capacity calculated by the discharge curves is 162.8 mA h g −1 when the current density is 0.5 A g −1 .…”

Rational Construction of Self‐Standing Sulfur‐Doped Fe2O3 Anodes with Promoted Energy Storage Capability for Wearable Aqueous Rechargeable NiCo‐Fe Batteries

“…[ 1–34 ] Among various aqueous rechargeable batteries, aqueous secondary Ni‐Fe batteries with the abundant constituent elements, low cost, and ultra‐flat discharge plateau have attracted widespread attention. [ 35–40 ] Although a significant progress has been achieved for Ni‐based cathode materials, the lack of high‐capacity Fe‐based anode materials remains a stumbling block preventing further improvements of the energy density of aqueous rechargeable Ni‐Fe batteries. Moreover, with the ever‐growing consumer usage of portable and wearable electronics, small, flexible, and lightweight fiber‐shaped Ni‐Fe batteries are regarded as promising energy supply devices.…”

Tuning Redox Active Polyoxometalates for Efficient Electron‐Coupled Proton‐Buffer‐Mediated Water Splitting

“…decoupled the hydrogen and oxygen production system in a membrane‐free electrolyser based on the reversible solid‐state Ni(OH) 2 and polytriphenylamine redox mediator . Integrated battery‐electrolysers have also been constructed to decouple hydrogen production driven by the electrochemical energy storage system, such as an all‐vanadium dual circuit redox flow battery or a nickel‐iron battery . Furthermore, such hydrogen‐mediated redox species also show potential applications in high‐purity H 2 storage and generation on demand.…”

“…[8,9] Integrated battery-electrolysers have also been constructed to decouple hydrogen production drivenb yt he electrochemical energys torage system, such as an all-vanadiumd ual circuit redox flow battery or an ickel-iron battery. [10,11] Furthermore, such hydrogen-mediated redox species also show potential applicationsi nh igh-purity H 2 storage and generation on demand. Hydrogenc ould be spontaneously evolved from the reduced-ECPB on ac onventionalHER-catalyst if its redox potential is more negative than the HER onset potentialo ft he catalyst.…”