Review on Cathode Stabilization by Electrolyte Engineering in Aqueous Batteries

The fading mechanisms of different kinds of state-of-the-art aqueous battery cathodes including manganese/vanadium-based material, chalcogen and halogen materials, Prussian blue analogues, as well as Ni(OH)₂ cathodes were summarized. Recent progresses on electrolyte engineering on the stability of cathode materials such as bulk electrolyte modification, electrolyte additives, water-in-salt electrolytes, and hydrogel electrolytes were systematically reviewed. The issues that should be concerned in future electrolyte design for highly state aqueous battery cathodes were proposed.