Constructing high-capacity and flexible aqueous zinc-ion batteries with air-recharging capability using organic cathodes

Chemically Self–Chargeable Batteries and Devices Beyond Energy Installation

“…Unlike the batteries converting mechanical force or light energies, the redox materials in the air-powered batteries are harnessing chemical energies via oxidation by oxygen in the ambient air. Recent researches demonstrated the utilization of active redox materials such as metal compounds, [12][13][14] redox small molecules [15][16][17] and polymers, [18][19][20] for self-chargeable energy installations and compact electrochromic devices.…”

Metal Phosphorous Chalcogenide: A Promising Material for Advanced Energy Storage Systems

“…It is worth noting that the battery assembled with FePS 3 electrodes exhibited fast charge and discharge characteristics without the need for solid electrolyte and conductive additives, suggesting that FePS 3 offers sufficient lithium ion and electron conduction pathways. [127][128][129][130] During the charge and discharge processes, a reversible redox reaction (FePS 3 + x Li + + x e − ⇄ Li x FePS 3 , 0 ≤ x ≤ 1.5) occurs, and the discharge voltage increases as the chemical state of iron and sulfide evolves.…”

High-Performance and Chemically Self-Charging Flexible Aqueous Zinc-Ion Batteries Based on Organic Cathodes with Zn2+ and H+ Storage

“…As is well-known, different from sunlight, air is everywhere, and it can be used anytime and anywhere as a cost-free energy resource because chemical energy of oxygen in air can be changed into electrical energy by redox reaction. , Thus, an effective way to build a self-charging power system is to combine the chemical energy of oxygen with a rechargeable battery. In recent years, chemically self-charging AZIBs via O 2 in air (also named as air-rechargeable AZIBs) have been developed, and they are still in their infancy. − For example, in 2020, Niu et al reported a chemically self-charging AZIB based on CaVO inorganic cathode, and the redox reaction between the discharged inorganic cathode (CaZn 3.6 VO) and O 2 is accompanied by the removal of Zn 2+ ions . Very recently, Niu et al also reported a chemically self-charging AZIB based on BQPH (benzo­[ i ]­benzo-[6,7]­quinoxalino­[2,3- a ]­benzo­[6,7]-quinoxalino­[2,3- c ]­phenazine-5,8,13,16,21,24-hexaone) organic cathode, in which the redox reaction between the discharged organic cathode and O 2 is accompanied by the removal of H + ions, but the two reported self-charging AZIBs display limited cycle stability (only four to five cycles).…”