Ito, Kimihiko published the artcileOperando Br K-Edge Dispersive X-ray Absorption Fine Structure Analysis for Br-/Br3- Redox Mediator for Li-Air Batteries, Application In Synthesis of 143-24-8, the main research area is dispersive X ray absorption structure analysis bromine redox mediator; bromine redox mediator lithium air secondary battery capacity.
The behavior of Br-/Br3- redox mediator (RM), which has been shown to suppress charging overpotential in lithium-air batteries, has been detected for the first time using operando Br K-edge dispersive X-ray absorption fine structure. Br3- ions in the electrolyte increase monotonically after ∼ 30% charging, which indicates that a part of Br3- formed via the oxidation of Br- during charging does not oxidize Li2O2 as RM but gets accumulated in the cell. The accumulated Br3- is estimated at ∼ 20% of the total amount of charging. Consistent with this result, the O2 evolution efficiency gradually decreases from the initial 100% as the charging progresses, and CO2 is emitted at the end of the charging. The integrated amount of O2 evolution during charging accounts for ∼ 83% of the theor. two-electron reaction. All these results clearly show that the Br-/Br3- RM functions effectively at the beginning of charging but gradually loses its function as charging proceeds.
ACS Energy Letters published new progress about Battery anodes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application In Synthesis of 143-24-8.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem