A room-temperature refuelable lithium, iodine and air battery

Abstract

We demonstrate a new refuelable lithium cell using lithium solvated electron solution (Li-SES) as anolyte and iodine solutions as catholyte. This cell shows a high OCV (~3 V). Unlike conventional rechargeable Li batteries, this kind of cell can be re-fueled in several minutes by replacing the spent liquids. We also show for the first time, that Li-SES/I2 cells which operate at room temperature, can be prepared in a fully discharged state (~0 V OCV) for safe handling, transportation and storage. Li-SES and iodine are then electrochemically generated during charge as is confirmed by UV-VIS and a qualitative test. We have also conducted proof-of-concept tests for an “indirect lithium-air” cell in which iodine is reduced at the cathode and subsequently is catalytically re-oxidized by oxygen dissolved in the catholyte.

Electrical and electrochemical properties of triphenylene based lithium solvated electron solutions

“…The open-circuit potentials (E) vs temperature (T) profiles were obtained using a Li/Ceramics electrolyte (Ohara, Japan)/Li SES half-cell configuration. The method for measuring E vs T is described in our previous work 3,4 .. It enables entropy and enthalpy changes to be determined for the half cell Modelling Density functional theory (DFT) based calculations with the range-separated functional based on the M06 6 which includes the van der Waals force have been performed with the 6-31g (d,p) basis set to optimize the geometries of the adducts and calculate the binding energies of various structures between lithium atoms and anthracene molecules.…”

“…Li SES have potential application as liquid based electrodes in novel secondary batteries. 3,4 . In these batteries, it is desirable to obtain a high Li:PAH ratio due to increase of the energy storage capacity.…”

Silica Coated ZnFe2O4 Nanoparticles as Cathode Catalysts for Rechargeable Lithium‐Air Batteries

“…7) to form peroxides and finally peroxides react with Li + cataion to form Li 2 O 2 (Eqn. 8) . In this respect, the use of iodine increases the decomposition of Li 2 O 2 and thus cycling performance of non‐aquesous LABs.…”

Electrochemical Properties of Anthracene-Based Lithium-Solvated Electron Solutions

“…From the temperature dependence of OCV, the entropy and enthalpy changes to be determined for the half-cell could be determined. 28…”

“…The OCV was measured at the temperature range of 11–26 °C. From the temperature dependence of OCV, the entropy and enthalpy changes to be determined for the half-cell could be determined …”