Engineering topics

Stickle, William

Publications and source records attributed to Stickle, William.

3 records

DOE OSTI2023

Li 2 MnO 3 : A Catalyst for a Liquid Cl 2 Electrode in Low‐Temperature Aqueous Batteries

Abstract Li 2 MnO 3 has been contemplated as a high‐capacity cathode candidate for Li‐ion batteries; however, it evolves oxygen during battery charging under ambient conditions, which hinders a reversible reaction. However, it is unclear if this irreversible process still holds under subambient conditions. Here, the low‐temperature electrochemical properties of Li 2 MnO 3 in an aqueous LiCl electrolyte are evaluated and a reversible discharge capacity of 302 mAh g −1 at a potential of 1.0 V versus Ag/AgCl at −78 °C with good rate capability and stable cycling performance, in sharp contrast to the findings in a typical Li 2 MnO 3 cell cycled at room temperature, is observed. However, the results reveal that the capacity does not originate from the reversible oxygen oxidation in Li 2 MnO 3 but the reversible Cl 2 (l)/Cl − (aq.) redox from the electrolyte. The results demonstrate the good catalytic properties of Li 2 MnO 3 to promote the Cl 2 /Cl − redox at low temperatures.

Sui, Yiming↗

DOE OSTI2022

From Copper to Basic Copper Carbonate: A Reversible Conversion Cathode in Aqueous Anion Batteries

Abstract Dual‐ion batteries that use anions and cations as charge carriers represent a promising energy‐storage technology. However, an uncharted area is to explore transition metals as electrodes to host carbonate in conversion reactions. Here we report the reversible conversion reaction from copper to Cu 2 CO 3 (OH) 2 , where the copper electrode comprising K 2 CO 3 and KOH solid is self‐sufficient with anion‐charge carriers. This electrode dissociates and associates K + ions during battery charge and discharge. The copper active mass and the anion‐bearing cathode exhibit a reversible capacity of 664 mAh g −1 and 299 mAh g −1 , respectively, and relatively stable cycling in a saturated mixture electrolyte of K 2 CO 3 and KOH. The results open an avenue to use carbonate as a charge carrier for batteries to serve for the consumption and storage of CO 2 .

Gallagher, Trenton C.↗

DOE OSTI2022

From Copper to Basic Copper Carbonate: A Reversible Conversion Cathode in Aqueous Anion Batteries

Dual-ion batteries that use anions and cations as charge carriers represent a promising energy-storage technology. However, an uncharted area is to explore transition metals as electrodes to host carbonate in conversion reactions. Here we report the reversible conversion reaction from copper to Cu 2 CO 3 (OH) 2 , where the copper electrode comprising K 2 CO 3 and KOH solid is self-sufficient with anion-charge carriers. This electrode dissociates and associates K + ions during battery charge and discharge. The copper active mass and the anion-bearing cathode exhibit a reversible capacity of 664 mAh g –1 and 299 mAh g –1 , respectively, and relatively stable cycling in a saturated mixture electrolyte of K 2 CO 3 and KOH. Finally, the results open an avenue to use carbonate as a charge carrier for batteries to serve for the consumption and storage of CO 2 .

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗