New & Alternative Chemistries

Reversible Multi-Electron Transfer I-/IO3- Cathode Enabled By Hetero-Halogen For Ultra-High Energy Density Aqueous Batteries Xie et al. explored a new aqueous battery system based on halide ions. Although still in the early stages of development, they achieved:

Source: Xie et al., Nat. Ener 2024

High Energy Density: Over 1200 Wh L−1 (at catholyte level) using a high hetero-halogen electrolyte and multi-electron transfer in the I2/IO3− couple.

Efficient Performance: Maintained 72% energy efficiency at a current density of 120 mA cm−2.

Long Cycle Life: Demonstrated over 1000 cycles with improved stability

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