Reversible Chlorite Anion/Chlorine Dioxide Redox Couple for Low-Cost Energy Storage

作者：Merrill K. Chiang, Liang Su, Kailash Raman, Yet‐Ming Chiang, William H. Woodford · 发表于：The Journal of Physical Chemistry C · 年份：2023 · DOI：10.1021/acs.jpcc.2c08136 · 被引用次数：7 · 研究领域：Advanced battery technologies research、Advanced Battery Materials and Technologies、Thermal Expansion and Ionic Conductivity

High Resolution Image Download MS PowerPoint Slide The ClO 2 – /ClO 2 electrochemical reaction is shown to be highly reversible in acidic, near-neutral, and alkaline electrolytes while using low-cost carbon electrodes. Its equilibrium potential (0.954 V vs SHE) is pH-independent and enables high aqueous cell voltages of 1.38–2.15 V when used as a positive electrode with negative electrodes such as Zn, Fe, or S. This anion redox couple may enable low-cost aqueous rechargeable batteries free of resource-constrained metals, here demonstrated in prototype Zn–NaClO 2 full cells. The rapid reaction kinetics and stability of the ClO 2 phase at low temperatures also suggest that chlorite-based batteries may be favorable for applications in cold environments.