An Areal‐Energy Standard to Validate Air‐Breathing Electrodes for Rechargeable Zinc–Air Batteries
Abstract
Rechargeable zinc–air batteries may become safe, sustainable, low‐cost, and energy‐dense alternatives to Li‐ion batteries for many applications, but problems associated with today's air‐breathing electrodes limit zinc–air performance. To overcome this challenge, researchers have investigated hundreds of air‐breathing electrode variations over the last decade. Unfortunately, the efficacy of these variations remains ambiguous due to nonstandardized cycling protocols that map to areal‐energy values spanning five orders of magnitude. To compete with Li‐ion batteries, researchers should cycle zinc–air cells at 35 mWh cmgeo−2, but only 8, of the 100 publications reviewed here, breach this threshold. Once the community cycles zinc–air cells at the proposed areal energy and better understands failure mechanisms, lab‐scale results will translate to practical advancements.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 22, 2020
- Source ID
- 10.1002/aenm.202001287
Entities
People
- Brandon J Hopkins
- Christopher N Chervin
- Debra R. Rolison
- Jeffrey W Long
- Joseph F Parker
Organizations
- National Academies of Sciences, Engineering, and Medicine
- Office of Naval Research
- United States Naval Research Laboratory