Modifying cell parameters to improve aqueous aluminum battery performance with water-in-salt electrolytes
Year: 2026
Type: article
Abstract: Aqueous aluminum batteries (AABs) have emerged as promising next generation batteries owing to their sustainability and high theoretical capacity. However, conventional aqueous electrolytes bring challenges, such as low voltage windows, and corrosion. Therefore, the new subclass of aqueous electrolytes, water-in-salt (WIS) electrolytes, are lately being considered. This study explores in detail aluminum/graphite (Al/G) cells utilizing WIS electrolytes. Parameters such as interelectrode distance, voltage range, and current density were investigated. The results revealed that cells with a 6 mm interelectrode distance, operating in the voltage range of 0.1–1.6 V at a current density of 0.5 Ag −1 , demonstrate the highest capacity (80 mAhg −1 ) in the stabilized cycle stage, compared with other configurations. • Al/graphite cell operation in a water-in-salt electrolyte was investigated and optimized. • The interelectrode distance significantly influenced the performance of the Al/graphite cell. • The cell within the voltage range of 0.1–1.6 V and a current density of 0.5 Ag −1 revealed the best cycling stability.
Source: Materials Letters
Institutions: Mid Sweden University, Montanuniversität Leoben
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,870
Award: G536334968
OpenAlex ID: W7135398394