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- Title
Weakly Solvating Effect Spawning Reliable Interfacial Chemistry for Aqueous Zn/Na Hybrid Batteries.
- Authors
Yang, Yihan; Qu, Guangmeng; Wei, Hua; Wei, Zhiquan; Liu, Chao; Lin, Yilun; Li, Xinming; Han, Cuiping; Zhi, Chunyi; Li, Hongfei
- Abstract
The insufficient exploration of the interfacial chemistry of Zn anodes and electrolytes in an aqueous environment restricts the application potential of aqueous Zn batteries (AZBs). Herein, a durable anion‐derived solid electrolyte interface (SEI) with high ion conduction properties is constructed by designing an aqueous electrolyte with a weakly solvating effect to manipulate the solvation structure of metal ions (Zn2+/Na+). The constructed SEI significantly restrains the dendrite formation and occurrence of adverse reactions on the surface of the Zn anode, endowing the Zn metal anode with high reversibility of deposition/stripping and ultra‐long lifespan over 5000 h with an exceptional cumulative capacity of over 2.5 Ah cm−2. Significantly, the formation mechanism of the SEI, which is realized by the weakly solvating effect to promote the coordination between anions and metal ions (Zn2+/Na+), and the composition distribution of anion‐derived inorganic‐rich SEI, are clarified in detail. Furthermore, benefiting from the synergy of the elaborate SEI and the regulated electrolyte environment, the Zn//Prussian blue analogue (PBA) full battery can operate with a high voltage platform of 2.1 V and deliver 99.3% capacity retention after 5000 cycles.
- Subjects
AQUEOUS electrolytes; SOLID electrolytes; IONIC structure; HIGH voltages; METAL ions; KEGGIN anions
- Publication
Advanced Energy Materials, 2023, Vol 13, Issue 12, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.202203729