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High-Current Capable and Non-Flammable Protic Organic Electrolyte for Rechargeable Zn Batteries |
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| Authors: | Bareera Raza Yu Zhang Jiahang Chen Umair Shamraiz Yang Zhang Ahmad Naveed Prof Jiulin Wang |
| Institution: | 1. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China;2. State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046 Xinjiang, China
Contribution: Investigation (supporting), Writing - review & editing (supporting);3. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China Contribution: Writing - review & editing (supporting);4. Department of Chemistry, Technical University Darmstadt, 64287 Darmstadt, Germany Contribution: Formal analysis (supporting), Software (supporting), Writing - review & editing (supporting);5. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China Contribution: Formal analysis (supporting), Methodology (supporting), Writing - review & editing (supporting);6. State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046 Xinjiang, China |
| Abstract: | Rechargeable Zinc batteries (RZBs) are considered a potent competitor for next-generation electrochemical devices, due to their multiple advantages. Nevertheless, traditional aqueous electrolytes may cause serious hazards to long-term battery cycling through fast capacity fading and poor Coulombic efficiency (CE), which happens due to complex reaction kinetics in aqueous systems. Herein, we proposed the novel adoption of the protic amide solvent, N-methyl formamide (NMF) as a Zinc battery electrolyte, which possesses a high dielectric constant and high flash point to promote fast kinetics and battery safety simultaneously. Dendrite-free and granular Zn deposition in Zn-NMF electrolyte assures ultra-long lifespan of 2000 h at 2.0 mA cm−2/2.0 mAh cm−2, high CE of 99.57 %, wide electrochemical window (≈3.43 V vs. Zn2+/Zn), and outstanding durability up to 10.0 mAh cm−2. This work sheds light on the efficient performance of the protic non-aqueous electrolyte, which will open new opportunities to promote safe and energy-dense RZBs. |
| Keywords: | Amide-Based Electrolyte Non-Flammability Zn Anode Zn-Ion Battery |