TY - JOUR
T1 - Precipitating Zinc-Polyethylenimine Complex for Long-Lasting Aqueous Zn-I Batteries
AU - Zhang, Kaiqiang
AU - Wu, Chao
AU - Wang, Luoya
AU - Ma, Changlong
AU - Kong, Pei
AU - Zhuang, Kun
AU - Ye, Jilei
AU - Wu, Yuping
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024
Y1 - 2024
N2 - Aqueous rechargeable Zn−I battery offers significant advantages for reliable and cost-effective energy storage applications. However, current aqueous Zn−I batteries still face challenges related to limited cycling performance. Herein, we introduce an innovative in-situ precipitated zinc-polyethylenimine (PEI-Zn2+) complex design. This approach leverages the complexing effect between Zn2+ cations from the aqueous electrolyte and the amino groups of PEI in the cathode, enhancing the performance of aqueous Zn−I batteries. The resulting insoluble PEI-Zn2+ complex immobilizes iodide species, facilitating efficient battery operation. This novel design enabled an aqueous Zn−I battery to achieve over 5000 cycles with 83.3 % capacity retention. Additionally, the battery demonstrated promising preliminary performance under practical conditions, including fluctuating charging, various states of charge, and integration with photovoltaic solar panels. This work provides new insights into the design of aqueous zinc batteries.
AB - Aqueous rechargeable Zn−I battery offers significant advantages for reliable and cost-effective energy storage applications. However, current aqueous Zn−I batteries still face challenges related to limited cycling performance. Herein, we introduce an innovative in-situ precipitated zinc-polyethylenimine (PEI-Zn2+) complex design. This approach leverages the complexing effect between Zn2+ cations from the aqueous electrolyte and the amino groups of PEI in the cathode, enhancing the performance of aqueous Zn−I batteries. The resulting insoluble PEI-Zn2+ complex immobilizes iodide species, facilitating efficient battery operation. This novel design enabled an aqueous Zn−I battery to achieve over 5000 cycles with 83.3 % capacity retention. Additionally, the battery demonstrated promising preliminary performance under practical conditions, including fluctuating charging, various states of charge, and integration with photovoltaic solar panels. This work provides new insights into the design of aqueous zinc batteries.
KW - Aqueous rechargeable Zn−I battery
KW - Long-lasting battery lifespan
KW - Multiple operating conditions
KW - PEI-Zn complex
UR - http://www.scopus.com/inward/record.url?scp=85211759667&partnerID=8YFLogxK
U2 - 10.1002/batt.202400578
DO - 10.1002/batt.202400578
M3 - 文章
AN - SCOPUS:85211759667
SN - 2566-6223
JO - Batteries and Supercaps
JF - Batteries and Supercaps
ER -
