A high-capacity and long-life aqueous rechargeable zinc battery using a metal oxide intercalation cathode
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TLDR
In this article, a vanadium oxide bronze was used as the positive electrode for a Zn cell with reversible intercalation of Zn ions in a layered Zn0.25V2O5⋅nH2O-based positive electrode.Abstract:
Although non-aqueous Li-ion batteries possess significantly higher energy density than their aqueous counterparts, the latter can be more feasible for grid-scale applications when cost, safety and cycle life are taken into consideration. Moreover, aqueous Zn-ion batteries have an energy storage advantage over alkali-based batteries as they can employ Zn metal as the negative electrode, dramatically increasing energy density. However, their development is plagued by a limited choice of positive electrodes, which often show poor rate capability and inadequate cycle life. Here we report a vanadium oxide bronze pillared by interlayer Zn2+ ions and water (Zn0.25V2O5⋅nH2O), as the positive electrode for a Zn cell. A reversible Zn2+ ion (de)intercalation storage process at fast rates, with more than one Zn2+ per formula unit (a capacity up to 300 mAh g−1), is characterized. The Zn cell offers an energy density of ∼450 Wh l−1 and exhibits a capacity retention of more than 80% over 1,000 cycles, with no dendrite formation at the Zn electrode. High-performing positive electrode materials are crucial for the development of aqueous Zn-ion batteries. Here the authors report a battery based on reversible intercalation of Zn ions in a layered Zn0.25V2O5⋅nH2O-based positive electrode, which exhibits high-capacity and long-term cycling stability.read more
Citations
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Highly reversible zinc metal anode for aqueous batteries.
Fei Wang,Fei Wang,Oleg Borodin,Tao Gao,Xiulin Fan,Wei Sun,Fudong Han,Antonio Faraone,Joseph A. Dura,Kang Xu,Chunsheng Wang +10 more
TL;DR: This work demonstrates that an aqueous electrolyte based on Zn and lithium salts at high concentrations is a very effective way to address irreversibility issues and brings unprecedented flexibility and reversibility to Zn batteries.
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Recent Advances in Zn-Ion Batteries
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Recent Advances in Aqueous Zinc-Ion Batteries
TL;DR: In this paper, a review of recent advances in rechargeable aqueous zinc-ion batteries (ZIBs) is presented, highlighting the design of a highly reversible Zn anode, optimization of the electrolyte, and a wide range of cathode materials and their energy storage mechanisms.
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Zn/MnO2 Battery Chemistry With H+ and Zn2+ Coinsertion
Wei Sun,Fei Wang,Singyuk Hou,Chongyin Yang,Xiulin Fan,Zhaohui Ma,Tao Gao,Fudong Han,Renzong Hu,Min Zhu,Chunsheng Wang +10 more
TL;DR: Electrochemical and structural analysis identify that the MnO2 cathode experience a consequent H+ and Zn2+ insertion/extraction process with high reversibility and cycling stability, which is the first report on rechargeable aqueous batteries with a consequents ion-insertion reaction mechanism.
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Rechargeable aqueous zinc-manganese dioxide batteries with high energy and power densities
Ning Zhang,Fangyi Cheng,Junxiang Liu,Liubin Wang,Xinghui Long,Xiaosong Liu,Fujun Li,Jun Chen +7 more
TL;DR: A high-performance rechargeable zinc-manganese dioxide system with an aqueous mild-acidic zinc triflate electrolyte believed to be promising for large-scale energy storage applications.
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