Journal Article10.1002/ADMA.201803181
A high-rate and stable quasi-solid-state zinc-ion battery with novel 2D layered zinc orthovanadate array
Dongliang Chao,Changrong Rose Zhu,Changrong Rose Zhu,Ming Song,Ming Song,Pei Liang,Xiao Zhang,Nguyen Huy Tiep,Haofei Zhao,John Wang,Rongming Wang,Hua Zhang,Hong Jin Fan +12 more
TL;DR: The first paradigm of a high-rate and ultrastable flexible quasi-solid-state zinc-ion battery is constructed from a novel 2D ultrathin layered zinc orthovanadate array cathode, a Zn array anode supported by a conductive porous graphene foam, and a gel electrolyte.
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Abstract: Zinc-ion batteries are under current research focus because of their uniqueness in low cost and high safety. However, it is still desirable to improve the rate performance by improving the Zn2+ (de)intercalation kinetics and long-cycle stability by eliminating the dendrite formation problem. Herein, the first paradigm of a high-rate and ultrastable flexible quasi-solid-state zinc-ion battery is constructed from a novel 2D ultrathin layered zinc orthovanadate array cathode, a Zn array anode supported by a conductive porous graphene foam, and a gel electrolyte. The nanoarray structure for both electrodes assures the high rate capability and alleviates the dendrite growth. The flexible Zn-ion battery has a depth of discharge of ≈100% for the cathode and 66% for the anode, and delivers an impressive high-rate of 50 C (discharge in 60 s), long-term durability of 2000 cycles at 20 C, and unprecedented energy density ≈115 Wh kg-1 , together with a peak power density ≈5.1 kW kg-1 (calculation includes masses of cathode, anode, and current collectors). First principles calculations and quantitative kinetics analysis show that the high-rate and stable properties are correlated with the 2D fast ion-migration pathways and the introduced intercalation pseudocapacitance.
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Citations
Zinc utilization rate in aqueous batteries: regulation of interfacial thermodynamics and kinetics
Zeyu Wang,Jiahao Chen,Zefang Yang,Yuhang Liu,Sirui Li,Wanhai Zhou,Min Wang,Dongyuan Zhao,Dongliang Chao +8 more
TL;DR: This study examines zinc utilization rate limitations in aqueous batteries, attributing them to interfacial thermodynamics and kinetics, and evaluates recent advances in electrolyte engineering, functionalization, and host design to modulate nucleation and deposition kinetics.
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Recent advances in vanadium-based materials for aqueous metal ion batteries: Design of morphology and crystal structure, evolution of mechanisms and electrochemical performance
TL;DR: In this article, the intercalation mechanisms of metal ions are introduced, and structural optimizations are highlighted, such as morphology designs, the introduction of oxygen vacancies, and regulation of lattice structures, aiming to increase the inter-calation space and structural stability of vanadium(V)-based materials.
Hydrogen Peroxide Tuned Morphology and Crystal Structure of Barium Vanadate-Based Nanostructures for Aqueous Zinc-Ion Storage Properties.
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