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Zhongxi Zhao et al published their article in Journal of The Electrochemical Society
Revealing the effects of structure design and operating protocols on the electrochemical performance of rechargeable Zn-air batteries
This work combines experiments and simulations to systematically study the influence of the structural design and operating protocol of the rechargeable zinc-air battery on the electrochemical performance of the battery. This work provides guidance for the transition from material-level design to battery-level design, and promotes the practicality and commercialization of metal-air batteries.
October 2021

Xu Xiao et al published their article in ACS Applied Energy Materials
Ultrafine Co-Doped NiO Nanoparticles Decorated on Carbon Nanotubes Improving the Electrochemical Performance and Cycling Stability of Li−CO2 Batteries
Inspired by the concept of high nickel and low cobalt content in the electrode material, ultrafine Co0.1Ni0.9Ox nanoparticles decorated on carbon nanotubes (Co0.1Ni0.9Ox/CNT) are first developed in this work. Through various characterization techniques, the effects of doping Co2+ cations on the properties and electrochemical performance are systematically studied. The results enlighten new ideas of fabricating high-performance and cost-effective electrode materials for prolonging the cycling life of Li-CO2 batteries toward practical applications
September 2021

Ziqi Chen et al published their article in Journal of Energy Storage
Cost evaluation and sensitivity analysis of the alkaline zinc-iron flow battery system for large-scale energy storage applications
A cost model for a 0.1 MW/0.8 MWh alkaline zinc-iron flow battery system is presented, and a capital cost under the U.S. Department of Energy’s target cost of 150 $ per kWh is achieved. Besides, the effects of electrode geometry, operating conditions, and membrane types on the system cost are investigated. This work provides an integrated estimation for the zinc-iron flow battery system, demonstrating its tremendous potential for grid-level energy storage applications.
September 2021

Yanyi Ma et al published their article in Energy & Fuels
Synthesis of Ultrasmall NiCo2O4 Nanoparticle-Decorated N-Doped Graphene Nanosheets as an Effective Catalyst for Zn–Air Batteries
In this work, NiCo2O4 nanoparticle-decorated N-doped graphene nanosheet has been fabricated using an effortless hydrothermal process, of which the N-doped graphene nanosheets fabricated by a novel non-thermal arc plasma method possess an extremely large specific surface area and small dimensions. The Zn-air battery with the catalyst exhibited excellent energy efficiency and cycling stability.
August 2021

Yi He et al published their article in Chemical Engineering Journal
In-situ observation of the gas evolution process on the air electrode of Zn-air batteries during charging
An in-depth study of the gas evolution process on the air electrode was carried out by in-situ characterization. The results show that the charging process can be divided into three typical stages, and at lower current densities and extents of discharge/charge, the air electrode can always maintain a "self-cleaning" state to be free of bubbles. This work provides an understanding of the charging behavior on the air electrode, promoting the practical development of metal-air batteries.
June 2021
Wentao Yu et al published their article in Journal of Energy Storage
Elucidating the mechanism of discharge performance improvement in zinc-air flow batteries: A combination of experimental and modeling investigations
This work is the first one combining electrochemical characterization and numerical analysis to unravel the performance improvement of zinc-air flow batteries, which can also guide further design and optimization of this promising technology.
June 2021
Yanyi Ma et al published their article in Electrochimica Acta
Investigation on the electrochemical performance of hybrid zinc batteries through numerical analysis
This work developed the mathematical model of the charge-discharge process of a hybrid zinc battery. The effects of discharge depth, reaction interfaces, and active material degradation on energy efficiency are investigated through numerical analysis. This work is favorable for the design of interfaces and the selection of operating conditions, and guides the performance improvement of hybrid zinc batteries.
February 2021

Xu Xiao et al published their article in Energy & Fuels
Investigation on the Strategies for Discharge Capacity Improvement of Aprotic Li-CO 2 Batteries
To achieve a high-capacity battery, parameter sensitivity analysis is conducted. The initial porosity of the cathode is found to the most determining factor on the specific capacity. To this end, various cathode structures are designed and evaluated. Among these designs, the frustum conical porous cathode can lead to the largest capacity improvement of over 60%, demonstrating the feasibility of improving the capacity through structure design.
November 2020

Wenxu Shang et al published their article in Journal of Power Sources
Unravel the influences of Ni substitution on Co-based electrodes for rechargeable alkaline Zn–Co batteries
This study aims at improving the electrochemical performance of the battery via substituting Ni on the Co3O4 electrode. A novel multiple self-assembled nanowire-nanosheet structure is constructed. More importantly, the capacity decay mechanism is proposed as the decreased low valence species, microstructure collapse, and irreversible phase transition with an increase of the Ni substitution ratio.
November 2020

Ziqi Chen et al published their article in Chemical Engineering Journal
Mathematical modeling and numerical analysis of alkaline zinc-iron flow batteries for energy storage applications
A transient and two-dimensional mathematical model of zinc-iron flow batteries is established to study the influences of electrolyte flow rate and electrode geometry towards the electrochemical performance. The results demonstrate that a high flow rate, high electrode thickness, and porosity are favorable for battery performance. This work provides a comprehensive strategy allowing for the improvement on the practical design of zinc-iron flow batteries.
August 2020

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2019-10-30