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Article
Metallurgy & Metallurgical Engineering
Pengyu Zhao et al.
Summary: The present study proposes mathematical models to elucidate the impact of alloying on corrosion of magnesium alloys in both film-free and film-covered conditions. These models are applicable in explaining the barrier effect of cathodes and the similar Hall-Petch relationship between corrosion rates and grain size. The slope of corrosion rates versus alloying content is determined by the dissolution ability of the film-free substrate and the hindering effects of the corrosion product film. The study establishes a design strategy for corrosion-resistant magnesium alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Hu Fu et al.
Summary: Modified carbon felt (CF) electrode (Ar-GCF) was fabricated by coating defect-rich graphene through chemical vapor deposition (CVD) and subsequent Ar plasma treatment for vanadium redox flow batteries (VRFB). The defect-rich graphene skin on Ar-GCF electrode exposed a large number of highly active graphene edges and provided abundant oxygen-containing functional groups, enhancing the electronic conductivity and redox reaction rate of VO2+/VO2+. Compared to unmodified CF electrode, VRFB with Ar-GCF electrode exhibited an improved energy efficiency (EE) by 7.10% and excellent stability with a slight increase in charge transfer resistance (Rct) after 800 cycles.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Zhiquan Huang et al.
Summary: This article systematically studies the corrosion and discharge behaviors of AZ91 magnesium alloy after hot rolling with different deformations (0%, 20%, 30%, and 40%). The results show that the corrosion resistance and discharge activity of AZ91 are closely related to the fragmentation of the second phase, the distribution of the second phase at the grain boundary, and the increase of the grain boundary after hot rolling.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Ridge M. Bachman et al.
Summary: This paper focuses on the role of carbon electrodes in vanadium redox flow batteries (VRFB) and uses density functional theory to analyze the chemically and electrocatalytically active sites. The results reveal the importance of carbene-type edge carbon atoms and the potential inhibitory effects of phenolic or carboxyl groups on the redox process.
Article
Chemistry, Physical
Danya Huang et al.
Summary: A high-energy-capacity Mg-air battery has been successfully developed using magnetron-sputtered Mg50Al50 and Mg30Al70 anodes in a traditional NaCl electrolyte, reaching record-breaking energy capacities. The superior performance of this new battery is attributed to the suppression of hydrogen evolution without inhibiting the anode's discharge process.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Xingrui Chen et al.
Summary: This study investigated the use of heat treatment to improve the battery performance of cast Mg-6Zn and Mg-8Al anodes for primary Mg-air batteries. The results showed that heat-treated anodes had higher discharge voltage and smoother exfoliation of discharge products, leading to improved discharge capacity and anodic efficiency. Heat treatment also suppressed the anodic hydrogen reaction and dissolved harmful large-sized precipitates.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Changwei Gong et al.
Summary: The corrosion behavior and discharge performance of extruded Mg-xZn-1Ca alloys, used as anodes for primary Mg-air batteries, were investigated. Results showed that the grain size changed with the increase in Zn content, and so did the type and percentage of the second phases. Among the four alloys, the ZX21 alloy had the best corrosion and discharge performances.
Article
Materials Science, Multidisciplinary
Huikun Liu et al.
Summary: In this study, Mg-3In-xCa alloys were fabricated and the optimal content of Ca (x) was determined for designing high-performance Mg-air batteries. The selected Mg-3In-3Ca alloy exhibited significantly improved battery performance compared to pure Mg-air battery. The synergistic effects of In and Ca on promoting electrode properties were evaluated in detail, providing insights for future research in this field.
Article
Energy & Fuels
Sadegh Aberoumand et al.
Summary: This paper investigates the electrochemical performance of a newly prepared reduced graphene oxide (rGO) nanofluidic vanadium electrolyte for Vanadium Redox Flow Batteries (VRFB). The study finds that the use of rGO nanofluid can enhance the performance of both electrode and electrolyte in the battery. The results show that increasing the concentration of rGO improves the electrochemical performance of the vanadium electrolyte, with approximately 15% to 20% improvements in peak potential separation and current density rates.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Qi Zou et al.
Summary: In this study, Ba micro-alloying was used to enhance the anode properties of Mg-6Al alloy in the Mg-air primary battery. Ba micro-alloying improved corrosion resistance and increased discharge capacity and anode efficiency. The benefits of Ba micro-alloying include grain refinement, inhibition of hydrogen evolution reaction, and improved hydrogen absorption capacity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Electrochemistry
Jinchao Zou et al.
Summary: The VW83 alloy showed outstanding performance as an anode material for Mg-air batteries, attributed to the presence of Mg5Gd phase enhancing discharge activity and facilitating self-peeling of discharge products.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Fanglei Tong et al.
Summary: This work studies the properties of magnesium alloy-air batteries with solution-treated alloys and finds that the addition of zinc and tin can alleviate the preferred corrosion during discharge. Solution-treated Mg-2 wt % Zn-3 wt % Sn alloy anodes demonstrate excellent battery performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Bingjie Ma et al.
Summary: Magnesium alloys are promising anode materials for energy storage devices, especially for Mg-air batteries. This study investigates the influence of La content on the microstructure and electrochemical performance of Mg-xLa alloys. The addition of 5 wt% La significantly improves corrosion resistance and discharge activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Qingchun Zhu et al.
Summary: The authors have developed a high-strength magnesium alloy with significantly improved mechanical properties and corrosion resistance. The alloy features a low corrosion rate, high yield strength, and moderate tensile elongation, making it competitive compared to other magnesium alloys. The development of a thin and dense protective film and refinement of grains contribute to the high strength and good ductility of the alloy. These findings are expected to inspire the design of next-generation high-performance magnesium alloys.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Bo Xiao et al.
Summary: Magnesium-air battery with a novel Mg64Zn36 alloy anode has achieved a high discharge specific capacity and outstanding efficiency, breaking efficiency records among reported Mg anodes. The high efficiency is attributed to inhibiting hydrogen evolution by Zn alloying, passivating the Mg matrix, and converting intermediate ion Mg+ electrochemically. Uniform discharging products due to the homogeneous microstructure of Mg64Zn36 also contribute to the high efficiency. This design may open a new avenue for the development of Mg-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Metallurgy & Metallurgical Engineering
Fu-yong Cao et al.
Summary: Heat treatment significantly reduces the corrosion rate of Mg5Gd alloys, resulting in more uniform and shallow corrosion, and the precipitation of nano-sized Cd-containing particles does not cause apparent micro-galvanic corrosion.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Multidisciplinary
Min Deng et al.
Summary: Highly corrosion-resistant magnesium can be achieved through calcium micro-alloying, with significantly lower corrosion rates than ultra-high-purity magnesium and all reported magnesium alloys. This technology shows great potential for developing advanced magnesium-based materials for diverse applications, thanks to its environmental friendliness and economic viability.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Physical
Xingrui Chen et al.
JOURNAL OF POWER SOURCES
(2020)
Article
Chemistry, Physical
Shi-ming Cheng et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Bo Xiao et al.
MATERIALS & DESIGN
(2020)
Article
Electrochemistry
Xiong-Jie Gu et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Materials Science, Multidisciplinary
Fuyong Cao et al.
Article
Metallurgy & Metallurgical Engineering
Yan Feng et al.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2018)
Article
Electrochemistry
Shaoqian Yuan et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2016)
Article
Materials Science, Multidisciplinary
Fuyong Cao et al.
Article
Electrochemistry
M. P. Brady et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2015)
Article
Materials Science, Multidisciplinary
Zhiming Shi et al.
Article
Chemistry, Physical
Yibin Ma et al.
JOURNAL OF POWER SOURCES
(2011)
