Sustainable and cost-effective ternary electrolyte Et₃NHCl–AlCl₃–Mg(DEP)₂ for high-performance rechargeable magnesium batteries

Abstract

The need of the hour is the cost-effective and sustainable battery material for large-scale batteries to garner renewable energy with high-performance metal battery technology. Here, we report on high-performance and...

Manganese–carbon (Mn–C) interaction to host Al3+-ions in a β-MnO2–MWCNT composite cathode in rechargeable aluminium ion batteries

“…The electrolyte used for the studies was prepared with a slightly modified procedure 7 in a glove box filled with argon (make: Braun, inc., <1 ppm of water and oxygen). At room temperature, triethylamine hydrochloride (1 mol, 1 g) and anhydrous AlCl 3 (1.5 mol, 1.45 g) were mixed under constant stirring for 1–2 h to get a transparent light green-coloured liquid.…”

“…[3][4][5] AIBs have a gravimetric capacity of 2980 A h Kg À1 when compared with Li + /Li (3862 A h Kg À1 ) and Na + /Na (1166 A h Kg À1 ); this is due to the three electron Al 3+ /Al redox couple. 6,7 Besides its capacity, aluminium based batteries stand to be a promising option for building sustainable battery systems because of their natural abundance, low flammability, low reactivity, and higher stability. Being trivalent, aluminium can accept three electrons, which makes the process more formidable for the reversible binding of several cations at the electrode.…”

Interlayer Engineering of VS2 Nanosheets via In Situ Aniline Intercalative Polymerization toward Long-Cycling Magnesium-Ion Batteries

“…Rechargeable magnesium batteries (RMBs) based on Mg anodes have been considered as one of the potential alternatives to secondary batteries due to their high theoretical volumetric specific capacity (3833 mA h mL –3 ), rich natural abundance, low price, and dendrite-free deposition process. , However, RMBs still have no satisfactory practical application owing to several obstacles. First, highly polarized divalent Mg 2+ ions have strong Coulombic interactions with cathode materials, which usually leads to sluggish diffusion/insertion kinetics within the crystal lattices of cathode. − In addition, only a few electrolytes can meet high Coulombic efficiency for Mg plating/stripping and satisfying compatibility with existing electrode materials. − Therefore, the development of cathode materials capable to reversibly Mg 2+ storage with high capacity, fast kinetics, and outstanding cycling stability is still a great challenge. − Aurbach’s group first constructed the RMBs using Chevrel phase Mo 6 S 8 as top-performing cathode material in 2000, a milestone development in the field of RMBs. Although Chevrels are considerable for RMBs, their theory discharge capacity (128.8 mA h g –1 ) and low intercalation voltage (1.1 V vs Mg 2+ /Mg) drastically limit their energy density. , Subsequently, only a few cathode materials with gratifying capacity and cycling stability for RMBs have been developed, including transition metal oxides (V 2 O 5 , MnO 2 ), − olivine-phase MgFeSiO 4 , and layered transition-metal chalcogenides (TMCs, MoS 2 , TiS 2 , and WSe 2 ). − Among them, the metal oxides and polyanionic olivine are faced with sluggish kinetics and shaky cycling stability. , In comparison, TMCs exhibit enhanced mobility of Mg 2+ ions , owing to the weaker Coulombic attraction between the “soft” anionic lattices (S or Se) and guest Mg 2+ ions. − …”

An Assessment of Aluminum Electrodeposition from Aluminum Chloride/4-ethylpyridine Ionic Liquid at Ambient Temperature

“…Due to their excellent properties, aluminum and its alloys are important materials for a wide range of applications, especially for the rechargeable aluminum ion batteries being developed in recent years. 1,2 Therefore, production of Al by electrodeposition has long been an attractive subject. Electrodeposition of aluminum has to be conducted in aprotic electrolytes such as inorganic molten salts [3][4][5] and ionic liquids (ILs) [6][7][8][9] because the electrodeposition of aluminum from aqueous electrolytes is impossible due to the extremely negative reduction potential of Al in comparison with the electrolysis of water.…”