Abstract

Aluminum ion batteries (AIBs) are considered, in principle, promising post-lithium-ion batteries, which are potential for using in grid-scale energy storage and electric vehicles, owing to the economic Al. The inflammable ionic liquid electrolyte endows stable plating and stripping of Al ions. A spotlighted research on cathode material has been preforming to obtain a high-performance cathode material that can match well with the prominent Al foil. However, one over-looked factor for the study of cathode materials is the cost and possibility of mass-production. With this key point in mind, we as the forerunner studied the CoS₂/carbon nanotubes (CNTs) composite cathode material composed of low cost and commercialized CoS₂ and multi-wall CNTs to promote the development of AIBs. Stable charge/discharge plateaus (at 1.2/0.9 V vs. AlCl₄⁻/Al) during cycling test were obtained for the CoS₂/CNTs product at a high current density of 1000 mA g⁻¹, with an extremely high Coulombic efficiency of 98% and reasonable electrochemical capacities. This report is expected to contribute more contribution in the development of cathode materials for rechargeable AIBs.

Graphic Abstract

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抽象的

原则上，铝离子电池（AIB）被认为是有前途的后锂离子电池，由于铝的经济性，铝离子电池有潜力用于电网规模的储能和电动汽车。易燃的离子液体电解质使铝离子具有稳定的镀层和剥离能力。已经对阴极材料进行了备受关注的研究，以期获得一种可以与突出的铝箔很好地匹配的高性能阴极材料。然而，研究阴极材料的一个被忽视的因素是成本和批量生产的可能性。考虑到这一关键点，我们作为先驱者研究了由低成本和商业化的CoS ₂组成的CoS ₂ /碳纳米管（CNTs）复合阴极材料和多壁碳纳米管以促进AIB的发展。稳定的充电/放电高原（1.2 / 0.9 V，相对于的AlCl ₄ ^- / Al）的过程中循环试验对于得到的CoS ₂ /碳纳米管产物在千毫安g的高电流密度^-1，具有非常高的库仑效率98％的电化学容量。预计该报告将为可再充电AIB的阴极材料的开发做出更多贡献。

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