深共晶溶剂
法拉第效率
电解质
石墨
电池(电)
溶剂
电化学
溶解
阳极
插层(化学)
化学工程
离子液体
阴极
无机化学
化学
共晶体系
材料科学
有机化学
催化作用
电极
功率(物理)
物理化学
工程类
物理
合金
量子力学
作者
Lu Kang,Qingning Li,Ketong Luo,Shengkui Zhong,Dongliang Yan
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-05-01
卷期号:11 (19): 7334-7343
被引量:2
标识
DOI:10.1021/acssuschemeng.2c07614
摘要
Nonaqueous rechargeable Al batteries (RABs) have attracted significant research interest due to the extremely abundant reserves, high theoretical capacities, and low-cost. However, the commonly used nonaqueous RAB ionic liquid (IL) electrolytes are highly air-sensitive and high-cost, which seriously limits their commercial application. Herein, AlCl3–guanidine hydrochloride (AlCl3–GdnHCl), a new low-cost and environmentally friendly deep eutectic solvent (DES) with only 1/40 of the cost of [EMIm]AlxCly is introduced into applications for nonaqueous RABs. The battery displays a discharge capacity of 128 mAh g–1 at 0.1 A g–1, which is significantly higher than that of 88 mAh g–1 in [EMIC]AlxCly electrolyte. It can reach 124.6 mAh g–1 at 1 A g–1 with the Coulombic efficiency of 99.5% for 1000 cycles. According to the mechanism studies, during the charge–discharge cycle, the fast deposition/dissolution reaction of Al took place at the anode side, while intercalation/deintercalation reaction of [AlCl2(Gdn)n]+ ions and chloroaluminate anions [AlxCly]− (i.e., Al2Cl7– and AlCl4–) occurred at the graphite cathode side. With such significant electrochemical behaviors, the AlCl3–GdnHCl DES possesses great potential for use in high-performance storage devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI