用于超级电容器的高温螺-(1,1′)-联吡咯烷四氟硼酸盐基有机电解质

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Theoretical and Experimental Chemistry Pub Date : 2024-10-31 DOI:10.1007/s11237-024-09816-6

N. G. Stryzhakova, S. O. Zelinskyi, S. G. Kozachkov, Y. A. Maletin

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引用次数: 0

摘要

在超级电容器中研究了基于不同溶剂（碳酸丙烯酯、γ-丁内酯、磺烷和苯甲腈）的高沸点有机电解质。循环伏安数据、电容、内阻与电压的关系以及耐久性测试表明，螺-(1,1′)-联吡咯烷四氟硼酸盐（SBP-BF4）在苯甲腈中的溶液是电压范围约为 2.5 V、温度为 100-110°C 的最可靠电解质之一。在如此苛刻的条件下，苯腈具有很高的电化学稳定性，这是因为电极表面没有 SEI 膜形成过程，在电压升高时不会导致明显的内阻增加和容量降低。

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High-Temperature Spiro-(1,1′)-Bipyrrolidinium Tetrafluoroborate-Based Organic Electrolytes for Supercapacitors

Organic electrolytes based on different solvents (propylene carbonate, γ-butyrolactone, sulfolane, and benzonitrile) with high boiling points have been studied in supercapacitors. The cyclic voltammetry data, dependence of capacitance, internal resistance on voltage, and endurance tests indicate that a solution of spiro-(1,1′)-bipyrrolidinium tetrafluoroborate (SBP-BF4) in benzonitrile is one of the most reliable electrolytes in a voltage range of about 2.5 V up to temperature of 100-110°C . The high electrochemical stability of benzonitrile under such harsh conditions can be explained by the absence of an SEI film formation process on the electrode surface that doesn’t cause a noticeable internal resistance increase and capacity decrease when voltage is increased.

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来源期刊

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.