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首页> 外文期刊>Physical chemistry chemical physics: PCCP >A high-performance electrochemical supercapacitor based on a polyaniline/reduced graphene oxide electrode and a copper(II) ion active electrolyte
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A high-performance electrochemical supercapacitor based on a polyaniline/reduced graphene oxide electrode and a copper(II) ion active electrolyte

机译：基于聚苯胺/缩小的石墨烯电极和铜（II）离子活性电解质的高性能电化学超级电容器

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摘要

Active electrolyte enhanced supercapacitors (AEESCs) have received increasing attention because of their large specific capacitance and easy fabrication process. The better matching between the active electrolyte and the counter electrode and the slow self-discharge rate are the challenges of this type of supercapacitor. In this paper, a novel AEESC with polyaniline/reduced graphene oxide hydrogel (PANI/RGOHG) as the anode and Cu(II) ions as the cathodic active electrolyte is constructed. Experimental results demonstrate that the electrode potentials of PANI and Cu(II) can match perfectly, thus the device has a wide working voltage range. Because of the large specific capacitance of both PANI and Cu(II), a high average specific capacitance of a single electrode of 1120 F g(-1) at 2.6 A g(-1) is achieved. Meanwhile, self-discharge is also suppressed because the reduction product of Cu(II) is immobilized on the electrode. These results demonstrate that the performance of AEESCs strongly depends on the choice of a suitable electrode material, and also reveal that Cu(II) is a promising cathodic active electrolyte for AEESCs.
机译：由于其具有大的特定电容和易于制造工艺，有源电解质增强的超级电容器（AEESCS）受到了越来越长的关注。主动电解质和对电极之间的较好匹配和缓慢的自放电率是这种超级电容器的挑战。本文构建了一种具有聚酰氯/除石墨烯氧化物水凝胶（PANI / RgoHg）的新型AESC作为阴极活性电解质的阳极和Cu（II）离子。实验结果表明，PANI和CU（II）的电极电位可以完全匹配，因此该装置具有宽的工作电压范围。由于PANI和Cu（II）的较大的比电容，实现了1120 f G（-1）的单个电极的高平均特异性电容在2.6Ag（-1）。同时，还抑制了自放电，因为Cu（II）的还原产物固定在电极上。这些结果表明，AEESCS的性能强烈取决于合适的电极材料的选择，并且还揭示了Cu（II）是用于AEESCS的有希望的阴极活性电解质。

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