文章基本信息

标题：Preparing two-dimensional microporous carbon from Pistachio nutshell with high areal capacitance as supercapacitor materials
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作者：Jiandong Xu ; Qiuming Gao ; Yunlu Zhang 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：4
期号：1
DOI：10.1038/srep05545
语种：English
出版社：Springer Nature
摘要：Two-dimensional (2D) porous carbon AC-SPN-3 possessing of amazing high micropore volume ratio of 83% and large surface area of about 1069 m² g⁻¹ is high-yield obtained by pyrolysis of natural waste Pistachio nutshells with KOH activation. The AC-SPN-3 has a curved 2D lamellar morphology with the thickness of each slice about 200 nm. The porous carbon is consists of highly interconnected uniform pores with the median pore diameter of about 0.76 nm, which could potentially improve the performance by maximizing the electrode surface area accessible to the typical electrolyte ions (such as TEA⁺, diameter = ~0.68 nm). Electrochemical analyses show that AC-SPN-3 has significantly large areal capacitance of 29.3/20.1 μF cm⁻² and high energy density of 10/39 Wh kg⁻¹ at power of 52/286 kW kg⁻¹ in 6 M KOH aqueous electrolyte and 1 M TEABF₄ in EC-DEC (1:1) organic electrolyte system, respectively.