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首页> 外文期刊>Journal of Wood Chemistry and Technology >Preparation of High-Performance Internal Tandem Electric Double-Layer Capacitors (IT-EDLCs) from Melt-Spun Lignin Fibers
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Preparation of High-Performance Internal Tandem Electric Double-Layer Capacitors (IT-EDLCs) from Melt-Spun Lignin Fibers

机译：用熔纺木质素纤维制备高性能内部串联双电层电容器（IT-EDLC）

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摘要

Activated carbon fibers (ACFs) with large surface area were easily prepared from melt-spun fibers of polyethylene glycol lignin (PEGL). To fabricate electric double-layer capacitors (EDLCs) with a wide potential window and a high energy density in an EDLC package, electrodes (mainly composed of ACFs) were internally laminated and connected in series, in parallel, or in a series/parallel combination. Such resultant EDLCs are termed internal tandem (IT) EDLCs. As expected, the potential window was expanded by the series connection, and the capacitance was increased by the parallel connection. As a result, the energy density in the parallel-connected EDLC was remarkably increased by 66% (16.6 Wh kg(-1)) compared with that of a single-cell EDLC. The EDLC with the combination connection showed both advantages. Thus, based on the package weight, the electrochemical performance of the EDLCs was remarkably improved by the IT-type lamination of electrodes.
机译：由聚乙二醇木质素（PEGL）的熔纺纤维可轻松制备大表面积的活性炭纤维（ACF）。为了在EDLC封装中制造具有宽电位窗口和高能量密度的双电层电容器（EDLC），内部层叠电极（主要由ACF组成）并串联，并联或串联/并联组合。这样得到的EDLC称为内部串联（IT）EDLC。如预期的那样，通过串联连接扩大了电位窗口，并且通过并联连接增加了电容。结果，与单电池EDLC相比，并联EDLC中的能量密度显着提高了66％（16.6 Wh kg（-1））。具有组合连接的EDLC表现出两个优点。因此，基于包装重量，通过电极的IT型层压显着改善了EDLC的电化学性能。

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