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Electrochemical performance of M CMB/（A C ＋ LiF ePO 4） lithium-ion capacitors

ISSN号：1002-087X
期刊名称：《电源技术》
时间：0
分类：G4[文化科学—教育学;文化科学—教育技术学]
作者机构：[1]School of Sciences, Tianjin University, Tianjin 300072, China, [2]Tianjin Key Laboratory of Fiber Modification and Functional Fiber, College of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300160, China, [3]Tianjin Lishen Battery Joint-Stock Co. Ltd, Tianjin 300384, China
相关基金：Supported by National Natural Science Foundation of China （No. 50902102 and No. 51172160）.

作者： PING LiNa[1], ZHENG JiaMing[1], SHI ZhiQiang[2], QI Jie[1], WANG ChengYang[1]

关键词：基于玉米的穗轴的激活的碳, 电极材料, 电的双层电容器, corncob-based activated carbon, electrode material, electric double-layer capacitor

中文摘要：

为了在碳上为材料调查扩大预告的处理的影响，组织，激活的碳(交流) 被 KOH 激活与 / 没有扩大预告的处理从玉米的穗轴准备，哪个基于在 77 K 的 N2 吸附等温线是坚定的结构性质。结果证明为玉米的穗轴的扩大预告的处理对有高表面区域的交流的准备有益。与扩大预告的处理(AC-1 ) 从玉米的穗轴导出的 AC 的特定的表面区域是 32.5% 比那大没有扩大预告的处理(AC-2 ) 。而且，在电的双层电容器(EDLC ) 探查基于玉米的穗轴的交流的潜在的申请，当装配 EDLC 的电极材料，和它的电气化学的表演被调查，准备交流被使用。结果显示 AC-1 的特定的电容是在 50 mA/g 的 276 F/g，它与 AC-2 (217 F/g ) 的相比增加 27% 。作为电极材料， AC-1 比 AC-2 介绍更好电气化学的表演，包括更高的电压维护比率和更低的漏电流。

英文摘要：

To investigate the influence of expansion pretreatment for materials on carbon structure, activated carbons （ACs） were prepared from corncob with/without expansion pretreatment by KOH activation, the structure properties of which were determined based on N2 adsorption isotherm at 77 K. The results show that the expansion pretreatment for corncobs is beneficial to the preparation of ACs with high surface area. The specific surface area of the AC derived from corncob with expansion pretreatment （AC-1） is 32.5% larger than that without expansion pretreatment （AC-2）. Furthermore, to probe the potential application of corncob-based ACs in electric double-layer capacitor （EDLC）, the prepared ACs were used as electrode materials to assemble EDLC, and its electrochemical performance was investi- gated. The results indicate that the specific capacitance of AC-I is 276 F/g at 50 mA/g, which increases by 27% com- pared with that of AC-2 （217 F/g）. As electrode materials, AC-1 presents a better electrochemical performance than AC-2, including a higher voltage maintenance ratio and a lower leakage current.

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