CN107658146A - 一种超级电容器用碱性电解质水溶液改性方法 - Google Patents

一种超级电容器用碱性电解质水溶液改性方法 Download PDF

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Publication number
CN107658146A
CN107658146A CN201710967782.XA CN201710967782A CN107658146A CN 107658146 A CN107658146 A CN 107658146A CN 201710967782 A CN201710967782 A CN 201710967782A CN 107658146 A CN107658146 A CN 107658146A
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ultracapacitor
aqueous alkaline
alkaline electrolyte
modifying
solution
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王凤勤
曹越超
肖文泰
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Tianjin Polytechnic University
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Tianjin Polytechnic University
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Priority to CN201710967782.XA priority Critical patent/CN107658146A/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/54—Electrolytes
    • H01G11/58—Liquid electrolytes
    • H01G11/60—Liquid electrolytes characterised by the solvent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

一种超级电容器用碱性电解质水溶液改性方法。本发明以Vulcan XC‑72活性炭为电极材料，通过在碱性电解质水溶液中加入一定量乙醇来降低溶液的界面张力，从而增强电解质溶液对电极的润湿性，最终提高碳材料的超级电容器性能。

Description

一种超级电容器用碱性电解质水溶液改性方法
技术领域
本发明属于超级电容器技术领域，具体涉及了一种超级电容器用碱性电解质水溶液改性方法。本发明涉及一种超级电容器用碱性电解质水溶液改性方法。
背景技术
超级电容器常用的电解液包括碱性水溶液和非水溶液，常见的碳电极材料既可用于碱性水溶液体系，又可用于非水溶液体系。在碱性水溶液体系中，为了增强碳电极材料的亲水性，常常需要通过掺杂氮氧等杂原子来实现，这不可避免的会降低材料的导电性，但一些碳材料的亲水性仍然较差，如何对碱性电解质溶液进行改性，降低其表面张力，减小电极材料与电解液的接触角，增强材料的润湿性，从而提高碳材料的超级电容器性能。
发明内容
本发明以Vulcan XC-72活性炭为电极材料，通过在碱性电解质水溶液中加入乙醇来降低溶液的界面张力，从而增强电解质溶液对电极的润湿性，最终提高碳材料的超级电容器性能。
本发明目的通过以下技术方案实现：
在碱性电解质水溶液中加入一定量乙醇，乙醇与碱性水溶液的体积比为0～1∶1000，以此溶液作为超级电容器的电解液，测得比容量提升0～17.3％。
具体实施方式
实施例1
一种超级电容器用碱性电解质水溶液改性方法，包括如下步骤：6mol/L氢氧化钾溶液100mL，加入乙醇体积为0mL，以此作为电解质溶液，在1A/g电流密度下测得比容量为34.0F/g。
实施例2
一种超级电容器用碱性电解质水溶液改性方法，包括如下步骤：6mol/L氢氧化钾溶液100mL，加入乙醇体积为0.4mL，以此作为电解质溶液，在1A/g电流密度下测得比容量为39.9F/g。
实施例3
一种超级电容器用碱性电解质水溶液改性方法，包括如下步骤：6mol/L氢氧化钾溶液100mL，加入乙醇体积为0.6mL，以此作为电解质溶液，在1A/g电流密度下测得比容量为37.5F/g。

Claims (3)

1.一种超级电容器用碱性电解质水溶液改性方法，其特征在于，碱性电解质水溶液中加入少量乙醇能增强超级电容器性能。
2.根据权利要求书1所述一种超级电容器用碱性电解质水溶液改性方法，其特征在于所述乙醇，乙醇与碱性水溶液的体积比为0～1∶1000。
3.根据权利要求书1～2所述的超级电容器用碱性电解质水溶液改性方法，所获得的电容器性能增强，其比容量能提升0～17.3％。
CN201710967782.XA 2017-10-17 2017-10-17 一种超级电容器用碱性电解质水溶液改性方法 Pending CN107658146A (zh)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1345074A (zh) * 2001-10-31 2002-04-17 中国科学院上海冶金研究所 一种高容量电化学电容器的制造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1345074A (zh) * 2001-10-31 2002-04-17 中国科学院上海冶金研究所 一种高容量电化学电容器的制造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐江: ""碳化物衍生碳的形成机理及其超级电容性能研究"", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 *

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