• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Ionic self-assembled organogel polyelectrolytes for energy storage applications
【24h】

Ionic self-assembled organogel polyelectrolytes for energy storage applications

机译：离子自组装有机凝胶聚电解质用于储能应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High performance organogel polyelectrolytes were synthesized by super acid catalyst step-growth polycondensation of isatin and the non-activated multiring aromatic p-terphenyl. Subsequently, a chemical modification reaction was carried out to obtained quaternary ammonium functionalized polyelectrolytes through a nucleophilic substitution reaction with (3-bromopropyl)trimethylammonium bromide and potassium carbonate at room temperature. Different functionalization degrees were obtained by controlling the molar ratio of the polymer and the modification agent. The organogel polyelectrolytes were formed due to the high phase segregation and self-assembling observed owing to the amphiphilic character of the material (hydrophobic backbone and hydrophilic fragment grafted). The organogel polyelectrolytes were used to fabricate supercapacitors using two commercial graphite electrodes. These polyelectrolytes displayed good ionic conductivity without the use of another doping agent such as salts, acids or ionic liquids. In this work, a strong correlation of functionalization degree and ionic conductivity of the polyelectrolytes and capacitance of the supercapacitors was observed. The ionic conductivity of the polyelectrolytes reached 0.46 mS cm(-1) for the 100% functionalization degree, meanwhile the polyelectrolyte with the 10% functionalization degree shows 0.036 mS cm(-1). Li-doped polyelectrolytes showed higher ionic conductivity due the presence of extra ionic charges (2.26 and 0.2 mS cm(-1) for the polyelectrolytes with the 100% and 10% of functionalization degree, respectively). The principal novelty of this work lies in the possibility of modulating the ionic conductivity of organogels and the capacitance of supercapacitors by chemical modifications. The capacitance of the supercapacitors was 1.17 mF cm(-2) for the 100% functionalized polyelectrolyte and is higher in comparison with the polyelectrolyte with 10% functionalization degree (0.68 mF cm(-2)) measured at a discharge current of 52 mu A cm(-2) by galvanostatic charge discharge technique. Additionally, when lithium salt (lithium triflate) was added, the polyelectrolytes retained a gel consistency, increasing the ionic conductivity and capacitance. For the doped polyelectrolytes, the areal capacitance reaches 1.37 mF cm(-2) for the 100% functionalization degree polyelectrolyte with lithium triflate. These organogel polyelectrolytes open the possibility to design flexible and all solid-state supercapacitors without the risk of leakage.
机译：高性能的有机凝胶的聚电解质是由靛红的超强酸催化剂的逐步增长缩聚和未活化的芳族multiring对三联苯合成。随后，将化学修饰反应通过与（3-溴丙基）三甲基溴化铵和碳酸钾在室温下的亲核取代反应进行，以得到的季铵官能化聚电解质。不同官能度，通过控制聚合物的和的摩尔比改性剂获得。有机凝胶的聚电解质是由于高的相分离和形成自组装由于材料（疏水性主链和亲水性片段接枝）的两亲性特征观察到。有机凝胶的聚电解质被用于使用两种市售石墨电极编造超级电容器。这些聚电解质显示出良好的离子传导性，而无需使用另一种掺杂剂，如盐，酸或离子液体。在这项工作中，观察到官能化程度和聚电解质的离子电导率和超级电容器的电容的强相关性。聚电解质的离子导电率达到了100％的官能化度0.46毫秒厘米（-1），同时用10％的官能化程度示出了0.036毫秒厘米（-1）的聚电解质。锂掺杂聚电解质表明由于额外的离子电荷的存在更高的离子导电性（2.26和0.2毫秒厘米（-1），用于与100％的聚电解质和官能化程度为10％，分别地）。这项工作的主要新颖之处在于在调节有机凝胶的离子电导率和超级电容器的由化学修饰的电容的可能性。超级电容器的电容为1.17μF的厘米（-2）为100％的官能化的聚电解质，并与10％的官能化度（0.68μF的厘米（-2））在52亩A的放电电流测得的聚电解质的比较是较高厘米（-2）由恒电流充放电的技术。此外，溶液中加入锂盐（三氟甲磺酸锂）的情况下，聚电解质保持凝胶稠度，增加离子导电率和电容。对于掺杂的聚电解质，该面积电容达到了100％的官能化程度的聚电解质与三氟甲磺酸锂1.37μF的厘米（-2）。这些有机凝胶电解质打开，设计灵活，全固态超级电容器无泄漏的风险的可能性。

著录项

  • 来源
    《RSC Advances》 |2020年第20期|共7页
  • 作者

    Avila-Nino Jose A.; Olvera Lilian I.;

  • 作者单位

    CONACYT Ctr Res &

    Technol Dev Electrochem CIDETEQ Parque Tecnol Queretaro Pedro Escobedo 76703 Queretaro Mexico;

    CONACYT Ctr Res &

    Technol Dev Electrochem CIDETEQ Parque Tecnol Queretaro Pedro Escobedo 76703 Queretaro Mexico;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号