Department of Chemistry, University of Surrey, Guildford, Surrey, UK.
Phys Chem Chem Phys. 2013 Mar 14;15(10):3518-26. doi: 10.1039/c3cp50359c. Epub 2013 Feb 4.
Birnessite nanotubes and activated carbon electrodes have been used in supercapacitor cells to assess the performance of new aqueous based electrolyte systems at temperatures as low as -30 °C. The addition of ethylene glycol to aqueous sodium, lithium, potassium and ammonium sulfates has resulted in electrolytes that are still in liquid phase at such low temperatures. Extensive electrochemical testing showed that in such systems, operation of these aqueous based supercapacitors is possible at -30 °C with a specific capacitance of over 30 F g(-1) and good cycleability.
使用针铁矿纳米管和活性炭电极在超级电容器电池中进行测试，以评估在低至-30°C 温度下新型水基电解质系统的性能。在水合的硫酸钠、硫酸锂、硫酸钾和硫酸铵中添加乙二醇，得到了在如此低的温度下仍处于液相的电解质。广泛的电化学测试表明，在这些系统中，这些水基超级电容器在-30°C 下可以工作，具有超过 30 F g(-1)的比电容和良好的循环稳定性。
