论文标题
基于新型TIN的凝胶聚合物电极及其在钠离子电容器中的使用
Novel Tin-based Gel Polymer Electrode and Its Use in Sodium-ion Capacitor
论文作者
论文摘要
我们提出了一种基于锡的新型柔性，凝胶聚合物负电极，用于钠离子设备。电极是通过将锡微粒捕获在由浸入沉淀相结合并在钠离子导电液体电解质中浸泡而形成的多孔电解质膜中制备的。锡颗粒是活性电极材料和电子导体，而凝胶聚合物可以有效地转移到锡颗粒。使用扫描电子显微镜分析了复合凝胶电极及其在钠离子电容器中的性能。 X射线衍射，循环伏安法和电静态电荷分离。电容器的特定容量显示出最初的增加，高达175个电荷释放周期。由于钠的重复插入/去插入后，由于较大颗粒的分解，锡表面积的增加来解释了这种增加。还测量了1 A G-1时210 mAh G-1的高电容。
We present a novel tin based flexible, gel polymer negative electrode for use in sodium-ion devices. The electrodes have been prepared by trapping tin micro-particles in a porous electrolyte membrane formed by immersion precipitation phase-inversion and soaking in a sodium-ion conducting liquid electrolyte. The tin particles are the active electrode materials as well as electron conductors, while the gel polymer enable efficient ion-transfer to the tin particles. The composite gel electrode and its performance in sodium-ion capacitor has been analyzed using scanning electron microscopy. x-ray diffraction, cyclic voltammetry and galvanostatic charge-discharge. The specific capacity of the capacitor shows an initial increase, up to 175 charge-discharge cycles. This increase has been explained by the increase in surface area of tin due to disintegration of the larger particles upon repeated insertion/de-insertion of sodium. A high capacitance of 210 mAh g-1 at 1 A g-1 has also been measured.
