Synthesis and Supercapacitors Properties of Coordination Polymers based on {P2W18}
作者单位：Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education Harbin Normal University
会议名称：《中国化学会第十届全国无机化学学术会议》
会议日期：2019年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 07[理学] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学]
关 键 词：[P2W18O62]6- hydrothermal method supercapacitor
摘 要：People have the higher and higher demand for energy storage with the rapid development of the world economy. Supercapacitor attractsmore attentions in the application fields of accumulation energy as a kind of newfashioned energy device. In this paper, [K{Ag(bim)}(PWO)](bim=biimidazole)(1) was successfully synthesized by hydrothermal method. X-ray diffractionan analysis revealed that compound 1 consists of one [PWO], [Ag(bim)] units and K ions. The [PWO] is surrounded by six K and interfacing [PWO] is linked by two K to form 1D chains. 2D layer was formed by the adjacent chains with K-O bond, and neighboring layers are further extended through the Ag-O bond to the interpenetrating 3D framework(Fig.1 a). Scanning Electron Microscope(SEM) showed that compound 1 has the morphology of like rhombus shape(Fig.1 b). Compound 1 was applied as electrode material for testing cyclic voltammetry(CV), galvanostatic charge/discharge(GCD) to estimate supercapacitor. As shown in Fig.1 c, there were two pairs obvious redox peaks which can be attributed to electron transfer of W/W. GCD curves indicated specific capacitance of 975.4 F g at a current density of 2 A g(Fig.1 d).