摘要
采用一步溶胶凝胶法以无水SrCl2和Cr(NO_(3))_(3)·9H_(2)O为原材料合成SrCrO_(4)/Cr_(2)O_(3)复合电极材料。XRD结果表明,SrCrO_(4)/Cr_(2)O_(3)复合电极材料的主晶格相为单斜晶系的SrCrO_(4)和菱方晶系的Cr_(2)O_(3)。FTIR和EDX结果进一步揭示SrCrO_(4)/Cr_(2)O_(3)复合电极材料中不含其它任何杂质。SEM结果表明,SrCrO_(4)/Cr_(2)O_(3)复合电极材料形成了多孔结构,颗粒间出现了粘连团聚。电化学性质分析表明,SrCrO_(4)/Cr_(2)O_(3)复合电极材料可响应可见光,阻抗谱几乎为一条直线,具有低的电荷转移阻抗,可作为电池的电极材料。
SrCrO_(4)/Cr_(2)O_(3) composite electrode material was synthesized by one-step sol-gel method with anhydrous strontium chloride and nine hydrate chromium nitrate as raw materials. XRD results showed that the main lattice phases of SrCrO_(4)/Cr_(2)O_(3) composite electrode materials are monoclinic SrCrO_(4) and rhombohombic Cr_(2)O_(3). FTIR and EDX results further revealed that there is no other impurity in SrCrO_(4)/Cr_(2)O_(3) composite electrode material. SEM results showed that the SrCrO_(4)/Cr_(2)O_(3) composite electrode material forms a porous structure, and the particles appear adhesion and agglomeration. The analysis of electrochemical properties showed that the SrCrO_(4)/Cr_(2)O_(3) composite electrode material can respond to visible light, the impedance spectrum is almost a straight line, and has a low charge transfer impedance, which can be used as the electrode material for batteries.
作者
王晶
赵宣铭
WANG Jing;ZHAO Xuan-ming(Department of Electronics and Communication Engineering,Yulin University,Yulin 719000,China)
出处
《化学工程师》
CAS
2021年第9期14-17,共4页
Chemical Engineer
基金
榆林市科技局产学研合作项目:智慧城市背景下的无人系统研究(No.CXY-2020-007-005)。
关键词
复合电极材料
主晶格
多孔结构
电荷转移阻抗
composite electrode material
main lattice
porous structure
charge transfer impedance
