文献类型：期刊文献

英文题名：Properties of magnesium phosphate cement as electrolyte for structural supercapacitor

作者：Zhou Changshun[1];Wang Qidong[1];Yu Zhouping[1]

机构：[1]Shaoxing Univ, Yuanpei Coll, Shaoxing 312000, Peoples R China

年份：2021

卷号：28

期号：4

起止页码：803

外文期刊名：FUNCTIONAL MATERIALS

收录：ESCI(收录号：WOS:000734462900026)、EI(收录号：20220611606708)、Scopus(收录号：2-s2.0-85124169111)、WOS

基金：Financial support from the National Natural Science Foundation of China (41572305), Construction Research Project of Zhejiang Province (2019K148), General Research Project of Education Department of Zhejiang Province (Y201941058) are gratefully acknowledged.

语种：英文

外文关键词：magnesium phosphate cement; electrolyte; structural supercapacitors; compressive strength; electrochemical performance

外文摘要：The properties of cement based on magnesium phosphate (MPC) were investigated; the effect of various concentrations (3M, 6M and 9M) of alkalis Li0H, NaOH and KOH on the internal resistance, ionic conductivity and compressive strength of the structural electrolyte was studied. The results show that MPC-K9 is the optimal structural electrolyte. The maximum ionic conductivity of the MPC-K9 structural electrolyte was 16.85 mS"cm-1, which indicates its best electrochemical characteristics. An integrated structural supercapacitor is assembled with graphene electrodes and MPC-K9 structural electrolyte, and its electrochemical characteristics have been measured. The cyclic voltammetry curve was nearly rectangular in shape, indicating a typical double layer effect. The constructive supercapacitor had a surface capacity 16.72 mF/cm2 and a compressive strength 5.9 MPa. The structural supercapacitor shows good stability and reversibility with 94.50 % capacity retention after 3000 cycles. Thus, magnesium phosphate cement can be used in the field of energy storage in buildings.