文献类型：期刊文献

英文题名：Electrochemical Energy Storage Properties of High-Porosity Foamed Cement

作者：Zhou, Changshun[1];Wang, Qidong[1];Zhang, Congyan[1]

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

年份：2022

卷号：15

期号：7

外文期刊名：MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000782096900001)、、EI(收录号：20221511951977)、Scopus(收录号：2-s2.0-85127778175)、WOS

基金：The authors are grateful for the financial support from the National Natural Science Foundation of Zhejiang province.; This work was financially supported by the National Natural Science Foundation of Zhejiang province (Grant No. LHY22E080001).

语种：英文

外文关键词：high-porosity; foamed cement; electrochemical; energy storage

外文摘要：Foamed porous cement materials were fabricated with H2O2 as foaming agent. The effect of H2O2 dosage on the multifunctional performance is analyzed. The result shows that the obtained specimen with 0.6% H2O2 of the ordinary Portland cement mass (PC0.6) has appropriate porosity, leading to outstanding multifunctional property. The ionic conductivity is 29.07 mS cm(-1) and the compressive strength is 19.6 MPa. Furthermore, the electrochemical energy storage performance is studied in novel ways. The PC0.6 also shows the highest areal capacitance of 178.28 mF cm(-2) and remarkable cycle stability with 90.67% of initial capacitance after 2000 cycles at a current density of 0.1 mA cm(-2). The superior electrochemical energy storage property may be attributed to the high porosity of foamed cement, which enlarges the contact area with the electrode and provides a rich ion transport channel. This report on cement-matrix materials is of great significance for large scale civil engineering application.