Zhou Changshun, Wang Qidong, Zhang Congyan
Yuanpei College, Shaoxing University, Shaoxing 312000, China.
Materials (Basel). 2022 Mar 26;15(7):2459. doi: 10.3390/ma15072459.
Foamed porous cement materials were fabricated with HO as foaming agent. The effect of HO dosage on the multifunctional performance is analyzed. The result shows that the obtained specimen with 0.6% HO of the ordinary Portland cement mass (PC0.6) has appropriate porosity, leading to outstanding multifunctional property. The ionic conductivity is 29.07 mS cm 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 and remarkable cycle stability with 90.67% of initial capacitance after 2000 cycles at a current density of 0.1 mA cm. 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.
以HO为发泡剂制备了泡沫多孔水泥材料。分析了HO用量对多功能性能的影响。结果表明，普通硅酸盐水泥质量的0.6% HO（PC0.6）所制得的试样具有合适的孔隙率，导致其具有优异的多功能性能。离子电导率为29.07 mS/cm，抗压强度为19.6 MPa。此外，还以新的方式研究了电化学储能性能。PC0.6还显示出最高的面积电容为178.28 mF/cm²，并且在0.1 mA/cm²的电流密度下循环2000次后具有显著的循环稳定性，初始电容保持率为90.67%。优异的电化学储能性能可能归因于泡沫水泥的高孔隙率，其扩大了与电极的接触面积并提供了丰富的离子传输通道。这份关于水泥基材料的报告对大规模土木工程应用具有重要意义。
