新型水泥基电池的制备与电化学性能研究

Preparation and Electrochemical Properties of Novel Cement-Based Batteries

新型水泥基电池作为一种建筑储能装置,具有成本低、环境友好和可充电性等优点而受到国内外科研工作者的广泛关注。本文将不同导电填料与正、负极活性物质混合研磨,然后经真空干燥处理制成新型水泥基可充电电池的电极,研究了不同导电填料和用量对可充电水泥基电池电化学性能的影响。结果表明:在正、负极活性物质中掺入质量分数为25%的炭黑导电填料的水泥基电池的容量达到12.5 mAh,能量密度为1.575 Wh/m^(2),放电寿命超过了3.3 h,其电化学性能优于相同质量分数的石墨和石墨烯导电填料水泥基电池。

As a kind of building energy storage device,the novel cement-based battery has the advantages of low cost,environmental friendliness and rechargeability,and has been widely concerned by researchers at home and abroad.In this study,the electrode of a new cement-based rechargeable battery was made by mixing different conductive fillers with positive and negative active substances and grinding,and then drying by vacuum.And the effects of the kinds and content of the conductive fillers on the electrochemical property of the rechargeable cement-based batteries were investigated.The results show the cement-based battery with the mass fraction of 25%carbon black possesses a battery capacity of 12.5 mAh,an energy density of 1.575 Wh/m^(2),and the discharge lifespan exceeds 3.3 h,its electrochemical properties are better than that of graphite cement-based batteries and graphene cement-based batteries with the same mass fraction.