基于聚吡咯@ZIF-67衍生的羟基氧化物@碳纤维复合材料的集成导电混合电极材料用于能量存储。
Integrated Conductive Hybrid Electrode Materials Based on PPy@ZIF-67-Derived Oxyhydroxide@CFs Composites for Energy Storage.
作者信息
Yang Shuaishuai, An Xianhui, Qian Xueren
机构信息
Key Laboratory of Bio-Based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China.
出版信息
Polymers (Basel). 2021 Mar 29;13(7):1082. doi: 10.3390/polym13071082.
Due to excellent flexibility and hydrophilicity, cellulose fibers (CFs) have become one of the most potential substrate materials in flexible and wearable electronics. In previous work, we prepared cobalt oxyhydroxide with crystal defects modified polypyrrole (PPy)@CFs composites with good electrochemical performance. In this work, we redesigned the crystalline and nanoscale cobalt oxyhydroxide with zeolitic imidazolate frameworks-67 (ZIF-67) as precursor. The results showed that the PPy@ZIF-67 derived cobalt oxyhydroxide@CFs (PZCC) hybrid electrode materials possess far better capacitance of 696.65 F·g than those of PPy@CFs (308.75 F·g) and previous PPy@cobalt oxyhydroxide@CFs (571.3 F·g) at a current density of 0.2 A·g. The PZCC delivers an excellent cyclic stability (capacitance retention of 92.56%). Moreover, the PZCC-supercapacitors (SCs) can provide an energy density of 45.51 mWh cm at a power density of 174.67 mWh·cm, suggesting the potential application in energy storage area.
由于具有出色的柔韧性和亲水性，纤维素纤维（CFs）已成为柔性可穿戴电子产品中最具潜力的基底材料之一。在先前的工作中，我们制备了具有晶体缺陷的氢氧化钴修饰聚吡咯（PPy）@CFs复合材料，其具有良好的电化学性能。在这项工作中，我们以沸石咪唑酯骨架-67（ZIF-67）为前驱体，重新设计了晶体和纳米级氢氧化钴。结果表明，PPy@ZIF-67衍生的氢氧化钴@CFs（PZCC）混合电极材料在电流密度为0.2 A·g时的电容为696.65 F·g，远优于PPy@CFs（308.75 F·g）和先前的PPy@氢氧化钴@CFs（571.3 F·g）。PZCC具有出色的循环稳定性（电容保持率为92.56%）。此外，PZCC超级电容器（SCs）在功率密度为174.67 mWh·cm时可提供45.51 mWh cm的能量密度，表明其在储能领域具有潜在应用。
Zotero 插件