非晶态硼化钴合金-还原石墨烯/棉织物柔性电极复合材料的制备与性能

王薇; 李涛; 陶璐璐; 王梦

doi:10.13801/j.cnki.fhclxb.20201014.001

非晶态硼化钴合金-还原石墨烯/棉织物柔性电极复合材料的制备与性能

常熟理工学院　纺织服装与设计学院，苏州 215500

基金项目: 江苏省重点创新训练项目(202010333016Z)；江苏省基础计划项目(BK20181038)

详细信息

通讯作者:
王薇，博士，讲师，研究方向为柔性超级电容　E-mail：wwang8860@cslg.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2020-08-05
- 录用日期: 2020-10-09
- 网络出版日期: 2020-10-13
- 刊出日期: 2021-07-14

Preparation and properties of amorphous cobalt boride alloy-reduced graphene/ cotton fabric flexible electrode composite

College of Textitle & Garment Engineering, Changshu Institute of Technology, Suzhou 215500, China

摘要

摘要: 本文采用浸渍-干燥法和化学还原法在常温常压条件下制备了非晶态硼化钴合金-还原石墨烯(CoB-RGO)/棉织物柔性复合电极。研究了不同Co²⁺浓度对CoB-RGO/棉织物复合电极结构形貌及电化学性能的影响。结果表明，Co²⁺浓度为0.14 mol/L时非晶态CoB呈相互交错开放型3D片状结构。与非晶态CoB/织物和RGO/织物复合电极相比，非晶态CoB-RGO/棉织物复合电极表现出更为理想的电化学性能。当电流密度为0.25 mA/cm², 非晶态CoB-RGO/棉织物复合电极的比电容为218.8 F/g。此外，非晶态CoB-RGO/棉织物复合电极的电化学性能受折叠次数和折叠角度的影响较小，表明其具有良好的柔韧性。
- 非晶态 /
- CoB /
- 还原石墨烯(RGO) /
- 柔性复合电极 /
- 棉织物
Abstract: Amorphous cobalt boride alloy-reduced graphene (CoB-RGO)/cotton fabric flexible composite electrodes were prepared by impregnation-drying method and chemical reduction method at room temperature and atmospheric pressure. The effects of Co²⁺ concentrations on the structural morphology and electrochemical properties of CoB-RGO/cotton fabric flexible composite electrodes were studied. The results show that amorphous CoB presents an open 3D sheet structure interlaced with each other when the concentration of Co²⁺ is 0.14 mol/L. Compared with amorphous CoB/fabric and RGO/fabric composite electrodes, amorphous CoB-RGO/fabric composite electrodes show the better electrochemical properties. With the current density of 0.25 mA/cm², the specific capacitance of amorphous CoB-RGO/cotton fabric composite electrodes is up to 218.8 F/g. There is no obvious effect of folding times and folding angles on the electrochemical performance of CoB-RGO/cotton fabric composite electrodes, which indicates their good flexibility.
- amorphous /
- CoB /
- reduced graphene (RGO) /
- flexible composite electrode /
- cotton fabric

HTML全文

图 1 棉织物、还原石墨烯(RGO)/棉织物柔性复合电极和不同浓度Co²⁺的非晶态CoB-RGO/棉织物柔性复合电极的XRD图谱

Figure 1. XRD patterns of cotton fabric, reduced graphene (RGO)/cotton fabric fabric flexible composite electrode and CoB-RGO/cotton fabric flexible composite electrodes with different Co²⁺ concentration

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图 2 不同Co²⁺浓度的非晶态CoB-RGO/棉织物柔性复合电极的SEM图像: (a)~(c) 0.093 mol/L; (d)~(f) 0.14 mol/L; (g)~(i) 0.186 mol/L

Figure 2. SEM images of amorphous CoB-RGO/cotton fabric flexible composite electrodes with different Co²⁺ concentration: (a)–(c) 0.093 mol/L; (d)–(f) 0.14 mol/L; (g)–(i) 0.186 mol/L

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图 3 非晶态CoB-RGO/棉织物柔性复合电极的EDS图谱(a)、TEM图像((b)~(d))和SAED衍射图像(e)

Figure 3. EDS spectra (a), TEM images ((b)–(d)) and SAED diffraction image (e) of amorphous CoB-RGO/cotton fabric flexible composite electrodes

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图 4 非晶态CoB-RGO/棉织物柔性复合电极的XPS图谱: (a)全谱; (b) Co2p; (c) B1s; (d) C1s

Figure 4. XPS spectra of amorphous CoB-RGO/cotton fabric flexible composite electrodes: (a) Full spectrum; (b) Co2p; (c) B1s; (d) C1s

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图 5 RGO/棉织物、非晶态CoB/棉织物和非晶态CoB-RGO/棉织物柔性复合电极的循环伏安(CV)曲线(a)和恒电流充放电(GCD)曲线(b)

Figure 5. Cyclic voltammetry (CV) curves (a) and galvanostatic charge-discharge (GCD) curves (b) of RGO/cotton fabric, amorphous CoB/cotton fabric and amorphous CoB-RGO/cotton fabric flexible composite electrodes

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图 6 不同Co²⁺浓度的非晶态CoB-RGO/棉织物柔性复合电极的CV曲线(a)和GCD曲线(b)

Figure 6. CV curves (a) and GCD curves (b) of amorphous CoB-RGO/cotton fabric flexible composite electrodes with different concentration of Co²⁺

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图 7 Co²⁺浓度为0.14 mol/L的非晶态CoB-RGO/棉织物柔性复合电极的CV曲线(a)和GCD曲线(b)

Figure 7. CV curves (a) and GCD curves (b) of amorphous CoB-RGO/cotton fabric flexible composite electrode with concentration of Co²⁺ of 0.14 mol/L

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图 8 Co²⁺浓度为0.14 mol/L的非晶态CoB-RGO/棉织物柔性复合电极的电化学阻抗图谱(a)和循环稳定曲线(b)

Figure 8. Electrochemical inductance spectra (a) and cycling performance (b) of amorphous CoB-RGO/cotton fabric flexible composite electrode with concentration of Co²⁺ of 0.14 mol/L

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图 9 非晶态CoB-RGO/棉织物柔性复合电极折叠不同角度(a)及折叠不同次数的比电容保留值(b)

Figure 9. Specific capacitance retention with different bended angle (a) and with different bended times (b) of amorphous CoB-RGO/cotton fabric flexible composite electrode

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