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首页> 外文期刊>Journal of Wood Chemistry and Technology >WOOD PULP FIBER WRAPPED BY FISH-SCALE GRAPHENE AS FLEXIBLE AND FREE-STANDING SUPERCAPACITOR ELECTRODE
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WOOD PULP FIBER WRAPPED BY FISH-SCALE GRAPHENE AS FLEXIBLE AND FREE-STANDING SUPERCAPACITOR ELECTRODE

机译：鱼鳞状石墨烯包裹的木质纸浆纤维，柔软，自立的超级电容器电极

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摘要

Poplar wood pulp was adopted as both frame and precursor for the synthesis of pulp fiber (PF)/reduced graphene oxide composite via a simple and low-cost method. In this method, the PF based on graphene (PFG) composite film electrode was prepared by a simple vacuum filtration process with various ratios (PF: reduced graphene oxide (RGO) = 5:1, PF:RGO = 5:2, PF:RGO = 5:3, PF:RGO = 5:4, PF:RGO = 5:5). In terms of special structures, the PFG can be used as electrodes without metal-collector, adhesives, and additives. The optimal ratio (PF:RGO = 5:4) film electrode displayed a high areal-specific capacitance of 683 mF/cm~2 at 1 mA/cm~2 with a mass of 5.3mg/cm~2 (specific capacitance of 129F/g) and good cycling stability (87.5% capacitance retention after 10,000 cycles at 5 mA/cm~2) as well as excellent rate capability and high flexibility (suitable for any angle, even 180°). Moreover, the device could possess a maximum energy density of 47.71 μWh/cm~2 and a maximum power density of 1251 μW/cm~2. These results suggest that the composite PGF film is a promising electrode material.
机译：杨木纸浆既用作框架又用作前体，用于通过简单且低成本的方法合成纸浆纤维（PF）/还原型氧化石墨烯复合材料。在该方法中，通过简单的真空过滤工艺以各种比例（PF：还原氧化石墨烯（RGO）= 5：1，PF：RGO = 5：2，PF： RGO = 5：3，PF：RGO = 5：4，PF：RGO = 5：5）。就特殊结构而言，PFG可用作电极，而无需金属收集器，粘合剂和添加剂。最佳比例（PF：RGO = 5：4）薄膜电极在1 mA / cm〜2时显示出683 mF / cm〜2的高面积比电容，质量为5.3mg / cm〜2（129F的比电容） / g）和良好的循环稳定性（在5 mA / cm〜2的10,000次循环后，电容保持率为87.5％），以及出色的倍率能力和高柔韧性（适用于任何角度，甚至180°）。此外，该装置可以具有47.71μWh/ cm〜2的最大能量密度和1251μW/ cm〜2的最大功率密度。这些结果表明，复合PGF膜是有前途的电极材料。

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