| 徐丰,王东兴,慈晓雷,邵学军,王越彬,刘春兰,田宝农,葛银凯.含木质素的纳米纤维素/聚吡咯复合膜的制备及其电容性能研究[J].中国造纸,2025,44(10):105-113 |
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| 含木质素的纳米纤维素/聚吡咯复合膜的制备及其电容性能研究 |
| Preparation and Capacitive Performance Study of the Lignin-containing Cellulose Nanofibril/Polypyrrole Composite Film |
| 收稿日期：2025-06-30 修订日期：2025-07-20 |
| DOI：10.11980/j.issn.0254-508X.2025.10.012 |
| 关键词: 杨木化学机械浆 含木质素的纳米纤维素 膜电极 电容性能 |
| Key Words:poplar chemi-mechanical pulp lignin-containing cellulose nanofibril film electrodes capacitive performance |
| 基金项目:山东世纪阳光纸业集团有限公司合作项目（2024370725108864，2022370113146375）。 |
| 作者 | 单位 | 邮编 | | 徐丰* | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 王东兴 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 慈晓雷* | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 邵学军 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 王越彬 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 刘春兰 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 田宝农 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 | | 葛银凯 | 山东世纪阳光纸业集团有限公司,山东潍坊,262400 | 262400 |
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| 摘要:本研究以杨木化学机械浆为原料，对其进行2,2,6,6-四甲基哌啶-N-氧自由基（TEMPO）氧化、高剪切高压均质及处理，以制备含有木质素的纳米纤维素（LCNF），并将LCNF作为柔性基材用于制备含LCNF/聚吡咯（LNP）复合膜电极。并进一步探讨TEMPO氧化程度对LCNF木质素含量、得率和形貌的影响，研究LNP复合膜微观结构变化的影响机制，解析LNP复合膜结构与电容性能的构效关系。结果表明，随着TEMPO氧化程度的提高，LCNF的木质素含量逐渐下降、尺寸逐渐减小；木质素可以通过调控纤维原纤化程度改变LCNF和LNP复合膜的形貌，并通过黏合作用进一步影响LNP复合膜的微观结构，从而改善LNP复合膜的电容性能；此外，木质素还可以通过醌/氢醌结构的可逆转换为LNP复合膜提供赝电容；由LNP-13.8%复合膜组装而成的超级电容器的功率密度和能量密度分别为499.9 μW/cm2和88.6 μWh/cm2，该复合膜具有优异的储能能力。 |
| Abstract:In this study， lignin-containing cellulose nanofibril (LCNF) was prepared using poplar chemi-mechanical pulp as the raw material， which was sequentially subjected to 2，2，6，6-tetramethylpiperidine-N-oxide (TEMPO) radical oxidation， high-shear treatment and high-pressure homogenization. The LCNF was then used as a flexible substrate to prepare LCNF/polypyrrole (LNP) composite film electrodes. Furthermore， the effects of TEMPO oxidation degree on the residual lignin content， yield and morphology of LCNF， as well as on the microstructure of LNP composite film were investigated， and the structure-activity relationship between LNP structure and capacitance performance was analyzed. The results showed that as the degree of TEMPO oxidation increased， the lignin content and size of the LCNF decreased gradually. The morphology of LCNF and LNP composite film could be altered by the lignin through the regulation of fibrillation. This could further affect the microstructure of LNP composite film through adhesion， thereby improving its capacitance performance. In addition， lignin could also provide pseudocapacitance of LNP composite film via the reversible conversion of the quinone/hydroquinone structure. Moreover， the supercapacitor assembled with the LNP-13.8% composite film exhibited a power density of 499.9 μW/cm² and an energy density of 88.6 μWh/cm²， demonstrating excellent energy storage capability. |
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