| 细菌纤维素/碳纳米管/MnO2复合超级电容器电极 |
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| 引用本文： | 刘亚丽,张素风,呼旭旭,李磊,李楠,刘叶. 细菌纤维素/碳纳米管/MnO2复合超级电容器电极[J]. 精细化工, 2023, 40(12) |
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| 作者姓名： | 刘亚丽 张素风 呼旭旭 李磊 李楠 刘叶 |
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| 作者单位： | 陕西科技大学轻工科学与工程学院,陕西科技大学轻工科学与工程学院,陕西科技大学轻工科学与工程学院,陕西科技大学轻工科学与工程学院,陕西科技大学轻工科学与工程学院,陕西科技大学轻工科学与工程学院 |
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| 基金项目： | 陕西省重点产业创新链项目(2020ZDLGY11-03);生物质化学与材料国际联合研究中心(2018GHJD-19);陕西省秦创“科学家+工程师”队伍建设项目(2022KXJ-135)。 |
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| 摘 要： | 基于细菌纤维素(BC)的三维多孔及柔性支架结构和碳纳米管(MWCNT)的优良导电性,构筑起BC/MWCNT自支撑导电基底。其中,二者通过氢键紧密结合,协同赋予复合基底优良的电导率和机械性能。然后将二氧化锰(MnO2)电沉积在该基底上,构建了一种新型的BC/MWCNT/MnO2薄膜电极。BC/MWCNT复合膜的多孔结构、电解质吸收特性及蜂窝状活性MnO2纳米片的桥连结构,赋予其出色的电化学性能(在1 mA cm-2的电流密度下,其面积比电容和质量比电容分别达到1.17 F cm-2和200 F g-1)和显著的循环稳定性(在20 mA cm-2的电流密度下进行10000次循环后,其比电容保留率稳定在96%)。这种无粘合剂的薄膜电极制备简便且成本低廉,在开发柔性储能器件方面具有巨大潜力。关键词：细菌纤维素(BC);碳纳米管(MWCNT);二氧化锰(MnO2);膜电极;电化学性能中图分类号：TQ630 文献标识码： A 文章编号：1003-5214 (2020) 01-0000-00
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| 关 键 词： | 细菌纤维素（BC） 碳纳米管（MWCNT） 二氧化锰（MnO2） 膜电极 电化学性能 |
| 收稿时间： | 2023-02-14 |
| 修稿时间： | 2023-05-27 |
Electrochemical properties of bacterial cellulose/carbon nanotubes/ MnO2 composite membrane electrode |
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| LIU Yali,ZHANG Sufeng,HU Xuxu,LI Lei,LI Nan and LIU Ye. Electrochemical properties of bacterial cellulose/carbon nanotubes/ MnO2 composite membrane electrode[J]. Fine Chemicals, 2023, 40(12) |
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| Authors: | LIU Yali ZHANG Sufeng HU Xuxu LI Lei LI Nan LIU Ye |
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| Affiliation: | College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China,College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi''an 710021;Shaanxi,China |
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| Abstract: | Based on the three-dimensional porous and flexible scaffold structure of bacterial cellulose (BC) and the excellent conductivity of carbon nanotubes (MWCNT), a self-supporting conductive substrate was fabricated, and then manganese dioxide (MnO2) was electrodeposited on the substrate to construct a novel BC/MWCNT/MnO2 thin film electrode. Among them, the two components are closely combined through hydrogen bonds, synergistically endowing the composite substrate with excellent electrical conductivity and mechanical properties. The porous structure, electrolyte absorption characteristics and bridging structure of the honeycomb active MnO2 nanosheets of the BC/MWCNT composite membrane endow it with excellent electrochemical performance (at a current density of 1 mA cm-2, its areal and mass specific capacitances reach 1.17 F cm-2 and 200 F g-1, respectively) and remarkable cycling stability (the specific capacitance retention is stable at 96% after 10,000 cycles at a current density of 20 mA cm-2). Such binder-free thin-film electrodes are facile and inexpensive to prepare, and have great potential in the development of flexible energy storage devices. |
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| Keywords: | bacterial cellulose (BC) carbon nanotubes (MWCNT) manganese dioxide (MnO2) membrane electrode electrochemical performance |
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