Hierarchical Porous Carbons from Poly(methyl methacrylate)/Bacterial Cellulose Composite Monolith for High-Performance Supercapacitor Electrodes
Hierarchical Porous Carbons from Poly(methyl methacrylate)/Bacterial Cellulose Composite Monolith for High-Performance Supercapacitor Electrodes
复制标题
用于高性能超级电容器电极的聚甲基丙烯酸甲酯/细菌纤维素复合整体料的分级多孔碳
DOI：
10.1021/acssuschemeng.7b02488
复制
发表时间：
2017-10-01
影响因子：
8.4
通讯作者：
Uyama, Hiroshi
中科院分区：
文献类型：
--
作者：
Bai, Quhong;Xiong, Qiancheng;Uyama, Hiroshi
本研究从细菌纤维素(BC)中提取具有层状结构的多孔炭，用于高性能应用，例如超级电容器电极，由具有独特微观/宏观形貌的复合整体制成。以乙醇和去离子水为溶剂，采用热诱导相分离法制备了聚甲基丙烯酸甲酯(PMMA)/BC复合整体柱，BC作为主要碳源和基质，PMMA作为活化源产生所需的活化材料。扫描电子显微镜分析表明，PMMA的整体骨架均匀地负载在BC的纳米纤维上，形成了PMMA骨架与BC纳米纤维的三维缠绕结构。此外，在所获得的复合材料中，BC仍具有宏观的二维层状结构。用比表面积、结构特征和热稳定性等测试手段对其进行了表征。
This study deals with hierarchical porous carbons from bacterial cellulose (BC), having a layered structure for high-performance application, such as supercapacitor electrodes, fabricated from a composite monolith with unique microscopic/macroscopic morphology. A poly(methyl methacrylate) (PMMA)/BC composite monolith was first synthesized by thermally induced phase separation using ethanol and deionized water as solvents, where BC acts as the main carbon source as well as matrix and PMMA acts as the activator source producing the necessary activation material. Scanning electron microscopy analysis showed that a monolithic skeleton of PMMA was loaded uniformly on the nanofibers of BC to form a three-dimensional entangled structure of the PMMA skeleton and BC nanofibers, as observed in the microscopic view. Furthermore, the macroscopic two-dimensional layered structure of BC remained in the as-obtained composite. The specific surface area, structural features, and thermal stability were investigated by Brun...