Rationally exfoliating chitin into 2D hierarchical porous carbon nanosheets for high-rate energy storage
作者机构：College of Chemistry and Molecular ScienceHubei Engineering Center of Natural Polymer-based Medical MaterialsWuhan UniversityWuhan430072China Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2020年第13卷第6期
页 面：1604-1613页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：This work was supported by the Major Program of National Natural Science Foundation of China(No.21334005) the Major International(Regional)Joint Research Project(No.21620102004)
主 题：two-dimensional carbons materials mass production hierarchical porosity energy storage
摘 要：Two-dimensional(2D)carbon nanomaterials with hierarchical porous structure and heteroatoms doping are highly desirable in the fields of energy storage because of their rich active surface and open ion diffusion ***,the scalable preparation of carbon materials simultaneously possessing ultrathin 2D feature and hierarchical pores remains a considerable ***,a facile one-step method to massively fabricate 2D porous chitin nanosheets(coded as PCNs)via a phytic acid assisted top-down exfoliation of bulk chitin under hydrothermal treatment was ***,2D carbon nanosheets with extra-thin thickness(3.6 nm),well-defined hierarchical porosity,high specific surface area(855 m2·g^-1),as well as abundant self-doped heteroatoms(N,O,P)were fabricated by carbonizing the PCNs,and was named as *** as-obtained HPCNs demonstrated remarkable electrochemical performance as electrode material for *** symmetric supercapacitors(SSCs)based on HPCNs exhibited a high specific capacitance of 79 F·g^-1(316 F·g^-1 for single electrode)in 6 M KOH aqueous electrolyte solution,as well as a remarkable energy density of 23.8 W·h·kg^-1 by using 1 M Li2SO4 as *** is also demonstrated that HPCNs/PCNs hybrid dispersions can be used as inks to fabricate conductive films and energy devices with high strength and superior *** work paves a new avenue for the economical and large-scale synthesis of 2D hierarchically porous carbon materials for energy storage related applications.
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