Directional Oxygen Functionalization by Defect in Different Metamorphic-Grade Coal-Derived Carbon Materials for Sodium Storage

作     者：Hanqing Zhao Dan Zhao Jianqi Ye Pengfei Wang Maosheng Chai Zhong Li Hanqing Zhao;Dan Zhao;Jianqi Ye;Pengfei Wang;Maosheng Chai;Zhong Li

作者机构：Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi ProvinceTaiyuan University of TechnologyTaiyuan Shanxi 030024China State Key Laboratory of Coal ConversionInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan Shanxi 030001China Center for Nano and Micro MechanicsTsinghua UniversityBeijing 100084China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2022年第5卷第1期

页      面：313-320页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported the National Natural Science Foundation of China(No.21878207) Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province(2019) Key Research and Development Project(International Science and Technology Cooperation Program)(No.201803D421011) 

主　　题：anode coal-based carbon oxygen functional groups sodium-ion battery 

摘      要：As the limiting factor for an energy storage technique from lab-scale to industrial-scale,cost means not only the price of raw materials but also the simplicity of processing *** this work,the oxygen functionalized carbon materials were obtained from three representative different metamorphic-grade coals,that is,lignite,bitumite,*** functional groups like quinones,carboxylic anhydrides,and lactones are easier to form near defects according to the thermogravimetric-mass spectrometry measurements and density functional theory *** the highest amount of defects and C=O contained functional groups,the low metamorphic-grade lignite derived carbon exhibits a reversible capacity of 259.7 mA h g^(-1)after 50 cycles at 0.03 A g^(-1),best among these micron sized coal-based *** surface active sites contribute highly stable and majority of sodium storage capacity evidenced by in situ Raman spectra and cyclic voltammetry curves at different scan *** coal-based carbon materials in this work offer options for industrial applications of sodium-ion battery anode materials.