General Growth of Carbon Nanotubes for Cerium Redox Reactions in High-Efficiency Redox Flow Batteries

作     者：Zhaolin Na Ruifang Yao Qing Yan Xudong Sun Gang Huang 

作者机构：Liaoning Engineering Laboratory of Special Optical Functional CrystalsCollege of Environmental and Chemical EngineeringDalian UniversityDalian 116622China Institute of Ceramics and Powder MetallurgySchool of Materials Science and EngineeringNortheastern UniversityShenyangLiaoning 110819China WPI Advanced Institute for Materials ResearchTohoku UniversitySendai 980-8577Japan 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2019年第2019卷第1期

页      面：261-272页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work is financially supported by the National Natural Science Foundation of China(21801034 51872033 and 51732007) 

主　　题：electrode Carbon cerium 

摘      要：Carbon nanotubes(CNTs)possess remarkable mechanical,electrical,thermal,and optical properties that predestine them for numerous potential *** conventional chemical vapor deposition(CVD)route for the production of CNTs,however,suffers from costly and complex ***,we demonstrate a general and high-yield strategy to grow nitrogendoped CNTs(NCNTs)on three-dimensional(3D)graphite felt(GF)substrates,through a direct thermal pyrolysis process simply using a common tube furnace,instead of the costly and complex CVD ***,the NCNTs-decorated GF(NCNT-GF)electrode possesses enhanced electrocatalytic performance towards cerium redox reactions,mainly due to the catalytic effect of N atoms doped into NCNTs,and ingenious and hierarchical 3D architecture of the *** a result,the cell with the NCNT-GF serving as a positive electrode shows the improved energy efficiency with increases of about 53.4%and 43.8%over the pristine GF and the acidly treated GF at a high charge/discharge rate of 30 mA cm^(-2),***,the as-prepared NCNT catalyst-enhanced electrode is found to be highly robust and should enable a long-term cycle without detectable efficiency loss after 500 *** viable synthetic strategy reported in this study will contribute to the further development of more active heteroatom-doped CNTs for redox flow batteries.