Pyrrolic nitrogen-doped carbon sandwiched monolayer MoS2 vertically anchored on graphene oxide for high-performance sodium-ion battery anodes
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In this work, a novel pyrrolic nitrogen-doped carbon sandwiched monolayer MoS2 hybrid was prepared. This sandwiched hybrid vertically anchors on graphene oxide as anode materials for sodium-ion batteries. Such electrode was fabricated by facile ionic liquid-assisted reflux and annealing methods. Owing to rational structure and enhancement from pyrrolic nitrogen dopant, this unique MoS2/C-graphene hybrid exhibits reversible specific capacity of 486 mAh g−1 after 1000 cycles with a low average fading capacity of 0.15 mAh g−1 (fading cyclic rate of ca. 0.03% per cycle). A capacity of 330 mAh g−1 is remained at the current densities of 10.0 A g−1. The proposed strategy provides a convenient way to create new pyrrolic nitrogen-doped hybrids for energy field and other related applications.
KeywordsSandwiched nanoarchitectures Pyrrolic nitrogen-doped carbon MoS2 Sodium-ion battery
The authors would like to acknowledge support from the National Natural Science Foundation of China (No. 51502057, 51572058, 51307046, 91216123, 51174063), the Natural Science Foundation of Heilongjiang Province (E201436), the International Science & Technology Cooperation Program of China (2013DFR10630, 2015DFE52770), Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP 20132302110031), Natural Science Foundation of Heilongjiang Province of China (Grant No. E2016062), the China Postdoctoral Science Foundation (General Financial Grant No. 2014M561345), the Heilongjiang Postdoctoral Science Foundation (LBH-Z14105), the Scientific Research Foundation for the Returned Overseas Chinese Scholars of the State Education Ministry (No. 20151098), the University Nursing Program for Young Scholars with Creative Talents in Heilongjiang province (No. 2015082), the Open Project Program of the Key Laboratory for Photonic and Electric Band Gap Materials of the Ministry of Education of Harbin Normal University (No. PEBM201405), postdoctoral scientific research developmental fund of Henlongjiang Province (LBH-Q14144), the Research Foundation for the Returned Overseas Chinese excellent Scholars of Heilongjiang Province (No. 2015424), National Key Research & Development Program (2016YFB0303903), and the Foundation of Science and Technology on Advanced Composites in Special Environment Laboratory.