Molybdenum Oxynitride Atomic Nanoclusters Bonded in Nanosheets of N-Doped Carbon Hierarchical Microspheres for Efficient Sodium Storage  

作　　者：Xiaona Pan Baojuan Xi Huibing Lu Zhengchunyu Zhang Xuguang An Jie Liu Jinkui Feng Shenglin Xiong 

机构地区：[1]School of Chemistry and Chemical Engineering,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,People’s Republic of China [2]School of Mechanical Engineering,Chengdu University,Chengdu 610106,People’s Republic of China [3]The State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China [4]School of Materials Science and Engineering,Shandong University,Jinan 250100,People’s Republic of China

出　　处：《Nano-Micro Letters》2022年第10期148-163,共16页纳微快报（英文版）

基　　金：supports provided by the National Natural Science Foundation of China(U21A2077,21971145,21871164);the Taishan Scholar Project Foundation of Shandong Province(ts20190908);the Natural Science Foundation of Shandong Province(ZR2021ZD05,ZR2019MB024);Young Scholars Program of Shandong University(2017WLJH15);and Anhui Kemi Machinery Technology Co.,Ltd.for providing a Teflon-lined stainless steel autoclave.

摘　　要：Transition metal nitrides have attracted considerable attention as great potential anode materials due to their excellent metallic conductivity and high theoretical specific capacity.However,their cycling performance is impeded by their instability caused by the reaction mechanism.Herein,we report the engineering and synthesis of a novel hybrid architecture composed of MoO2.0N0.5 atomic nanoclusters bonded in nanosheets of N-doped carbon hierarchical hollow microspheres(MoO2.0N0.5/NC)as an anode material for sodium-ion batteries.The facile self-templating strategy for the synthesis of MoO2.0N0.5/NC involves chemical polymerization and subsequent one-step calcination treatments.The design is benefi-cial to improve the electrochemical kinetics,buffer the volume variation of electrodes during cycling,and provide more interfacial active sites for sodium uptake.Due to these unique structural and compositional merits,these MoO2.0N0.5/NC exhibits excellent sodium storage performance in terms of superior rate capability and stable long cycle life.The work shows a feasible and effective way to design novel host candidates and solve the long-term cycling stability issues for sodium-ion batteries.

关 键 词：Molybdenum oxynitride Atomic nanocluster Hollow microspheres Sodium-ion batteries 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]