Mo_(3)Nb_(14)O_(44): A New Li^(+) Container for High-Performance Electrochemical Energy Storage

作     者：Renjie Li Guisheng Liang Xiangzhen Zhu Qingfeng Fu Yongjun Chen Lijie Luo Chunfu Lin Renjie Li;Guisheng Liang;Xiangzhen Zhu;Qingfeng Fu;Yongjun Chen;Lijie Luo;Chunfu Lin

作者机构：Institute of Materials for Energy and EnvironmentSchool of Materials Science and EngineeringQingdao UniversityQingdao 266071China School of Materials Science and EngineeringHainan UniversityHaikou 570228China Songshan Lake Materials LaboratoryDongguan 523808China 

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

年 卷 期：2021年第4卷第1期

页      面：65-71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：supported by National Natural Science Foundation of China(51762014) China Postdoctoral Science Foundation(2019M652316) 

主　　题：anode in situ XRD Li^(+)storage Mo3Nb14O44 shear ReO3 crystal structure 

摘      要：Intercalating Nb-based oxides are promising anode compounds for lithiumion batteries since they have both good safety and large ***,the research in this field is still ***,Mo_(3)Nb_(14)O_(44)with a large theoretical capacity of 398 mAh g^(–1)(Mo^(64)←→Mo^(4+)and Nb^(5+)←→Nb^(3+))is exploited as a new Nb-based oxide anode compound,and Mo_(3)Nb_(14)O_(44)micron-sized particles(Mo_(3)Nb_(14)O_(44)-M)and Mo3Nb14O44 nanowires(Mo_(3)Nb_(14)O_(44)-N)are ***3Nb14O44 owns a tetragonal shear ReO_(3)crystal structure(high-symmetric 14 space group)constructed by 4×4×∞(Mo,Nb)O_(6)octahedron blocks linked by Mo O4 tetrahedra,forming an A–B–A layered structure with a large interlayer *** interesting structure allows fast Li+storage within the interlayers and significant intercalation-pseudocapacitive behavior,leading to the high rate performance of Mo_(3)Nb_(14)O_(44)-M/Mo_(3)Nb_(14)O_(44)-N with a large 10 C versus 0.1 C capacity retention percentage of 38.1/54.2%.Mo_(3)Nb_(14)O_(44)-M/Mo_(3)Nb_(14)O_(44)-N further exhibits a safe operating potential of 1.72/1.68 V,large reversible capacity of 323/321 m Ah g^(–1)at 0.1 C,high initial coulombic efficiency of 92.2/90.0%,and good cycling stability with 71.8/75.8%capacity retention after 1000 cycles at10 ***,a Li Mn_(2)O_(4)/Mo_(3)Nb_(14)O_(44)-N full cell also performs ***,Mo_(3)Nb_(14)O_(44)holds great promise as a fast-charging,safe,largecapacity,high-efficient,and long-life Li^(+)anode container.