文献类型：期刊文献

英文题名：Dual-metal-organic frameworks derived manganese and zinc oxides nanohybrids as high performance anodes for lithium-ion batteries

作者：Guo, Fuyuan[1];Chen, Hongyan[1];Chen, Yue[1];Zhang, Wei[1];Li, Zhimiao[1];Xu, Yunlong[1];Wang, Yaqian[1];Zhou, Jiajing[1];Zhang, Huang[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Northwestern Polytech Univ, Inst Flexible Elect IFE, Xian 710072, Shaanxi, Peoples R China

年份：2021

卷号：852

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20203609147656);WOS:【SCI-EXPANDED(收录号:WOS:000579878700014)】；

基金：This work is supported by Shanghai Nanotechnology Special Foundation (No. 11nm0500900), Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500). H.Z. acknowledges the financial support from the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Lithium-ion batteries; Anode materials; Bi-metal oxides; Nanohybrids; Metal-organic frameworks

摘要：Metal-organic framework (MOF) derivatives are attracting increasing interests for next-generation lithium-ion battery anode materials. Here, a novel approach has been applied to synthesize binary Mn-Zn oxides nanohybrids embedded in porous carbon matrix by pyrolysis of dual-metal-organic frameworks. The as-fabricated MnO/ZnO@C nanohybrids exhibit superior lithium storage capabilities, reaching a reversible capacity of 1396 mAh g(-1) at 0.2 A g(-1) with an initial coulombic efficiency of higher than 75%. When cycled at 2 A g(-1), the electrode maintained at 636 mAh g(-1) after 1000 cycles, indicating the outstanding high-rate capability and cycling stability. The improved electrochemical performance can be attributed to the interconnected porous structure of carbon frameworks and uniform heterostructure nanohybrids, which efficiently improve the charge transfer and buffer the volume expansion during repeated lithiation process. These findings demonstrate an efficient strategy of using dual-MOF-derived bi-metal oxide nanostructures as high performance anodes for lithium-ion batteries. (C) 2020 Elsevier B.V. All rights reserved.