文献类型：期刊文献

英文题名：Excellent lithium storage performance of Ni-MOFs/GO composite as anode in lithium ion battery

作者：Zhu, Weijie[1];Wang, Gaolei[1];Zhou, Shiqi[1];Min, Yuxin[1];Yang, Chaofan[1];Huang, Junjie[1]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2024

卷号：48

期号：41

起止页码：17961

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:001329421000001)、、EI(收录号：20244217217426)、Scopus(收录号：2-s2.0-85206450532)、WOS

基金：This work is supported by the National Natural Science Foundations of China (No. 21875142) and the Natural Science Foundation of Zhejiang Province (LQ23E020003).

语种：英文

外文关键词：Layered semiconductors - Lithium compounds - Metal-Organic Frameworks

外文摘要：Metal-organic frameworks (MOFs) have been perceived as promising electrode materials in lithium ion batteries (LIBs) due to their tunable three-dimensional porous frameworks and large surface areas. However, the coordinate bonds between metallic ions and organic ligands in MOFs are easily broken during the redox process, resulting in structural breakage and poor electrochemical performance. In this study, graphene oxide (GO) has been applied as a matrix to anchor Ni2+ through carboxyl groups, thereby forming Ni-MOFs in situ on the surface and effectively enhancing the structural stability of Ni-MOFs. When used as an anode in an LIB, Ni-MOFs/GO can present a specific capacity of 740.8 mA h g-1 at 50 mA g-1 with almost no capacity degradation after 100 cycles. This performance can be attributed to the large d-pi electron conjugation, which not only contributes to rapid electron transfer but also benefits the delocalization of charge. Additionally, the GO matrix can effectively prevent the agglomeration of Ni-MOF particles, which also aids the structural stabilization of Ni-MOFs in the charge/discharge process, thus enhancing the electrochemical performance of Ni-MOFs/GO. Metal-organic frameworks can deliver high lithium storage capacity due to the electron conjugated system and the stable porous frameworks built by organic ligands and transitional metallic ions.