Polyoxometalate-based Cu/Zn-MOFs with diverse stereo dimensions as anode materials in lithium ion batteries
Polyoxometalate-based Cu/Zn-MOFs with diverse stereo dimensions as anode materials in lithium ion batteries
复制标题
具有不同立体尺寸的多金属氧酸盐基 Cu/Zn-MOFs 作为锂离子电池负极材料
DOI：
10.1016/j.cej.2020.127117
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发表时间：
2021
影响因子：
15.1
通讯作者：
Ninghui Song
中科院分区：
文献类型：
--
作者：
Zikai Wang;Rong Bi;Jiadi Liu;Kuaibing Wang;Feifei Mao;Hua Wu;Yuanqing Bu;Ninghui Song
Four new polyoxometalate-based metal-organic frameworks (POMOFs) ofNAU3–6with various architectural structure features have been prepared through hydrothermal methods, and characterized by single crystal X-ray diffraction. Based on semblable 1D hamburger chains,NAU3and4show 3D and 2D supramolecular networks due to the Van der Waals' forces by altering polyoxometalate anions. When the same SiW12O404−anions and disparate metal centers are employed inNAU5and6,NAU5shows a fascinating 2D layer constructed by 1D folded chains, andNAU6displays a 2D pillared layer with polyoxometalate anions as pillars. Directly employed the four crystalline POMOFs as the anode materials in lithium ion battery (LIB),NAU3–6give obvious electrochemical performance divergences and the reversible capacities maintain stable at 575.8, 435.5, 314.8 and 362 mA h g−1, respectively. TheNAU3shows a high initial and reversible capacity of 1406.4 and 575.8 mA h g−1at the current density of 100 mA g−1, especially providing an excellent rate performance of 58.1% at 1000 mA g−1. Further, the lithium storage mechanisms based on diverse structural features have also been meticulously investigated.
