許冬冬副教授課題組和劉犇教授課題組合作在LANGMUIR發(fā)表研究論文
Hierarchically Hollow and Porous NiO/NiCo2O4 Nanoprisms Encapsulated in Graphene Oxide for Lithium Storage
Wang, YY (Wang, Yingying)[ 1 ] ; Wang, Y (Wang, Yang)[ 1,2 ] ; Lu, LG (Lu, Longgang)[ 2 ] ; Zhang, B (Zhang, Bin)[ 2 ] ; Wang, CX (Wang, Chengxin)[ 2 ] ; He, B (He, Bin)[ 2 ] ; Wei, R (Wei, Ren)[ 1 ] ; Xu, DD (Xu, Dongdong)[ 1 ]*（許冬冬）; Hao, QL (Hao, Qingli)[ 2 ]; Liu, B (Liu, Ben)[ 1 ]*（劉犇）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China
[ 2 ] Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Peoples R China
LANGMUIR，202008,36(33),9668-9674
Engineering materials nanostructures is key for developing renewable energy technologies for lithium-ion batteries (LIBs) but remains a long-term research challenge. In this paper, heterostructured NiO/NiCo2O4 nanoprisms with a hierarchically hollow cavity and porous framework are rationally designed and further encapsulated in graphene oxide (NiO/NiCo2O4@GO) as a highly efficient anode nanomaterial for LIBs. Heterostructured NiO/NiCo2O4 hollow/porous nanoprisms are derived by the ionic exchange of Ni precursors with [Co(CN)(6)](3-) (CoNi-metal-organic framework (MOF)) and then annealed under air. The encapsulation is achieved by fast assembly of GO and NiO/NiCo2O4, Thanks to hierarchically hollow and porous nanostructure, heterostructured NiO/NiCo2O4, and overcoated GO, the NiO/NiCo2O4 electrode shows excellent electrochemical performance toward lithium storage, disclosing a large rate capacity of 468 mA h g(-1) at 3.0 A g(-1) and a good capacity retention of 561 mA h g(-1) 1 at 1 A g(-1) after 800 cycles. This work paves a facile ionic exchange method for the controllable construction of hierarchically hollow MOFs and their derived composite nanomaterials for various energy-related applications.
文章鏈接：
https://pubs.acs.org/doi/10.1021/acs.langmuir.0c00801
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