title: Synthesis of Mesoporous Single Crystal Co(OH)2 Nanoplate and Its Topotactic Conversion to Dual-Pore Mesoporous Single Crystal Co3O4.
abstract: A new class of mesoporous single crystalline (MSC) material, Co(OH)2 nanoplates, is synthesized by a soft template method, and it is topotactically converted to dual-pore MSC Co3O4. Most mesoporous materials derived from the soft template method are reported to be amorphous or polycrystallined; however, in our synthesis, Co(OH)2 seeds grow to form single crystals, with amphiphilic block copolymer F127 colloids as the pore producer. The single-crystalline nature of material can be kept during the conversion from Co(OH)2 to Co3O4, and special dual-pore MSC Co3O4 nanoplates can be obtained. As the anode of lithium-ion batteries, such dual-pore MSC Co3O4 nanoplates possess exceedingly high capacity as well as long cyclic performance (730 mAh g(-1) at 1 A g(-1) after the 350th cycle). The superior performance is because of the unique hierarchical mesoporous structure, which could significantly improve Li(+) diffusion kinetics, and the exposed highly active (111) crystal planes are in favor of the conversion reaction in the charge/discharge cycles.
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Bao-Rui
authors.initials: BR
authors.lastname: Jia
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Ming-Li
authors.initials: ML
authors.lastname: Qin
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Shu-Mei
authors.initials: SM
authors.lastname: Li
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Zi-Li
authors.initials: ZL
authors.lastname: Zhang
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Hui-Feng
authors.initials: HF
authors.lastname: Lu
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Peng-Qi
authors.initials: PQ
authors.lastname: Chen
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Hao-Yang
authors.initials: HY
authors.lastname: Wu
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Institute for Advanced Materials and Technology, University of Science and Technology Beijing , 30 Xueyuan Road, Haidian District, 100083, Beijing, P.R. China.
authors.forename: Xuan-Hui
authors.initials: XH
authors.lastname: Qu
keywords: Co(OH)2; Co3O4; Li-ion batteries; mesoporous single crystal; soft template; topotactic conversion