Ordered Mesoporous Metallic MoO2 Materials with Highly Reversible Lithium Storage Capacity
Ordered Mesoporous Metallic MoO2 Materials with Highly Reversible Lithium Storage Capacity
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DOI：
10.1021/nl902423a
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发表时间：
2009-12-01
期刊：
影响因子：
10.8
通讯作者：
Stucky, Galen D.
中科院分区：
文献类型：
--
作者：
Shi, Yifeng;Guo, Bingkun;Stucky, Galen D.
以磷钼酸为前驱体，介孔二氧化硅KIT-6为硬模板，在10%的H-2气氛中采用纳米铸造策略合成了具有双连续Ia3d介孔结构的高有序介孔MoO2晶体材料。所制备的介孔MoO2材料表现出典型的低电阻率金属导电性（300 K时电阻率约为0.01 ω cm），与以往报道的所有介孔金属氧化物材料不同。初步测试发现，在C/20循环30次后，介孔MoO2材料的可逆电化学锂存储容量高达750 mA h g(-1)，是一种很有前景的锂离子电池负极材料。
Highly ordered mesoporous crystalline MoO2 materials with bicontinuous Ia3d mesostructure were synthesized by using phosphomolybdic acid as a precursor and mesoporous silica KIT-6 as a hard template in a 10% H-2 atmosphere via nanocasting strategy. The prepared mesoporous MoO2 material shows a typical metallic conductivity with a low resistivity (similar to 0.01 Omega cm at 300 K), which makes it different from all previously reported mesoporous metal oxides materials. Primary test found that mesoporous MoO2 material exhibits a reversible electrochemical lithium storage capacity as high as 750 mA h g(-1) at C/20 after 30 cycles, rendering it as a promising anode material for lithium ion batteries.