RETRACTED: A universal cooperative assembly-directed method for coating of mesoporous TiO(2) nanoshells with enhanced lithium storage properties.
RETRACTED: A universal cooperative assembly-directed method for coating of mesoporous TiO(2) nanoshells with enhanced lithium storage properties.
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DOI：
10.1126/sciadv.1501554
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发表时间：
2016-03
期刊：
影响因子：
13.6
通讯作者：
Lou XW
中科院分区：
文献类型：
--
作者：
Guan BY;Yu L;Li J;Lou XW
发展了一种在不同功能粒子上生长介观结构TiO 2壳层的通用协同组装方法。TiO 2是非常有用的，但它仍然是一个巨大的挑战，以开发一种通用的方法来涂覆TiO 2纳米壳在不同的功能材料。我们报道了一种一锅法，低温，和简便的方法，可以快速形成介孔TiO 2壳各种无机，有机，无机-有机复合材料，包括硅基，金属，金属氧化物，有机聚合物，碳基，和金属-有机骨架纳米材料通过合作组装导向策略。在构建中空，核-壳，蛋黄-壳几何形状，无定形和结晶二氧化钛纳米壳表现出良好的控制。当用作锂离子电池的电极材料时，这些由非常小的纳米晶体组成的结晶TiO 2纳米壳在超过1000次循环中表现出显著的长期循环稳定性。电化学性能测试表明，这种TiO 2纳米壳是一种很有前途的阳极材料。
A universal cooperative assembly method is developed for growing mesostructured TiO2 shells on diverse functional particles. TiO2 is exceptionally useful, but it remains a great challenge to develop a universal method to coat TiO2 nanoshells on different functional materials. We report a one-pot, low-temperature, and facile method that can rapidly form mesoporous TiO2 shells on various inorganic, organic, and inorganic-organic composite materials, including silica-based, metal, metal oxide, organic polymer, carbon-based, and metal-organic framework nanomaterials via a cooperative assembly-directed strategy. In constructing hollow, core-shell, and yolk-shell geometries, both amorphous and crystalline TiO2 nanoshells are demonstrated with excellent control. When used as electrode materials for lithium ion batteries, these crystalline TiO2 nanoshells composed of very small nanocrystals exhibit remarkably long-term cycling stability over 1000 cycles. The electrochemical properties demonstrate that these TiO2 nanoshells are promising anode materials.