کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6609066 459549 2016 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
TiO2 mesoporous single crystals with controllable architectures and TiO2/graphene oxide nanocomposites for high-performance lithium ion battery anodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
TiO2 mesoporous single crystals with controllable architectures and TiO2/graphene oxide nanocomposites for high-performance lithium ion battery anodes
چکیده انگلیسی
TiO2 mesoporous single crystals (MSCs) with diverse constructions in a controllable fashion are successfully fabricated by a new template-free method for the first time, using oxalic acid (OA) as the pore-forming agent and morphological controller. Unlike the seeding-template based growth mechanism, the TiO2 MSCs in the present work may involve a process of oriented aggregation and crystallographic fusion of primary nanocrystals. The structural control of TiO2 MSCs can be easily realized by tailoring growth conditions, such as Ti-source concentration and OA dosages. Moreover, the TiO2 MSCs shows substantial improvement in lithium specific capacity from 0.2 C to 10 C in comparison to the reference TiO2 nanoparticle. The high-rate performance was further improved by fabricating MSCs/graphene oxide nanocomposites, and specific capacity of the composite at the rate of 20C is as high as 90 mA h g−1. This new template-free strategy may open up new and exciting opportunities for the preparation of other MSCs, and makes important applicatory significance for the structure design of high-rate lithium ion battery anodes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 190, 1 February 2016, Pages 25-32
نویسندگان
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