کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6465615 1422952 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of unit-cell-thick α-Fe2O3 nanosheets and their transformation to γ-Fe2O3 nanosheets with enhanced LIB performances
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of unit-cell-thick α-Fe2O3 nanosheets and their transformation to γ-Fe2O3 nanosheets with enhanced LIB performances
چکیده انگلیسی


- Unit-cell thick α-Fe2O3 nanosheets with thickness of 1.3 nm were firstly synthesized.
- The nanosheets were synthesized through a metal-ion-intervened hydrothermal method.
- The α-Fe2O3 nanosheets were converted to magnetic γ-Fe2O3 nanosheets by a calcination process.
- The obtained magnetic γ-Fe2O3 nanosheets were with unit-cell thickness of 0.8 nm.
- The unit-cell-thick γ-Fe2O3 nanosheets exhibit great enhanced electrochemical performances.

The synthesis of ultrathin magnetic nanosheets is significant for the development of next-generation nanodevices but remains to be a big challenge. Herein, we present facile approaches for large-scaled production of cell-unit-thick single-crystalline iron oxide nanostructures. The ultrathin hematite (α-Fe2O3) nanosheets with unit-cell thickness of 1.3 nm are firstly synthesized using a metal-ion-intervened hydrothermal method. Then the α-Fe2O3 nanosheets are converted to magnetic maghemite (γ-Fe2O3) nanosheets with unit-cell thickness of 0.8 nm by a simple calcination process. The Li-ion battery studies reveal that unit-cell-thick γ-Fe2O3 nanosheets exhibit great enhanced electrochemical performances with high specific capacitance approaching to its theoretical value and excellent cycling stability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 326, 15 October 2017, Pages 292-297
نویسندگان
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