کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7725053 1497842 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Layer-by-layer self-assembled two-dimensional MXene/layered double hydroxide composites as cathode for alkaline hybrid batteries
ترجمه فارسی عنوان
کامپوزیت هیدروکسید دو بعدی دو لایه کامپوزیت هیدروکسید دو لایه به صورت لایه ای به عنوان کاتد برای باتری های هیبریدی قلیایی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Multifarious layered materials have received extensive concern in the field of energy storage due to their distinctive two-dimensional (2D) structure. However, the natural tendency to be re-superimposed and the inherent disadvantages of a single 2D material significantly limit their performance. In this work, the delaminated Ti3C2Tx (d-Ti3C2Tx)/cobalt-aluminum layered double hydroxide (Ti3C2Tx/CoAl-LDH) composites are prepared by layer-by-layer self-assembly driven by electrostatic interaction. The alternate Ti3C2Tx and CoAl-LDH layers prevent each other from restacking and the obtained Ti3C2Tx/CoAl-LDH heterostructure combine the advantages of high electron conductivity of Ti3C2Tx and high electrochemical activity of CoAl-LDH, thus effectively improving the electrochemical reactivity of electrode materials and accelerating the kinetics of Faraday reaction. As a consequence, as a cathode for alkaline hybrid battery, the Ti3C2Tx/CoAl-LDH electrode exhibits a high specific capacity of 106 mAh g−1 at a current density of 0.5 A g−1 and excellent rate capability (78% at 10 A g−1), with an excellent cycling stability of 90% retention after 5000 cycles at 4 A g−1. This work provides an alternative route to design advanced 2D electrode materials, thus exploiting their full potentials for alkaline hybrid batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 390, 30 June 2018, Pages 208-214
نویسندگان
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