کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8012834 | 1517163 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Directly deposited porous two-dimensional MoS2 films as electrocatalysts for hydrogen evolution reactions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
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چکیده انگلیسی
Two-dimensional (2D) MoS2 has recently emerged as an efficient hydrogen evolution reaction (HER) catalyst due to its unique atomic layered structure and stability in harsh acidic environment. However, the high electrochemical performance of MoS2 is still limited to edges of its 2D layers. Here, we report the synthesis of highly porous MoS2 films exhibiting a large density of edge sites by using a direct sputter deposition method. Interestingly, the as-deposited MoS2 films resulted into a 3R phase with nano porous structure which is attributed to the lattice relaxation and high energy of sputtered ions. The as-synthesized porous MoS2 nanostructures demonstrate an excellent electrocatalytic performance with a low HER onset potential of â¼0.2â¯V, long-term cycling stability, and a low Tafel slope in the range of â¼80-90â¯mV/decade at a high cathodic current density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 225, 15 August 2018, Pages 65-68
Journal: Materials Letters - Volume 225, 15 August 2018, Pages 65-68
نویسندگان
Mumukshu D. Patel, Jibo Zhang, Juhong Park, Nitin Choudhary, James M. Tour, Wonbong Choi,