کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8070782 1521388 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nitrogen and cobalt-doped porous biocarbon materials derived from corn stover as efficient electrocatalysts for aluminum-air batteries
ترجمه فارسی عنوان
مواد زیستی کربن متخلخل نیتروژن و کبالت حاصل از ذرت به عنوان الکتروکاتالیستور کارآمد برای باتری آلومینیوم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
Development of convenient, economic and large scale catalysts for oxygen reduction reaction (ORR) in alkaline medium is of great significance to practical applications of aluminum-air batteries. Herein, a corn-stover-derived, nitrogen and cobalt co-doped porous biocarbon material has been prepared and utilized as ORR catalysts in aluminum-air batteries. The resultant product (NCAC-Co) exhibits an interconnected hierarchical porous structure with a high specific surface area (1877.3 m2 g−1). The electrocatalytic characterization of NCAC-Co reveals a half-wave potential (0.743 V vs. RHE) only slightly lower than that of commercial Pt/C (0.793 V vs. RHE) in alkaline medium. Moreover, NCAC-Co also demonstrates the mechanism of 4-electron oxygen reduction (n = 3.87) and outstanding durability. The excellent ORR performance of NCAC-Co can be attributed to the presence of pyridinic N, graphitic N and Co nanoparticles as well as the interconnected hierarchical porous structure. More importantly, NCAC-Co also delivers a good behavior when applied in aluminum-air batteries. The work presented herein shows the NCAC-Co derived from corn stover holds good promise to be an alternative of economic and large scale catalysts for metal-air batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 162, 1 November 2018, Pages 453-459
نویسندگان
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