A precious-metal-free Fe-intercalated carbon nitride porous-network with enhanced activity for the oxygen reduction reaction and methanol-tolerant oxygen reduction reaction
التاريخ
2020المؤلف
Bin Yousaf, AmmarMonnier, John R.
Weidner, John W.
Hassan, Mohammad K.
Zaidi, Syed Javaid
Kasak, Peter
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البيانات الوصفية
عرض كامل للتسجيلةالملخص
The economical cost of the catalyst material has remained a challenging task in traditional fuel cells (FCs) and in direct methanol fuel cells (DMFCs). However, replacement of noble metals with precious metal-free materials as catalysts has raised issues regarding their performance. Among them, cathodic catalysts have unresolved issues regarding working conditions, where they must be resistant to the effect of fuel crossover from the anode to maintain stable electrochemical behavior. We have focused on multiple factors to address these challenges and contribute to the field of DMFC electrocatalysis and have successfully lowered the high cost of the usual Pt catalyst by developing a non-precious metal-based Fe-N-C material as the cathode catalyst. Organic polymers in combination with C and N-rich sources of organic acids constitute the highly active Fe-N-C precursor byin situintercalation of Fe, facilitated by pyrolysis. The C and N-rich additives help generate abundant Fe-Nxand N-C active sites for enhanced oxygen reduction reaction (ORR) under acidic and alkaline conditions and show a negligible decrease in activity after 2000 scan cycles. Moreover, the active sites for ORR electrocatalysis showed excellent stability for methanol tolerance, thereby resulting in enhanced and durable performance for DMFCs as well as for PEMFC systems.
المجموعات
- الأبحاث [1349 items ]
وثائق ذات صلة
عرض الوثائق المتصلة بواسطة: العنوان، المؤلف، المنشئ والموضوع.
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Method to prepare ternary methanol electro-oxidation catalysts for direct methanol fuel cell applications
Yousaf, Ammar Bin; Mukhtar, B.; Al-Ahmed, Amir; Zaidi, Syed Javaid ( Electrochemical Society, Inc. , 2017 , Article)In this work ternary methanol electro-oxidation catalysts based on mesoporous carbon (MC) were prepared by a novel approach for direct methanol fuel cell applications. Platinum (Pt), ruthenium (Ru) along with oxides of ... -
Highly efficient methanol oxidation reaction on durable Co9S8 @N, S-doped CNT catalyst for methanol fuel cell applications
Ashok, Anchu; Kumar, Anand; Yuda, Afdhal; Al Ashraf, Abdullah ( Elsevier Ltd , 2022 , Article)The implementation of direct methanol fuel cells is seen as a reliable factor in the future energy mix. Efficient energy conversion from methanol requires an active and durable catalyst to drive the anodic methanol oxidation ... -
Mesoporous carbon supported Pt/MO2 (M=Ce, Pr, Nd, Sm) heteronanostructure: Promising non-Ru methanol oxidation reaction catalysts for direct methanol fuel cell application
Zaidi, Syed Javaid; Bello, Mukhtar; Al-Ahmed, Amir; Bin Yousaf, Ammar; Imrand, M. ( Elsevier B.V. , 2017 , Article)Direct methanol fuel cells (DMFCs) proved to be promising alternative for renewable energy resources. There are several factors involved for the hindrance of their commercialization. Herein, the alteration in catalyst's ...