Large‐scale Synthesis of Porous Pt Nanospheres /Three‐dimensional Graphene Hybrid Materials as a Highly Active and Stable Electrocatalyst for Oxygen Reduction Reaction

2021 ◽  
Vol 6 (9) ◽  
pp. 2080-2084
Author(s):  
Shuqi Hu ◽  
Xiaolan Li ◽  
Asad Ali ◽  
Xinyi Zhang ◽  
Pei Kang Shen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hybrid Materials ◽  
Large Scale ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Highly Active ◽  
Large Scale Synthesis

Sodium chloride-assisted green synthesis of a 3D Fe–N–C hybrid as a highly active electrocatalyst for the oxygen reduction reaction

2016 ◽  
Vol 4 (20) ◽  
pp. 7781-7787 ◽  
Author(s):  
Yun Zhang ◽  
Lin-Bo Huang ◽  
Wen-Jie Jiang ◽  
Xing Zhang ◽  
Yu-Yun Chen ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Oxygen Reduction Reaction ◽  
Green Synthesis ◽  
Small Molecules ◽  
Oxygen Reduction ◽  
High Activity ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Carbon Nanosheets ◽  
Highly Active

A three-dimensional hybrid of carbon nanosheets and nanotubes preparedviaa recyclable NaCl-assisted pyrolysis of small molecules exhibits high activity for the ORR.

Work function-tailored graphene via transition metal encapsulation as a highly active and durable catalyst for the oxygen reduction reaction

2019 ◽  
Vol 12 (7) ◽  
pp. 2200-2211 ◽  
Author(s):  
Monika Sharma ◽  
Jue-Hyuk Jang ◽  
Dong Yun Shin ◽  
Jeong An Kwon ◽  
Dong-Hee Lim ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Work Function ◽  
Oxygen Reduction ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Design Concept ◽  
Highly Active ◽  
Novel Design

A novel design concept of a three-dimensional graphene shell encapsulated cobalt nanostructure as a new route to tune the work function of graphene for enhanced ORR.

scholarly journals Electrospinning Synthesis of Carbon-Supported Pt3Mn Intermetallic Nanocrystals and Electrocatalytic Performance towards Oxygen Reduction Reaction

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1893
Author(s):  
Lechao Peng ◽  
Lan Zhou ◽  
Wenjun Kang ◽  
Rui Li ◽  
Konggang Qu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Large Scale ◽  
Reduction Reaction ◽  
Cathode Catalysts ◽  
Highly Active ◽  
New Strategy ◽  
Catalytic Stability ◽  
The Cost ◽  
Positive Half

To realize the large-scale application of fuel cells, it is still a great challenge to improve the performance and reduce the cost of cathode catalysts towards oxygen reduction reaction (ORR). In this work, carbon-supported ordered Pt3Mn intermetallic catalysts were prepared by thermal annealing electrospun polyacrylonitrile nanofibers containing Platinum(II) acetylacetonate/ Manganese(III) acetylacetonate. Compared with its counterparts, the ordered Pt3Mn intermetallic obtained at 950 °C exhibits a more positive half-potential and higher kinetic current density during the ORR process. Benefiting from their defined stoichiometry and crystal structure, the Mn atoms in Pt3Mn intermetallic can modulate well the geometric and electronic structure of surface Pt atoms, endowing Pt3Mn catalyst with an enhanced ORR catalytic activity. Moreover, it also has a better catalytic stability and methanol tolerance than commercial Pt/C catalyst. Our study provides a new strategy to fabricate a highly active and durable Pt3Mn intermetallic electrocatalyst towards ORR.

scholarly journals Electrocatalysis for Oxygen Reduction Reaction on EDTAFeNa and Melamine co-Derived Self-Supported Fe-N-C Materials

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 623
Author(s):  
Mengfan Shen ◽  
Ziwei Meng ◽  
Tong Xue ◽  
Hongfang Shen ◽  
Xiang-Hui Yan
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Large Scale ◽  
Acid Leaching ◽  
Reduction Reaction ◽  
Scale Production ◽  
Final Annealing ◽  
High Performing ◽  
Half Wave ◽  
Mesoscopic Structure

To explore high-performing alternatives to platinum-based catalysts is highly desirable for lowering costs and thus promoting fuel cell commercialization. Herein, self-supported Fe-N-C materials were prepared by the pyrolysis of dual precursors including EDTA ferric sodium (EDTAFeNa) and melamine (MA), followed by acid-leaching and final annealing. Towards an oxygen reduction reaction (ORR) in 0.1 M KOH, the as-prepared MA/EDTAFeNa-HT2 delivered onset (Eonset) and half-wave (E1/2) potentials of 0.97 and 0.84 V vs. RHE, respectively, identical with that of a state-of-the-art Pt/C catalyst, accompanied with predominantly a four-electron pathway. The introduction of MA and extension of acid-leaching promoted a positive shift of 50 mV for E1/2 relative to that of only the EDTAFeNa-derived counterpart. It was revealed that the enhancement of ORR activity is attributed to a decrease in magnetic Fe species and increase in pyridinic/quanternary nitrogen content whilst nearly excluding effects of the graphitization degree, variety of crystalline iron species, and mesoscopic structure. The usage of dual precursors exhibited great potential for the large-scale production of inexpensive and efficient Fe-N-C materials.

Theoretical Modelling and Facile Synthesis of a Highly Active Boron-Doped Palladium Catalyst for the Oxygen Reduction Reaction

2016 ◽  
Vol 55 (24) ◽  
pp. 6842-6847 ◽  
Author(s):  
Tat Thang Vo Doan ◽  
Jingbo Wang ◽  
Kee Chun Poon ◽  
Desmond C. L. Tan ◽  
Bahareh Khezri ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Palladium Catalyst ◽  
Reduction Reaction ◽  
Theoretical Modelling ◽  
Facile Synthesis ◽  
Highly Active ◽  
Boron Doped

Tunable mesoporous manganese oxide for high performance oxygen reduction and evolution reactions

2016 ◽  
Vol 4 (2) ◽  
pp. 620-631 ◽  
Author(s):  
Islam M. Mosa ◽  
Sourav Biswas ◽  
Abdelhamid M. El-Sawy ◽  
Venkatesh Botu ◽  
Curtis Guild ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Manganese Oxide ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Reduction Reaction ◽  
Noble Metal Catalysts ◽  
Highly Active ◽  
State Of Art

Understanding the origin of manganese oxide activity for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is a key step towards rationally designing of highly active catalysts capable of competing with the widely used, state-of-art noble metal catalysts.

Graphene aerogel-supported and graphene quantum dots-modified γ-MnOOH nanotubes as a highly efficient electrocatalyst for oxygen reduction reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43116-43126 ◽  
Author(s):  
Yisi Liu ◽  
Wenzhang Li ◽  
Jie Li ◽  
Haibo Shen ◽  
Yaomin Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Graphene Quantum Dots ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Graphene Aerogel ◽  
3D Graphene ◽  
Highly Efficient

In this work, we demonstrate a facile strategy to synthesize a novel three-dimensional (3D) graphene aerogel-supported and graphene quantum dots-modified γ-MnOOH nanotubes as a highly efficient electrocatalyst.

Hollow PtCo Nanowires with Rough Surfaces as Highly Active Electrocatalysts for Oxygen Reduction Reaction

2021 ◽  
Vol 6 (22) ◽  
pp. 5399-5405
Author(s):  
Jincheng Wang ◽  
Chuang Li ◽  
Wenjun Zhu ◽  
Jipeng Meng ◽  
Changhai Liang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Rough Surfaces ◽  
Reduction Reaction ◽  
Highly Active

Highly active bimetallic CuFe–N–C electrocatalysts for oxygen reduction reaction in alkaline media

2019 ◽  
Vol 71 ◽  
pp. 234-241 ◽  
Author(s):  
Yun Sik Kang ◽  
Yoonhye Heo ◽  
Jae Young Jung ◽  
Yeonsun Sohn ◽  
Soo-Hyoung Lee ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Highly Active
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