Evaluation of silver-incorporating zeolites as bifunctional electrocatalysts for direct borohydride fuel cells

2019 ◽  
Vol 43 (36) ◽  
pp. 14270-14280 ◽  
Author(s):  
Jadranka Milikić ◽  
Raisa C. P. Oliveira ◽  
Ivan Stoševski ◽  
Jugoslav Krstić ◽  
Radmila Hercigonja ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
High Activity ◽  
Oxidation Reaction ◽  
Low Cost ◽  
Bifunctional Electrocatalysts ◽  
Direct Borohydride Fuel Cells ◽  
Borohydride Oxidation

Low cost zeolites with incorporated silver show high activity for both oxygen reduction and borohydride oxidation reaction.

Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

2018 ◽  
Vol 42 (3) ◽  
pp. 2081-2088 ◽  
Author(s):  
Man Zhang ◽  
Wei Hong ◽  
Ruinan Xue ◽  
Lingzhi Li ◽  
Guanbo Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Low Cost ◽  
Reduction Reaction ◽  
Reduced Graphene

At present, low-cost and efficient electrocatalysts for accelerating the oxygen reduction reaction in fuel cells are highly desired.

Trimetallic PtNiCo branched nanocages as efficient and durable bifunctional electrocatalysts towards oxygen reduction and methanol oxidation reactions

2021 ◽  
Author(s):  
hengrui Ma ◽  
Zhiping Zheng ◽  
Hongsheng Zhao ◽  
Cong Shen ◽  
Hanming Chen ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Reduction Reaction ◽  
Great Promise ◽  
Methanol Oxidation Reaction ◽  
Oxidation Reactions ◽  
Bifunctional Electrocatalysts ◽  
Composition And Structure

Engineering the composition and structure of Pt-based alloy electrocatalysts has exhibited great promise for enhancing activity and durability in oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). However, it...

scholarly journals N-doped carbon nanomaterials are durable catalysts for oxygen reduction reaction in acidic fuel cells

2015 ◽  
Vol 1 (1) ◽  
pp. e1400129 ◽  
Author(s):  
Jianglan Shui ◽  
Min Wang ◽  
Feng Du ◽  
Liming Dai
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
Clean Energy ◽  
Pem Fuel Cells ◽  
Reduction Reaction ◽  
Metal Free ◽  
Carbon Based

The availability of low-cost, efficient, and durable catalysts for oxygen reduction reaction (ORR) is a prerequisite for commercialization of the fuel cell technology. Along with intensive research efforts of more than half a century in developing nonprecious metal catalysts (NPMCs) to replace the expensive and scarce platinum-based catalysts, a new class of carbon-based, low-cost, metal-free ORR catalysts was demonstrated to show superior ORR performance to commercial platinum catalysts, particularly in alkaline electrolytes. However, their large-scale practical application in more popular acidic polymer electrolyte membrane (PEM) fuel cells remained elusive because they are often found to be less effective in acidic electrolytes, and no attempt has been made for a single PEM cell test. We demonstrated that rationally designed, metal-free, nitrogen-doped carbon nanotubes and their graphene composites exhibited significantly better long-term operational stabilities and comparable gravimetric power densities with respect to the best NPMC in acidic PEM cells. This work represents a major breakthrough in removing the bottlenecks to translate low-cost, metal-free, carbon-based ORR catalysts to commercial reality, and opens avenues for clean energy generation from affordable and durable fuel cells.

scholarly journals Mesoporous Nanocast Electrocatalysts for Oxygen Reduction and Oxygen Evolution Reactions

Inorganics ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 98 ◽  
Author(s):  
Tatiana Priamushko ◽  
Rémy Guillet-Nicolas ◽  
Freddy Kleitz
Keyword(s):  
Oxygen Reduction ◽  
High Activity ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Noble Metals ◽  
Low Cost ◽  
High Surface ◽  
Clean Energy ◽  
Production Costs ◽  
Synthesis Methods

Catalyzed oxygen evolution and oxygen reduction reactions (OER and ORR, respectively) are of particular significance in many energy conversion and storage processes. During the last decade, they emerged as potential routes to sustain the ever-growing needs of the future clean energy market. Unfortunately, the state-of-the-art OER and ORR electrocatalysts, which are based on noble metals, are noticeably limited by a generally high activity towards one type of reaction only, high costs and relatively low abundance. Therefore, the development of (bi)functional low-cost non-noble metal or metal-free electrocatalysts is expected to increase the practical energy density and drastically reduce the production costs. Owing to their pore properties and high surface areas, mesoporous materials show high activity towards electrochemical reactions. Among all synthesis methods available for the synthesis of non-noble mesoporous metal oxides, the hard-templating (or nanocasting) approach is one of the most attractive in terms of achieving variable morphology and porosity of the materials. In this review, we thus focus on the recent advances in the design, synthesis, characterization and efficiency of non-noble metal OER and ORR electrocatalysts obtained via the nanocasting route. Critical aspects of these materials and perspectives for future developments are also discussed.

Al-doped nickel sulfide nanosheet arrays as highly efficient bifunctional electrocatalysts for overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (47) ◽  
pp. 24244-24250
Author(s):  
Wenjun He ◽  
Fangqing Wang ◽  
Dongbo Jia ◽  
Ying Li ◽  
Limin Liang ◽  
...  
Keyword(s):  
High Activity ◽  
Water Splitting ◽  
Precious Metal ◽  
Nickel Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen

The development of low-cost, high-activity, durable non-precious metal bifunctional electrocatalysts is of great importance in the production of hydrogen by water electrolysis.

Cobalt single-atoms anchored on porphyrinic triazine-based frameworks as bifunctional electrocatalysts for oxygen reduction and hydrogen evolution reactions

2019 ◽  
Vol 7 (3) ◽  
pp. 1252-1259 ◽  
Author(s):  
Jun-Dong Yi ◽  
Rui Xu ◽  
Guo-Liang Chai ◽  
Teng Zhang ◽  
Ketao Zang ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Single Atoms ◽  
Bifunctional Electrocatalysts ◽  
Hydrogen Evolution Reactions

Cobalt single atoms anchored on porphyrinic triazine frameworks exhibit high activity in ORR and HER.

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