An Efficient Dual-Metal Single-Atom Catalyst for Bifunctional Catalysis in Zinc-air Batteries

Carbon ◽  
2021 ◽  
Author(s):  
Yiou Ma ◽  
Haiyun Fan ◽  
Chao Wu ◽  
Mingdao Zhang ◽  
Jianghua Yu ◽  
...  
Keyword(s):  
Single Atom ◽  
Bifunctional Catalysis ◽  
Dual Metal ◽  
Zinc Air Batteries

scholarly journals Recent Advances in Isolated Single-Atom Catalysts for Zinc Air Batteries: A Focus Review

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1402 ◽  
Author(s):  
Weimin Zhang ◽  
Yuqing Liu ◽  
Lipeng Zhang ◽  
Jun Chen
Keyword(s):  
Electrocatalytic Activity ◽  
High Performance ◽  
Rational Design ◽  
High Energy ◽  
Reduction Reaction ◽  
High Energy Density ◽  
Single Atom ◽  
Design And Synthesis ◽  
Dual Metal ◽  
Zinc Air Batteries

Recently, zinc–air batteries (ZABs) have been receiving attention due to their theoretically high energy density, excellent safety, and the abundance of zinc resources. Typically, the performance of the zinc air batteries is determined by two catalytic reactions on the cathode—the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). Therefore, intensive effort has been devoted to explore high performance electrocatalysts with desired morphology, size, and composition. Among them, single-atom catalysts (SACs) have emerged as attractive and unique systems because of their high electrocatalytic activity, good durability, and 100% active atom utilization. In this review, we mainly focus on the advance application of SACs in zinc air batteries in recent years. Firstly, SACs are briefly compared with catalysts in other scales (i.e., micro- and nano-materials). A main emphasis is then focused on synthesis and electrocatalytic activity as well as the underlying mechanisms for mono- and dual-metal-based SACs in zinc air batteries catalysis. Finally, a prospect is provided that is expected to guide the rational design and synthesis of SACs for zinc air batteries.

A new strategy for engineering a hierarchical porous carbon-anchored Fe single-atom electrocatalyst and the insights into its bifunctional catalysis for flexible rechargeable Zn–air batteries

2020 ◽  
Vol 8 (19) ◽  
pp. 9981-9990 ◽  
Author(s):  
Cheng Du ◽  
Yijing Gao ◽  
Jianguo Wang ◽  
Wei Chen
Keyword(s):  
Porous Carbon ◽  
Bifunctional Catalyst ◽  
Single Atom ◽  
Bifunctional Catalysis ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
New Strategy

A promising “confined recrystallization” method is developed for the fabrication of an Fe single-atom bifunctional catalyst for flexible rechargeable Zn–air batteries.

Fabrication of Nonmetal-Modulated Dual Metal–Organic Platform for Overall Water Splitting and Rechargeable Zinc–Air Batteries

2020 ◽  
Vol 12 (37) ◽  
pp. 41704-41717
Author(s):  
Alagan Muthurasu ◽  
Bipeen Dahal ◽  
Tanka Mukhiya ◽  
Kisan Chhetri ◽  
Hak Yong Kim
Keyword(s):  
Water Splitting ◽  
Overall Water Splitting ◽  
Metal Organic ◽  
Dual Metal ◽  
Zinc Air Batteries

Stone-Wales Defect-rich carbon-supported dual-metal single atom sites for Zn-air batteries

Nano Energy ◽  
2021 ◽  
pp. 106488
Author(s):  
Kishwar Khan ◽  
Xingxu Yan ◽  
Qiangmin Yu ◽  
Sang-Hoon Bae ◽  
Jessica Jein White ◽  
...  
Keyword(s):  
Single Atom ◽  
Wales Defect ◽  
Dual Metal

scholarly journals Atomic layer deposited Pt-Ru dual-metal dimers and identifying their active sites for hydrogen evolution reaction

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Lei Zhang ◽  
Rutong Si ◽  
Hanshuo Liu ◽  
Ning Chen ◽  
Qi Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Rational Design ◽  
Atomic Layer ◽  
Single Atom ◽  
Structure Model ◽  
Layer Deposition ◽  
Dual Metal ◽  
X Ray Absorption ◽  
Excellent Stability

Abstract Single atom catalysts exhibit particularly high catalytic activities in contrast to regular nanomaterial-based catalysts. Until recently, research has been mostly focused on single atom catalysts, and it remains a great challenge to synthesize bimetallic dimer structures. Herein, we successfully prepare high-quality one-to-one A-B bimetallic dimer structures (Pt-Ru dimers) through an atomic layer deposition (ALD) process. The Pt-Ru dimers show much higher hydrogen evolution activity (more than 50 times) and excellent stability compared to commercial Pt/C catalysts. X-ray absorption spectroscopy indicates that the Pt-Ru dimers structure model contains one Pt-Ru bonding configuration. First principle calculations reveal that the Pt-Ru dimer generates a synergy effect by modulating the electronic structure, which results in the enhanced hydrogen evolution activity. This work paves the way for the rational design of bimetallic dimers with good activity and stability, which have a great potential to be applied in various catalytic reactions.

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