Synergistically enhanced iron and zinc bimetallic sites as an advanced ORR electrocatalyst for flow liquid rechargeable Zn–air batteries

Wang, Zhida; Liang, Song; Bai, Chengkun; Guo, Zhong-Feng; Lu, Guolong; Sun, Hang; Liu, Zhenning; Zang, Hong‐Ying

doi:10.1039/d1ta09678h

Cited by 15 publications

(5 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high-resolution C 1s spectrum of Co-CoN 4 @NCNs (Figure S9b, Supporting Information) can be deconvoluted into four peaks corresponding to the CC (284.7 V), CN (285.8 V), CO (287.3 V), and OCOH (288.2 V) bonds, respectively. [41] The existence of CN bonds is favorable for the adsorption of oxygen-containing intermediates on the surface of the Co-CoN 4 @NCNs catalyst. [42] The highresolution Co 2p spectrum of Co-CoN 4 @NCNs (Figure 3d) presents four cobalt-bearing components, including Co 0 (780.1 and 795.4 eV), [43] Co 2+ (783.4 and 798.1 eV), [44] CoN (781.4 and 796.7 eV), [45] and a shake-up satellite (786.8 and 802.5 eV).…”

Section: Fabrication and Characterization Of The Co-con4@ncns Catalystmentioning

confidence: 99%

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Ding

Luo

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

The rational design of bifunctional catalysts with excellent activity and stability toward the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is essential for rechargeable Zn-air batteries (ZABs). In this study, a facile coordination bridging strategy is proposed to construct bifunctional Co-CoN 4 hybrid active sites embedded in porous N-rich carbon nanolamellas (denoted as Co-CoN 4 @NCNs) for both the ORR and OER. Synchrotron X-ray absorption spectroscopy and density functional theory calculations reveal that the increased intrinsic ORR/OER activities can be attributed to the efficient interfacial charge transfer between the atomic CoN sites and metallic Co sites due to their robust electronic correlation. In situ Raman spectroscopy confirms that the OER activity depends on the CoOOH intermediates formed during the reaction. Co-CoN 4 @NCNs exhibits superior bifunctional catalytic performance for the ORR (E 1/2 = 0.83 V) and OER (η = 310 mV at 10 mA cm −2 ) conducted in alkaline media. The assembled rechargeable Co-CoN 4 @NCNs-based ZAB displays an open-circuit voltage of 1.47 V, peak power density of 118.8 mW cm −2 , specific capacity of 776.7 mAh g −1 , and outstanding cycling stability over 1500 cycles. The regulation of the interfacial electronic properties can contribute to the rational design of bifunctional electrocatalysts used in rechargeable metal-air batteries.

show abstract

Section: Fabrication and Characterization Of The Co-con4@ncns Catalystmentioning

confidence: 99%

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Ding

Luo

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…This was mainly attributed to the following unique merits. First, the increased specific surface area of 30-ZnMn-NC played a crucial role in enhancing the exposure of active sites, resulting in an improved contact between reactants and active sites. , Second, adjacent metals on N-doped carbon substrates typically transfer electrons to the support, which helps to improve the catalyst’s Fermi level and optimize the reaction energy barrier . Lastly, the bimetallic Mn/Zn-N active sites generated by appropriate Mn element doping played a crucial role in synergistically enhancing the ORR activity .…”

Section: Results and Discussionmentioning

confidence: 99%

Mn-Doped Zn Metal–Organic Framework-Derived Porous N-Doped Carbon Composite as a High-Performance Nonprecious Electrocatalyst for Oxygen Reduction and Aqueous/Flexible Zinc–Air Batteries

Wang

et al. 2023

Inorg. Chem.

View full text Add to dashboard Cite

Developing low-cost, efficient, and stable oxygen reduction reaction (ORR) electrocatalysts is crucial for the commercialization of energy conversion devices such as metal–air batteries. In this study, we report a Mn-doped Zn metal–organic framework-derived porous N-doped carbon composite (30-ZnMn-NC) as a high-performance ORR catalyst. 30-ZnMn-NC exhibits excellent electrocatalytic activity, demonstrating a kinetic current density of 9.58 mA cm–2 (0.8 V) and a half-wave potential of 0.83 V, surpassing the benchmark Pt/C and most of the recently reported non-noble metal-based catalysts. Moreover, the assembled zinc–air battery with 30-ZnMn-NC demonstrates high peak power densities of 207 and 66.3 mW cm–2 in liquid and flexible batteries, respectively, highlighting its potential for practical applications. The excellent electrocatalytic activity of 30-ZnMn-NC is attributed to its unique porous structure, the strong electronic interaction between metal Zn/Mn and adjacent N-doped carbon, as well as the bimetallic Mn/Zn–N active sites, which synergistically promote faster reaction kinetics. This work offers a controllable design strategy for efficient electrocatalysts with porous structures and bimetallic active sites, which can significantly enhance the performance of energy conversion devices.

show abstract

“…S7 †). 52 Additionally, the OER catalytic properties of these catalysts were evaluated using linear sweep voltammetry (LSV) in the 1 M KOH solution. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Atomically dispersed Fe/Co dual site electrocatalysts derived from covalent triazine frameworks for boosting oxygen reduction

Dun

Huang

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Synergistically enhanced iron and zinc bimetallic sites as an advanced ORR electrocatalyst for flow liquid rechargeable Zn–air batteries

Abstract: N-coordinated transition-metal materials are promising electrocatalysts for various sustainable and efficient electrochemical energy conversion and storage devices. Here we reported a simple synthetic route of simultaneously crafting Fe and Zn...

Cited by 15 publications

References 47 publications

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Mn-Doped Zn Metal–Organic Framework-Derived Porous N-Doped Carbon Composite as a High-Performance Nonprecious Electrocatalyst for Oxygen Reduction and Aqueous/Flexible Zinc–Air Batteries

Atomically dispersed Fe/Co dual site electrocatalysts derived from covalent triazine frameworks for boosting oxygen reduction

Contact Info

Product

Resources

About

Synergistically enhanced iron and zinc bimetallic sites as an advanced ORR electrocatalyst for flow liquid rechargeable Zn–air batteries

Abstract: N-coordinated transition-metal materials are promising electrocatalysts for various sustainable and efficient electrochemical energy conversion and storage devices. Here we reported a simple synthetic route of simultaneously crafting Fe and Zn...

Cited by 15 publications

References 47 publications

Robust Electronic Correlation of Co‐CoN4 Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Robust Electronic Correlation of Co‐CoN4 Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Mn-Doped Zn Metal–Organic Framework-Derived Porous N-Doped Carbon Composite as a High-Performance Nonprecious Electrocatalyst for Oxygen Reduction and Aqueous/Flexible Zinc–Air Batteries

Atomically dispersed Fe/Co dual site electrocatalysts derived from covalent triazine frameworks for boosting oxygen reduction

Contact Info

Product

Resources

About

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries

Robust Electronic Correlation of Co‐CoN₄ Hybrid Active Sites for Durable Rechargeable Zn‐Air Batteries