In Situ Anchoring Co–N–C Nanoparticles on Co4N Nanosheets toward Ultrastable Flexible Self‐Supported Bifunctional Oxygen Electrocatalyst Enables Recyclable Zn–Air Batteries Over 10 000 Cycles and Fast Charging Article Swipe
Tong Liu
,
Siyuan Zhao
,
Ying Wang
,
Jie Yu
,
Yawen Dai
,
Jian Wang
,
Xiaoxu Sun
,
Kaihua Liu
,
Meng Ni
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.1002/smll.202105887
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.1002/smll.202105887
Zn–air batteries (ZABs) are very promising for flexible energy storage, but their application is limited to the primary battery. Developing an efficient and non‐noble metal cathode toward oxygen reduction/evolution reactions (ORR/OER) is of great significance for the commercial application of rechargeable ZABs. Herein, a flexible self‐supported integrated bifunctional cathode is presented in which the Co–N–C nanoparticles are in situ anchored on Co 4 N nanosheets via a facile and scalable strategy. Benefiting from integrated 3D architecture with adequate active sites, porous structure, high conductivity originating from the metal substrate, and the synergistic effects of Co–N–C and Co 4 N, the cathode exhibits excellent bifunctional activity (low overpotential of 275 mV at 10 mA cm −2 for OER, high half‐wave potential of 0.833 V for ORR), and ultralong durability for ORR/OER in the alkaline medium. Impressively, this cathode enables the recyclable aqueous ZABs a record overall lifespan over 10 000 cycles at 20 mA cm −2 , and a superior fast‐charging feature at an ultrahigh charging current density of 100 mA cm −2 . Furthermore, such a flexible integrated cathode can be directly used as a self‐supported cathode for flexible solid‐state ZABs, with excellent reversibility for 300 cycles, demonstrating its feasibility for practical application.
Related Topics
Concepts
Bifunctional
Overpotential
Cathode
Materials science
Electrocatalyst
Oxygen evolution
Nanoparticle
Chemical engineering
Nanotechnology
Battery (electricity)
Catalysis
Electrode
Electrochemistry
Chemistry
Organic chemistry
Physical chemistry
Power (physics)
Physics
Engineering
Quantum mechanics
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/smll.202105887
- OA Status
- green
- Cited By
- 32
- References
- 63
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4200587405
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4200587405Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/smll.202105887Digital Object Identifier
- Title
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In Situ Anchoring Co–N–C Nanoparticles on Co4N Nanosheets toward Ultrastable Flexible Self‐Supported Bifunctional Oxygen Electrocatalyst Enables Recyclable Zn–Air Batteries Over 10 000 Cycles and Fast ChargingWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2021Year of publication
- Publication date
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2021-12-09Full publication date if available
- Authors
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Tong Liu, Siyuan Zhao, Ying Wang, Jie Yu, Yawen Dai, Jian Wang, Xiaoxu Sun, Kaihua Liu, Meng NiList of authors in order
- Landing page
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https://doi.org/10.1002/smll.202105887Publisher landing page
- Open access
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YesWhether a free full text is available
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greenOpen access status per OpenAlex
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https://ira.lib.polyu.edu.hk/bitstream/10397/94655/2/Liu_Anchoring_Co-N-C_Nanoparticles.pdfDirect OA link when available
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Bifunctional, Overpotential, Cathode, Materials science, Electrocatalyst, Oxygen evolution, Nanoparticle, Chemical engineering, Nanotechnology, Battery (electricity), Catalysis, Electrode, Electrochemistry, Chemistry, Organic chemistry, Physical chemistry, Power (physics), Physics, Engineering, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
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32Total citation count in OpenAlex
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2025: 5, 2024: 8, 2023: 11, 2022: 8Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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