Revealing Cathode–Electrolyte Interface on Flower‐Shaped Na 3 V 2 (PO 4 ) 3 /C Cathode through Cryogenic Electron Microscopy
Open accessAbstract
The electrode–electrolyte interfaces play a critical role in influencing the cyclic stability, Coulombic efficiency, and safety of rechargeable batteries. Although there are many recent efforts for investigating the solid electrolyte interface formed on anodes, much less attention has been paid to examine the cathode–electrolyte interface (CEI) established on cathodes. Understanding of the chemistry, morphology, and structure of CEI layers is still illusive requiring further in‐depth characterization. The cryogenic electron microscopy is used to reveal a 1.1 nm thick CEI layer formed on a flower‐shaped, carbon‐coated Na 3 V 2 (PO 4 ) 3 /C (NVP/C) cathode in ether‐based electrolyte for Na‐ion batteries. The rationally designed NVP/C cathode delivers cyclic stability with a capacity retention of over 88% at 50 mA g −1 after 1600 cycles and an excellent high‐rate capability at up to 3200 mA g −1 . These findings may shed new light on the design of CEI layers to achieve high energy and power densities in rechargeable Na‐ion/metal batteries.
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In the deconvoluted O 1s spectrum, peaks at 532.62 and 534.9 eV represent C-O/C-O-P and C=O/P=O bonds, respectively.
“The presence of oxygenated functional groups was further confirmed by peaks at 532.62 and 534.9 eV in the deconvoluted O 1 s spectrum, which represented by C-O/C-O–P and C=O/P=O bonds, respectively (Fig. 5c)44.”
From High-performance Na3V2(PO4)3/C cathode for efficient low-temperature lithium-ion batteries (2025) · cites this paper as [44]
Section 2.1 (Structure and Morphology; page not specified) says the deconvoluted O 1s spectrum corroborates oxygenated groups, but gives peaks at 531.4 and 532.5 eV, assigned to C=O and P–O–C, respectively. It does not support the claimed 532.62 and 534.9 eV values or their respective bond assignments. (LLM, conf=0.88)
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High-performance Na3V2(PO4)3/C cathode for efficient low-temperature lithium-ion batteries
Mukushev, I., Tyan, Y., Kalimuldina, G., Mukanova, A., Jakupova, Z., Kim, S.-S., Bakenov, Z., & Nurpeissova, A. (2025) · NPG Asia Materials · doi:10.1038/s41427-025-00591-x · Cited by 11 · see citing works
- Authors
- Ihsan-Ul-Haq, M., Cui, J., Mubarak, N., Xu, M., Shen, X., Luo, Z., Huang, B., & Kim, J.-K.
- Affiliations
- Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Clear Water Bay Hong Kong
- Hong Kong University of Science and Technology (HK)
- Corresponding author
- Huang, Baoling
- Kim, Jang-Kyo
- ORCID
- Venue
- Advanced Energy and Sustainability Research
- Publisher
- Wiley
- Published
- 2021-05-31
- Volume
- 2
- Issue
- 10
- ISSN
- 2699-9412 (ISSN-L)
- OpenAlex
- W3172713292
- Cited by
- 22
- References
- 3
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 8 · 2023: 3 · 2022: 3 · 2021: 2
- FWCI
- 1.18
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Advanced Energy and Sustainability Research (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- Funders
- Research Grants Council, University Grants Committee (16212814, 16208718)
- Innovation and Technology Fund (ITS/001/17)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced battery technologies research
- Keywords
- cathode-electrolyte interface, Na3V2(PO4)3, sodium-ion batteries, carbon coating, solid electrolyte interphase, ether-based electrolytes, cryo-electron microscopy, cycling stability, rate capability, layered vanadium phosphate
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