Combined conductivity and electrochemical impedance spectroscopy study of Na2FeP2O7 cathode material for sodium ion batteries

Kavaliukė, V.; Nesterova, Inara; Kežionis, A.; Balčiūnas, S.; Bajārs, Gunārs; Салкус, Т.; Kučinskis, Gints

doi:10.1016/j.ssi.2022.116024

Cited by 5 publications

(1 citation statement)

References 66 publications

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“…The measured EIS spectrum is divided into high-frequency, medium-high-frequency, medium-frequency, and low-frequency regions. The electronic conductivity of the active material affects the medium-high frequency region, corresponding to the surface-film resistance [82]. The main step of the charge-discharge process is the extraction and insertion of lithium ions in the positive-and negative-electrode materials.…”

Section: Related Policies and Technical Standards For Echelon Utiliza...mentioning

confidence: 99%

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

2023

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With the growing requirements of retired electric vehicles (EVs), the recycling of EV batteries is being paid more and more attention to regarding its disassembly and echelon utilization to reach highly efficient resource utilization and environmental protection. In order to make full use of the retired EV batteries, we here discuss various possible application methods of echelon utilization, including hierarchical analysis methods based on various battery evaluation index. In addition, retired EV battery disassembly is also reviewed through the entire EV battery recycling based on human–robot collaboration methods. In order to improve the efficiency and reduce the cost of EV recycling, it is necessary to find a suitable recycling mode and disassembly process. This paper discusses the future possibility of echelon utilization and disassembly in retired EV battery recycling from disassembly optimization and human–robot collaboration, facing uncertain disassembly and echelon utilization.

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Section: Related Policies and Technical Standards For Echelon Utiliza...mentioning

confidence: 99%

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

2023

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Dual‐Carbon‐Coated Na₂FeP₂O₇ Cathode Materials for Na‐Ion Batteries with Superior High‐Rate and Cycling Stability

Zhou,

Yu,

Zhou

et al. 2024

Adv Energy and Sustain Res

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The iron‐based pyrophosphate Na2FeP2O7 (NFP) is considered as one of the most promising cathodes for sodium‐ion batteries (SIBs) due to its low‐cost and superior structure stability, yet it usually suffers from poor intrinsic electronic conductivity. Herein, a two‐step carbon‐coating technique has been developed to synthesize high‐performance NFP@C cathode materials by controlling the NFP particle size and the coating layer uniformity. The first step of in‐situ carbon coating greatly restrains the excessive growth of NFP crystals with a shortened Na‐ion diffusion path. Meantime, the extra secondary carbon‐coating is adopted to repair some exposed areas, guaranteeing the full coverage of NFP particles for rapid electronic transfer. As a consequence, the as‐obtained NFP@C cathode delivers a high discharge capacity of 95.2 mAh g−1 at 0.1 C (theoretical value: 97 mAh g−1) and with high‐rate capability (75.2 mAh g−1 at 5 C) within 2.0–4.0 V. A capacity retention of 95.3% can be achieved even after 500 cycles at 5 C in coin‐type cells. Such superior electrochemical performances are expected to quickly promote the applications of NFP in SIBs.

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From electrochromic phenomena to energy harvesting and storage—an overview of solid state ionics research at the Institute of Solid State Physics, University of Latvia

Kleperis

Bajārs

Grīnberga

et al. 2023

J Solid State Electrochem

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Combined conductivity and electrochemical impedance spectroscopy study of Na2FeP2O7 cathode material for sodium ion batteries

Cited by 5 publications

References 66 publications

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

Dual‐Carbon‐Coated Na₂FeP₂O₇ Cathode Materials for Na‐Ion Batteries with Superior High‐Rate and Cycling Stability

From electrochromic phenomena to energy harvesting and storage—an overview of solid state ionics research at the Institute of Solid State Physics, University of Latvia

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Combined conductivity and electrochemical impedance spectroscopy study of Na2FeP2O7 cathode material for sodium ion batteries

Cited by 5 publications

References 66 publications

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

A Review on Dynamic Recycling of Electric Vehicle Battery: Disassembly and Echelon Utilization

Dual‐Carbon‐Coated Na2FeP2O7 Cathode Materials for Na‐Ion Batteries with Superior High‐Rate and Cycling Stability

From electrochromic phenomena to energy harvesting and storage—an overview of solid state ionics research at the Institute of Solid State Physics, University of Latvia

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Product

Resources

About

Dual‐Carbon‐Coated Na₂FeP₂O₇ Cathode Materials for Na‐Ion Batteries with Superior High‐Rate and Cycling Stability