Physicochemical properties of NaxCoO2 as a cathode for solid state sodium battery

Bhide, Amrtha; Hariharan, K.

doi:10.1016/j.ssi.2010.04.022

Cited by 52 publications

(41 citation statements)

References 17 publications

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“…Among those, P2‐Na 0.70 CoO 2 showed the largest energy density (∼260 Wh kg −1 ) in NIB. Recently, P2‐Na x CoO 2 has been reinvestigated,70, 71 and found to reversibly operate between 0.45 ≤ x ≤ 0.90, when Na 0.74 CoO 2 was used as the starting material. The existence of several well defined steps in the voltage profile indicated that various structures were formed during the cycling ( Figure a).…”

Section: Positive Electrode Materialsmentioning

confidence: 99%

Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries

Kim

Seo

et al. 2012

Advanced Energy Materials

3,081

2,051

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Lithium (Li)‐ion batteries (LIB) have governed the current worldwide rechargeable battery market due to their outstanding energy and power capability. In particular, the LIB's role in enabling electric vehicles (EVs) has been highlighted to replace the current oil‐driven vehicles in order to reduce the usage of oil resources and generation of CO2 gases. Unlike Li, sodium is one of the more abundant elements on Earth and exhibits similar chemical properties to Li, indicating that Na chemistry could be applied to a similar battery system. In the 1970s‐80s, both Na‐ion and Li‐ion electrodes were investigated, but the higher energy density of Li‐ion cells made them more applicable to small, portable electronic devices, and research efforts for rechargeable batteries have been mainly concentrated on LIB since then. Recently, research interest in Na‐ion batteries (NIB) has been resurrected, driven by new applications with requirements different from those in portable electronics, and to address the concern on Li abundance. In this article, both negative and positive electrode materials in NIB are briefly reviewed. While the voltage is generally lower and the volume change upon Na removal or insertion is larger for Na‐intercalation electrodes, compared to their Li equivalents, the power capability can vary depending on the crystal structures. It is concluded that cost‐effective NIB can partially replace LIB, but requires further investigation and improvement.

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Section: Positive Electrode Materialsmentioning

confidence: 99%

Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries

Kim

Seo

et al. 2012

Advanced Energy Materials

3,081

2,051

View full text Add to dashboard Cite

show abstract

“…4) and also maintain a similar capacity, which indicates greater sodium mobility (disorder) and phase stability. The reduction in particle size of synthesized compounds for electrodes was found to improve electrochemical performances [30]. Delmas et al [27] investigated the electrochemical characteristics of P2-Na x CoO 2 and O3-Na x CoO 2 as cathodes for Na-ion batteries.…”

Section: Layered Transition Metal Oxidesmentioning

confidence: 99%

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

Wang

Shanmukaraj

et al. 2018

Electrochem. Energ. Rev.

245

122

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Sodium-ion batteries have been emerging as attractive technologies for large-scale electrical energy storage and conversion, owing to the natural abundance and low cost of sodium resources. However, the development of sodium-ion batteries faces tremendous challenges, which is mainly due to the difficulty to identify appropriate cathode materials and anode materials. In this review, the research progresses on cathode and anode materials for sodium-ion batteries are comprehensively reviewed. We focus on the structural considerations for cathode materials and sodium storage mechanisms for anode materials. With the worldwide effort, high-performance sodium-ion batteries will be fully developed for practical applications.

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“…Thus, the development of alternative power sources that can provide electricity at a reasonable price is required . One of the candidates amongst known power sources is the sodium‐ion battery (SIB), which has similar chemistry to current LIBs in terms of properties such as Na + intercalation, solid‐state diffusion, surface film formation, and interfacial charge transfer . More importantly, sodium is very abundant; therefore, the development of SIBs is crucial for the development of large‐scale energy storage systems with high‐energy‐density cathodes.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Surface Layer for the Cathode Material of High‐Energy‐Density Sodium‐Ion Batteries

Yashiro

et al. 2018

Advanced Energy Materials

102

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Cathode materials are usually active in the range of 2–4.3 V, but the decomposition of the electrolytic salt above 4 V versus Na+/Na is common. Arguably, the greatest concern is the formation of HF after the reaction of the salts with water molecules, which are present as an impurity in the electrolyte. This HF ceaselessly attacks the active materials and gradually causes the failure of the electrode via electric isolation of the active materials. In this study, a bioinspired β‐NaCaPO4 nanolayer is reported on a P2‐type layered Na2/3[Ni1/3Mn2/3]O2 cathode material. The coating layers successfully scavenge HF and H2O, and excellent capacity retention is achieved with the β‐NaCaPO4‐coated Na2/3[Ni1/3Mn2/3]O2 electrode. This retention is possible because a less acidic environment is produced in the Na cells during prolonged cycling. The intrinsic stability of the coating layer also assists in delaying the exothermic decomposition reaction of the desodiated electrodes. Formation and reaction mechanisms are suggested for the coating layers responsible for the excellent electrode performance. The suggested technology is promising for use with cathode materials in rechargeable sodium batteries to mitigate the effects of acidic conditions in Na cells.

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Physicochemical properties of NaxCoO2 as a cathode for solid state sodium battery

Cited by 52 publications

References 17 publications

Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries

Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

Bioinspired Surface Layer for the Cathode Material of High‐Energy‐Density Sodium‐Ion Batteries

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