P2-type Na0.67Fe0.3Mn0.3Co0.4O2 cathodes for high-performance sodium-ion batteries

Zhou, Dengmei; Huang, Wanxia; Zhao, Fenglin

doi:10.1016/j.ssi.2018.04.019

Cited by 31 publications

(13 citation statements)

References 44 publications

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“…Mn 3+ BE in the uncycled electrode lies at 642.47 (2p 3/2 ) and 653.87 (2p 1/2 ) eV, whereas Mn 4+ BE is positioned at 643.63 (2p 3/2 ) and 655.13 (2p 1/2 ) eV. These values, as well as the BE difference, correspond well with the previous studies [49–50] . The binding energies of the Mn2p peak position are divided into two peaks due to spin‐orbit coupling.…”

Section: Resultssupporting

confidence: 89%

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

et al. 2020

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Herein, we report on electrochemical and structural properties of low‐cost Na0.67Mn(1‐x)FexO2 (NMFx) cathode materials synthesized through substitution of Mn with small amounts of Fe. The materials were fabricated using a simple solid‐state synthesis method. Electrochemical performance of the cathodes was significantly improved when initial electrochemical activation had been performed. Activated Na0.67Mn0.9Fe0.1O2 material displayed a high capacity of 132 mAh/g after 100 cycles and delivered an exceptionally high rate capability of 116 mAh/g at 500 mA/g. Energy‐dispersive X‐ray spectroscopy (EDX), cyclic voltammetry (CV) and ex situ X‐ray photoelectron‐spectroscopy (XPS) analyses suggested that Fe had played a structural as well as an electrochemical role in cathode performance. Ex situ and in situ X‐ray diffraction (XRD) studies were used to analyze the associated structural variations during the capacity evolution.

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Section: Resultssupporting

confidence: 89%

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

et al. 2020

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“… 41,42 As shown in Figure 7C, the Mn 2p spectra display bands at the B.E values of 642.2 and 653.7 eV for Mn 2p3/2 and 2p1/2, respectively. They fit very well with the Mn 4+ oxidation state 43,44 . Moreover, the Ni 2p spectra feature bands located at 854.5, 872.2 eV, which are belonging to Ni 2p3/2, Ni 2p1/2, respectively, and their corresponding satellite peaks are also observed in Figure 7D 45 .…”

Section: Resultssupporting

confidence: 64%

“…They fit very well with the Mn 4+ oxidation state. 43,44 Moreover, the Ni 2p spectra feature bands located at 854.5, 872.2 eV, which are belonging to Ni 2p3/2, Ni 2p1/2, respectively, and their corresponding satellite peaks are also observed in Figure 7D. 45 The O 1s spectra were shown in Figure 7E.…”

Section: X-ray Photoelectron Spectroscopy Analysismentioning

confidence: 92%

Optimization of prismatic type layered electrode materials for high performance sodium battery

et al. 2021

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The prismatic and octahedral type layered cathode materials can provide enhanced performance in sodium-ion batteries, due to low potential barrier during the intercalation. Among them, the prismatic layered Na-Ni-Mn-O system is the most preferable electrode with a high theoretical capacity of 173 mAhg −1 . The P2-type phase could be attained only by satisfying the conditions of alkali, and transition metal ratio 0.5 ≤ x ≤ 1. The P2-type layered structure in the Na-Ni-Mn-O system has been studied via optimizing the alkali and transition metals in two phases. Here, the vacuum assisted solid-state preparation method was carried out to avoid NiMnO 4 impurities. From diffraction analysis and refinement data, the structural changes were analyzed, then the optimal ratio for perfect P2-structure has been confirmed. The perfect P2-structure was obtained only for the samples Na 0.66 Ni 0.3 Mn 0.7 O 2 , Na 0.66 Ni 0.33 Mn 0.67 O 2 . The prepared materials showed the initial discharge capacity of 194 mAhg −1 at 0.1C. Highlights• Prismatic type layered Na-Ni-Mn-O electrodes synthesized via simple solidstate reaction.• The prepared electrode delivered initial capacity of 194 mAh g −1 at 0.1 C.• Mn richness maintains the low potential barrier for Na-ion during cycling.• This enhances the electrochemical performances of the material.• Increment of Nickel concentration enhance the unite cell volume.

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“…Figure3Cshows the XPS test results of Co 2p, which demonstrate the existence of Co 3+ (779.4 and 794.6 eV), Co 2+ (781.2 and 796.0 eV), and two satellite peaks 35. As can be seen from Figure3D, the two peaks with binding energies of 642.3 and 653.9 eV are exactly consistent with the binding energies of Mn 2p 3/2 and 2p 1/2 peaks, corresponding to Mn 4+ [36][37][38]. As can be seen from Figure3E, the two peaks with binding energies of 529.6 and 531.0 eV are exactly consistent with the binding energies of O 1s, ascribing to metal oxygen bonds and oxygen in defects 39.…”

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confidence: 76%

Synthesis and research of (Ni _0. ₁ Co ₀ _. ₃ Mn ₀ _.6 ) ₃ O ₄ as lithium‐ion battery conversion‐type anode using spen

Guo

Zhu

et al. 2021

Int J Energy Res

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LiNi 1-x-y Co x Mn y O 2 lithium-ion battery, as the most installed battery of new energy vehicles, is facing the problem of large-scale scrap. In this paper, (Ni 0.1 Co 0.3 Mn 0.6 ) 3 O 4 anode material with a microsphere structure was successfully synthesized by carbonate coprecipitation method, which was obtained by recycling spent LiNi 0.6 Co 0.2 Mn 0.2 O 2 lithium-ion batteries through hydrometallurgy technology. This method eliminates the cumbersome separation steps, reduces the process cost, and realizes efficient recovery of valuable metals. The (Ni 0.1 Co 0.3 Mn 0.6 ) 3 O 4 anode material was characterized by inductively coupled plasma, X-ray photoelectron spectroscopy, X-ray diffraction analysis, scanning electron microscopy, and electrochemical measurements. The results show that (Ni 0.1 Co 0.3 Mn 0.6 ) 3 O 4 anode material has a microsphere structure with high crystallinity and exhibits a high discharge capacity (1575 mAhÁg −1 at 100 mAÁg −1 ) and a good cycling performance (659 mAhÁg −1 at 100 mAÁg −1 after 50 cycles). This work provides a new idea for the recycling of spent LiNi 1-x-y Co x Mn y O 2 batteries.

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P2-type Na0.67Fe0.3Mn0.3Co0.4O2 cathodes for high-performance sodium-ion batteries

Cited by 31 publications

References 44 publications

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Optimization of prismatic type layered electrode materials for high performance sodium battery

Synthesis and research of (Ni _0. ₁ Co ₀ _. ₃ Mn ₀ _.6 ) ₃ O ₄ as lithium‐ion battery conversion‐type anode using spen

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P2-type Na0.67Fe0.3Mn0.3Co0.4O2 cathodes for high-performance sodium-ion batteries

Cited by 31 publications

References 44 publications

Na0.67Mn(1‐x)FexO2 Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Na0.67Mn(1‐x)FexO2 Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Optimization of prismatic type layered electrode materials for high performance sodium battery

Synthesis and research of (Ni 0. 1 Co 0 . 3 Mn 0 .6 ) 3 O 4 as lithium‐ion battery conversion‐type anode using spen

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Product

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About

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Na_0.67Mn_(1‐x)Fe_xO₂ Compounds as High‐Capacity Cathode Materials for Rechargeable Sodium‐Ion Batteries

Synthesis and research of (Ni _0. ₁ Co ₀ _. ₃ Mn ₀ _.6 ) ₃ O ₄ as lithium‐ion battery conversion‐type anode using spen