Layered P2-type Na0.5Ni0.25Mn0.75O2 as a high performance cathode material for sodium-ion batteries

Manikandan, P.; Ramasubramonian, D.; Shaijumon, Manikoth M.

doi:10.1016/j.electacta.2016.04.138

Cited by 76 publications

(48 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained lattice parameters of SPP are a=2.8748 Å and c=11.2996 Å, the calculated pattern fits well with the observed pattern, the R‐factors of R p (profile), R wp (weighted profile) and χ 2 (χ=R wp /R exp , R exp ‐expected R factor) are 10.8 %, 14.3 % and 9.48, respectively. These results further demonstrate that the SPP is the layered P2‐type structure, in good agreement with the previous reports ,,,. The schematic illustration of P2‐type is shown in Figure (c), two types of sodium ions are both located between the MO 6 (M=transition metal ions) octahedral ,.…”

Section: Resultssupporting

confidence: 92%

“…To obtain the cathode materials with satisfactory electrochemical performance, the most effective way is to improve the synthesis method. There are many ways to synthesize P2‐type cathodes, such as sol‐gel method, reverse microemulsion method, solid‐state method and co‐precipitation method . However, the synthesis procedures of the sol‐gel method are complicated, while the solid‐state method usually results in inhomogeneous products.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

et al. 2018

View full text Add to dashboard Cite

For the sake of achieving the practical application of sodium‐ion batteries, extensive efforts have been made to improve the electrochemical performance of cathode materials. A simple co‐precipitation route is successfully developed to synthesize nanowires of transition metal hydroxides through a sodium peroxide pouring process instead of the traditional sodium hydroxide dropping approach. After a subsequent annealing process, a well‐crystallized P2‐Na0.56[Ni0.1Co0.1Mn0.8]O2 layered cathode material is obtained. Owing to such an exquisite architecture, this material possesses an excellent electrochemical performance, exhibits a reversible capacity of 188 mAh g−1 at 48 mA g−1 in the voltage range of 1.5‐4.1 V with nearly 99.7 % coulombic efficiency and retains approximately 80.2 % of the initial capacity after 50 cycles. Moreover, even at an extremely high current density of 2400 mA g−1, it delivers a capacity of 134 mAh g−1 and remains at 76 mAh g−1 after 1500 cycles, which surpasses most reported layered transition metal oxide cathode materials. This strategy of providing a strong oxidizing environment during the co‐precipitation process is especially crucial for obtaining materials with excellent electrochemical performances for future energy storage application.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The powder XRD was carried out to determine the crystal structures of the as‐prepared samples (Figure ). The XRD patterns of the as‐prepared samples show both the characteristic peaks of P2 layered structure (the space group P63/mmc , JCPDF 27–0751) and the characteristic peaks of P3 layered structure (the space group R‐3m , JCPDF 54‐0839), indicating the successful synthesis of P2/P3 bi‐phase composite. When the added nickel content increased to 25 %, several obvious peaks attributed to P3 phase appeared at 36°, 37°, 45°, 52° and 57°.…”

Section: Resultsmentioning

confidence: 96%

Simultaneous Component Ratio and Particle Size Optimization for High‐Performance and High Tap Density P2/P3 Composite Cathode of Sodium‐Ion Batteries

et al. 2019

View full text Add to dashboard Cite

The composite structure materials in sodium-ion batteries (SIBs) have received increasing attentions due to the synergistic effect. P2/P3 composite cathode with the advantages of high reversible capacity and superior reaction kinetics was regarded as one of the promising cathodes for SIBs. Crystal phase component ratio and particle morphology of hybrid structures are closely related with the electrochemical performance, especially the energy density. Herein, P2/P3 hybrid structure materials Na 0.6 Mn 1-x Ni x O 2 were synthesized by co-precipitation method. Furthermore, the component ratio and particle size are tuned and realized via simple Ni 2 + content optimization. The targeted sample Na 0.6 Mn 0.75 Ni 0.25 O 2 shows high tap density over 1.2 g cm À 3 and excellent electrical properties with an initial capacity of 101.36 mA h g À 1 at 0.2 C, corresponding to a high volumetric energy density of 512 Wh L À 1 based on the cathode active material. Moreover, the long-term cycling capacity retention can reach 68 % at 1 C after 500 cycles. The present study develops a promising cathode of SIBs that maybe applied in low-speed electric vehicles. And the simultaneous optimization design represents a potential route for the regulation of composite structures to obtain high performance SIBs.

show abstract

“…The structure of the cathode material changes significantly during charge, and an excessive cut‐off voltage can break the crystal structure and cause the attenuation of the capacity. When the charge voltage is higher than 4.2 V, the P2 phase is converted into the O2 phase . As shown in Figure C, the cathode material in the discharge state has a hexagonal phase structure with a space group of P63/mmc.…”

Section: Resultsmentioning

confidence: 99%

Reaction Mechanisms of Sodium‐Ion Batteries under Various Charge and Discharge Conditions in a Three‐Electrode Setup

Song

Zhou

et al. 2018

ChemElectroChem

View full text Add to dashboard Cite

Charge‐discharge reaction mechanisms of sodium‐ion batteries under various condition are studied by using a three‐electrode setup of a pouch‐type sodium‐ion battery. The sodium‐ion battery is constructed by using cost‐effective ternary layered Na0.76Ni0.3Fe0.4Mn0.3O2 and commercial hard carbon as the cathode and anode materials, respectively, and 1.0 M NaPF6 in mixed carbonate solvent as the electrolyte. The electrochemical impedance spectroscopy (EIS) results and transmission electron microscopy (TEM) images show that an apparent solid‐electrolyte interphase (SEI) film is formed on anode material surface during the formation (pre‐charging) process, and the potentials for the SEI film formation of the solvents (ethylene carbonate and ethylene carbonate) and the additive (fluorinated ethylene carbonate) in the electrolyte are 2.04 and 2.79 V, respectively. The X‐ray diffraction (XRD) results demonstrate that, during charge, the crystal structure of cathode material changes significantly with the deintercalation of Na+. When the battery is charged to 5.0 V, the diffraction peak corresponding to the (002) plane disappears, as Na+ is further deintercalated, and the structure changes from the hexagonal phase to the monoclinic phase, causing the rapid degradation of the cycle performance. When the battery is overdischarged to 0 V, the EIS results and TEM images show that the SEI film is destroyed completely, and the cycle life performance is significantly deteriorated.

show abstract

Layered P2-type Na0.5Ni0.25Mn0.75O2 as a high performance cathode material for sodium-ion batteries

Cited by 76 publications

References 54 publications

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

Simultaneous Component Ratio and Particle Size Optimization for High‐Performance and High Tap Density P2/P3 Composite Cathode of Sodium‐Ion Batteries

Reaction Mechanisms of Sodium‐Ion Batteries under Various Charge and Discharge Conditions in a Three‐Electrode Setup

Contact Info

Product

Resources

About

Layered P2-type Na0.5Ni0.25Mn0.75O2 as a high performance cathode material for sodium-ion batteries

Cited by 76 publications

References 54 publications

Obtaining P2‐Na0.56[Ni0.1Co0.1Mn0.8]O2 Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

Obtaining P2‐Na0.56[Ni0.1Co0.1Mn0.8]O2 Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

Simultaneous Component Ratio and Particle Size Optimization for High‐Performance and High Tap Density P2/P3 Composite Cathode of Sodium‐Ion Batteries

Reaction Mechanisms of Sodium‐Ion Batteries under Various Charge and Discharge Conditions in a Three‐Electrode Setup

Contact Info

Product

Resources

About

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method

Obtaining P2‐Na_0.56[Ni_0.1Co_0.1Mn_0.8]O₂ Cathode Materials for Sodium‐Ion Batteries by using a Co‐precipitation Method