Cu-doped layered P2-type Na0.67Ni0.33-xCuxMn0.67O2 cathode electrode material with enhanced electrochemical performance for sodium-ion batteries

Liu, Yang; Luo, Shaohua; Wang, Yafeng; Yang, Zhan; Wang, Qing; Zhang, Yahui; Liu, Xin; Mu, Wenning; Teng, Fei

doi:10.1016/j.cej.2020.126578

Cited by 64 publications

(40 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the P2-phase is completely preserved and exhibited an excellent ability to withstand cycling even at low surging currents. In fact, other low concentrated substituting candidates such as Li + , Cu 2+ , and co-substitution of Mg 2+ /Cu 2+ on P2-layered structures can completely arrest all feasible phase-transition reactions. − This influences the smooth sloping charge–discharge curve and continuous changing in the equilibrium voltage during galvanostatic titrations with a fast kinetic reaction in P2-Na 0.67 Mg 0.1 Mn 0.9 O 2 , revealing the presence of a solid-solution or quasi-solid-solution reaction behavior …”

Section: Resultsmentioning

confidence: 99%

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Sambandam

Alfaruqi

Park

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

In this study, magnesium-ion-substituted, sodium-deficient, P3-and P2layered manganese oxide cathodes (Na 0.67 Mg 0.1 Mn 0.9 O 2 ) were synthesized through a facile polyol-assisted combustion technique for applications in sodium-ion batteries. The electrochemical reaction pathways, structural integrity, and long cycling ability at low current rates of the P3-and P2-phases of the Na 0.67 Mg 0.1 Mn 0.9 O 2 cathodes were investigated using time-consuming techniques, such as galvanostatic titration and series cyclic voltammetry. The results obtained from these techniques were supported by those obtained from operando X-ray diffraction (XRD) analysis. Particularly, the P2phase provided excellent structural stability owing to its intrinsic crystal structure, thereby exhibiting a reversible capacity retention of 82.6% after 262 cycles at a low rate of 0.1 C; in contrast, the P3-phase exhibited a capacity retention of 38.7% after 241 cycles at a similar current rate. The air stability of these as-prepared powders, which were stored under ambient conditions, was progressively analyzed over a period of 6 months through XRD without conducting any special experiments. The results suggest that in the P3-phase, the formation of NaHCO 3 and hydrated phase impurities, resulting from Na + /H + exchange and hydration reactions, respectively, was likely to occur more quickly, that is, within a few days, compared to that in the P2-phase.

show abstract

Section: Resultsmentioning

confidence: 99%

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Sambandam

Alfaruqi

Park

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Oi is the carrier of oxygen ion transport in 6 3 channels. The 2 mol interstitial oxygen (Oi) migrates in along the 6 3 channels via the sinusoidal pathway, [18][19][20][21][22] which is the conduction mechanism of interstitial oxygen. 23 The conduction model of V 5+ doped is shown in Figure 10B.…”

Section: Sintered Temperature and Characteristics Of Lsvo Electrolymentioning

confidence: 99%

Preparation of V doped lanthanum silicate electrolyte ceramics by combustion method and study on conductance mechanism

Chen

Huang

Chen

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Vanadium doped La 9.33 Si 6−x V x O 26+0.5x (x = 0.5, 1.0, 1.5) (LSVO) electrolyte powder was prepared by combustion method at 600°C for 5-7 min. The powder was sintered at 1500°C for 3 hours to prepare LSVO ceramics. XPS, IR, XRD, and EIS analysis show that V 5+ doping replaces Si 4+ in [SiO 4 ] to form [Si(V)O 4 ] tetrahedron. With the increase in x, the lattice volume increase. When x = 2.0, the LaVO 4 phase was formed, indicating that the limit doping amount of V 5+ replacing Si 4+ is x ≤ 1.5. The conductivity of LSVO increases significantly with the increase in x (x ≤ 1.0), which attributed to the xV 5 + xSi 4 + ⟶xV • Si + 1∕2xOi * ∕ ∕ defect reaction caused by V 5+ doping. The addition of the interstitial oxygen Oi* in 6 3 channels and the increase of lattice volume leads to increased conductivity. When x = 1.0, the highest conductivity is 1.46 × 10 −2 S•cm −1 (800°C). The doping enhancement conductivity mechanism is the Interstitial oxygen defect-Lattice volume composite enhancement mechanism.

show abstract

“…When the Cu effect in the NaTMO 2 system was investigated, it was seen that the Cu ions increased the stability of the structure, providing higher performance when compared to the undoped system. [43][44][45][46]…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Fabrication, electrochemical performance, and in situ infrared thermal imaging of Na _0.67 (Mn _0. ₅ Fe ₀ _.5 ) _1‐x Cu _x O ₂ battery cells

Altın

Korkusuz

2021

Int J Energy Res

View full text Add to dashboard Cite

Na 0.67 (Mn 0.5 Fe 0.5 ) 1-x Cu x O 2 powders (where x = 0, 0.05, 0.1, 0.2, and 0.3) were produced by quenching at 900 C, and the structural features of the powders were studied in detail. It was found that the undoped and Cu-substituted for (x ≤ 0.2) powders had no impurity phases in the structure. Furthermore, the lattice volume calculated by the GSAS-II open-source program decreased with increasing Cu content, and it is suggested that Cu ions have a 3+ valence state in the samples. The cycling voltammetry of the cells is very similar to each other. The constant current charge/discharge cycling measurements were performed for up to 100 cycles, and the best performance was observed for x = 0.2 Cu substitution in Na 0.67 (Mn 0.5 Fe 0.5 ) 1-x Cu x O 2 . The best capacity value was obtained as 182.3 mAh/g at the C/10 rate for x = 0.2 Cu substitution. The cycling measurements at 50 C exhibit worse capacity fade when compared to the measurements performed under ambient conditions. The in situ infrared thermal imaging measurements for the cell that had the highest performance in this study were performed for a constant voltage of 4.3 V for charging and 1.5 V for discharging of the cell. The ohmic heat was calculated from chronoamperometry measurements, and the heat generation was fitted with the quadratic term in the system.

show abstract

Cu-doped layered P2-type Na0.67Ni0.33-xCuxMn0.67O2 cathode electrode material with enhanced electrochemical performance for sodium-ion batteries

Cited by 64 publications

References 41 publications

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Preparation of V doped lanthanum silicate electrolyte ceramics by combustion method and study on conductance mechanism

Fabrication, electrochemical performance, and in situ infrared thermal imaging of Na _0.67 (Mn _0. ₅ Fe ₀ _.5 ) _1‐x Cu _x O ₂ battery cells

Contact Info

Product

Resources

About

Cu-doped layered P2-type Na0.67Ni0.33-xCuxMn0.67O2 cathode electrode material with enhanced electrochemical performance for sodium-ion batteries

Cited by 64 publications

References 41 publications

Validating the Structural (In)stability of P3- and P2-Na0.67Mg0.1Mn0.9O2-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Validating the Structural (In)stability of P3- and P2-Na0.67Mg0.1Mn0.9O2-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Preparation of V doped lanthanum silicate electrolyte ceramics by combustion method and study on conductance mechanism

Fabrication, electrochemical performance, and in situ infrared thermal imaging of Na 0.67 (Mn 0. 5 Fe 0 .5 ) 1‐x Cu x O 2 battery cells

Contact Info

Product

Resources

About

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Validating the Structural (In)stability of P3- and P2-Na_0.67Mg_0.1Mn_0.9O₂-Layered Cathodes for Sodium-Ion Batteries: A Time-Decisive Approach

Fabrication, electrochemical performance, and in situ infrared thermal imaging of Na _0.67 (Mn _0. ₅ Fe ₀ _.5 ) _1‐x Cu _x O ₂ battery cells