Effect of Mg+2 and Bi+3 co-doping on structural and electrochemical properties of lithium titanium oxide for use as anode material in lithium-ion battery

Firdous, Naila; Arshad, Nasima; Muzaffar, Nazan; Norby, Poul

doi:10.1016/j.jelechem.2020.114515

Cited by 10 publications

(2 citation statements)

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“…Warburg impedance corresponds to the Li + diffusion in the electrodes. Figure (b) represents the relation between Z re and w –1/2 which was further used to find the Li-ion diffusion coefficient using the following relationships (eqs and ) where R is the gas constant (8.314 J mol –1 K –1 ), σ signifies the Warburg factor, F is Faraday’s constant (96485 C mol –1 ), A is the area of the electrode (1.77 cm 2 ), C Li is the Li-ion concentration, T is the absolute temperature (298 K), and n denotes the number of electrons transported in the redox reaction.…”

Section: Resultsmentioning

confidence: 99%

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries

2020

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This study designates the outcomes of niobium doping and carbon coating on the structural and electrochemical performance of Li2ZnTi3O8 as an anode electrode for use in Li-ion batteries. Nb-doped, carbon-coated Li2ZnTi2.95Nb0.05O8/C (LZTO-2) and pristine Li2ZnTi3O8 (LZTO-1) anode materials were synthesized using facile sonication-assisted solid-state synthesis using sucrose as the carbon source. The synthesized materials are characterized using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Electrochemical investigations are carried out using galvanostatic cycling, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Structural analysis shows that the synthesized materials crystallize in the P4332 space group. It is observed through these studies that Nb doping (5%) and carbon (10%) coating have improved significantly the electrochemical performance of the (LZTO-2) as compared to (LZTO-1). LZTO-2 exhibits excellent cyclic performance and specific capacity (mA h g–1) at all C-rates. The excellent specific capacity of LZTO-2 at higher C-rates (5C, 10C, 20C, and 30C), i.e., 156, 135, 113, and 77 mA h g–1, respectively, as compared to LZTO-1, i.e., 127, 89, 48, and 26 mA h g–1, respectively, can be attributed to low charge transfer resistance resulting from having the proper amount of dopant and carbon content. Higher specific capacities, low charge transfer resistance, and higher values of Li-ion diffusion coefficient indicate that LZTO-2 is a magnificent anode electrode for commercial Li-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries

2020

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“…In fact, SnFe 2 O 4 is a spinel phase proposed for use in LIBs that can provide interesting capacity values [32]. Mg ions, such as Sn, should have complete solubility in the spinel structure and can provide an increase in structural stability, particularly useful for long-term cycling, as reported for other kinds of anode materials [33,34]. In addition, due to the lower oxidation state of Mg (2+), with respect to Ge (4+), the formation of oxygen vacancies cannot be excluded, possibly improving the Na + diffusion.…”

Section: Xrd and Rietveld Refinementmentioning

confidence: 98%

Pure and (Sn or Mg) Doped GeFe2O4 as Anodes for Sodium-Ion Batteries

Ambrosetti,

Quinzeni,

Girella

et al. 2024

Batteries

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GeFe2O4 (GFO) is a germanium mineral whose spinel crystal structure determines its interesting functional properties. Recently, it was proposed for application as an anode for Sodium and Lithium-Ion Batteries (SIBs and LIBs) thanks to its combined conversion and alloying electrochemical mechanism. However, its entire potential is limited by the poor electronic conductivity and volumetric expansion during cycling. In the present paper, pure and Sn or Mg doped GFO samples obtained from mechano-chemical solid-state synthesis and properly carbon coated were structurally and electrochemically characterized and proposed, for the first time, as anodes for SIBs. The spinel cubic structure of pure GFO is maintained in doped samples. The expected redox processes, involving Fe and Ge ions, are evidenced in the electrochemical tests. The Sn doping demonstrated a beneficial effect on the long-term cycling (providing 150 mAh/g at 0.2 C after 120 cycles) and on the capacity values (346 mAh/g at 0.2 C with respect to 300 mAh/g of the pure one), while the Mg substitution was less effective.

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Tailoring Li4Ti5O12 Performance in Li-Ion Batteries with a Focus on Rate Capability: Recent Advances on Ion Doping, Morphology Control, and Composite Formation

Edalat Shirvan,

Hassanzadeh,

Omidvar

et al. 2024

J. of Materi Eng and Perform

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Effect of Mg+2 and Bi+3 co-doping on structural and electrochemical properties of lithium titanium oxide for use as anode material in lithium-ion battery

Cited by 10 publications

References 63 publications

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries

Pure and (Sn or Mg) Doped GeFe2O4 as Anodes for Sodium-Ion Batteries

Tailoring Li4Ti5O12 Performance in Li-Ion Batteries with a Focus on Rate Capability: Recent Advances on Ion Doping, Morphology Control, and Composite Formation

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Effect of Mg+2 and Bi+3 co-doping on structural and electrochemical properties of lithium titanium oxide for use as anode material in lithium-ion battery

Cited by 10 publications

References 63 publications

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li2ZnTi3O8 Anode Candidate for Lithium Ion Batteries

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li2ZnTi3O8 Anode Candidate for Lithium Ion Batteries

Pure and (Sn or Mg) Doped GeFe2O4 as Anodes for Sodium-Ion Batteries

Tailoring Li4Ti5O12 Performance in Li-Ion Batteries with a Focus on Rate Capability: Recent Advances on Ion Doping, Morphology Control, and Composite Formation

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Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries

Synergic Effect of Niobium Doping and Carbon Coating on the Performance of a Li₂ZnTi₃O₈ Anode Candidate for Lithium Ion Batteries