Ti 2 Nb 10 O 29–x mesoporous microspheres as promising anode materials for high-performance lithium-ion batteries

Deng, Shengjue; Luo, Zhibin; Liu, Yating; Lou, Xiaoming; Lin, Chunfu; Yang, Changchun; Zhao, Hua; Zheng, Peng; Sun, Zejun; Li, Jianbao; Wang, Ning; Wu, Hui

doi:10.1016/j.jpowsour.2017.07.039

Cited by 82 publications

(63 citation statements)

References 25 publications

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“…As previously reported, electronic conductivity for Ti 2 Nb 10 O 29− x with oxygen vacancy is much higher than stoichiometric Ti 2 Nb 10 O 29 , due to the presence of Ti 3+ and/or Nb 4+ in the crystal lattice . In order to evaluate the influence of oxygen vacancy on electronic conductivity for TiNb 2 O 7 , potentiostatic polarization measurement at 30°C was carried out for TNO‐A and TNO‐V.…”

Section: Resultssupporting

confidence: 90%

“…In addition, electrochemical properties of Ti 2 Nb 10 O 29 can be improved greatly by introducing oxygen vacancy in the crystal structure . Oxygen vacancy can be easily introduced in Ti 2 Nb 10 O 29 crystal by annealing the precursor in vacuum, Ar and N 2 atmospheres and greatly enhance the electronic conductivity . This method is quite simple, and could be applicable for improving electrochemical performance of other mixed Ti‐Nb oxide with different Ti and Nb compositions such as TiNb 2 O 7 and TiNb 24 O 62 .…”

Section: Introductionmentioning

confidence: 54%

“…As shown in Figure A, two peaks of Ti 2P 1/2 and Ti 2P 3/2 spectra in TNO‐A are observed at binding energy around 465.3 and 459.7 eV, suggesting that the existence and occupying of Ti 4+ in an octahedral environment . These peaks are confirmed in TNO‐V, but Ti 2P 3/2 spectrum in TNO‐V slightly shifts toward lower binding energy compared to TNO‐A, indicating that small amounts of Ti 4+ in TNO‐V are reduced to Ti 3+ caused by introduction of oxygen vacancy . In Figure B for Nb 3d spectra, two peaks located at 208.1 eV for Nb 3d 5/2 and 210.9 eV for Nb 3d 3/2 are confirmed in TNO‐A indicating the presence of Nb 5+ .…”

Section: Resultsmentioning

confidence: 77%

“…Moreover, these oxides are nontoxic and more importantly, their redox potential should avoid possible lithium plating. To date, the electrochemical properties for various niobium‐based oxides have been reported . Among them, mixed titanium‐niobium oxides TiNb 2 O 7 , Ti 2 Nb 10 O 29 , and TiNb 24 O 62 have high theoretical capacity around 390‐400 mAh g −1 due to Ti 4+/3+ , Nb 5+/4+ , and Nb 4+/3+ redox couples .…”

Section: Introductionmentioning

confidence: 99%

“…Cr 3+ and Nb 5+ co‐doped Ti 2 Nb 10 O 29 shows mush superior electrochemical performance to non‐doped one . In addition, electrochemical properties of Ti 2 Nb 10 O 29 can be improved greatly by introducing oxygen vacancy in the crystal structure . Oxygen vacancy can be easily introduced in Ti 2 Nb 10 O 29 crystal by annealing the precursor in vacuum, Ar and N 2 atmospheres and greatly enhance the electronic conductivity .…”

Section: Introductionmentioning

confidence: 99%

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Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Inada

Mori

Kumasaka

et al. 2018

Int J Applied Ceramic Tech

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Electrochemical properties of mixed titanium‐niobium oxide TiNb2O7 (TNO) synthesized via vacuum annealing as high potential anode material for lithium‐ion batteries were investigated. Crystal structure, size, and morphology are nearly independent of the annealing atmosphere for starting materials but the color of vacuum‐annealed TNO (TNO‐V) is dark blue while white for the air‐annealed one (TNO‐A). X‐ray photoelectron spectroscopy analysis also indicated that Ti4+ and Nb5+ in TNO are partially reduced into Ti3+ and Nb4+ due to the introduction of oxygen vacancy. Electronic conductivity for TNO‐V was around 10−3 S cm−1 at room temperature and much higher than that for TNO‐A (=10−11 S cm−1). In electrochemical testing, both TNO‐A and TNO‐V electrodes showed reversible capacity of 260‐270 mAh g−1 at low current density of 0.5 mA cm−2, while at higher current density of 5.0 mA cm−2, TNO‐V electrode retained higher reversible capacity of 140 mAh g−1 than that for TNO‐A electrode (=80 mAh g−1). The enhancement of intrinsic electronic conductivity greatly contributes to improve the rate performance of TNO.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Inada

Mori

Kumasaka

et al. 2018

Int J Applied Ceramic Tech

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Synergy of Ion Doping and Spiral Array Architecture on Ti₂Nb₁₀O₂₉: A New Way to Achieve High‐Power Electrodes

Deng

Zhu

Liu

et al. 2020

Adv Funct Materials

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Ameliorating electronic/ionic transport and structural stability of electrode materials is important to the development of power‐intensive lithium ion batteries. Despite its great potential as a high‐power anode, titanium niobium oxide (Ti2Nb10O29, TNO) still underperforms due to its unsatisfactory electronic/ionic conductivity. In this work, a powerful synergistic strategy by combining ion doping and spiral array architecture to boost high‐rate performance of TNO is reported. Cr3+ doped TNO nanoparticles (Cr‐TNO) of 5–10 nm intimately grow on a conductive vertical graphene@TiC‐C (VGTC) skeleton, forming novel Cr‐TNO@VGTC spiral arrays. The unique spiral growth of TNO is achieved due to the confinement effect of VGTC skeleton. Meanwhile, a more open TNO crystal structure with faster ion transfer paths and enhanced structural stability is realized by Cr3+ doping, demonstrated via density functional theory calculation and in situ synchrotron X‐ray diffraction technique. Benefiting from the superior conductive network, enhanced intrinsic electronic/ionic conductivity of Cr‐TNO and reinforced structural stability, the Cr‐TNO@VTC arrays show prominent high‐power performance with a large capacity of 220 mAh g−1 at 40 C (power density of ≈11 kW kg−1) and superior durability (91% retention after 500 cycles). This work provides a new path for the construction of widespread high‐power electrodes for fast energy storage.

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Fast Charging Anode Materials for Lithium‐Ion Batteries: Current Status and Perspectives

Wang

Zhang

et al. 2022

Adv Funct Materials

242

155

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With the enormous development of the electric vehicle market, fast charging battery technology is highly required. However, the slow kinetics and lithium plating under fast charging condition of traditional graphite anode hinder the fast charging capability of lithium‐ion batteries. To develop anode materials with rapid Li‐ions diffusion capability and fast reaction kinetics has received widely attentions. This review summarizes the current status in the exploration of fast charging anode materials, mainly including the critical challenge of achieving fast charging capability, the inherent structures and lithium storage mechanisms of various anode materials, as well as the recent progress to improve the rate performance involving morphology regulation, structure design, surface/interface modification, as well as forming multiphase systems. Finally, the challenges and future directions of developing fast charging Li‐ion batteries are highlighted.

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Ti 2 Nb 10 O 29–x mesoporous microspheres as promising anode materials for high-performance lithium-ion batteries

Cited by 82 publications

References 25 publications

Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Synergy of Ion Doping and Spiral Array Architecture on Ti₂Nb₁₀O₂₉: A New Way to Achieve High‐Power Electrodes

Fast Charging Anode Materials for Lithium‐Ion Batteries: Current Status and Perspectives

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Ti 2 Nb 10 O 29–x mesoporous microspheres as promising anode materials for high-performance lithium-ion batteries

Cited by 82 publications

References 25 publications

Characterization of vacuum‐annealed TiNb2O7 as high potential anode material for lithium‐ion battery

Characterization of vacuum‐annealed TiNb2O7 as high potential anode material for lithium‐ion battery

Synergy of Ion Doping and Spiral Array Architecture on Ti2Nb10O29: A New Way to Achieve High‐Power Electrodes

Fast Charging Anode Materials for Lithium‐Ion Batteries: Current Status and Perspectives

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Product

Resources

About

Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Characterization of vacuum‐annealed TiNb₂O₇ as high potential anode material for lithium‐ion battery

Synergy of Ion Doping and Spiral Array Architecture on Ti₂Nb₁₀O₂₉: A New Way to Achieve High‐Power Electrodes