Fabrication of high specific surface area TiO2 nanopowders by anodization of porous titanium

Lin, Yang‐Wei; Qian, Qun; Chen, Zhenhui; Tuấn, Phan Đình; Feng, Daolun

doi:10.1016/j.elecom.2022.107234

Cited by 13 publications

(12 citation statements)

References 42 publications

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“…After charging and discharging, the specific surface area of the material increases significantly, especially the one in redox electrolyte, reaching 99.08 m 2 /g. The one in Na 4 Fe(CN) 6 is higher, which can be analyzed for the expansion of the characterization structure brought by the additional good wetting effect of the liquid/solid interface . At the same time, the TEM of the initial material was also tested, and the morphology of the PBN material under TEM can be seen (Figure j).…”

Section: Resultsmentioning

confidence: 97%

“…The one in Na 4 Fe(CN) 6 is higher, which can be analyzed for the expansion of the characterization structure brought by the additional good wetting effect of the liquid/solid interface. 43 At the same time, the TEM of the initial material was also tested, and the morphology of the PBN material under TEM can be seen (Figure 5j). Physically, the above data is good proof for the correctness of the electrolyte selection.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Zhou

Zheng

Zartashia

et al. 2022

ACS Appl. Mater. Interfaces

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Sodium-ion batteries (SIBs) are regarded as one of the most promising candidates for next-generation energy storage devices and have been gradually grasping market share for their low cost and similar reaction mechanism and production process as compared to lithium-ion batteries. However, the low energy density of SIBs restricts their practical applications. For example, regular full cells of a Prussian blue cathode and NASICON anode have only a low discharge capacity (about 77 mA h/g at 1 C). Taking into account the compatibility of the electrolyte and electrode materials, a novel strategy for a viable aqueous dual-electrolyte sodium-ion battery (ADESIB) has been proposed using Na 2 SO 4 solution as the anolyte and redox-active sodium hexacyanoferrate Na 4 Fe(CN) 6 solution as the catholyte to accommodate a NASICON NaTi 2 (PO 4 ) 3 anode and Prussian blue Na 2 NiFe(CN) 6 cathode. The capacity of Na + ion deinsertion/ insertion electrodes combined with the redox chemistry of the Na 4 Fe(CN) 6 catholyte thus enhances overall charge storage and energy density. The ADESIB delivers a capacity of about 113 mA h/g at 1 C, showing a 43% improvement over batteries with a regular single Na 2 SO 4 electrolyte. Additionally, the dual-electrolyte full-cell system is proved to reach a 84.7% capacity retention after 1000 cycles, mainly due to the synergy of the electrolytes in both sides. This pioneering research proposes an aqueous dual-electrolyte sodium-ion full cell, showing potential applications in a new sodium-ion full battery system.

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Section: Resultsmentioning

confidence: 97%

Section: ■ Results and Discussionmentioning

confidence: 99%

Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Zhou

Zheng

Zartashia

et al. 2022

ACS Appl. Mater. Interfaces

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“…Thus, the presented current is the sum of the local currents, covering the interdivision between the second and third stages. 6,47 Besides, it can be seen that the local fluctuation of the curve is large. This phenomenon can be explained that the porous titanium is loose inside and has an uneven local distribution, resulting in current instability.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

“…The explanation is the difference in mass transfer and local current, which leads to inconsistent fabrication of TNTs in different regions. Thus, the presented current is the sum of the local currents, covering the interdivision between the second and third stages. , …”

Section: Resultsmentioning

confidence: 99%

“…Titanium dioxide (TiO 2 ) nanotubes have been well known for their excellent properties in the field of their structural stability, high specific area, high porosity, and bio-compatibility. − Owing to these features, TiO 2 nanotubes (TNTs) have great potential for various applications such as photochemical catalysis, , hydrogen production, solar water splitting, , and solar cells. , At present, the main methods for fabricating TNTs include hydrothermal (HT), , anodization, − sol–gel, , and template methods . Anodization has obtained the foremost attention because it is a quick and effortless strategy, and it is simple to adjust the morphological characteristics of TNTs. − Furthermore, the HT method can not only directly synthesize TiO 2 nanotubes but also modify the surface of the as-prepared TNTs .…”

Section: Introductionmentioning

confidence: 99%

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Surface Modification of TiO₂ Nanotubes Prepared by Porous Titanium Anodization via Hydrothermal Reaction: A Method for Synthesis High-Efficiency Adsorbents of Recovering Sr Ions

et al. 2022

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The recycling of strontium ions (Sr 2+ ) from sea water has been well known for its good cost-effectiveness and environment friendliness. Herein, we modified the surface of TiO 2 nanotubes (TNTs) prepared by porous titanium anodization via hydrothermal (HT) reaction and synthesized a highly efficient adsorbent for the repeated recycling of Sr 2+ . TNTs with a high specific surface area were manufactured on porous titanium by internal anodic oxidation. The as-prepared TNTs were treated by HT method to synthesize adsorption materials with a tubular bottom and grass-type top structure loaded with Na + . The surface cracks were eliminated by annealing pretreatment, and the investigation found that the 6 h HT reaction most effectively increased the Na + content in the adsorbent. The as-synthesized adsorbents (HT-6TNTs) were used to recover Sr 2+ , and the maximum adsorption efficiency (approximately 100%) and adsorption equilibrium were observed within 10 h. Meanwhile, three consecutive cycles of adsorption experiments proved the uniform behavior of the HT-6TNTs in the reproducible recycling of Sr 2+ . In addition, by increasing the anodization time of TNTs from 0.5 to 3 h, the maximum adsorption capacity can be increased from 4.68 to 36.15 mg•unit −1 , approximately 7.7 times higher.

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Reversible wettability control of self-assembled TiO2 scaffolds on bacterial cellulose from superhydrophobicity to superhydrophilicity

Feng,

Wu,

Cui

et al. 2024

Cellulose

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Fabrication of high specific surface area TiO2 nanopowders by anodization of porous titanium

Cited by 13 publications

References 42 publications

Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Surface Modification of TiO₂ Nanotubes Prepared by Porous Titanium Anodization via Hydrothermal Reaction: A Method for Synthesis High-Efficiency Adsorbents of Recovering Sr Ions

Reversible wettability control of self-assembled TiO2 scaffolds on bacterial cellulose from superhydrophobicity to superhydrophilicity

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Fabrication of high specific surface area TiO2 nanopowders by anodization of porous titanium

Cited by 13 publications

References 42 publications

Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries

Surface Modification of TiO2 Nanotubes Prepared by Porous Titanium Anodization via Hydrothermal Reaction: A Method for Synthesis High-Efficiency Adsorbents of Recovering Sr Ions

Reversible wettability control of self-assembled TiO2 scaffolds on bacterial cellulose from superhydrophobicity to superhydrophilicity

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Surface Modification of TiO₂ Nanotubes Prepared by Porous Titanium Anodization via Hydrothermal Reaction: A Method for Synthesis High-Efficiency Adsorbents of Recovering Sr Ions