Batteries: Oxygen Vacancies Evoked Blue TiO<sub>2</sub>(B) Nanobelts with Efficiency Enhancement in Sodium Storage Behaviors (Adv. Funct. Mater. 27/2017)

Zhang, Yan; Ding, Zhiying; Foster, Christopher W.; Banks, Craig E.; Qiu, Xiaoqing; Ji, Xiaobo

doi:10.1002/adfm.201770161

Cited by 21 publications

(34 citation statements)

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“…OVs evoked blue TiO 2 exhibited the expanded lattice galleries, which could suppress crystal transformation induced by the Na + insertion, ensuring the excellent structure stability. Moreover, the sodium storage mechanism was dominated by the pseudocapacitance process due to the incorporation of OVs, which is responsible for fast sodiation/desodiation process and long‐term cyclability [93] . Defect‐rich TiO 2 nanocrystals showed similar phenomenon to this work [30b] .…”

Section: Sodium Storage Performancesupporting

confidence: 68%

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Wang

Zhang

et al. 2020

Chemistry An Asian Journal

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Titanium dioxide (TiO2) is a promising anode material for sodium‐ion batteries (SIBs) due to its low cost, natural abundance, nontoxicity, and excellent electrochemical stability. Oxygen vacancies, the most common point defects in TiO2, can dramatically influence the physical and chemical properties of TiO2, including band structure, crystal structure and adsorption properties. Recent studies have demonstrated that oxygen‐deficient TiO2 can significantly enhance sodium storage performance. Considering the importance of oxygen vacancies in modifying the properties of TiO2, the structural properties, common synthesis strategies, characterization techniques, as well as the contribution of oxygen‐deficient TiO2 on initial Coulombic efficiency, cyclic stability, rate performance for sodium storage are comprehensively described in this review. Finally, some perspectives on the challenge and future opportunities for the development of oxygen‐deficient TiO2 are proposed.

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Section: Sodium Storage Performancesupporting

confidence: 68%

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Wang

Zhang

et al. 2020

Chemistry An Asian Journal

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“…The working mechanism of TiO 2 (B) in SIBs is still controversial: the insertion and extraction of lithium lead to a distinct shift of diffraction peaks (Figure 23g), but in an SIB system, the peak shift during discharge and charge is almost unrecognizable (Figure 23h). [ 205,206 ] Thus, among the three kinds of TiO 2 phases (rutile, anatase, and bronze), anatase TiO 2 is the most extensively explored type, and probably also the most promising type for practical applications.…”

Section: Intercalation‐type Materialsmentioning

confidence: 99%

“…Though the enhancement in capacity and rate performance from crystallographic modification has been demonstrated in many reports, neither the thermodynamic analysis of lattice defect generation nor evolution of defects in sodiation and de‐sodiation processes were provided. [ 197,200,206,213–215 ]…”

Section: Intercalation‐type Materialsmentioning

confidence: 99%

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Yang

Rogach

2020

Advanced Energy Materials

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type is cheap but with a rather low energy density and cannot survive many cycles; the latter type has higher energy density and longer cycle life, but is more expensive. [3] Both those secondary batteries suffer from the memory effect, and their use is under serious environmental concerns due to the involvement of the toxic lead and cadmium. [3] Nickel-metal hydride (Ni-MH) batteries can deliver higher energy capacity (the amount of stored energy in per unit mass, usually measured in Wh kg -1 ) and are more environmentally friendly, and from these reasons they used to dominate the market for electrical tools and EV. [4] At present, however, the share of Ni-MH batteries is shrinking, as we have another choice with a much higher energy density, namely lithium ion batteries (LIBs). The energy density of Ni-MH batteries is 60-70 Wh kg -1 , and that of LIBs was about 110 Wh kg -1 when they were commercially launched. [5] In the last decade, the price of LIBs decreased by ≈80% (now reaching <$200 kWh -1 ), and their energy density has been significantly improved (>200 Wh kg -1 ). [6] Other advantages of LIBs include long cycle life, low self-discharge, and absence of the memory effect. Thus far, being cost-effective and performance-competitive, LIBs have conquered the market for various important applications such as mobile phones, portable electronics, and EV.Beyond the state-of-the-art LIBs, efforts of battery researchers are going into following directions. The energy density of gasoline is about 13 kWh kg -1 , a value LIBs would never get close to. [7] It is normal to have "range anxiety" in the transition from petrol vehicles to EV. To eliminate such anxiety and make LIBs more competitive, intensive efforts are being placed into the research of high-capacity electrode materials for LIBs (such as silicon and lithium metal anode) and other battery systems (e.g., lithium-sulfur, lithium-air, and zinc-air batteries). [8] Another important direction is the development of safer batteries, such as aqueous and all-solid-state batteries, as safety concerns on LIBs are mainly related to the use of flammable electrolytes. [9,10] At the same time, the demand for LIBs worldwide is still increasing, and the production of the LIBs is growing rapidly, while the important constituting elements of those batteries, especially lithium and cobalt, are limited in supply. [5] Even though the availability of lithium at the present time may not be the major problem, and the recycling of used LIBs is under consideration, the world is faced with the potential risks in supply chains, as the annual global lithium production has already surpassed 0.085 million tons in 2018, while the total lithium reserve is estimated to be ≈14 million The increase in electricity generation poses growing demands on energy storage systems, thus offering a chance for the success of the reliable and cost-effective energy storage technologies. Sodium ion batteries are emerging as such a technology, which is however not yet mature enough to enter the market. At th...

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“…For example, the introduction of oxygen vacancies and carbon coating render TiO 2 (B) an improved electric conductivity and lower energy barrier of sodiation. As a result, favorable Na + ions insertion at high current densities can be improved, making TiO 2 (B) nanobelts with oxygen vacancies anode exhibits a remarkable high‐rate and superior cyclability in comparison to those of pristine TiO 2 (B) . As shown in Figure b, Yan and co‐workers fabricated a NIC, using titanium dioxide/carbon nanocomposite (TiO 2 /C) as anode, and a 3D nanoporous carbon as cathode.…”

Section: Materials For Sodium‐ion Capacitorsmentioning

confidence: 99%

Advanced Materials for Sodium‐Ion Capacitors with Superior Energy–Power Properties: Progress and Perspectives

Zhang

et al. 2019

Small

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10. 1002/smll.201902843. Developing electrochemical energy storage devices with high energy-power densities, long cycling life, as well as low cost is of great significance. Sodium-ion capacitors (NICs), with Na + as carriers, are composed of a high capacity battery-type electrode and a high rate capacitive electrode. However, unlike their lithium-ion analogues, the research on NICs is still in its infancy. Rational material designs still need to be developed to meet the increasing requirements for NICs with superior energy-power performance and low cost. In the past few years, various materials have been explored to develop NICs with the merits of superior electrochemical performance, low cost, good stability, and environmental friendliness. Here, the material design strategies for sodium-ion capacitors are summarized, with focus on cathode materials, anode materials, and electrolytes. The challenges and opportunities ahead for the future research on materials for NICs are also proposed. www.advancedsciencenews.com www.small-journal.com to LICs, NICs are still in their infancy stage with many difficulties for their practical application. [23] For example, many battery-type electrode materials for lithium ion storage cannot meet the requirements of NIC devices due to the large size of Na + ions. In addition, due to the redox potential of Na/Na + is 0.3 V higher than that of Li/Li + , the working voltage ranges of NICs are expected to be a little narrower than LICs, which may influence the energy densities of NICs. Moreover, the electrolyte should provide a rapid migration process of Na + ions. Therefore, the rational material design will play crucial roles in the electrochemical performance improvement of NICs.So far, there are few papers which summarize the recent progress in NIC research area. In particular, the materials used in NICs, including anode, cathode, and electrolyte, have not been systematically reviewed. In this article, we focus on the latest advances in the cathode materials, anode materials, and electrolytes for NICs. First, we review the energy storage mechanism and demonstrate the configurations of NICs; then, we summarize the recent progress on electrode materials, including anode materials, cathode materials, as well as different electrolytes for NICs; finally, the challenges and future prospects for NIC research are proposed.

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Batteries: Oxygen Vacancies Evoked Blue TiO₂(B) Nanobelts with Efficiency Enhancement in Sodium Storage Behaviors (Adv. Funct. Mater. 27/2017)

Cited by 21 publications

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Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Advanced Materials for Sodium‐Ion Capacitors with Superior Energy–Power Properties: Progress and Perspectives

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Batteries: Oxygen Vacancies Evoked Blue TiO2(B) Nanobelts with Efficiency Enhancement in Sodium Storage Behaviors (Adv. Funct. Mater. 27/2017)

Cited by 21 publications

References 0 publications

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Anodes and Sodium‐Free Cathodes in Sodium Ion Batteries

Advanced Materials for Sodium‐Ion Capacitors with Superior Energy–Power Properties: Progress and Perspectives

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Batteries: Oxygen Vacancies Evoked Blue TiO₂(B) Nanobelts with Efficiency Enhancement in Sodium Storage Behaviors (Adv. Funct. Mater. 27/2017)