Nanostructured LiTi2(PO4)3 anode with superior lithium and sodium storage capability aqueous electrolytes

Xu, Tong; Zhao, Mingshu; Zhou, Su; Duan, Wenyuan; Shi, Yuan-Zhe; Li, Zheng; Pol, Vilas G.; Song, Xiaoping

doi:10.1016/j.jpowsour.2020.229110

Cited by 15 publications

(16 citation statements)

References 52 publications

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“…The diffusion control current is proportional to the square root of the scan rate, and the capacitive current is proportional to the scan rate. [48] Figure 6b shows a standard linear relationship between the peak current and the square root of the scan rate, indicating that the electrochemical behavior for Na þ in NTP@C composite anode is a diffusion-controlled process. The sodium ion diffusion coefficient for electrode materials dominated by the diffusion-controlled process can be calculated by the Randles-Sevcik equation [49] i ¼ 0:4463ðF 3 NTP hollow nanoparticles [24] Carbon nanofibers 108.3 (5.5 A g À1 ) 97.2% (3000) (5.5 A g À1 ) Graphene-integrated NTP/C [56] Graphene 88.0 (2 A g À1 ) 92% 100 (2 A g À1 ) NTP/C [27] Acetylene black 89.8 (2 C) 61% (500) (2 C)…”

Section: Resultsmentioning

confidence: 93%

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

Zhao

et al. 2022

Energy Tech

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NASICON-type material NaTi 2 (PO 4 ) 3 has a suitable working potential (À0.87 V vs saturated calomel electrode) in aqueous sodium-ion cells. Nevertheless, the inherent electronic conductivity in the internal core and external shell limits its rate and cycling performance. Herein, a carbon-coated porous nanosphere NaTi 2 (PO 4 ) 3 material is synthesized by the solvothermal method. This structure effectively improves the electrical conductivity, enlarges the contact area with the electrolyte, and facilitates the rapid intercalation/deintercalation of Na þ . It delivers an excellent rate behavior of 123.59, 113.55, 102.81, 90.85, and 60.95 mAh g À1 at 0.2, 0.5, 1, 2, and 5 A g À1 , respectively. Improved long cyclability under a 5 A g À1 high current density is also demonstrated by a capacity retention of 70.2% over 500 cycles and an average Coulombic efficiency of 98%. As-prepared core-shell porous nanosphere NaTi 2 (PO 4 ) 3 exhibits potentially practical applications in a new type of aqueous sodium-ion battery system.

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Section: Resultsmentioning

confidence: 93%

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

Zhao

et al. 2022

Energy Tech

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“…To explore the electrochemical mechanism of the BDI desalination technique under various salt concentrations, a BDI electrode with stable electrochemical performance is essential. Here, the well-studied NASICON-type NaTi 2 (PO 4 ) 3 with high ionic mobility, reasonable theoretical deionization capacity, and excellent crystal structural stability was selected and used in this study as a representative BDI electrode. ,,,− NaTi 2 (PO 4 ) 3 @C was prepared via a simple sol–gel chemical synthesis method referring to the well-documented recipe in the , literature . Due to the low intrinsic electrical conductivity of the as-synthesized NaTi 2 (PO 4 ) 3 material, an extra carbon layer was coated on NaTi 2 (PO 4 ) 3 particles through the thermal pyrolysis of citric acid.…”

Section: Resultsmentioning

confidence: 99%

Salt Concentration-Regulated Desalination Mechanism Evolution in Battery Deionization for Freshwater

Wei

Feng

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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Battery deionization (BDI) based on the Faradaic process featuring with large ion storage capacity and a high energy efficiency holds great prospects for the next-generation desalination application. Owing to the intrinsic salt ion insertion and the electrochemical redox nature of BDI, the ion insertion dynamics within the electrode during the electrochemical redox processes could be strongly influenced by the properties of the electrolyte, especially the salt concentration. Although tremendous effort has been devoted to developing the BDI electrode materials, the relationship between the detailed desalination dynamics and salt concentration in electrolytes has never been systematically studied since the invention of this technology. To unveil the underlying behaviors, we have employed the NaTi 2 (PO 4 ) 3 @C electrode as the representative BDI electrode and systematically investigated the electrochemical desalination dynamics under different concentration NaCl solutions. For the first time, standard freshwater has been obtained from NaCl solution via the BDI technique. Interestingly, the intrinsic desalination mechanism evolves from a diffusioncontrolled charge contribution process into the capacitive charge contribution-dominated process as the NaCl concentration in water decreases from normal saline water into freshwater. The present study demonstrated the possibility of achieving freshwater with BDI. The insights obtained here on the ion storage dynamics paves the way for developing high-efficiency BDI electrodes toward practical desalination applications for freshwater.

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“…The Na 0.44 MnO 2 cathode material was synthesized by the sol–gel method reported earlier . Initially, NaOH and C 4 H 6 MnO 4 were dissolved in deionized water separately to form solutions A and B, then solution A was added dropwise to solution B.…”

Section: Methodsmentioning

confidence: 99%

“…The Na 0.44 MnO 2 cathode material was synthesized by the sol−gel method reported earlier. 29 Initially, NaOH and C 4 H 6 MnO 4 were dissolved in deionized water separately to form solutions A and B, then solution A was added dropwise to solution B. The solution, as mentioned above, was stirred for 2 h at room temperature before being dried at 80 °C to get a dark powder.…”

Section: Nh Vomentioning

confidence: 99%

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

et al. 2021

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Divanadium pentoxide as an electrode material in the aqueous-based battery has been widely explored because of its higher theoretical capacity and potential crystal structure. Here, in this work, we present vanadium pentoxide modified with graphene (V 2 O 5 @G) as an anode material in an aqueous rechargeable sodium-ion battery (ARSB) prepared via a facile one-step hydrothermal method followed by annealing. The complete ARSB was assembled by employing Na 0.44 MnO 2 as the cathode material, which was synthesized via the sol−gel method. The assembled ARSBs were subjected to cyclic voltammetry, charge− discharge, and rate performance; it has been suggested that incorporation of graphene has a positive effect on the overall battery performance observed through charge−discharge (38.2 mAh g −1 ), cyclic capacity retention (200 cycles at 1A g −1 with a retention rate of 53%), and rate performance in contrast with pristine vanadium pentoxide. Further investigation suggested V 2 O 5 @G had larger sodium storage capacity, improved rate capability, increased Na + diffusivity, and reduced electrochemical reaction resistance.

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Nanostructured LiTi2(PO4)3 anode with superior lithium and sodium storage capability aqueous electrolytes

Cited by 15 publications

References 52 publications

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

Salt Concentration-Regulated Desalination Mechanism Evolution in Battery Deionization for Freshwater

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

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Nanostructured LiTi2(PO4)3 anode with superior lithium and sodium storage capability aqueous electrolytes

Cited by 15 publications

References 52 publications

A High Rate and Long Cycling Performance NaTi2(PO4)3 Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

A High Rate and Long Cycling Performance NaTi2(PO4)3 Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

Salt Concentration-Regulated Desalination Mechanism Evolution in Battery Deionization for Freshwater

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

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Product

Resources

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A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries