Investigation on the Structure and Properties of Na3.1Zr1.55Si2.3P0.7O11 as a Solid Electrolyte and Its Application in a Seawater Battery

Go, Wooseok; Kim, Jong-Woo; Pyo, Jinho; Wolfenstine, J.; Kim, Young‐Sik

doi:10.1021/acsami.1c17338

Cited by 27 publications

(32 citation statements)

References 37 publications

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“…This can also be confirmed by Raman spectroscopy, the wavelength range of 950-1030 cm −1 corresponds to monoclinic structure (Figure S1, Supporting Information). [24] As previously reported, the monoclinic phase exhibited higher ionic conductivity and lower activation energy (0.26 eV) due to its favorable Na + transport in the 3D channel. [17,25] In addition, it was found that the diffraction peak shifted gradually to a small angle as the content of doped F − increased (Figure 1c).…”

Section: Introductionsupporting

confidence: 59%

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries

et al. 2022

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their high ionic conductivity, good thermal stability, and high safety. [10,11] β″-Al 2 O 3 was the mostly studied sodium-ion conductor. And it had been successfully used in commercial sodium-sulfur batteries. [12] However, β″-Al 2 O 3 was sensitive to water, and the ionic conductivity decreased significantly after contacting with water, which severely limited its application in sodium-air batteries. Sulfide electrolytes had great advantages in ionic conductivity, but they are very easy to react with air and water. [13,14] NASICON electrolytes Na 1+x Zr 2 Si x P 3−x O 12 (0 ≤ x ≤ 3) had a high ionic conductivity, wide electrochemical window, and insensitive to water vapor, which helped them get a good application potential in sodium-air batteries. [15][16][17][18] In fact, NASICON electrolytes had been used in hybrid system sodium-air batteries. [19][20][21][22][23] However, the research of all-solid-state sodium-air batteries based on NASICON electrolyte was still insufficient and the catalytic mechanism in solid cathode was still unclear.Herein, we prepared an all-solid-state Na-O 2 battery based on elaborately designed NASICON electrolyte Na 3.2 Hf 2 Si 2.2 P 0.8 O 11.85 F 0.3 . Firstly, the conductivity of the electrolyte was regulated by F − -doping, and all the samples Na 3.2 Hf 2 Si 2.2 P 0.8 O 12−x F 2x (x = 0-0.25) were noted as NHSP-F 2x . The results proved that NHSP-F 0.3 electrolyte exhibited the highest ionic conductivity (2.39 × 10 −3 S cm −1 ) and the highest relative density than others. In addition, it is noteworthy that humidity has a significant influence on the performance of battery. The existence of water in atmosphere may change the path of cathodic reaction, which facilitated the generation of soluble discharge product (NaOH) and promoted reversible cycling performance. However, owing to NASICON electrolyte itself being hydrophilic, the water released during charging is unfavorable, and may reduce the sodium or discharge product percolate electrolyte. Therefore, how to ensure the compactness of electrolyte and the hydrophobicity of electrolyte/cathode interface is of great value for the development of all-solid-state sodium-air battery. This study provides important support for the research of all-solid-state sodium-air battery, and also has significant reference value for other solid-state metal-air batteries. Results and DiscussionAs shown in Figure 1a, the prepared electrolyte pellet is white and the diameter is about 1 cm. The NHSP-F 2x (x ≤ 0.25) electrolytes Sodium-air battery has great development potential due to its high energy density and high safety. However, most previous works are based on liquid electrolyte or polymer electrolyte, which will inevitably result in safety hazards such as electrolyte leakage and sodium dendrite growth. Herein, an all-solid-state Na-O 2 battery based on a well-designed NASICON-type electrolyte Na 3.2 Hf 2 Si 2.2 P 0.8 O 11.85 F 0.3 , which has high ionic conductivity (2.39 × 10 −3 S cm −1 ) and excellent chemical stability, is developed. Collabor...

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Section: Introductionsupporting

confidence: 59%

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries

et al. 2022

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“…[90,98] A recent report by Go et al reported that a vA-NASICON (Na 3.1 Zr 1.55 Si 2.3 P 0.7 O 11 ) has even better and more suitable properties compared to the Hongtype NASICON. [99] Due to the changed composition and the microstructure, higher ionic conductivity and a lower grain boundary resistance can be obtained. In addition to the higher bend strength, an improved voltage efficiency and higher power output for use in a seawater battery could be demonstrated in this way.…”

Section: Ceramic Membranesmentioning

confidence: 99%

“…In addition to the higher bend strength, an improved voltage efficiency and higher power output for use in a seawater battery could be demonstrated in this way. [99] NASICON structures are known for their use as materials in sodium-ion batteries, both as electrode material and solid electrolytes. Goodenough and Hing discovered this electrode material and showed the formula Na MMA(XO 4 ), where M and MA represent metals and X are silicon, phosphorus, or sulfur.…”

Section: Ceramic Membranesmentioning

confidence: 99%

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Dual‐Use of Seawater Batteries for Energy Storage and Water Desalination

Arnold

Wang

Presser

2022

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“…A study of Na super ion conductor (NASICON) as the solid electrolyte and separator of the anode and cathode has been focused on to increase the strength and ionic conductivity. [8] The research on anode active materials that play a role as the storage of sodium ions from seawater has been in-depth conducted. [9][10][11][12] In addition, steady progress of the current collector with electrocatalysts has been simultaneously investigated to reduce overpotentials generated in oxygen evolution reaction and oxygen reduction reaction (OER/ORR) at the cathode.…”

Section: Development Of Prismatic Cells For Rechargeable Seawater Bat...mentioning

confidence: 99%

Development of Prismatic Cells for Rechargeable Seawater Batteries

Kim

Shin

Jung

et al. 2022

Advanced Sustainable Systems

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Rechargeable seawater batteries (SWBs) using seawater as a catholyte have attracted extensive attention owing to the ocean's high theoretical energy density (3051 Wh L‐1, 3145 Wh kg‐1) and excellent thermal management. However, despite many improvements in materials and cell designs used in SWBs so far, there is a limit on the energy density in practical use, because of the lack of optimization of the cell structure. Herein, this work introduces a novel design by applying a rigid frame with an extended space called “prismatic‐type.” Consequently, an energy density of 23 Wh (242 Wh L‐1) is obtained by increasing the specific area of the unit cell and the capability of the anode active materials in the internal space. In addition, it enables the design of a discrete type that can improve the power density by increasing the surface area of the cathode current collectors. With the increased surface area, a peak power of 1162 mW is achieved for the discrete type compared to 727 mW for the integral type. These results suggest that these newly designed prismatic SWBs could contribute to practical applications in the near future.

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Investigation on the Structure and Properties of Na_3.1Zr_1.55Si_2.3P_0.7O₁₁ as a Solid Electrolyte and Its Application in a Seawater Battery

Cited by 27 publications

References 37 publications

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries

Dual‐Use of Seawater Batteries for Energy Storage and Water Desalination

Development of Prismatic Cells for Rechargeable Seawater Batteries

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Investigation on the Structure and Properties of Na3.1Zr1.55Si2.3P0.7O11 as a Solid Electrolyte and Its Application in a Seawater Battery

Cited by 27 publications

References 37 publications

Designing a Novel Electrolyte Na3.2Hf2Si2.2P0.8O11.85F0.3 for All‐Solid‐State Na‐O2 Batteries

Designing a Novel Electrolyte Na3.2Hf2Si2.2P0.8O11.85F0.3 for All‐Solid‐State Na‐O2 Batteries

Dual‐Use of Seawater Batteries for Energy Storage and Water Desalination

Development of Prismatic Cells for Rechargeable Seawater Batteries

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Product

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Investigation on the Structure and Properties of Na_3.1Zr_1.55Si_2.3P_0.7O₁₁ as a Solid Electrolyte and Its Application in a Seawater Battery

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries

Designing a Novel Electrolyte Na_3.2Hf₂Si_2.2P_0.8O_11.85F_0.3 for All‐Solid‐State Na‐O₂ Batteries