Tuning Na3Hf2Si2PO12 electrolyte surfaces by metal coating for high-rate and long cycle life solid-state sodium ion batteries

Shen, Cai; Tian, Haoqing; Liu, Jiahui; Liu, Shan; Dai, Lei; Xu, Junjie; Wang, Ling; Kong, Lingxin

doi:10.1039/d1ta09693a

Cited by 24 publications

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“…To further test the applicability of NHSP‐F 0.3 electrolyte in Na‐O 2 battery, we assembled an all‐solid‐state Na‐O 2 battery with NHSP‐F 0.3 electrolyte, and the electrolyte with lead coating on the sodium side to reduce the interfacial resistance. [ 32,33 ] As we all know, cathode catalysts are necessary and challenging for Na‐air batteries. [ 34–37 ] In this work, carbon nanotubes (CNTs) were chosen as air cathode, and an integrated air cathode (NHSP‐F 0.3 @CNT) was prepared by high temperature co‐firing method.…”

Section: Resultsmentioning

confidence: 99%

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

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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: Resultsmentioning

confidence: 99%

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

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“…The Lead coating was selected, ensured the uniform Na + migration, suppressed the dendrite, and the critical current density could enhance to 2.5 mA cm −2 at 60°C. [125] A buffer layer was another effective strategy to enhance the interface contact (Figure 5D) and suppressed the dendrite growth or side reactions at the interface. Generally, the polymeric film was highly flexible and favorable for building a conformal contact interface.…”

Section: The Anode/nasicons Interface Engineeringmentioning

confidence: 99%

“…The Lead coating was selected, ensured the uniform Na + migration, suppressed the dendrite, and the critical current density could enhance to 2.5 mA cm −2 at 60°C. [ 125 ]…”

Section: The Challenges Of the Nasicons‐based Solid‐state Electrolytesmentioning

confidence: 99%

NASICONs‐type solid‐state electrolytes: The history, physicochemical properties, and challenges

Zhang

Liu

You

et al. 2022

Interdisciplinary Materials

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Solid‐state electrolytes are critical for the development of next‐generation high‐energy and high‐safety rechargeable batteries. Among all the candidates, sodium (Na) superionic conductors (NASICONs) are highly promising because of their evident advantages in high ionic conductivity and high chemical/electrochemical stability. The concept of NASICONs was proposed by Hong and Goodenough et al. in 1976 by reporting the synthesis and characterization of Na1+xZr2(SixP3−x)O12 (0 ≤ x ≤ 3), which has attracted tremendous attention on the NASICONs‐type solid‐state electrolytes. In this review, we are committed to describing the development history of NASICONs‐type solid‐state electrolytes and elucidating the contribution of Goodenough as a tribute to him. We summarize the correlations and differences between lithium‐based and sodium‐based NASICONs electrolytes, such as their preparation methods, structures, ionic conductivities, and the mechanisms of ion transportation. Critical challenges of NASICONs‐structured electrolytes are discussed, and several research directions are proposed to tackle the obstacles toward practical applications.

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“…A sodium metal anode with a low potential (−2.71 V vs SHE) and a high theoretical capacity (1166 mAh g –1 ) has been considered to be an ideal anode for the next generation of sodium-ion batteries (SIBs). − However, the traditional SIBs with liquid nonaqueous electrolyte are usually accompanied by some challenges such as continuous side reaction, severe dendrites growth, and safety issues. − Solid electrolytes have attracted more and more attention recently because of their high ionic conductivity, excellent chemical/electrochemical stability, and high mechanical strength. − Moreover, solid electrolyte collocated with a high-voltage cathode will play an important role in the field of electric vehicles and energy storage . However, the poor interface contact and large interface resistance seriously hinders the further development of solid sodium-ion batteries (SSIBs). , …”

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“…14 However, the poor interface contact and large interface resistance seriously hinders the further development of solid sodium-ion batteries (SSIBs). 15,16 As we all know, there must be a point-to-point contact at the interface since both electrode and electrolyte are solid for SSIBs, which will cause excessive interface resistance and local polarization during cycling process. 17 According to Monroe and Newman's theory (polymer electrolyte), the current directly determines the growth rate of lithium dendrites (Formula 1).…”

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In Situ Construction of a Liquid Film Interface with Fast Ion Transport for Solid Sodium-Ion Batteries

et al. 2022

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Solid sodium-ion batteries (SSIBs) are considered as one of the promising energy storage systems because of their high safety and high energy density. However, the sodium metal anode presents poor wettability with a solid electrolyte, resulting in high interface impedance and dendrite growth, which severely limits their application in practice. Herein, a novel liquid film (Na-BP) interface is constructed between sodium and solid electrolyte (Na 3 Hf 2 Si 2 PO 12 ) with an excellent kinetic mass transfer ability and good fluidity, which could guarantee a close contact and fast charge transfer at interface. The symmetric cells with the designed interface show a high-rate and long-cycle performance and could cycle stably more than 1000 and 700 h at 0.2 and 0.5 mA cm −2 , respectively. The critical current density of the cells can reach 3.6 mA cm −2 at room temperature, which is the highest value in similar works.

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Tuning Na₃Hf₂Si₂PO₁₂ electrolyte surfaces by metal coating for high-rate and long cycle life solid-state sodium ion batteries

Abstract: Solid-state sodium ion batteries have attracted widely attentions due to its high energy density, low cost and high security. However, the poor contact and high interfacial resistance between sodium and...

Cited by 24 publications

References 43 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

NASICONs‐type solid‐state electrolytes: The history, physicochemical properties, and challenges

In Situ Construction of a Liquid Film Interface with Fast Ion Transport for Solid Sodium-Ion Batteries

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Tuning Na3Hf2Si2PO12 electrolyte surfaces by metal coating for high-rate and long cycle life solid-state sodium ion batteries

Abstract: Solid-state sodium ion batteries have attracted widely attentions due to its high energy density, low cost and high security. However, the poor contact and high interfacial resistance between sodium and...

Cited by 24 publications

References 43 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

NASICONs‐type solid‐state electrolytes: The history, physicochemical properties, and challenges

In Situ Construction of a Liquid Film Interface with Fast Ion Transport for Solid Sodium-Ion Batteries

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Tuning Na₃Hf₂Si₂PO₁₂ electrolyte surfaces by metal coating for high-rate and long cycle life solid-state sodium ion batteries

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