Synthesis of Na2O-RE2O3-SiO2(RE=Sm,Gd,Dy,Y,Ho,Er and Yb) System Glasses and Their Electrical Properties.

Asahi, Taro; Kamada, Masaya; Imai, Shinya; Nakayama, Susumu

doi:10.2109/jcersj.108.1260_774

Cited by 7 publications

(5 citation statements)

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“…Arrhenius plots of a) selected sodium-based solid-state electrolytes [28,32,94,98] and b) some of the highly conducting sodium silicates. [55,56,58,63,66,73,97,98,106,107] N5-type materials. [73] The NYS prepared using tape casting has an activation energy of 0.30 eV, with an ionic conductivity of 1 Â 10 À3 S cm À1 at RT.…”

Section: Techniquementioning

confidence: 99%

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Progress in Sodium Silicates for All‐Solid‐State Sodium Batteries—a Review

2023

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All solid‐state sodium batteries (ASSSBs) are considered a promising alternative to lithium‐ion batteries due to increased safety in employing solid‐state components and the widespread availability and low cost of sodium. As one of the indispensable components in the battery system, organic liquid electrolytes are the currently used electrolytes due to their high‐ionic conductivity (10−2 S cm−1) and good wettability; however, their low‐thermal stability, flammability, and leakage tendency pose safety concerns. The growing sodium‐ion battery technology with solid electrolytes is a viable solution due to their improved safety. However, solid electrolytes suffer from insufficient ionic conductivity at room temperature (10−4–10−3 S cm−1), poor interface stability, high charge‐transfer resistance, and low wettability, yielding inferior battery performance. Sodium rare‐earth silicates are a new class of materials with a 3D structure framework similar to sodium‐superionic conductors (NASICONs). These silicates can be used as a solid electrolyte for solid‐state sodium batteries due to their high‐ionic conduction (10−3 S cm−1) at 25 °C. Herein, the sodium rare‐earth silicate synthesis, crystal structure, ion‐conduction mechanism, doping, and electrochemical properties are discussed. This emerging type of inorganic solid electrolyte can pave the way to building next‐generation ASSSBs.

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Section: Techniquementioning

confidence: 99%

“…Figure 7. Arrhenius plots of a) selected sodium-based solid-state electrolytes[28,32,94,98] and b) some of the highly conducting sodium silicates [55,56,58,63,66,73,97,98,106,107]. …”

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confidence: 99%

Progress in Sodium Silicates for All‐Solid‐State Sodium Batteries—a Review

2023

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“…Alexander reported that (Na 2 O) 39.5 (Y 2 O 3 ) 5.9 (SiO 2 ) 54. 6 glass showed a relatively high ionic conductivity of 10 À 3 S cm À 1 at 300 1C, although it is slightly lower than Na 5 YSi 4 O 12 ceramics [3]. In glass, Y 3 þ ions are considered to be network modifiers that occupy the sites surrounded by non-bridging oxygen (NBO) belonging to SiO 4 tetrahedra, similar to Na þ .…”

Section: Introductionmentioning

confidence: 99%

“…Yamashita et al found that Na 5 REP 0.34 -Si 2.7 O 9 (Narpsio) glass ceramics, which have similar structures as that of NaRESi 4 O 12 , have a conductivity of 1 Â 10 À 1 S cm À 1 at 300 1C, which is high compared with β-alumina or NASICONs [5]. They investigated the thermal and electrical properties of glass based on Na 5 [6][7][8][9]. Among these, Li 2 O-Y 2 O 3 -SiO 2 glass has the requisite properties for use in solid-state pH sensors [10].…”

Section: Introductionmentioning

confidence: 99%

Influence of yttrium component on water corrosion resistance of sodium ion conducting silicate glass

Kiyono

Maruoka

Asahi

et al. 2015

Ceramics International

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“…5,6 Furthermore, glasses have some advantages in terms of high chemical durability due to the absence of grain boundaries and the easy shaping and mechanical processing. In this work, electrical properties of the glass and ceramic with (Na 2 O) 35.7 (RE 2 O 3 ) 7.2 (SiO 2 ) 57.1 composition were investigated, along with the response characteristics of the potentiometric CO 2 gas sensor in which (Na 2 O) 35.7 (Y 2 O 3 ) 7.2 (SiO 2 ) 57.1 glass or ceramic was used as a solid electrolyte.…”

Section: Introductionmentioning

confidence: 99%