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This research demonstrates high proton conductivity in a novel telluroniobate, suggesting potential applications in energy storage.
A novel tellurium‐containing polyoxoniobate, H 18 K 20 {[Nb 13 O 42 ](Te 4 Nb 9 O 33 ) 4 }·50H 2 O ( 1 ), was synthesized using TeO 3 2 − as a template agent. The structure consists of a new 13‐metal core basic building unit {Nb 13 }, which differs from the classical Keggin‐type and Silverton‐type {XM 12 } unit. Four {Te 4 Nb 9 } units further encapsulate the central {Nb 13 } core, forming a unique core–shell tetrahedron, consistent with the morphology of macroscopic crystals. The compound 1 demonstrates excellent proton conductivity, reaching 1.1 × 10 −2 S·cm −1 at 85°C and 98% relative humidity, highlighting its potential as a high‐performance proton‐conducting material.
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Jia et al. (2026) studied this question.
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