High Purity Zinc Telluride (ZnTe, >99.99%, 200 mesh) Powder for Aqueous Zn-Te Battery Cathode, 50-100 g/Bottle, CAZTBCHPZnTe

High-purity zinc telluride (ZnTe) powder is a specialized semiconducting and intercalation/conversion cathode material for advanced aqueous zinc-ion and zinc-tellurium hybrid batteries. Instead of starting with elemental tellurium (Te) or suffering from the high initial dissolution and polyselenide/polytelluride shuttling associated with pure chalcogen cathodes, utilizing pre-formed ZnTe bypasses several aggressive degradation pathways while providing a stable host matrix for reversible electrochemical cycling.

The key electrochemical advantages of the ZnTe powder for aqueous Zn-Te battery are: (1) Pre-Loaded Zinc Source & Conversion/De-alloying: By introducing tellurium already bound in a zinc matrix (ZnTe), the system starts in a chemically balanced state. During charging, ZnTe undergoes a controlled extraction of zinc ions (Zn^{2+}), converting into elemental tellurium or intermediate zinc-deficient phases. During discharge, zinc ions reversibly re-intercalate or alloy back into the tellurium matrix to reform ZnTe. (2) Suppression of Initial Capacity Loss and Dissolution: Elemental chalcogens (S, Se, Te) often suffer from severe irreversible capacity loss and aggressive intermediate dissolution during the very first cycle. Pre-synthesized ZnTe stabilizes the initial structural framework, mitigating the uncontrolled dissolution of active mass into the aqueous electrolyte. (3) Favorable Electronic Conductivity: As a II-VI direct bandgap semiconductor with intrinsic electronic conductivity superior to sulfur and selenium systems, ZnTe maintains efficient charge-transfer kinetics, enabling strong rate performance and low internal polarization without requiring massive amounts of conductive carbon additives. 

References: 

1. Z. Chen, et al. Aqueous Zinc–Tellurium Batteries with Ultraflat Discharge Plateau and High Volumetric Capacity, Adv. Mater., 2020, 32, 2001469
2. W. Ni, et al. Research progress on ZnSe and ZnTe anodes for rechargeable batteries, Nanoscale (2022) 14 (27): 9609–9635.