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Ion de Indio Trivalente que Permite un Cátodo de Óxido de Vanadio Hidratado Químicamente Estable para Baterías de

Yiwen Xiao¹, Chaoqiong Zhu¹, Jiaqi Li¹

¹School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China.

ACS applied materials & interfaces

|February 25, 2026

Abstract:

Aqueous zinc batteries (AZBs) have emerged as a promising energy storage technology due to their intrinsic safety and environmental compatibility. However, structural instability and sluggish Zn²⁺ diffusion kinetics of cathode materials hinder the development of AZBs. To address these challenges, we synthesized the cathode material In-VO by incorporating trivalent In³⁺ ions into hydrated vanadium oxide. As effective structural pillars, preintercalated In³⁺ ions can significantly expand the interlayer spacing and enhance the structural stability of In-VO, thereby enabling highly reversible Zn²⁺ insertion/extraction. In-VO cathode exhibits exceptional cycling stability of a high specific capacity of 398.7 mAh g^-1 at 0.1 A g^-1 with 92% retention over 100 cycles at 0.2 A g^-1 and remarkable rate capability of 290.5 mAh g^-1 at 5.0 A g^-1. Moreover, systematic analyses confirm the effectiveness on the suppression of vanadium dissolution and parasitic reactions. This work provides a feasible strategy for designing high-performance cathodes for advanced AZBs.

Palabras clave:

baterías de zinc acuosas preintercalación de iones estabilidad estructural óxidos de vanadio

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