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<p>The development of high-performance cathode materials is crucial for advancing aqueous zinc-ion batteries (AZIBs). Molybdenum dioxide (MoO₂) is a promising candidate, but its performance is often limited by sluggish kinetics and structural instability. This work addresses these challenges through a synergistic synthesis strategy employing n-butanol (nBuOH) and CTAB to fabricate a high-performance hexagonal MoO₂-based cathode. It is revealed that nBuOH and CTAB play distinct roles as a structure-directing and an interface-optimizing agent, respectively. Their synergy yields a cathode with exceptional rate capability (2&#xa0;A g⁻¹) and long-term cyclability (101 mAh g⁻¹ after 3000 cycles). The enhanced performance is linked to a capacitive-dominated mechanism facilitated by rapid ion transport in the nBuOH-derived architecture and stable charge transfer at the CTAB-induced interface. This study offers a general design concept for developing advanced electrode materials by decoupling structural and interfacial functionalities.</p>

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Synergistic engineering of CTAB-modified MoO2 microspheres for stable and kinetics-enhanced zinc-ion batteries

  • 期刊论文

  • 发表日期：

    2026年7月7日

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  • Yazi Luo,
  • Yuqing Ji

摘要

The development of high-performance cathode materials is crucial for advancing aqueous zinc-ion batteries (AZIBs). Molybdenum dioxide (MoO₂) is a promising candidate, but its performance is often limited by sluggish kinetics and structural instability. This work addresses these challenges through a synergistic synthesis strategy employing n-butanol (nBuOH) and CTAB to fabricate a high-performance hexagonal MoO₂-based cathode. It is revealed that nBuOH and CTAB play distinct roles as a structure-directing and an interface-optimizing agent, respectively. Their synergy yields a cathode with exceptional rate capability (2 A g⁻¹) and long-term cyclability (101 mAh g⁻¹ after 3000 cycles). The enhanced performance is linked to a capacitive-dominated mechanism facilitated by rapid ion transport in the nBuOH-derived architecture and stable charge transfer at the CTAB-induced interface. This study offers a general design concept for developing advanced electrode materials by decoupling structural and interfacial functionalities.