Abstract Traditionally, transition metal oxides (TMOs)-based electrodes suffer from remarkable volume expansion and high risk of electrode pulverization during lithium intercalation and extraction. To tackle this issue, various structures have been incorporated into electrode structural design of TMOs. Herein, through the in-situ growth of cobalt-based metal organic frameworks (MOFs) and subsequent calcination at various temperatures, MOF-derived Co3O4 nanosheets of three distinct structures are obtained on carbon cloth. Through investigation into the effect of temperature on microstructure and microstructure-electrochemical property relationship, the carbon cloth based Co3O4 nanosheets electrode obtained at 500 °C is found out to demonstrate the highest lithium storage capabilities due to embedded porous structures and ultrafine crystallite sizes of Co3O4. This work presents an effective approach to optimize electrochemical properties, which is based on the temperature-induced electrode design. The findings in this study can be translated to the design of other high-area-capacity CC-based electrode for use in lithium ion batteries.

中文翻译：

---

Co3O4 的温度诱导微观结构优化用于实现高面积容量的碳布基锂离子电池负极

摘要 传统上，基于过渡金属氧化物（TMOs）的电极在锂嵌入和提取过程中存在显着的体积膨胀和电极粉化的高风险。为了解决这个问题，各种结构已被纳入到 TMO 的电极结构设计中。在此，通过钴基金属有机骨架 (MOF) 的原位生长和随后在不同温度下的煅烧，在碳布上获得了三种不同结构的 MOF 衍生的 Co3O4 纳米片。通过研究温度对微观结构的影响和微观结构-电化学性能关系，发现在 500 °C 下获得的碳布基 Co3O4 纳米片电极由于嵌入的多孔结构和 Co3O4 的超细晶粒尺寸而表现出最高的锂存储能力。这项工作提出了一种优化电化学性能的有效方法，该方法基于温度诱导的电极设计。这项研究的发现可以转化为用于锂离子电池的其他高面积容量 CC 电极的设计。