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Emerging carbon dot-based nanomaterials for stable and dendrite-free alkali metal anodes: Applications and perspectives
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DOI：10.1016/j.cclet.2026.112897.png)
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Abstract
En 中文
Alkali metal batteries (AMBs) have emerged as promising candidates for next-generation high-energy-density energy storage systems due to their high theoretical specific capacity and high output voltage. However, further application of AMBs is hindered by severe dendritic growth and large volume expansion of alkali metal anodes (AMAs) during cycling, as well as their unstable interphases. In this context, carbon dot-based nanomaterials (CDNMs), with their superior specific surface area, tunable heteroatom doping, and abundant surface functional groups, have been extensively investigated to stabilize AMAs, demonstrating remarkable potential in addressing aforementioned issues. Considering the rapidly growing research enthusiasm in this topic in recent years, here, we comprehensively summarize recent progress in application of CDNMs in stable and dendrite-free AMAs. First, the critical challenges of alkali metal anodes and the corresponding modification strategies in alkali metal batteries are discussed. Furthermore, the structure and properties of carbon dots (CDs) are introduced, as well as the advantages, disadvantages, and research progress of various CDs preparation methods are summarized from both the top-down and bottom-up perspectives. In addition, the relationship between fabrication methods, micro/nanostructure, and electrochemical performance are systematically summarized and discussed. Finally, in light of the current research status, the challenges and opportunities of the application of CDNMs in AMBs are proposed.
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8.9
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1.2W
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3.8W
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