Chao MENG , Yan ZHANG , Ning WANG , Xue-qing ZHENG , De-yu KONG , Han HU , Ming-bo WU
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Microstructure modulation strategies from pitch molecules to derived carbon materials for electrochemical energy storage
Pitch is a complex mixture of polycyclic aromatic hydrocarbons and their non-metal derivatives that has a high carbon content. Using pitch as a precursor for carbon materials in alkali metal ion (Li+/Na+/K+) batteries has become of great interest. However, its direct pyrolysis often leads to microstructures with a high orientation and small interlayer spacing due to uncontrolled liquid-phase carbonization, resulting in subpar electrochemical performance. It is therefore important to control the microstructures of pitch-derived carbon materials in order to improve their electrochemical properties. We evaluate the latest progress in the development of these materials using various microstructural engineering approaches, highlighting their use in metal-ion batteries and supercapacitors. The advantages and limitations of pitch molecules and their carbon derivatives are outlined, together with strategies for their modification in order to improve their properties for specific applications. Future research possibilities for structure optimization, scalable production, and waste pitch recycling are also considered.
期刊介绍：
New Carbon Materials is a scholarly journal that publishes original research papers focusing on the physics, chemistry, and technology of organic substances that serve as precursors for creating carbonaceous solids with aromatic or tetrahedral bonding. The scope of materials covered by the journal extends from diamond and graphite to a variety of forms including chars, semicokes, mesophase substances, carbons, carbon fibers, carbynes, fullerenes, and carbon nanotubes. The journal's objective is to showcase the latest research findings and advancements in the areas of formation, structure, properties, behaviors, and technological applications of carbon materials. Additionally, the journal includes papers on the secondary production of new carbon and composite materials, such as carbon-carbon composites, derived from the aforementioned carbons. Research papers on organic substances will be considered for publication only if they have a direct relevance to the resulting carbon materials.
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