Ali Muhammad, Ahsan Muhammad Tayyab, Mehmood Ahtisam, Ishfaq Ayesha, Ali Ghulam, Akram Muhammad Aftab, Javed Sofia, Ali Zeeshan
School of Chemical and Materials Engineering (SCME), School of Interdisciplinary Engineering & Sciences, U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), H-12, Islamabad 44000, Pakistan.
School of Materials Science and Engineering, Peking University, Beijing 100871, China.
ACS Omega. 2022 Aug 22;7(34):30440-30446. doi: 10.1021/acsomega.2c03819. eCollection 2022 Aug 30.
Binary metal chalcogenides (TMCs) have emerged as a potential candidate for lithium-ion batteries due to their availability, abundance, chemical properties, and high theoretical capacities. Despite these characteristics, they suffer from significant volume change, limited life cycle, and inferior rate capabilities which hinder their practical applications. These issues can be addressed by selecting low-cost nanostructure metal combinations coupled with a carbon matrix, which tackles significant volume change to give prolonged cycle life and high-rate capabilities. Herein, novel MOF-derived aluminum copper selenide (ACSe@C) nanospheres embedded in a carbon matrix are synthesized via a facile solvothermal route. Owing to their uniform porous structure, ACSe@C nanospheres exhibit excellent electrochemical performance as an anode material for Li-ion batteries. ACSe@C delivers a high specific capacity of 633.6 mAh g at 0.1 A g and a good rate capability of 532 mAh g at 0.1 A g and 400 mAh g at 8 A g. This study demonstrates that ACSe@C is a good candidate for next-generation energy-storage devices.
二元金属硫族化合物（TMCs）因其来源广泛、储量丰富、化学性质以及高理论容量，已成为锂离子电池的潜在候选材料。尽管具有这些特性，但它们仍存在显著的体积变化、有限的循环寿命和较差的倍率性能，这些问题阻碍了它们的实际应用。通过选择低成本的纳米结构金属组合并结合碳基体，可以解决这些问题，从而应对显著的体积变化，实现更长的循环寿命和高倍率性能。在此，通过简便的溶剂热法合成了嵌入碳基体中的新型金属有机框架衍生的铝铜硒化物（ACSe@C）纳米球。由于其均匀的多孔结构，ACSe@C纳米球作为锂离子电池的负极材料表现出优异的电化学性能。ACSe@C在0.1 A g下具有633.6 mAh g的高比容量，在0.1 A g下具有532 mAh g的良好倍率性能，在8 A g下具有400 mAh g的倍率性能。这项研究表明，ACSe@C是下一代储能装置的良好候选材料。
