Wei Hao, Tian Yuan, An Yongling, Feng Jinkui, Xiong Shenglin, Qian Yitai
Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), School of Materials Science and Engineering China
School of Chemistry and Chemical Engineering, Shandong University Jinan 250061 China.
RSC Adv. 2020 Aug 28;10(53):31889-31893. doi: 10.1039/d0ra05615d. eCollection 2020 Aug 26.
Porous materials have many applications, such as energy storage, as catalysts and adsorption Nevertheless, facile synthesis of porous materials remains a challenge. In this work, porous lithium cobalt oxide (LiCoO) is fabricated directly from Co-based metal-organic frameworks (MOFs, ZIF-67) and lithium salt a facile solid state annealing approach. The temperature affect on the microstructure of LiCoO is also investigated. The as-prepared LiCoO shows a uniform porous structure. As a cathode for a lithium-ion battery (LIB), the LiCoO delivers excellent stability and superior rate capability. The as-prepared porous LiCoO delivers a reversible capacity of 106.5 mA h g at 2C and with stable capacity retention of 96.4% even after 100 cycles. This work may provide an alternative pathway for the preparation of porous materials with broader applications.
多孔材料有许多应用，如能量存储、作为催化剂和吸附剂。然而，多孔材料的简便合成仍然是一个挑战。在这项工作中，多孔钴酸锂（LiCoO）通过一种简便的固态退火方法直接由钴基金属有机框架（MOFs，ZIF-67）和锂盐制备而成。还研究了温度对LiCoO微观结构的影响。所制备的LiCoO呈现出均匀的多孔结构。作为锂离子电池（LIB）的阴极，LiCoO具有出色的稳定性和优异的倍率性能。所制备的多孔LiCoO在2C时的可逆容量为106.5 mA h g，即使在100次循环后仍具有96.4%的稳定容量保持率。这项工作可能为制备具有更广泛应用的多孔材料提供一条替代途径。
