Fabrication of core-shell, yolk-shell and hollow Fe3O4@ carbon microboxes for high-performance lithium-ion batteries
MetadataShow full item record
Metal oxide–carbon composites with core–shell, yolk–shell and hollow structures have attracted enormous interest because of their applications in lithium-ion batteries. However, the relationship between structure and battery performance is still unclear. Herein, we report the designed synthesis of unique core–shell, yolk–shell and hollow Fe3O4@carbon microboxes through a one-step Stöber coating method, followed by a carbonization process. Different calcination temperatures were investigated to manipulate the various structures, and the impact of layer thickness on the battery performance was also assessed. Our results showed that the core–shell structured Fe3O4@carbon microboxes with nitrogen-doped carbon shells having a thickness of 15 nm exhibited an excellent performance in lithium-ion batteries with a high reversible capacity of 857 mA h g−1 that could be retained after 100 cycles at a current density of 0.1 A g−1.
Showing items related by title, author, creator and subject.
Graphene oxide/core-shell structured metal-organic framework nano-sandwiches and their derived cobalt/N-doped carbon nanosheets for oxygen reduction reactionsWei, J.; Hu, Y.; Liang, Y.; Kong, B.; Zheng, Z.; Zhang, J.; Jiang, San Ping; Zhao, Y.; Wang, H. (2017)A metal-organic framework (MOF) seed-mediated deposition route is developed to synthesize MOF/graphene oxide (GO)/MOF nano-sandwiches with core-shell structured MOF (i.e. ZIF-8@ZIF-67) crystals uniformly distributed on ...
Carbon-coated three-dimensional WS<inf>2</inf>film consisting of WO<inf>3</inf>@WS<inf>2</inf>core-shell blocks and layered WS<inf>2</inf>nanostructures as counter electrodes for efficient dye-sensitized solar cellsShen, Z.; Wang, M.; Liu, Lihong; Sofianos, M.; Yang, H.; Wang, Shaobin; Liu, Shaomin (2018)© 2018 Elsevier Ltd The possibility of using solar energy for electricity generation has inspired intensive enthusiasm on the development of solar cell devices. This work reports the synthesis of a novel counter electrode ...
Failure modes of hollow core–shell structural active materials during the lithiation–delithiation processMa, Z.; Xie, Z.; Wang, Y.; Zhang, P.; Pan, Y.; Zhou, Y.; Lu, Chunsheng (2015)Although they may improve the electrochemical performance of lithium-ion batteries, core–shell structural anode materials with high-capacity suffer from large volume expansion and dissolution during lithium-ion ...