Co3O4 nanocage derived from metal-organic frameworks: An excellent cathode catalyst for rechargeable Li-O2 battery
公司 <sub>3</sub > O <sub>4</sub> nanocage 源于金属器官的框架: 为可充电的 Li-O <sub>2</sub> 的优秀阴极催化剂电池作者机构:State Key Laboratory of Heavy Oil ProcessingBeijing Key Laboratory of biogas upgrading utilizationCollege of New Energy and MaterialsChina University of Petroleum-BeijingBeijing 102249China State Key Lab of PCOSSXiamen UniversityXiamen 361005China Eduard-Zintl-Institut fur Anorganische und Physikalische ChemieTechnische UniversitatDarmstadtAlarich-Weiss-Strasse 8D-64287 DarmstadtGermany
出 版 物:《Nano Research》 (纳米研究(英文版))
年 卷 期:2019年第12卷第7期
页 面:1555-1562页
核心收录:
基 金:the National Key R&D Program of China (No.2016YFB0100200) Science Foundation of China University of Petroleum,Beijing (C201604,No.2462014YJRC003) State key laboratory of physical chemistry of solid surfaces,Xiamen University (No.201703)
主 题:U-O2 batteries metal-organic framework (MOF)-derived Co3O4 nanocage Co3O4 polyhedron Co3O4 particle
摘 要:Rechargeable non-aqueous Li-O2 battery is regarded as one of the most promising energy-storage technologies on account of its high energy *** is believed that the rational design of three-dimensional (3D) architecture for catalyst is a key factor for the remarkable ***-organic frameworks (MOFs) derived materials possess excellent architecture,which is beneficial for Li-O2 *** this work,ZIF-67 is used as precursor template and calcinated under different temperature to produce Co3O4 *** the anneal treatment is under 350℃,the derived Co3O4 nanocage holds the most complete skeleton,which provides better charge transfer ability as well as O2 and Li^+ ***,the Co3O4 nanocage owns more oxygen vacancies,offering more active *** the synergistic effect of nanocage structure and active sites,the Co3O4 nanocage stably delivers a large specific capacity of 15,500 mAh·g^-1 as well as a long cycle-life of 132 cycles at limited discharge capacity of 1,000 mAh·g^-1 under discharge/charge current density of 0.5 A·g^-1.