title: Metal-Organic Framework Derived Porous Hollow Co3O4/N-C Polyhedron Composite with Excellent Energy Storage Capability.
abstract: Metal-organic frameworks (MOFs) derived transition metal oxides exhibit enhanced performance in energy conversion and storage. In this work, porous hollow Co3O4with N-doped carbon coating (Co3O4/N-C) polyhedrons have been prepared using cobalt-based MOFs as a sacrificial template. Assembled from tiny nanoparticles and N-doped carbon coating, Co3O4/N-C composite shortens the diffusion length of Li+/Na+ions and possesses an enhanced conductivity. And the porous and hollow structure is also beneficial for tolerating volume changes in the galvanostatic discharge/charge cycles as lithium/sodium battery anode materials. As a result, it can exhibit impressive cycling and rating performance. At 1000 mA g-1, the specific capacities maintaine stable values of ∼620 mAh g-1within 2000 cycles as anodes in lithium ion battery, while the specific capacity keeps at 229 mAh g-1within 150 cycles as sodium ion battery anode. Our work shows comparable cycling performance in lithium ion battery but even better high-rate cycling stability as sodium ion battery anode. Herein, we provide a facile method to construct high electrochemical performance oxide/N-C composite electrode using new MOFs as sacrificial template.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Wenpei
authors.identifier: http://orcid.org/0000-0001-6550-9287
authors.initials: W
authors.lastname: Kang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Fan
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Fangna
authors.initials: F
authors.lastname: Dai
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Rongming
authors.initials: R
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum (East China) , Qingdao, Shandong 266580, China.
authors.forename: Daofeng
authors.identifier: http://orcid.org/0000-0003-3184-1841
authors.initials: D
authors.lastname: Sun
keywords: Co3O4/N−C; lithium-ion battery; long-term cycling performance; metal−organic frameworks; sodium-ion battery