Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 20, Pages 14154-14165Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.04.197
Keywords
Hierarchical ZnMn2O4 micro-belts; Template-engaged strategy; Porous micro-/nano-structures; Anode; Lithium-ion batteries
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Funding
- National Natural Science Foundation of China [51572005, 51502003]
- Anhui Province Funds for Distinguished Young Scientists [1508085J09]
- Natural Science Foundation of Anhui Province [1508085ME106]
- Foundation for Young Talents in College of Anhui Province
- Graduation Innovation Research Foundation of Anhui University of Technology [2015076, 2015088]
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A sustainable yet massive synthesis of porous micro-/nano-structured spinel mixed metal oxides is highly desirable as advanced anodes for their extensive applications in rechargeable lithium-ion batteries (LIBs). In this contribution, a self-sacrifice biomorphic template-engaged strategy was purposefully devised for efficient and scalable fabrication of hierarchical porous ZnMn2O4 micro-belts (ZMO-MB). The synthetic procedure mainly involves impregnating natural cotton fibers with Mn2+/Zn2+ ions, followed by sacrificing template over calcination in air. The underlying formation process of the ZMO-MB was rationally put forward with comparative analysis. Physicochemical investigations showed that the well-defined ZMO-MB with hierarchical meso-/macro-porosity was composed of assembled nanoparticle subunits. Taking advantages of intrinsic structural and functional merits, the resultant ZMO-MB with a mass loading of-1.2 mg exhibits appealing Li-storage properties with large reversible capacity (similar to 436 mAh g(-1) at 2000 mA g(-1)), high initial Coulombic efficiency (similar to 71.2%) and appealing long-duration cyclability at high rates (similar to 731 mAh g(-1) after 150 cycles at 500 mA g(-1)) when evaluated as a promising anode platform for high-performance LIBs. More encouragingly, we strongly envision that the smart electrode design concept here can be easily for large-scale production and engineering of promising ZMO for next-generation LIBs. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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