Biomorphic template-engaged strategy towards porous zinc manganate micro-belts as a competitive anode for rechargeable lithium-ion batteries. (18th May 2017)

• Record Type: Journal Article
• Authors: Zhu, Siqi; Chen, Qiuli; Yang, Chao; Zhang, Yanru; Hou, Linrui; Pang, Gang; He, Xiangmei; Zhang, Xiaogang; Yuan, Changzhou
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 20(2017)
• Page Start: 14154
• Page End: 14165
• Publication Date: 2017-05-18
• Subjects: Hierarchical ZnMn2O4 micro-belts -- Template-engaged strategy -- Porous micro-/nano-structures -- Anode -- Lithium-ion batteries; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.04.197
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: 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 ZnMn2 O4 micro-belts (ZMO-MB). The synthetic procedure mainly involves impregnating natural cotton fibers with Mn 2+ /Zn 2+ 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 (∼436 mAh g −1 at 2000 mA g −1 ), high initial Coulombic efficiency (∼71.2%) and appealing long-duration cyclability at high rates (∼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. Highlights: Sustainable self-sacrifice biomorphic template synthesis of ZnMn2 O4 micro-belts. ZnMn2 O4 micro-belts were constructed by nanoparticle subunits. Inherent formation process of ZnMn2 O4 micro-belts was proposed. ZnMn2 O4 micro-belts possessed hierarchical meso-/macro-porosity. ZnMn2 O4 micro-belts exhibited superior Li-storage capacities at high rates.