Novel Co(OH)2 with cotton-like structure as anode material for alkaline secondary batteries
作者： W Zhao , YL Liao , SJ Qiu , HL Chu , YJ Zou
DOI: 10.1088/1757-899X/292/1/012037
关键词: Anode 、 Scanning electron microscope 、 Sodium borohydride 、 Materials science 、 Colloid 、 Morphology (linguistics) 、 Crystal structure 、 Energy dispersive spectrometry 、 Electrochemistry 、 Nuclear chemistry
摘要: The cotton-like Co(OH)2 (S-Co(OH)2) was successfully synthesized and its electrochemical performance systematically investigated. S-Co(OH)2 prepared through the "destruction" of newly formed colloid by reduction using sodium borohydride. crystal structure surface morphology were characterized X-ray diffraction (XRD), scanning electron microscopy (SEM) energy dispersive spectrometry (EDS). Used as an anode material for alkaline secondary batteries, sample exhibited better cycle stability, higher capacity, rate than those conventional β-Co(OH)2. At a discharge current density 100 mA/g, initial capacity is 549.3 mAh/g still sustained to be 329.2 after charge-discharge cycles with retention 59.9%.
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