Ni(OH)(2)@MnO2锂离子电池材料

  • Last Update:August,23,2019 Created:August,23,2019
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Title of the dataset Ni(OH)(2)@MnO2锂离子电池材料
Provenance of the dataset www.mgedata.cn
How were the data collected/created? What was the cost? 王博
Data sharing policy Shareable for research purpose
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Variable labels of dataset (the names of the variables) 循环效率,循环后容量,循环次数,电流密度
Outline of data Caterpillar structured Ni(OH)(2)@MnO2 core/shell nanocomposite arrays on nickel foams (CS Ni(OH)2@MnO2 NFs) are synthesized by a facile hydrothermal method. The nanocomposites consist of Ni(OH)(2) nanosheets which are coated by a series of ultrathin MnO2 nanosheets as a secondary nanostructure. As an anode for lithium ion batteries (LIBs), the as-fabricated CS Ni(OH)(2)@MnO2 NFs show an improved electrochemical performance, which delivers a high specific capacity of 2223 mA h g(-1) in the initial discharge process and retains a reversible capacity of about 1210 mA h g(-1) after 80 cycles at 200 mA g(-1), corresponding to a capacity retention of 74.4% with comparison of the second cycle. CS Ni(OH)(2)@MnO2 NFs also show a remarkable rate capability of 650 mA h g(-1) after 100 cycles while cycling at 1000 mA g(-1). The improved electrochemical performance can be ascribed to a large surface area, more efficient electrolyte penetration, and multifunctionalities offered by the individual components of the caterpillar core/shell nanostructure. In addition, the self-supported nanocomposite arrays on NFs greatly simplify the fabrication processing of electrodes without applying a binder and conductive additive, which provide good electrical contact between the active materials and the substrate. Hence, CS Ni(OH)(2)@MnO2 NFs are promising anode candidates for lithium-ion batteries. 文献DOI:10.1039/c5ra21944b
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