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首页> 外文期刊>International Journal of Electrochemical Science >Preparation of Nickel-Cobalt Layered Double Hydroxides for the Battery-like Electrodes in Rotor–Stator Reactor
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Preparation of Nickel-Cobalt Layered Double Hydroxides for the Battery-like Electrodes in Rotor–Stator Reactor

机译：转子定子反应器中电池状电极的镍钴层双氢氧化物的制备

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摘要

Nickel-cobalt layered double hydroxides (NiCo LDHs) with different Ni/Co ratios were prepared using rotor-stator reactor technology. The morphology, crystal structure, pore size distribution and electrochemical properties were characterized and the band structure was calculated with LDA+U method in CASTEP code based on density functional theory. The results show that the band gap value of Ni5Co3O16H16 decreases compared to that of Ni8O16H16. The pore size increases and the pore size distribution widens with the increasing cobalt content in the NiCo LDHs. The NiCo LDH with a Ni/Co ratio of 2:1 has a surface area of 139.9 m2 g-1 and a specific capacity of 176.7 mA h g-1 at a current density of 1 A g-1 in 6 M KOH. The electrode also exhibits good cycling stability and the capacity retention still remains 98 % after 1000 cycles.
机译：使用转子定子反应器技术制备具有不同Ni / CO比的镍钴层双氢氧化物（Nico LDH）。表征形态，晶体结构，孔径分布和电化学性能，基于密度泛函理论，Castep码中的LDA + U方法计算带结构。结果表明，与Ni8O16H16相比，Ni5CO3O16H16的带隙值降低。孔径增加，孔径分布随着Nico LDH中的增加而导致增加的钴含量。 Nico LDH具有Ni / Co比为2：1的表面积为139.9m 2 G-1和176.7mA H G-1的特定容量，在6M KOH中的电流密度为1Ag-1。电极还表现出良好的循环稳定性，并且在1000次循环后容量保持仍然保持98％。

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