Yan Ai-Lan, Wang Xin-Chang, Cheng Ji-Peng
Institute of Hydraulic and Environmental Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.
Key Laboratory of Material Physics, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China.
Nanomaterials (Basel). 2018 Sep 20;8(10):747. doi: 10.3390/nano8100747.
The research on supercapacitors has been attractive due to their large power density, fast charge/discharge speed and long lifespan. The electrode materials for supercapacitors are thus intensively investigated to improve the electrochemical performances. Various transition metal layered double hydroxides (LDHs) with a hydrotalcite-like structure have been developed to be promising electrode materials. Earth-abundant metal hydroxides are very suitable electrode materials due to the low cost and high specific capacity. This is a review paper on NiMn LDHs for supercapacitor application. We focus particularly on the recent published papers using NiMn LDHs as electrode materials for supercapacitors. The preparation methods for NiMn LDHs are introduced first. Then, the structural design and chemical modification of NiMn LDH materials, as well as the composites and films derived from NiMn LDHs are discussed. These approaches are proven to be effective to enhance the performance of supercapacitor. Finally, the reports related to NiMn LDH-based asymmetric supercapacitors are summarized. A brief discussion of the future development of NiMn LDHs is also provided.
由于超级电容器具有高功率密度、快速充放电速度和长寿命，对其的研究一直备受关注。因此，人们对超级电容器的电极材料进行了深入研究，以提高其电化学性能。各种具有类水滑石结构的过渡金属层状双氢氧化物（LDHs）已被开发成为有前景的电极材料。储量丰富的金属氢氧化物因其低成本和高比容量而成为非常合适的电极材料。这是一篇关于用于超级电容器的镍锰层状双氢氧化物的综述文章。我们特别关注最近发表的将镍锰层状双氢氧化物用作超级电容器电极材料的论文。首先介绍了镍锰层状双氢氧化物的制备方法。然后，讨论了镍锰层状双氢氧化物材料的结构设计和化学改性，以及由镍锰层状双氢氧化物衍生的复合材料和薄膜。这些方法已被证明对提高超级电容器的性能有效。最后，总结了与镍锰层状双氢氧化物基不对称超级电容器相关的报道。还对镍锰层状双氢氧化物的未来发展进行了简要讨论。
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