|本期目录/Table of Contents|

[1]雷娜,马翩翩.Ni-Co LDHs纳米片阵列用于超级电容器电极的研究[J].浙江理工大学学报,2020,43-44(自科六):790-796.
 LEI Na,MA Pianpian.Research on application of Ni-Co LDHsnanosheet arrays in supercapacitor electrode[J].Journal of Zhejiang Sci-Tech University,2020,43-44(自科六):790-796.
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Ni-Co LDHs纳米片阵列用于超级电容器电极的研究()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第43-44卷
期数:
2020年自科六期
页码:
790-796
栏目:
出版日期:
2020-11-27

文章信息/Info

Title:
Research on application of Ni-Co LDHsnanosheet arrays in supercapacitor electrode
文章编号:
1673-3851 (2020) 11-0790-07
作者:
雷娜 马翩翩
浙江理工大学材料科学与工程学院,杭州 310018
Author(s):
LEI Na MA Pianpian
School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
镍钴氢氧化物纳米片阵列超级电容器电化学性能电极
分类号:
TM53
文献标志码:
A
摘要:
碳基和金属层状双氢氧化物(LDHs)材料的集成是一种制备具有良好电化学性能的超级电容器电极的有效方法。采用水热法将镍钴氢氧化物(NiCo LDHs)纳米片直接生长在碳布上作为超级电容器的电极材料,利用X射线衍射仪和扫描电子显微镜对样品的相组成、晶体结构以及表面形貌进行表征,并通过电化学工作站进行电化学性能表征。结果表明:通过水热法得到的NiCo LDHs纯相为三方层状结构,空间群是R3 m,并呈现出纳米片状阵列形貌。其特殊的层状结构及阵列形貌对材料的电化学性能产生了一定的影响。在三电极体系下,NiCo LDHs在3 M KOH电解质中时,1 A/g的电流密度下比电容高达7320 F/g;当与活性炭(AC)电极组成非对称超级电容器NiCo LDHs//AC时,在1 A/g的电流密度下其比电容为1087 F/g;功率密度为7750 W/kg时的能量密度高达362 Wh/kg,且经5000次循环后其容量保持率在40%。同时,由RandlesSevick公式计算可知NiCo LDHs材料拥有与锂离子相当的扩散系数118×10-10 cm2/S,并进一步通过定量动力学分析表明NiCo LDHs属于电池类材料,且其氧化还原过程是典型的由扩散控制的电荷存储类型。这些良好的性能都显示了NiCo LDHs作为超级电容器电极材料具有较好的储能应用潜力。

参考文献/References:

[1] Chen H, Hu L, Chen M, et al. NickelCobalt layered double hydroxide nanosheets for highperformance supercapacitor electrode materials[J]. Advanced Functional Materials, 2014, 24(7): 934-942.
[2] Yan J, Li S, Lan B, et al. Rational design of nanostructured electrode materials toward multifunctional supercapacitors[J]. Advanced Functional Materials, 2020, 30(2): 1902564-1902599.
[3] Shang J, Huang Q, Wang L, et al. Soft hybrid scaffold (SHS) strategy for realization of ultrahigh energy density of wearable aqueous supercapacitors[J]. Advanced Materials, 2020, 32(4): 1907088-1907097.
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[7] Djire A, Pande P, Deb A, et al. Unveiling the pseudocapacitive charge storage mechanisms of nanostructured vanadium nitrides using insitu analyses[J]. Nano Energy, 2019, 60: 72-81.
[8] Li X, Wu H, Guan C, et al. (Ni,Co)Se2/NiCoLDH core/shell structural electrode with the cactusLike (Ni,Co)Se2 Core for asymmetric supercapacitors[J]. Small, 2018, 15(3): 1803895-1803905.
[9] Li M, Yuan P W, Guo S H, et al. Design and synthesis of NiCo and NiMn layered double hydroxides hollow microspheres for supercapacitor[J]. International Journal of Hydrogen Energy, 2017, 42(48):28797-28806.
[10] 安露露, 米杰. 镍钴氢氧化物的制备及其电化学性能[J]. 应用化学, 2020, 37(5): 579-586.

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备注/Memo

备注/Memo:
收稿日期:2020-07-10
网络出版日期:2020-09-04
基金项目:浙江省自然科学基金项目(LGG19E020005)
作者简介: 雷娜(1996-),女,陕西咸阳人,硕士研究生,主要从事超级电容器电极材料方面的研究
通信作者:马翩翩,E-mail:pianpianma@zstu.edu.cn
更新日期/Last Update: 2020-11-05