Design of nanoarchitecture for synergistic interactions to realize nanoflower-like Ni3S4 supported on graphene sheets as high-performance supercapacitor electrodes

IF 2.5 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Porous Materials Pub Date : 2023-07-13 DOI:10.1007/s10934-023-01501-8

Wenrui Wu, Xin Wang, Yue Yan, Hao Zhang, Tao Xu, Xianfu Li

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Abstract

The objective of this work was to prepare and evaluate Ni₃S₄/graphene nanostructures for making high-performance supercapacitor electrodes. A one-pot solvothermal method was developed to prepare the hierarchical nanostructures consisting of Ni₃S₄ nanoflowers on graphene nanosheets. Due to the hierarchical structure of Ni₃S₄ nanoflowers on graphene nanosheets, the resulting electrodes exhibited high supercapacitive performance. Herein, the Ni₃S₄/graphene electrode demonstrated the specific capacitance of 978.4 F g^–1 at the current density of 0.5 A g^–1, the rate capability and long-term cycling stability were also excellent. Moreover, the capacitance contribution of NG-60 can reach 87.9% of the total capacity at 10 mV s⁻¹. The high pseudo-capacitive performance can be attributed to the superior electronic conductivity of graphene nanosheets and the well interconnected tiny pores/channels in the Ni₃S₄ nanoflower arrays. The prepared Ni₃S₄/graphene hierarchical nanostructures may be promising as innovative electrode materials for making high-performance supercapacitors.

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协同相互作用的纳米结构设计，以实现石墨烯片上负载的纳米花状Ni3S4作为高性能超级电容器电极

本研究旨在制备和评估用于制造高性能超级电容器电极的 Ni3S4/ 石墨烯纳米结构。该研究采用一锅溶热法制备了由石墨烯纳米片上的 Ni3S4 纳米花组成的分层纳米结构。由于石墨烯纳米片上的 Ni3S4 纳米流具有分层结构，因此所制备的电极具有很高的超级电容性能。其中，Ni3S4/石墨烯电极在电流密度为 0.5 A g-1 时的比电容为 978.4 F g-1，速率能力和长期循环稳定性也非常出色。此外，在 10 mV s-1 时，NG-60 的电容贡献率可达总电容的 87.9%。高伪电容性能可归因于石墨烯纳米片卓越的电子导电性以及 Ni3S4 纳米花阵列中相互连接的微小孔隙/通道。制备的 Ni3S4/石墨烯分层纳米结构有望成为制造高性能超级电容器的创新电极材料。

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来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.