Ni-Co-Based Nanowire Arrays with Hierarchical Core-Shell Structure Electrodes for High-Performance Supercapacitors

Fan, Yanchen1,3,4; Liu, Shitai3; Han, Xiao2; Xiang, Rong1; Gong, Yongji3; Wang, Tianshuai3; Jing, Yu3; Maruyama, Shigeo1; Zhang, Qianfan3; Zhao, Yan3

2020-08-24

10.1021/acsaem.0c01004

ACS Applied Energy Materials   影响因子和分区

2574-0962

Pseudocapacitors and redox capacitors have become the most promising candidates for high-energy and high-power energy storage applications due to their excellent quick charge/discharge capacity and cyclic stability. Because the controllable construction of hierarchical structures would promote the single contribution of pure materials, and the formation of an interface between structures can enhance the electrochemical performance of supercapacitors, a high-performance nickel foam@NiCo2O4@Ni(OH)(2) supercapacitor electrode has been fabricated via a facile hydrothermal route in this work. Besides, density functional theory calculations were performed to explore the distinct diffusion and binding capabilities between the cobalt and nickel species. The as-prepared NiCo2O4@Ni(OH)(2) electrode possesses unexceptionable electrochemical pseudocapacitive performance including a remarkable specific capacitance (3.5 F cm(-2) at a current density of 1 mA cm(-2) or 2356 F g(-1) at a current density of 0.67 A g(-1)), high rate performance (64.0% retention at a current density of 20 mA cm(-2)), and high cycling stability (94.1% retention after 5000 cycles). This study developed a method for designing a high-performance nickel foam@NiCo2O4@Ni(OH)(2) supercapacitor electrode, which has certain guiding significance for the research of electrochemical energy storage and conversion.

core-shell nickel foam Co3O4-based supercapacitor density functional theory specific capacitance and performance

SCI ; EI

英语

其他

Natural Science Basic Research Program of Shaanxi[2020JQ-163] ; Fundamental Rese arch Funds for the Central Universities[3102019QD0418] ; JSPS KAKENHI[JP15H05760][JP18H05329][JP19H02543][JP20H00220] ; National Key Research and Development Program of China[2017YFB0702100] ; National Natural Science Foundation of China[11404017][51872132]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000563784400038

AMER CHEMICAL SOC

20203809209317

Density functional theory ; Nickel ; Capacitance ; Shells (structures) ; Electrochemical electrodes ; Energy storage ; Current density

Structural Members and Shapes:408.2 ; Energy Storage:525.7 ; Nickel:548.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electric Components:704.1 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
2.Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China
3.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
4.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

Fan, Yanchen,Liu, Shitai,Han, Xiao,et al. Ni-Co-Based Nanowire Arrays with Hierarchical Core-Shell Structure Electrodes for High-Performance Supercapacitors[J]. ACS Applied Energy Materials,2020,3(8):7580-7587.

Fan, Yanchen.,Liu, Shitai.,Han, Xiao.,Xiang, Rong.,Gong, Yongji.,...&Zhao, Yan.(2020).Ni-Co-Based Nanowire Arrays with Hierarchical Core-Shell Structure Electrodes for High-Performance Supercapacitors.ACS Applied Energy Materials,3(8),7580-7587.

Fan, Yanchen,et al."Ni-Co-Based Nanowire Arrays with Hierarchical Core-Shell Structure Electrodes for High-Performance Supercapacitors".ACS Applied Energy Materials 3.8(2020):7580-7587.