Synthesis of NiMn-LDH Nanosheet@Ni3S2 Nanorod Hybrid Structures for Supercapacitor Electrode Materials with Ultrahigh Specific Capacitance

Shuai Yu; Yingxi Zhang; Gaobo Lou; Yatao Wu; Xinqiang Zhu; Hao Chen; Zhehong Shen; Shenyuan Fu; Binfu Bao; Limin Wu

doi:10.1038/s41598-018-23642-6

Synthesis of NiMn-LDH Nanosheet@Ni₃S₂ Nanorod Hybrid Structures for Supercapacitor Electrode Materials with Ultrahigh Specific Capacitance

Sci Rep. 2018 Mar 27;8(1):5246. doi: 10.1038/s41598-018-23642-6.

Authors

Shuai Yu¹, Yingxi Zhang^{1

2}, Gaobo Lou¹, Yatao Wu¹, Xinqiang Zhu¹, Hao Chen³, Zhehong Shen⁴, Shenyuan Fu¹, Binfu Bao¹, Limin Wu^{5

6}

Affiliations

¹ Faculty of Engineering and Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, PR China.
² Collaborative Innovation Center of Novel Organic Chemical Materials of Hubei Province, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China.
³ Faculty of Engineering and Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, PR China. haochen10@fudan.edu.cn.
⁴ Faculty of Engineering and Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, PR China. zhehong.shen@vip.163.com.
⁵ Department of Materials Science, Fudan University, Shanghai, 200433, PR China. lmw@fudan.edu.cn.
⁶ Collaborative Innovation Center of Novel Organic Chemical Materials of Hubei Province, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China. lmw@fudan.edu.cn.

Abstract

One of the key challenges for pseudocapacitive electrode materials with highly effective capacitance output and future practical applications is how to rationally construct hierarchical and ordered hybrid nanoarchitecture through the simple process. Herein, we design and synthesize a novel NiMn-layered double hydroxide nanosheet@Ni₃S₂ nanorod hybrid array supported on porous nickel foam via a one-pot hydrothermal method. Benefited from the ultrathin and rough nature, the well-defined porous structure of the hybrid array, as well as the synergetic effect between NiMn-layered double hydroxide nanosheets and Ni₃S₂ nanorods, the as-fabricated hybrid array-based electrode exhibits an ultrahigh specific capacitance of 2703 F g^-1 at 3 A g^-1. Moreover, the asymmetric supercapacitor with this hybrid array as a positive electrode and wood-derived activated carbon as a negative electrode demonstrates high energy density (57 Wh Kg^-1 at 738 W Kg^-1) and very good electrochemical cycling stability.