Facile synthesis of Ni3Se4/Ni0.6Zn0.4O/ZnO nanoparticle as high-performance electrode materials for electrochemical energy storage device

Li Runfa; Xin Chen; Cao Hongliang; Yan Wei; Zhang Yuanfang; Cheng Siyu; Jiang Wenrui; Zhang Qi; E Yi; Jiang Meng; Muhammad Abdullah; Liyi Tan

doi:10.1088/1361-6528/acb4f1

Facile synthesis of Ni₃Se₄/Ni_0.6Zn_0.4O/ZnO nanoparticle as high-performance electrode materials for electrochemical energy storage device

Nanotechnology. 2023 Feb 20;34(18). doi: 10.1088/1361-6528/acb4f1.

Authors

Li Runfa¹, Xin Chen¹, Cao Hongliang¹, Yan Wei¹, Zhang Yuanfang¹, Cheng Siyu¹, Jiang Wenrui¹, Zhang Qi¹, E Yi¹, Jiang Meng¹, Muhammad Abdullah¹, Liyi Tan¹

Affiliation

¹ Key Laboratory for Ultrafine Materials of Ministry of Education, and Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.

PMID: 36669193
DOI: 10.1088/1361-6528/acb4f1

Abstract

To enhance the performance of transition metal chalcogenide composite electrode material, a key point is a composite design and preparation based on the synergistic effect between the oxide and selenide materials. With a facile 'one step template-annealing' step, Ni₃Se₄, Ni_0.6Zn_0.4O and ZnO are simultaneously synthesized, by 500 °C annealing. With the increase of annealing temperature from 350 °C to 600 °C, nickel selenides change from NiSe₂to Ni₃Se₄to NiSe. The charge storage capacity increases first and then decreases with the increase of annealing temperature, and the 500 °C annealing obtained three compound composite Ni₃Se₄/Ni_0.6Zn_0.4O/ZnO (NNZ-500) nanoparticle material displayed a high specific capacitance of 1089.2 F g^-1at 1 A g^-1, and excellent cycle stability of 99.8% capacitance retention after 2000 cycles at 5 A g^-1. Moreover, an asymmetric supercapacitor was assembled with NNZ-500 as the positive electrode material and activated carbon as the negative electrode material. This kind of asymmetric supercapacitor demonstrated a high energy density of 53.4 Wh kg^-1at 819.0 W kg^-1, and cycle stability with 98.6% capacitance retention after 2000 cycles. This material preparation approach provides great potential for the future development of high performance transition metal composite electrode materials in energy storage applications.

Keywords: asymmetric supercapacitors; glycerate; transition metal selenides.