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NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial‑like Strategy as High‑Rate Battery‑Type Electrode Material

Hao Mei Dao Feng Sun Zhaodi Huang Ben Xu Zhenyu Xiao Yingjie Mei Haobing Zhang Shiyu Zhang Dacheng Li Wenpei Kang

纳微快报（英文）2020，Vol.12Issue(5)：49-63,15.

NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial‑like Strategy as High‑Rate Battery‑Type Electrode Material

Hao Mei ¹Dao Feng Sun ²Zhaodi Huang ³Ben Xu ¹Zhenyu Xiao ²Yingjie Mei ³Haobing Zhang ⁴Shiyu Zhang ⁵Dacheng Li ³Wenpei Kang¹

作者信息

1. College of Science, China University of Petroleum (East China), Qingdao 266580, Shandong, People's Republic of China
2. College of Science, China University of Petroleum (East China), Qingdao 266580, Shandong, People's Republic of China
3. School of Material Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, People's Republic of China
4. Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
5. Key Laboratory of Eco?chemical Engineering, Ministry of Education Laboratory of Inorganic Synthesis and Applied Chemistry, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266402, Shandong, People's Republic of China
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摘要

Abstract

Constructing heterojunction is a promising way to improve the charge transfer effciency and can thus promote the electrochemical properties. Herein, a facile and effective epitaxial-like growth strategy is applied to -NiSe2 nano-octahe?dra to fabricate the -NiSe2-(100)/Ni(OH)2-(110) heterojunction. The heterojunction composite and Ni(OH)2 (performing high electrochemical activity) is ideal high-rate battery-type supercapacitor electrode. The -NiSe2/Ni(OH)2 electrode exhibits a high specific capacity of 909 C g?1 at 1 A g?1 and 597 C g?1 at 20 A g?1. The assembled asymmetric supercapacitor composed of the -NiSe2/Ni(OH)2 cathode and p-phenylen?ediamine-functional reduced graphene oxide anode achieves an ultrahigh specific capacity of 303 C g?1 at 1 A g?1 and a superior energy density of 76.1 Wh kg?1 at 906 W kg?1, as well as an outstanding cycling stability of 82% retention for 8000 cycles at 10 A g?1. To the best of our knowledge, this is the first example of -NiSe2/Ni(OH)2 heterojunction exhibiting such remarkable supercapacitor performance. This work not only provides a promising candidate for next-generation energy storage device but also offers a possible universal strategy to fabricate metal selenides/metal hydroxides heterojunctions.

关键词

Supercapacitor/Heterojunction/Epitaxial-like growth/NiSe2/Ni(OH)2

Key words

Supercapacitor/Heterojunction/Epitaxial-like growth/NiSe2/Ni(OH)2

引用本文复制引用

Hao Mei,Dao Feng Sun,Zhaodi Huang,Ben Xu,Zhenyu Xiao,Yingjie Mei,Haobing Zhang,Shiyu Zhang,Dacheng Li,Wenpei Kang..NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial‑like Strategy as High‑Rate Battery‑Type Electrode Material[J].纳微快报（英文）,2020,12(5):49-63,15.

基金项目

This work was supported by the NSFC (Grant Nos. 21875285 and 21805155), Taishan Scholars Program (ts201511019), Key Research and Development Projects of Shan?dong Province (2019JZZY010331), and the Fundamental Research Funds for the Central Universities (19CX05001A). （Grant Nos. 21875285 and 21805155）

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ISSN：2311-6706

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