Facile preparation of NixCo1-x(OH)2/N-doped porous carbon nanocomposites with superior electrochemical performances for hybrid supercapacitors

Facile preparation of Ni_xCo_1-_x(OH)₂/N-doped porous carbon nanocomposites with superior electrochemical performances for hybrid supercapacitors

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Yulai Zhao^a^,^b, Yuxuan Chen^a, Haoran Chen^a, Longqiang Xiao^a^,^b, Xuehui Ge^a^,^*, Xiangyu Yin^a, Linxi Hou^a^,^b^,^**

Progress in Natural Science: Materials International | 2026, 36(1) : 52 - 64

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Progress in Natural Science: Materials International | 2026, 36(1): 52-64

• Research Article •

Facile preparation of Ni_xCo_1-_x(OH)₂/N-doped porous carbon nanocomposites with superior electrochemical performances for hybrid supercapacitors

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Yulai Zhao^a^,^b, Yuxuan Chen^a, Haoran Chen^a, Longqiang Xiao^a^,^b, Xuehui Ge^a^,^*, Xiangyu Yin^a, Linxi Hou^a^,^b^,^**

Affiliations

^aDepartment of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China

^bQingyuan Innovation Laboratory, Quanzhou, 362801, China

Published: 2026-02-22 doi: 10.1016/j.pnsc.2025.06.003

Outline

Abstract

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The urgent need for high-performance energy storage devices has been driving the quest for superior battery-type electrode materials for hybrid supercapacitors (HSCs), however the relevant synthesis methods are usually tedious and poorly affordable. In this paper, a two-step route was elaborated to prepare Ni, Co hydroxide/N-doped porous carbon (Ni_xCo_1-_x(OH)₂/NPC) nanocomposites for hybrid supercapacitors. NPC with unique three-dimensional interconnected porous structure was obtained by HIPE high internal phase emulsion (HIPE) polymerization with subsequent pyrolysis. The NPC can act not only as a conductive network providing abundant accessible area and convenient charge transfer routes, but also as an anchoring platform for Ni_xCo_1-_x(OH)₂ growth via chemical bath deposition (CBD) without agglomeration. By tuning Ni²⁺/Co²⁺ ratio, the optimized Ni_xCo_1-_x(OH)₂/NPC nanocomposite exhibited excellent electrochemical performance with a capacity of 1392 F g^-1 at 1 A g^-1 in 6 M KOH solution. Furthermore, coupling with an activated NPC anode, the assembled hybrid supercapacitor possessed an appreciable energy density of 118.9 Wh kg^-1 at 400.0 W kg^-1 and a capacitance retention ratio of 80.7 % after 5000 charge-discharge cycles, showing considerable application prospects. This work provides new inspirations for the reasonable design and optimization of new electrode materials for first-rate hybrid supercapacitors.

Key words

Ni/Co hydroxide / High internal phase emulsion templating / N-doped porous carbon / Hybrid supercapacitor / Nanocomposites

Cite this Article

Yulai Zhao, Yuxuan Chen, Haoran Chen, Longqiang Xiao, Xuehui Ge, Xiangyu Yin, Linxi Hou. Facile preparation of Ni_xCo_1-_x(OH)₂/N-doped porous carbon nanocomposites with superior electrochemical performances for hybrid supercapacitors[J]. Progress in Natural Science: Materials International, 2026 , 36 (1) : 52 -64 . DOI: 10.1016/j.pnsc.2025.06.003

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Funding

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Natural Science Foundation of Fujian province(2022J01569)
National Natural Science Foundation of China(U21A20313)
Major Program of Qingyuan Innovation Laboratory(00122004)
Key Program of Qingyuan Innovation Laboratory(00221003)

Appendix

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Year 2026 volume 36 Issue 1

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Cite this Article

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Article Info

doi: 10.1016/j.pnsc.2025.06.003

Receive Date：2025-03-19
Online Date：2026-06-03
Published：2026-02-22

Article Data

Affiliations

History

Received：2025-03-19
Revised：2025-06-04
Accepted：2025-06-05

Funding

Natural Science Foundation of Fujian province(2022J01569)

National Natural Science Foundation of China(U21A20313)

Major Program of Qingyuan Innovation Laboratory(00122004)

Key Program of Qingyuan Innovation Laboratory(00221003)

Affiliations

^aDepartment of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China

^bQingyuan Innovation Laboratory, Quanzhou, 362801, China

Corresponding:

^* E-mail addresses: gexuehui@fzu.edu.cn (X. Ge)

^** Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China. E-mail addresses: lxhou@fzu.edu.cn (L. Hou).

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表12种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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