ZnS@Co(OH)2 nanostructured materials with high-performance energy storage and superior electrocatalytic activity

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.536

Hong-Sheng Chu , Dong-Mei Ma , Fufa Wu , Rong-Da Zhao , Jun Xiang , Li-fen Li , Xingming Zhao , Tianlin Wang

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Abstract

This paper reports the synthesis of Co(OH)₂ nanowires on a ZnS substrate with a multi-layer structure using a multi-step hydrothermal method. Co(OH)₂ nanowires can increase the charge transfer rate and provide more electron storage space and reactive sites with the substrate of ZnS nanosheets. The results showed that at a current density of 1 A/g, the GCD charge-discharge curve of the ZnS@Co(OH)₂ electrode reached 2305 s, with a specific capacitance of 1063 F/g. The supercapacitor assembled demonstrated an energy density of 52.92 Wh/kg at a power density of 980 W/kg, maintaining 83.3 % of its capacity after 6000 charge-discharge cycles. At an overpotential of 219.2 mV, the HER current density reached 50 mA/cm². Additionally, the ZnS@Co(OH)₂ electrode remained stable after 12 h of hydrogen evolution reaction, showing promise as a material for both energy storage and electrocatalytic hydrogen production systems.

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ZnS@Co(OH)2纳米结构材料，具有高性能储能和优异的电催化活性

采用多步骤水热法在多层结构的ZnS衬底上合成了Co(OH)2纳米线。Co(OH)2纳米线在ZnS纳米片衬底上可以提高电荷转移速率，提供更多的电子存储空间和活性位点。结果表明：在电流密度为1 a /g时，ZnS@Co(OH)2电极的GCD充放电曲线达到2305 s，比电容为1063 F/g；在功率密度为980 W/kg时，超级电容器的能量密度为52.92 Wh/kg，在6000次充放电循环后保持83.3%的容量。在过电位219.2 mV时，HER电流密度达到50 mA/cm2。此外，ZnS@Co(OH)2电极在12小时的析氢反应后仍保持稳定，显示出作为储能和电催化制氢系统材料的前景。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.