碳纳米管介导的Ni3(PO4)2/NiCo2O4杂化材料用于非对称超级电容器的先进储能

IF 3.6 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Solid State Sciences Pub Date : 2025-02-01 Epub Date: 2025-01-15 DOI:10.1016/j.solidstatesciences.2025.107834

Lei Yuan, Zhenyu Zhu, Dongkun Fan, Jiarui Xun, Jie Liu, Ku Jiang, Liwei Zhang, Na Xin

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引用次数: 0

摘要

提出了一种简单的水热法制备非对称超级电容器用高接触面积Ni3(PO4)2/NiCo2O4@CNTs复合材料的方法。利用磷酸盐和双金属氧化物的优势及其复合后的协同效应，形成层次化结构，从而提高复合材料的整体电化学性能。该电极材料的电容为1563 F g−1 （1 A g−1）。以正极Ni3(PO4)2/NiCo2O4@CNTs和负极活性炭（AC）为负极的非对称超级电容器在1a1g−1下的电容为102.2 F−1。1万次充放电循环后，容量保持率为83.6%。当功率密度为800w kg−1时，其比能高达36.3 Wh kg−1。证明了该方法制备的复合材料作为电容器电极材料具有潜在的应用前景。

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Carbon nanotube-mediated Ni3(PO4)2/NiCo2O4 hybrids for advanced energy storage in asymmetric supercapacitors

A simple hydrothermal method was proposed to synthesize a high contact area Ni₃(PO₄)₂/NiCo₂O₄@CNTs composite material for asymmetric supercapacitors. By utilizing the advantages of both phosphates and bimetallic oxides and their synergistic effect after compounding, a hierarchical structure is formed, thereby improving the overall electrochemical performance of the composite material. The capacitance of this electrode material is 1563 F g⁻¹ (1 A g⁻¹). The capacitance of the asymmetric supercapacitor assembled positive electrode Ni₃(PO₄)₂/NiCo₂O₄@CNTs and negative electrode activated carbon (AC) as the negative electrode is 102.2 F⁻¹ at 1 A g⁻¹. The capacity retention rate is 83.6 % after 10,000 charge and discharge cycles. In addition, when the power density is 800 W kg⁻¹, its specific energy is as high as 36.3 Wh kg⁻¹. It proves that the composite materials prepared by this strategy have the potential application as electrode materials for capacitors.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.