Citation: Yan Gao, Ying Huang, Boming Lu, Meng Zong, Zheng Zhang. Hierarchical carbon nanofiber-based NiCo₂S₄/NiCo-LDH/C nanostructure array with efficient charge transfer for flexible solid-state supercapacitors[J]. Chinese Chemical Letters, ;2026, 37(5): 111347. doi: 10.1016/j.cclet.2025.111347 shu

Hierarchical carbon nanofiber-based NiCo₂S₄/NiCo-LDH/C nanostructure array with efficient charge transfer for flexible solid-state supercapacitors

Yan Gao ^a ,
Ying Huang ^{a, *,} ,
Boming Lu ^b ,
Meng Zong ^{a, *,} ,
Zheng Zhang ^{c, *,}

a.
MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
b.
School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, China
c.
State Key Laboratory of Efficient Production of Forest Resources, Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China

yingh@nwpu.edu.cn

nwpu_zongmeng@163.com

zhengzhang0527@163.com

Received Date: 31 March 2025
Revised Date: 11 May 2025
Accepted Date: 19 May 2025
Available Online: 21 May 2025

Figures(5)

Layered double hydroxides (LDHs) hold great promise for flexible solid-state supercapacitors owing to their high theoretical capacitance and distinctive architecture. However, their proneness to agglomeration and poor electrical conductivity have long hindered the manifestation of outstanding electrochemical performance. In a groundbreaking approach, we have engineered a hierarchical carbon nanofiber-based NiCo₂S₄/NiCo-LDH/C nanostructure array. The meticulously crafted hierarchical structure not only imparts remarkable stability to the electrode but also ingeniously harnesses the synergistic interplay among materials. Through density functional theory calculations, we have precisely identified and verified the active sites for charge transfer, unveiling a new understanding of the underlying mechanisms. This unique structure significantly facilitates ion transfer in the vicinity of NiCo-LDH, substantially elevates electrical conductivity, and notably increases the adsorption capacity of OH^-. Moreover, it gives a substantial boost to the quantum capacitance. As a result, the electrode showcases a high specific capacitance of 1838.3 F/g. This research pioneers an effective and versatile strategy that can be readily applied to the majority of LDHs, opening up new avenues for enhancing their efficiency of supercapacitor materials.
- Supercapacitors,
- Structural design,
- Physical vapor deposition,
- Flexible device
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Hierarchical carbon nanofiber-based NiCo2S4/NiCo-LDH/C nanostructure array with efficient charge transfer for flexible solid-state supercapacitors

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通讯作者: 陈斌, bchen63@163.com

Hierarchical carbon nanofiber-based NiCo₂S₄/NiCo-LDH/C nanostructure array with efficient charge transfer for flexible solid-state supercapacitors