以MoS<sub>2</sub>修饰的3D打印还原石墨烯气凝胶制备微型超级电容器电极

Wang Meng-ya; Li Shi-you; Gao Can-kun; Fan Xiao-qi; Quan Yin; Li Xiao-hua; Li Chun-lei; Zhang Ning-shuang

doi:10.1016/S1872-5805(24)60823-1

以MoS₂修饰的3D打印还原石墨烯气凝胶制备微型超级电容器电极

doi: 10.1016/S1872-5805(24)60823-1

王梦雅^{1, 2},
李世友^{1, 2, 3},
高灿坤^{1, 2},
樊晓琦^{1, 2},
权银^{1, 2},
李小华^{1, 2},
李春雷^{1, 2, 3},
张宁霜^{1, 2, 3, ,}

1.
兰州理工大学石油化工技术学院, 中国兰州730050
2.
甘肃省低碳能源与化工工程重点实验室, 中国兰州730050
3.
甘肃省锂离子电池正极材料工程研究中心, 中国白银, 730050

基金项目: 甘肃省重点研发计划（21YF5GA079）；兰州理工大学红柳一流学科建设计划

详细信息

通讯作者:
张宁霜，博士，副教授. E-mail：zhangns@lut.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2023-01-01
- 录用日期: 2023-11-10
- 修回日期: 2023-01-01
- 网络出版日期: 2023-11-20

Electrode for Microsupercapacitors based on MoS₂ Modificated Reduced Graphene Oxide Aerogels achieving by 3D Printing

Wang Meng-ya^{1, 2},
Li Shi-you^{1, 2, 3},
Gao Can-kun^{1, 2},
Fan Xiao-qi^{1, 2},
Quan Yin^{1, 2},
Li Xiao-hua^{1, 2},
Li Chun-lei^{1, 2, 3},
Zhang Ning-shuang^{1, 2, 3
, ,}

1.
School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, P.R. China
2.
Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou 730050, P.R. China
3.
Gansu Lithium Ion Battery Cathode Material Engineering Research Center, Baiyin, 730050, P.R. China

More Information

Corresponding author: Zhang Ning-shuang. E-mail：zhangns@lut.edu.cn

摘要

摘要: 微型超级电容器（MSCs）具有高功率密度和卓越的循环性能，引起了广泛的兴趣，并提供了广泛的潜在应用。然而，制备具有极高表面电容和能量密度的MSCs电极仍然存在挑战。本研究使用还原石墨烯气凝胶（GA）和二硫化钼（MoS₂）作为材料，结合三维打印和表面修饰方法成功构建了具有超高表面电容和能量密度的MSCs电极。通过三维打印技术，我们获得了具有稳定宏观结构和GA交联微孔结构的电极。此外，我们采用溶液法在三维打印电极表面加载二硫化钼纳米片，进一步提高了电化学性能。所制备电极的表面电容达到3.99 F cm⁻²，功率密度为194 µW cm⁻²，能量密度为1997 mWh cm⁻²，表现出卓越的电化学性能和循环稳定性。这项研究为制备具有高表面电容和高能量密度的微型超级电容器电极提供了一种简单高效的方法，使其成为便携电子设备的理想选择。这项研究在MSCs电极领域具有重要的创新意义。
- 3D打印 /
- 表面修饰 /
- 高面电容 /
- 高能量密度 /
- 超级电容器
Abstract: The high power density and excellent cyclic performance of micro-supercapacitors (MSCs) have garnered significant interest and offer a broad array of potential applications. However, there are still challenges in preparing MSCs electrodes with extremely high area capacitance and energy density. In this study, reduced graphene oxide aerogel (GA) and MoS₂ were used as materials, combined with 3D printing and surface modification methods, and MSCs electrodes with ultra-high area capacitance and energy density were successfully constructed. Through 3D printing technology, we obtained electrodes with stable macro structure and GA crosslinked micropore structure. In addition, we used the solution method to load molybdenum disulfide nanosheets on the surface of the 3D printed electrode, further improving the electrochemical performance. The surface capacitance of the prepared electrode reached 3.99 F cm⁻², the power density was 194 µW cm⁻², and the energy density was 1997 mWh cm⁻², showing excellent electrochemical performance and cycle stability. This research provides a simple and efficient method for preparing micro supercapacitor electrodes with high surface capacitance and high energy density, making them ideal for portable electronic devices. This research has important innovative significance in the field of MSCs electrodes.
- 3D printing /
- Surface modified /
- High areal capacitance /
- High energy density /
- Supercapacitor

HTML全文

Figure 1. Procedure of the overall printing scheme, loading engineering, and structure of an assembled device

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Figure 2. Morphology characterization of the raw material and 3DPE framework sample. (a) SEM image and (b) TEM image of GO, (d) SEM image and (e) TEM image of GA, (c) and (f) SEM images at different magnifications of the 3DPE framework sample

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Figure 3. Rheological properties of the formulated ink in (a) viscosity versus shearing rate and (b) storage and loss modulus versus shear stress. Raman spectra of raw materials (c) GO and GA. Diffraction XRD patterns collected in 2θ scan of (d) GO, GA and 3DPE. XPS high-resolution scans of (e) C 1s of GO, (f) C 1s of GA, (g) C 1s of 3DPE

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Figure 4. (a) The galvanostatic charge-discharge curves at a current density of 1 A g⁻¹ and (b) the cycling voltammetry curves at a scanning rate of 10 mV s⁻¹ of 3DPE with different layers. (c) The areal and (d) gravimetric capacities at different current density of 3DPE with different layers. (e) The areal and (f) gravimetric capacities at a current density of 1 A g⁻¹ of 3DPE with different layers. (g) Impedance Nyquist plots of 3DPE with different layers. (h) Cycling stability of 3DPE-4 at a current density of 1 A g⁻¹

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Figure 5. Morphology characterization of the Mo-3DPE, (a) SEM image, (b) TEM image and (c) EDX mapping

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Figure 6. (a) Raman spectra, (b) Diffraction XRD patterns collected in 2θ scan of 3DPE and Mo-3DPE, (c) XPS high-resolution scans of S 2p of Mo-3DPE, (d) XPS high-resolution scans of Mo 3d of MoS₂, (e) XPS high-resolution scans of Mo 3d of Mo-3DPE

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Figure 7. (a) The gravimetric and (b) areal capacities at a current density of 1 A g⁻¹ of 3DPE-4 and Mo-3DPE-4. (c) The cycling voltammetry curves at a scanning rate of 10 mV s⁻¹ and (d) the galvanostatic charge-discharge curves at a current density of 1 A g⁻¹ of 3DPE-4 and Mo-3DPE-4. (e) Impedance Nyquist plots of 3DPE-4 and Mo-3DPE-4. (f) The contribution of Mo-3DPE at different scan rate. (g) Cycling stability of Mo-3DPE-4 at a current density of 1 A g⁻¹

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Figure 8. (a) Ragone plots [3,21,27,44-46]. (b) Comparison of the areal capacitance and gravimetric areal energy density in this work with those in other works [8,25,38,44-46].

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