Green synthesis of reduced graphene oxide as high-performance electrode materials for supercapacitors

Liu, Yingying; Luo, Shaohua; Yan, Shengxue; Feng, Jian

doi:10.1007/s11581-019-03185-0

Cited by 17 publications

(7 citation statements)

References 44 publications

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“…To address the green reduction issue, several efforts have been made toward the development of environmentally friendly reducing agents for the GO, such as urea, amino acid, ascorbic acid, glucose and plant extracts, using different fabrication process. − For instance, Luo et al synthesized rGO by ascorbic acid (vitamin C) reduction by an ultrasonic agitation method. When it was employed as a supercapacitor electrode, a high specific capacitance of 272 F g –1 at 1 A g –1 and an excellent cycling stability with 82.2% retention ratio after 5000 cycles was delivered.…”

Section: Introductionmentioning

confidence: 99%

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Lin

Guo

et al. 2023

ACS Appl. Eng. Mater.

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Reduced graphene oxide (rGO) has been regarded as a promising electrode material for supercapacitors. However, its application has been restricted by the corrosive reducing agent, inevitable structure agglomeration, and limited electric double-layer capacitor (EDLC) performance. Here, we develop a 3D redox-active rGO/polymerized proanthocyanidins hybrid for high-performance supercapacitance. Using a green and effective hydrothermal process, oligomeric procyanidins (OPCs) have acted as an eco-friendly reductant for GO reduction. It also worked as a polymeric proanthocyanidin (GSP) precursor for the enhancement of pseudocapacitance, where GSP acted as a spacer for inhibiting the agglomeration of rGO/GSP sheets and improving the total specific capacitance. As a result, the as-prepared rGO/GSP composites display a cooperative energy storage mechanism of an electrochemical double-layer capacitor (EDLC) and a pseudocapacitor, with an increased specific capacitance from 141 F g–1 at 2 A g–1 for the pure rGO to 402 F g–1 at 2 A g–1 for the rGO/GSP hybrids. Meanwhile, the rGO/GSP-based symmetrical supercapacitor provides a high specific capacitance of 185 F g–1 at 0.8 A g–1, an energy density of 25.8 Wh kg–1 at a power density of 0.8 kW kg–1, and a good cycling stability with 60.8% capacitance retention over 10000 cycles at 2 A g–1. Such an excellent electrochemical performance comes from the agglomeration reduction structure and synergistic effects between the highly conductive graphene and pseudocapacitive GSP.

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Section: Introductionmentioning

confidence: 99%

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Lin

Guo

et al. 2023

ACS Appl. Eng. Mater.

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“…With the globalization of economic development and the improvement of energy supply, finding new energy storage devices has become focused attention of the new energy technology industry. [1][2][3][4][5][6][7][8][9][10] Lithium-ion battery (LIB) is the best comprehensive rechargeable battery system software at this stage. 3,[11][12][13][14][15][16][17][18][19][20][21][22][23] At present, LIB is mainly used in mobile electronic equipment, and its application has begun to develop to the small size and lightweight of microelectrical appliances, as well as large electric equipment.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on synthesis of spinel LiNi ₀ _. ₅ Mn ₁ _. ₅ O ₄ cathode material and its electrochemical properties by two‐stage roasting

et al. 2021

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LiNi 0.5 Mn 1.5 O 4 (LNMO) cathode material is burnt in two-stage roasting process for lithium battery. Carried out X-ray diffraction (XRD), scanner transmission electron microscope (SEM), laser grain fineness distribution and precise measurement of photoelectric catalysis, and qualitatively analyzed the LNMO cathode material. The SEM image shows that the LNMO battery cathode material is combined with μm-level particles (10 μm in diameter). The XRD pattern shows that the structure of the prepared LNMO cathode material belongs to the Fd3m space group. After being burned at 650 C for 8 hours and refrigerated milling, it is burned again at 1000 C for 8 hours. At this time, the LNMO cathode material prepared by quenching has the best photocatalytic properties. In the range of 3.5 to 5.1 V, the original charge-discharge volume of the prepared battery cathode material is shown as 130.3 mAh g −1 at a speed of 1.0 C. After 100 cycles, the sample saves 96.7% (1.0 C) of the original volume. At 1025 C, at different speeds in the discontinuance voltage range of 3.5 to 5.1 V, the charge and discharge quantity of the negative electrode raw materials obtained by individuals can be maintained at about 133.6 (0.2 C), 129.9 (1.0 C), 129 (2.0 C), respectively.

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“…With the leap‐forward development of society, the demand for new energy in economic development is increasing exponentially. [ 1–5 ] Lithium‐ion battery has the advantages of high energy density, a high charging and discharging voltage platform, basically no memory effect, good temperature adaptability, and low environmental pollution. In particular, lithium‐ion batteries have broad application prospects and huge market demand in mobile communication, portable notebook computers, digital cameras and other digital products, as well as space technology, making them the best comprehensive rechargeable battery system software at this stage.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Calcination Temperatures on the High‐Temperature Properties of AlPO₄‐Coated Modified Spinel LiNi_0.5Mn_1.5O₄ Material

et al. 2021

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Herein, it is aimed to synthesize a LiNi0.5Mn1.5O4 material with good cycle performance, high specific capacity, and excellent electrochemical performance by a high‐temperature solid‐state method and surface coating modification processes. To improve the cyclic performance of LiNi0.5Mn1.5O4 at elevated temperature (55 °C), the AlPO4 coating process conditions are studied. The effect of the calcination temperature on the performance of the AlPO4 coating is focused on. In the range of 3.5–5.1 V, the sample of LiNi0.5Mn1.5O4 coated with AlPO4 is calcined at 600 °C and capacity retention is 97.5% after 100 cycles at high temperature (55 °C). The results show that the preparation of AlPO4 coating under appropriate process conditions effectively prevents the corrosion of hydrogen fluoride (HF) on the electrode material in the electrolyte and improves the high‐temperature cycling performance of the material.

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Green synthesis of reduced graphene oxide as high-performance electrode materials for supercapacitors

Cited by 17 publications

References 44 publications

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Study on synthesis of spinel LiNi ₀ _. ₅ Mn ₁ _. ₅ O ₄ cathode material and its electrochemical properties by two‐stage roasting

Effect of Different Calcination Temperatures on the High‐Temperature Properties of AlPO₄‐Coated Modified Spinel LiNi_0.5Mn_1.5O₄ Material

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Green synthesis of reduced graphene oxide as high-performance electrode materials for supercapacitors

Cited by 17 publications

References 44 publications

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Green Fabrication of Agglomeration-Reductive and Electrochemical-Active Reduced Graphene Oxide/Polymerized Proanthocyanidins Electrode for High-Performance Supercapacitor

Study on synthesis of spinel LiNi 0 . 5 Mn 1 . 5 O 4 cathode material and its electrochemical properties by two‐stage roasting

Effect of Different Calcination Temperatures on the High‐Temperature Properties of AlPO4‐Coated Modified Spinel LiNi0.5Mn1.5O4 Material

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Product

Resources

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Study on synthesis of spinel LiNi ₀ _. ₅ Mn ₁ _. ₅ O ₄ cathode material and its electrochemical properties by two‐stage roasting

Effect of Different Calcination Temperatures on the High‐Temperature Properties of AlPO₄‐Coated Modified Spinel LiNi_0.5Mn_1.5O₄ Material