Facile synthesis of biomass-derived porous carbons incorporated with CuO nanoparticles as promising electrode materials for high-performance supercapacitor applications

Zhan, Yinbo; Bai, Jiaming; Guo, Feiqiang; Zhou, Hui‐Ming; Shu, Rui; Yu, Youjin; Lin, Qian

doi:10.1016/j.jallcom.2021.161014

Cited by 47 publications

(13 citation statements)

References 38 publications

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“…The energy densities of our device are in the range of 20.86 to 24.20 Wh kg −1 (0.26 to 0.30 Wh cm −2 ), corresponding to the power densities of 2.14 to 0.65 kW kg −1 (26.49 to 8.08 W cm −2 ). The energy densities are competitive with some other Cu x O-based supercapacitors (Table S2) [26,27,36,38,39,[43][44][45]. For instance, a 3D Cu 2 O@Cu nanoneedle arrays electrode had an energy density of 26.0 Wh kg −1 at power density of 1.8 kW kg −1 [27].…”

Section: Resultsmentioning

confidence: 99%

“…The electrode has unchanged phase compositions after cycling, and the Cu x O flakes become thicker than the initial structure (Figure S12 and inset of Figure 5i). We compared the specific capacitance of Cu x O-based electrodes, as shown in Table S1 [ [25][26][27]36,38,39,[41][42][43][44][45], and the results reveal that our electrode is comparable to the pure Cu x O material but inferior, compared to the Cu x O-based composites. Further investigations might be carried out to fabricate hybrid electrodes based on our materials.…”

Section: Resultsmentioning

confidence: 99%

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CuxO-Modified Nanoporous Cu Foil as a Self-Supporting Electrode for Supercapacitor and Oxygen Evolution Reaction

Lin

et al. 2022

Nanomaterials

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Designing and modifying nanoporous metal foils to make them suitable for supercapacitor and catalysis is significant but challenging. In this work, CuxO nanoflakes have been successfully in situ grown on nanoporous Cu foil via a facile electrooxidation method. A Ga-assisted surface Ga-Cu alloying–dealloying is adopted to realize the formation of a nanoporous Cu layer on the flexible Cu foil. The following electrooxidation, at a constant potential, modifies the nanoporous Cu layer with CuxO nanoflakes. The optimum CuxO/Cu electrode (O-Cu-2h) delivers the maximum areal capacitance of 0.745 F cm−2 (410.27 F g−1) at 0.2 mA cm−2 and maintains 94.71% of the capacitance after 12,000 cycles. The supercapacitor consisted of the O-Cu-2h as the positive electrode and activated carbon as the negative electrode has an energy density of 24.20 Wh kg−1 and power density of 0.65 kW kg−1. The potential of using the electrode as oxygen evolution reaction catalysts is also investigated. The overpotential of O-Cu-2h at 10 mA cm−2 is 394 mV; however, the long-term stability still needs further improvement.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

CuxO-Modified Nanoporous Cu Foil as a Self-Supporting Electrode for Supercapacitor and Oxygen Evolution Reaction

Lin

et al. 2022

Nanomaterials

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“…These high values are comparable to those previously reported in the literature for AC/metal oxide materials. For example, L‐Co 3 O 4 //AC device possessed 23 Wh kg −1 at 400.6 W kg −1 , [ 56 ] CuO‐AC//AC device showed 11.7 Wh kg −1 at 628.7 W kg −1 , [ 57 ] Co‐Al‐Ox/Sy@LSCN//LSCN device demonstrated 21.8 Wh kg −1 at 374 W kg −1 , [ 58 ] NiS‐Ni@C//WS‐AC device exhibited 28 Wh kg −1 at 380 W kg −1 , [ 59 ] CBPC‐2‐800@MnO X //CBPC‐2‐800@MnO X device showed 8.4 Wh kg −1 at 1000 W kg −1 , [ 60 ] and the energy density of CCAC‐Fe‐M‐50%//CCAC‐Fe‐M‐50% device was equal to 9.6 Wh kg −1 at 250 W kg −1 . [ 61 ]…”

Section: Resultsmentioning

confidence: 99%

In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

Wang

et al. 2022

Energy Tech

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Next‐generation energy storage systems require green and renewable electrodes with a high specific capacity, which combine biomass waste and bimetallic hydroxide synergically to satisfy environmental enhancements and economic benefits. Herein, a novel approach to improving the electrical conductivity of bimetallic materials by in situ growing NiCo layered double hydroxides (LDHs) with pseudocapacitance capability on KMnO4‐activated fungus bran‐derived carbons (FBCs) is reported, achieving improved electrochemical performance in supercapacitors (SCs). The hierarchical porous FBC substrate contributes to the homogeneous growth of the LDHs and high electronic and ionic conductivity. The optimal composite (FBC/NCL‐3) with a 3D interconnected structure provides a specific capacitance of 1938 F g−1 at a current density of 1 A g−1. Correspondingly, the hybrid battery‐SC device composed of FBC/NCL‐3 and FBC provides favorable stability (76% specific capacity retention at 5 A g−1 for 3000 cycles) with an operating voltage of 1.4 V and a high energy density of 37.3 Wh kg−1 at a power density of 695.6 W kg−1. This work demonstrates a promising strategy using FBC as a substrate for growing LDH materials aiming to achieve high‐performance SCs.

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“…CuO to prepare hybrid composites for energy storage, [162][163][164] which helps improve the charge/discharge cycle stability and storage capacity of the nanostructured composites. [165] Ghosh and co-workers synthesized nanocomposite with a stacked layered structure in which CuO nanosheets were deposited onto rGO.…”

Section: Cu-omentioning

confidence: 99%

Emerging 2D Copper‐Based Materials for Energy Storage and Conversion: A Review and Perspective

Ren

Wang

Chen

et al. 2022

Small

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extensive interest, [1][2][3] such as SCs, [4] rechargeable ion batteries, [5] water splitting, [6] metal-air batteries, [7] and CO 2 RR. [8] However, the practical applications of SCs and rechargeable ion batteries are limited by low energy density and low power density, respectively. [9,10] The multiple-electron transfer reactions in water splitting have posed a significant challenge that limits the catalytic efficiency and cycle stability. [11] At present, the urgent issue of metal-air battery is to design high-performance bifunctional electrodes. [12] For CO 2 RR, the technical realization is limited by the activity and selectivity of the catalyst, and the selectivity of its product beyond that of CO. [13,14] In these electrochemical devices, electrodes represent the core component, which dictates the efficiency, energy and power density, as well as catalytic activity and durability.Since the birth of graphene, 2D materials have attracted great attention due to their unique electrochemical, mechanical, and optical properties and diverse applications, as manifested in over 3000 academic papers each year. [15,16] 2D materials possess some structural advantages over the 0D and 1D counterparts by interlayer gap bonding and weak out-of-plane Van der Waals interaction, which provides an interesting platform for energy storage and conversion research. [17,18] So far, the 2D material family mainly includes transition metal dichalcogenides, transition metal carbides, layered metal oxides, layered double hydroxides and other graphene-like materials, such as black phosphorus. Of these, copper-based materials have received extensive attention because of high natural abundance, low price, high strength, arc erosion resistance, easy preparation of various nanoshapes, wear resistance, etc. (Figure 1), [19,20] leading to excellent electrochemical performance and advancement of electrochemical energy storage and conversion (Figure 2). For example, with a large surface area and potential size effect, CuO nanostructures, a p-type semiconductor, have excellent physical and chemical properties for SCs, as well as interesting magnetic and superhydrophobic properties, as compared with other metal oxides, such as TiO 2 , ZnO, WO 3 , and SnO 2 . [21] Cu-S compounds are a promising lithium cathode with a high energy density and long cycling stability. [22] Cu-Se is also considered as a novel cathode 2D materials have shown great potential as electrode materials that determine the performance of a range of electrochemical energy technologies. Among these, 2D copper-based materials, such as Cu-O, Cu-S, Cu-Se, Cu-N, and Cu-P, have attracted tremendous research interest, because of the combination of remarkable properties, such as low cost, excellent chemical stability, facile fabrication, and significant electrochemical properties. Herein, the recent advances in the emerging 2D copper-based materials are summarized. A brief summary of the crystal structures and synthetic methods is started, and innovative strategies for improving electro...

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Facile synthesis of biomass-derived porous carbons incorporated with CuO nanoparticles as promising electrode materials for high-performance supercapacitor applications

Cited by 47 publications

References 38 publications

CuxO-Modified Nanoporous Cu Foil as a Self-Supporting Electrode for Supercapacitor and Oxygen Evolution Reaction

CuxO-Modified Nanoporous Cu Foil as a Self-Supporting Electrode for Supercapacitor and Oxygen Evolution Reaction

In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

Emerging 2D Copper‐Based Materials for Energy Storage and Conversion: A Review and Perspective

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