Graphene-conducting polymer nanocomposites for enhancing electrochemical capacitive energy storage

Shen, Fei; Pankratov, Dmitry; Chi, Qijin

doi:10.1016/j.coelec.2017.10.023

Cited by 45 publications

(16 citation statements)

References 92 publications

(56 reference statements)

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“…relatively low cycle stability), which results from their low intrinsic electrical conductivity and inadequate amount of electroactive sites. The proposed strategies to overcome the abovementioned problems include designed synthesis of nanostructures, binder-free electrodes grown on conductive substrates [84][85][86][87] and fabrication of nanohybrids with good conductive supports such as porous carbons [88][89][90][91], graphene [92][93][94][95] and conducting polymers [96][97][98][99][100][101]. It is well known that the electrochemical performances largely depend on the morphology and surface area of electrode materials; thus, the controlled synthesis of nickel sulfide nanomaterials with stable structure and large surface area is of great importance [102][103][104][105].…”

Section: Reaction Mechanismmentioning

confidence: 99%

Nickel sulfide-based energy storage materials for high-performance electrochemical capacitors

et al. 2020

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Supercapacitors are favorable energy storage devices in the field of emerging energy technologies with high power density, excellent cycle stability and environmental benignity. The performance of supercapacitors is definitively influenced by the electrode materials. Nickel sulfides have attracted extensive interest in recent years due to their specific merits for supercapacitor application. However, the distribution of electrochemically active sites critically limits their electrochemical performance. Notable improvements have been achieved through various strategies such as building synergetic structures with conductive substrates, enhancing the active sites by nanocrystallization and constructing nanohybrid architecture with other electrode materials. This article overviews the progress in the reasonable design and preparation of nickel sulfides and their composite electrodes combined with various bifunctional electric double-layer capacitor (EDLC)-based substances (e.g., graphene, hollow carbon) and pseudocapacitive materials (e.g., transition-metal oxides, sulfides, nitrides). Moreover, the corresponding electrochemical performances, reaction mechanisms, emerging challenges and future perspectives are briefly discussed and summarized.

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Section: Reaction Mechanismmentioning

confidence: 99%

Nickel sulfide-based energy storage materials for high-performance electrochemical capacitors

et al. 2020

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“…Liu et al reported tunable sulfuration engineered electrodes made from NiO/Ni 3 S 2 nanosheets constructed over a porous Ni foam and achieved a specific capacitance of 2153 F/g [ 112 ]. They constructed an asymmetric SC device using the NiO/Ni 3 S 2 nanosheets as the positive electrode, activated carbon as the negative electrode, and 3 M KOH as the electrolyte, and the device performance was evaluated by cyclic voltammetry (CV) study [ 109 , 110 , 111 ]. Liu et al considered that the redox reactions were the main reason for the good performance, and the CV features of their testing results are shown in Figure 5 .…”

Section: Advanced Electrodes For Scs: Present Status and Prospectsmentioning

confidence: 99%

“…Another challenge for graphene to be used in electronic applications lies in the π-π stacking interactions of the graphitic sheets, which tends to result in their self-aggregation [108]. To counter this aggregation challenge, the distribution of metal/metal oxide over the graphitic sheets could be a useful strategy, which could also increase the surface area and conductivity of the graphitic sheets [109]. Among various metal oxides, NiO has been widely investigated for SC applications.…”

Section: Metal-based Electrodesmentioning

confidence: 99%

Current Research of Graphene-Based Nanocomposites and Their Application for Supercapacitors

et al. 2020

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This review acmes the latest developments of composites of metal oxides/sulfide comprising of graphene and its analogues as electrode materials in the construction of the next generation of supercapacitors (SCs). SCs have become an indispensable device of energy-storage modes. A prompt increase in the number of scientific accomplishments in this field, including publications, patents, and device fabrication, has evidenced the immense attention they have attracted from scientific communities. These efforts have resulted in rapid advancements in the field of SCs, focusing on the development of electrode materials with features of high performance, economic viability, and robustness. It has been demonstrated that carbon-based electrode materials mixed with metal oxides and sulfoxides can perform extremely well in terms of energy density, durability, and exceptional cyclic stability. Herein, the state-of-the-art technologies relevant to the fabrication, characterization, and property assessment of graphene-based SCs are discussed in detail, especially for the composite forms when mixing with metal sulfide, metal oxides, metal foams, and nanohybrids. Effective synthetic methodologies for the nanocomposite fabrications via intercalation, coating, wrapping, and covalent interactions will be reviewed. We will first introduce some fundamental aspects of SCs, and briefly highlight the impact of graphene-based nanostructures on the basic principle of SCs, and then the recent progress in graphene-based electrodes, electrolytes, and all-solid-state SCs will be covered. The important surface properties of the metal oxides/sulfides electrode materials (nickel oxide, nickel sulfide, molybdenum oxide, ruthenium oxides, stannous oxide, nickel-cobalt sulfide manganese oxides, multiferroic materials like BaMnF, core-shell materials, etc.) will be described in each section as per requirement. Finally, we will show that composites of graphene-based electrodes are promising for the construction of the next generation of high performance, robust SCs that hold the prospects for practical applications.

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“…As shown in Table 2, current SCs are classified as i) double layer SCs (using the charge-storing ability of the electrical double layer (EDL) formed on the electrode/ electrolyte interface), ii) pseudo-SCs (employing so-called pseudocapacitive surface or near-surface charge transfer reactions), and iii) hybrid SCs combining electrodes of first two types, which are capable to provide high energy density, close to that of conventional Li-ion batteries. [89] In recent decades, significant improvements in capacitance and operational stability, and faster and cheaper synthesis methods of nanocomposite materials have been reported. These include activated carbon, nanotubes, and graphene.…”

Section: Supercapacitorsmentioning

confidence: 99%

“…These include activated carbon, nanotubes, and graphene . The pseudocapacitive features of various conducting polymers, transition metal oxides, and sulfides have also been widely used in pseudo‐ and hybrid SCs …”

Section: Supercapacitorsmentioning

confidence: 99%

Research Frontiers in Energy‐Related Materials and Applications for 2020–2030

Blay

Galian

Mureşan

et al. 2020

Advanced Sustainable Systems

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structure was found for the first time in a mineral composed by CaTiO 3 in 1839. Since then, multiple metal oxide perovskites (AMO 3 ) were developed, which have interesting properties for ferroelectric, superconductive, and pyroelectric applications. Metal halide perovskites (X is a halide anion such as Cl − , Br − , or I − ), which were developed later, display promising semiconducting properties. In particular, lead halide perovskites (APbX 3 ) are the most widely studied perovskite composition and are classified according to the A cation into hybrid perovskites (methylammonium bromide, MA or formamidinium, FA) and all-inorganic perovskites (cesium, Cs). [2] The electronic properties of the perovskites are related to the M-X bond, while the size of the A cation can introduce crystal distortion and change the symmetry of the ideal cubic crystal structure. [3] Interestingly, by using a large A organic cation, low-dimensional halide perovskites can be formed, including 2D sheets, 1D chains, or 0D clusters. [4] Lead halide perovskites are revolutionizing photovoltaic technology thank to their outstanding optical and electronic properties, low cost, and simple preparation. Compared to silicon-based technology, perovskites are prepared from more abundant and low-cost precursors. The superior performance and high efficiency of perovskite-based solar cells (PSC) are due to i) high optical absorption coefficient, ii) long carrier diffusion length This article delineates the state of the art for several materials used in the harvest, conversion, and storage of energy, and analyzes the challenges to be overcome in the decade ahead for them to reach the market and benefit society. The materials covered have had a special interest in recent years and include perovskites, materials for batteries and supercapacitors, graphene, and materials for hydrogen production and storage. Looking at the common challenges for these different systems, scientists in basic research should carefully consider commercial requirements when designing new materials. These include cost and ease of synthesis, abundance of precursors, recyclability of spent devices, toxicity, and stability. Improvements in these areas deserve more attention, as they can help bridge the gap for these technologies and facilitate the creation of partnerships between academia and industry. These improvements should be pursued in parallel with the design of novel compositions, nanostructures, and devices, which have led most interest during the past decade. Research groups are encouraged to adopt a cross-disciplinary mindset, which may allow more efficient use of existing knowledge and facilitate breakthrough innovation in both basic and applied research of energy-related materials.

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Graphene-conducting polymer nanocomposites for enhancing electrochemical capacitive energy storage

Cited by 45 publications

References 92 publications

Nickel sulfide-based energy storage materials for high-performance electrochemical capacitors

Nickel sulfide-based energy storage materials for high-performance electrochemical capacitors

Current Research of Graphene-Based Nanocomposites and Their Application for Supercapacitors

Research Frontiers in Energy‐Related Materials and Applications for 2020–2030

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