Ultra-low electrical conductivity originated from ordered and tightly aggregated interfacial regions in polymer nanocomposites

Ji, Minzun; Min, Daomin; Wu, Qiang; Liu, Wenfeng; Li, Shengtao; Qin, Shaorui; Zhu, Shenglong

doi:10.1016/j.compositesb.2022.109649

Cited by 16 publications

(7 citation statements)

References 46 publications

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“…However, several hypotheses have been proposed. Dispersed nanoparticles in an LDPE matrix can absorb polar molecules or ions, which act as charge carriers, 36,37 they can introduce deep trapping sites for electrons or holes located in the vicinity of the nanoparticle surface [38][39][40][41][42] and they can lead to recombination of charge carriers. 43 The 20 : 38 : 42 SEBS : PP : LDPE ternary blend displayed a conductivity of σ DC ≈ 4.3 × 10 −15 S m −1 at 70 °C and 30 kV mm −1 , which is 10-times lower than the value measured for neat LDPE (Table 1).…”

Section: Resultsmentioning

confidence: 99%

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Highly insulating thermoplastic nanocomposites based on a polyolefin ternary blend for high-voltage direct current power cables

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Highly insulating thermoplastic nanocomposites based on a polyolefin ternary blend for high-voltage direct current power cables

et al. 2022

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“…To strengthen the interface between matrix and filler in polymer dielectrics, many researchers have developed a variety of surface modification methods for inorganic fillers, including physically adsorbed and chemically grafted, with promising results. [ 124–128 ] A novel and attractive interface‐strengthening strategy is proposed to construct a double cross‐linking network in DPAES polymer dielectric (a high‐performance polymer with reactive groups, large dipole units, and biphenyl structure, heat resistant poly(arylene ether sulfone)s), where chemical cross‐linking occurs at the interface and then at the matrix itself. [ 129 ] The approach aims to further strengthen the interfacial interaction and achieve local molecular change motion retardation by re‐cross‐linking the polymer chains after the inorganic filler surface treatment.…”

Section: Computational Simulation and Performance Optimization Of Fil...mentioning

confidence: 99%

Computational Simulation for Breakdown and Energy Storage Performances with Optimization in Polymer Dielectrics

Dong

Yin

Zhang

et al. 2023

Adv Funct Materials

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The breakthrough of energy storage technology will enable energy distribution and adaptation across space‐time, which is revolutionary for the generation of energy. Optimizing the energy storage performance of polymer dielectrics remains challenging via the physical process of electrical breakdown in solid dielectrics is hard to be intuitively obtained. In this review article, the application of computational simulation technologies is summarized in energy‐storage polymer dielectrics and the effect of control variables and design structures on the material properties with an emphasis on dielectric breakdown and energy storage performance are highlighted. The prediction and evaluation of material properties by combining various data analysis methods are reviewed. Finally, the outlook and challenges are discussed based on their current developments. This article covers not only an overview of the state‐of‐the‐art advances of breakdown modeling in energy‐storage polymer dielectrics but also the prospects that provide a new knob to synthesize high energy‐storage polymer dielectrics via computational simulation and a new research paradigm.

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“…As a kind of localized state, charge traps are particularly important in either enhancing or restricting the charge transport of dielectric materials, [ 129 ] At a mesoscopic scale, the electronic structure is complex and closely related to the dielectric materials. [ 127,130,131 ] The electronic structure at the interface includes the energy level arrangement at a thin scale and the band bending in the thicker region. [ 132 ] The former contributes to carrier injection (e.g., electroluminescent devices or spectral sensitization) and the latter causes carrier separation (e.g., solar cells).…”

Section: Origin Of Interface Chargesmentioning

confidence: 99%

Interface Charge Characteristics in Polymer Dielectric Contacts: Analysis of Acoustic Approach and Probe Microscopy

Wang

et al. 2023

Adv Materials Inter

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Interfaces are essential components in polymer contact systems, which widely exist in electronic devices and power equipment. Interface charge originating from the mismatch of the electronic structure in interfaces is one of the key issues to modify the device performance due to its multifunctional migration and accumulation behaviors. Hence, the detection and analysis of the interface charge characteristics are of great importance to deeply understand the polymer contact system in various devices. This paper presents an overview of recent research progress in the interface charge properties at dielectric interfaces. Based on the theoretical analysis of the MWS polarization and electronic localized states, two typical approaches of discussing the interface charges from micrometer to millimeter are mainly studied. Acoustic method is prevalent in detecting the space charge in various dielectrics. However, owing to its limited resolution (several µm), it is difficult to clarify the charge distributions at the interface with a micro‐scale. Probe microscopy presents a promising technique due to its flexible surface potential detection at a submicron scale. The challenges and prospects of acoustic and probe microscopy methods are discussed in this paper. The advanced techniques of interface charges can promote the development of new energy electronic devices.

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Ultra-low electrical conductivity originated from ordered and tightly aggregated interfacial regions in polymer nanocomposites

Cited by 16 publications

References 46 publications

Highly insulating thermoplastic nanocomposites based on a polyolefin ternary blend for high-voltage direct current power cables

Highly insulating thermoplastic nanocomposites based on a polyolefin ternary blend for high-voltage direct current power cables

Computational Simulation for Breakdown and Energy Storage Performances with Optimization in Polymer Dielectrics

Interface Charge Characteristics in Polymer Dielectric Contacts: Analysis of Acoustic Approach and Probe Microscopy

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