Structural tailoring enables ultrahigh energy density and charge–discharge efficiency of PAEK copolymer dielectrics at high temperatures

Xie, Yunchuan; Xiong, Jie; Long, Dajiang; Zhang, Jin; Zhu, Bofeng; Zhang, Xiao; Duan, Xin‐Hua; Liu, Zhenxue; Zhang, Zhicheng

doi:10.1016/j.cej.2023.143324

Cited by 19 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polymer dielectrics that maintain a consistent dielectric constant and exhibit low dielectric loss across an extensive range of frequencies and temperatures are essential prerequisites for the practical application of commercial capacitors. As shown in Figure b, the β-relaxation peak of the PPES has appeared at higher temperatures (over 150 °C), and this is caused by the rotation of small-sized dipoles of nitrogen atoms of the nitrogen-containing heterocyclic ring of the phthalazinone moiety Figure c shows that a minor variation in ε r and tan δ values against temperature (25–200 °C) at different frequencies (10 2 to 10 6 Hz) is seen in PPES films.…”

Section: Resultsmentioning

confidence: 90%

“…As shown in Figure 2b, the β-relaxation peak of the PPES has appeared at higher temperatures (over 150 °C), and this is caused by the rotation of small-sized dipoles of nitrogen atoms of the nitrogen-containing heterocyclic ring of the phthalazinone moiety. 28 Figure 2c shows that a minor variation in ε r and tan δ values against temperature (25−200 °C) at different frequencies (10 2 to 10 6 Hz) is seen in PPES films. However, as shown in Figure 2d, it is evident that the tan δ of PSF is raised over 180 °C.…”

Section: Dielectric Propertiesmentioning

confidence: 96%

See 1 more Smart Citation

Engineering Poly(phthalazinone ether sulfone) Dielectric Films for Stable High-Temperature Capacitive Energy Storage

Gu,

Sun,

Wang

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 90%

Section: Dielectric Propertiesmentioning

confidence: 96%

Engineering Poly(phthalazinone ether sulfone) Dielectric Films for Stable High-Temperature Capacitive Energy Storage

Gu,

Sun,

Wang

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

“…P(AEK-BBP) (with 15 mol% of BBP) was prepared according to our previously work. 39 Preparation of the m -ABA-BN nanoparticles…”

Section: Methodsmentioning

confidence: 99%

“…The resulting c -P(AEK-BBP) copolymer exhibits excellent thermal stability, mechanical properties, and dielectric performance. 39…”

Section: Introductionmentioning

confidence: 99%

Superior high-temperature capacitive performance of polyaryl ether ketone copolymer composites enabled by interfacial engineered charge traps

Li,

Xie,

Xiong

et al. 2023

Mater. Horiz.

Self Cite

View full text Add to dashboard Cite

show abstract

Improved Capacitive Energy Storage at High Temperature via Constructing Physical Cross‐Link and Electron–Hole Pairs Based on P‐Type Semiconductive Polymer Filler

Yan,

Wan,

Long

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

In this work, p‐type polymer semiconductor poly(2‐((3,6,7,10,11‐pentakis (hexyloxy) triphenylene‐2‐yl)oxy)ethyl methacrylate) (PMHT) is added into polyetherimide (PEI). Benefiting from the electrostatic interaction between strong electrophilic charged phenyls of the PEI matrix and strong electronegative benzophenanthrene unit of the PMHT filler, the physical cross‐linked networks are formed in polymer blends. Meanwhile, the lowest unoccupied molecular orbital level of PEI is close to the highest occupied molecular orbital level of PMHT, which is easy to establish electron–hole pair by Coulomb force. Thus, the carrier trap is constructed in the heterojunction region between PMHT filler and PEI matrix. Both physically cross‐linked networks and electron–hole pairs can promote breakdown strength (Eb) of PEI and decrease energy loss. Importantly, PMHT filler can improve the dielectric constant of PEI. As a result, 0.75 wt% PMHT/PEI delivers an ultrahigh discharge energy density (Ud) of 10.7 J cm−3 at an Eb of 680 MV m−1 and at room temperature, and maintains a charge and discharge efficiency of above 90%. In addition, a superior Ud of 5.1 and 3.3 J cm−3 is achieved at 150 and 200 °C, respectively. This paper creates a new perspective for preparing high‐properties polymer dielectrics by combining the advantages of cross‐linking and electron–hole pairs.

show abstract

Structural tailoring enables ultrahigh energy density and charge–discharge efficiency of PAEK copolymer dielectrics at high temperatures

Cited by 19 publications

References 40 publications

Engineering Poly(phthalazinone ether sulfone) Dielectric Films for Stable High-Temperature Capacitive Energy Storage

Engineering Poly(phthalazinone ether sulfone) Dielectric Films for Stable High-Temperature Capacitive Energy Storage

Superior high-temperature capacitive performance of polyaryl ether ketone copolymer composites enabled by interfacial engineered charge traps

Improved Capacitive Energy Storage at High Temperature via Constructing Physical Cross‐Link and Electron–Hole Pairs Based on P‐Type Semiconductive Polymer Filler

Contact Info

Product

Resources

About