Cold sintered composites consisting of PEEK and metal oxides with improved electrical properties via the hybrid interfaces

Si，Mingming1; Guo，Jing1; Hao，Jianyu2; Zhao，Xuetong3; Randall，Clive A.4; Wang，Hong1,2,5

2021-12-01

10.1016/j.compositesb.2021.109349

COMPOSITES PART B-ENGINEERING   影响因子和分区

1359-8368

The manipulation of interfacial structures offers an effective route to improve the physical and chemical properties of materials. However, it is challenging to design ceramic-based composites with hybrid interfaces involved with organics and inorganics through the conventional sintering technique, due to the incompatibility of these materials at high temperatures. Here, we propose a strategy to integrate poly-ether-ether-ketone together with several metal-oxide additives into zinc oxide (ZnO) to form composite varistors via cold sintering process. Nanoscale layers of hybrid additives are dispersed between densified ZnO grain structures forming Schottky barriers, which dramatically improves the electrical properties of the resulted composites. Compared with pure ZnO, the breakdown electric field at 0.1 mA mm reaches over 13 kV mm. Particularly, the composite shows a switch-like effect similar with switching devices, with an extraordinarily high nonlinear coefficient of 375. In addition, the elastic module decreases with the addition of PEEK. Given the flexibility in the dopants of polymers and metal oxides, this work provides a unique route to design composite materials with superior performances.

Cold sintering process Dielectrics Inorganic-organic composites Varistors Zinc oxide

SCI ; EI

英语

其他

WOS:000704344600001

20213910964243

Additives ; Dielectric materials ; Electric fields ; Ethers ; Hybrid materials ; II-VI semiconductors ; Ketones ; Metals ; Schottky barrier diodes ; Sintering ; Varistors

Electricity: Basic Concepts and Phenomena:701.1 ; Dielectric Materials:708.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2

MATERIALS SCIENCE

2-s2.0-85115892866

Scopus

1.State Key Laboratory for Mechanical Behavior of Materials & School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an,710049,China
2.School of Electronic and Information Engineering,Xi'an Jiaotong University,Xi'an,710049,China
3.State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing,Shapingba District,400044,China
4.Materials Research Institute and Department of Materials Science & Engineering,The Pennsylvania State University,University Park,16802,United States
5.Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China

Si，Mingming,Guo，Jing,Hao，Jianyu,et al. Cold sintered composites consisting of PEEK and metal oxides with improved electrical properties via the hybrid interfaces[J]. COMPOSITES PART B-ENGINEERING,2021,226.

Si，Mingming,Guo，Jing,Hao，Jianyu,Zhao，Xuetong,Randall，Clive A.,&Wang，Hong.(2021).Cold sintered composites consisting of PEEK and metal oxides with improved electrical properties via the hybrid interfaces.COMPOSITES PART B-ENGINEERING,226.

Si，Mingming,et al."Cold sintered composites consisting of PEEK and metal oxides with improved electrical properties via the hybrid interfaces".COMPOSITES PART B-ENGINEERING 226(2021).