TY - JOUR
T1 - Recent development of high energy density polymers for dielectric capacitors
AU - Wang, Yong
AU - Zhou, Xin
AU - Chen, Qin
AU - Chu, Baojin
AU - Zhang, Qiming
N1 - Funding Information:
The authors greatly appreciate the financial support of these works by ONR through Grant No. N00014-05-1-0541 (MURI) and Grant No. N00014-08-1-0229.
PY - 2010/8
Y1 - 2010/8
N2 - High energy density dielectric materials are desirable for capacitors and other energy storage systems. Two approaches were developed to achieve high electric energy density: explore high dielectric constant (K) materials and improve high operation electric field. Relaxor ferroelectric polyvinylidene fluoride (PVDF) based copolymers P(VDF-HFP), P(VDF-CTFE) and terpolymer P(VDF-TrFE-CFE) have been proven to possess high electric energy density. An energy density of over 25 J/cm3 has been achieved in PVDF-based polymers, which represents the state of art in high energy density polymers. Aromatic polyurea thin films were developed through vapor phase deposition, exhibiting relatively high dielectric constant, low loss, high breakdown field (>800 MV/m) and consequently high energy density (>12 J/cm3). Its thermal stability up to 200°C and high charge-discharge efficiency (>90%) make it attractive for high temperature capacitors. Investigation through SEM, AFM and other experiments indicated unbalanced aromatic polyurea could exhibit apparent high-K (∼15) due to the non-uniformity of film thickness and surface morphology. This article reviews the recent development of these high performance polymers.
AB - High energy density dielectric materials are desirable for capacitors and other energy storage systems. Two approaches were developed to achieve high electric energy density: explore high dielectric constant (K) materials and improve high operation electric field. Relaxor ferroelectric polyvinylidene fluoride (PVDF) based copolymers P(VDF-HFP), P(VDF-CTFE) and terpolymer P(VDF-TrFE-CFE) have been proven to possess high electric energy density. An energy density of over 25 J/cm3 has been achieved in PVDF-based polymers, which represents the state of art in high energy density polymers. Aromatic polyurea thin films were developed through vapor phase deposition, exhibiting relatively high dielectric constant, low loss, high breakdown field (>800 MV/m) and consequently high energy density (>12 J/cm3). Its thermal stability up to 200°C and high charge-discharge efficiency (>90%) make it attractive for high temperature capacitors. Investigation through SEM, AFM and other experiments indicated unbalanced aromatic polyurea could exhibit apparent high-K (∼15) due to the non-uniformity of film thickness and surface morphology. This article reviews the recent development of these high performance polymers.
UR - http://www.scopus.com/inward/record.url?scp=77955578250&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955578250&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2010.5539672
DO - 10.1109/TDEI.2010.5539672
M3 - Article
AN - SCOPUS:77955578250
SN - 1070-9878
VL - 17
SP - 1036
EP - 1042
JO - IEEE Transactions on Electrical Insulation
JF - IEEE Transactions on Electrical Insulation
IS - 4
M1 - 5539672
ER -