PMID- 30463300
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231004
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 8
IP  - 11
DP  - 2018 Nov 20
TI  - Inhibition Effect of Graphene on Space Charge Injection and Accumulation in 
      Low-Density Polyethylene.
LID - 10.3390/nano8110956 [doi]
LID - 956
AB  - Space charge injection and accumulation is attracting much attention in the field 
      of dielectric insulation especially for electronic devices, power equipment and 
      so on. This paper proposes using the inhibition effect of graphene for the 
      injection and accumulation of space charge in low-density polyethylene (LDPE). 
      Scanning electron microscope (SEM) and transmission electron microscopy (TEM) 
      images were employed to observe the dispersion of graphene with a two-dimensional 
      structure in LDPE. The time-dependent space charge dynamic behaviors of 
      graphene/LDPE nanocomposites with the filler content of 0, 0.003, 0.005, 0.007 
      and 0.01 wt % were characterized by the pulsed electro-acoustic (PEA) test at 40, 
      60 and 80  degrees C, and the charge mobility was evaluated by its depolarization 
      processes. The experimental results show that for the undoped LDPE film, large 
      amounts of space charges were injected from the electrodes into samples, 
      especially at 60 and 80  degrees C. The graphene/LDPE nanocomposites with a filler 
      content of 0.005 wt % could markedly suppress the space charge injection and 
      accumulation even at 80  degrees C, which is attributed to the large quantities of 
      graphene-polymer in interface regions. These interface regions introduced numbers 
      of deep trap sites within the forbidden band of nanocomposites, which can reduce 
      the de-trapping rate of charges and suppress the space charge accumulation in the 
      polymer bulks. The graphene/LDPE nanocomposites are suggested for dielectric 
      applications, intending the inhibition of space charge injection and 
      accumulation.
FAU - Li, Zhonglei
AU  - Li Z
AUID- ORCID: 0000-0001-8780-8691
AD  - Key Laboratory of Smart Grid of Education Ministry, School of Electrical and 
      Information Engineering, Tianjin University, Tianjin 300072, China. 
      lizhonglei@tju.edu.cn.
FAU - Su, Jingang
AU  - Su J
AD  - Key Laboratory of Smart Grid of Education Ministry, School of Electrical and 
      Information Engineering, Tianjin University, Tianjin 300072, China. 
      sujingang@tju.edu.cn.
FAU - Du, Boxue
AU  - Du B
AD  - Key Laboratory of Smart Grid of Education Ministry, School of Electrical and 
      Information Engineering, Tianjin University, Tianjin 300072, China. 
      duboxue@tju.edu.cn.
FAU - Hou, Zhaohao
AU  - Hou Z
AUID- ORCID: 0000-0001-7385-8559
AD  - Key Laboratory of Smart Grid of Education Ministry, School of Electrical and 
      Information Engineering, Tianjin University, Tianjin 300072, China. 
      houzhaohao@163.com.
FAU - Han, Chenlei
AU  - Han C
AD  - Key Laboratory of Smart Grid of Education Ministry, School of Electrical and 
      Information Engineering, Tianjin University, Tianjin 300072, China. 
      chenleiyn@163.com.
LA  - eng
GR  - 2016YFB0900701/National Key Research and Development Program of China/
GR  - 51707133 and 51537008/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20181120
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC6266746
OTO - NOTNLM
OT  - charge mobility
OT  - graphene
OT  - interface region
OT  - low-density polyethylene
OT  - nanocomposites
OT  - space charge
COIS- The authors declare no conflict of interest.
EDAT- 2018/11/23 06:00
MHDA- 2018/11/23 06:01
PMCR- 2018/11/20
CRDT- 2018/11/23 06:00
PHST- 2018/10/19 00:00 [received]
PHST- 2018/11/14 00:00 [revised]
PHST- 2018/11/17 00:00 [accepted]
PHST- 2018/11/23 06:00 [entrez]
PHST- 2018/11/23 06:00 [pubmed]
PHST- 2018/11/23 06:01 [medline]
PHST- 2018/11/20 00:00 [pmc-release]
AID - nano8110956 [pii]
AID - nanomaterials-08-00956 [pii]
AID - 10.3390/nano8110956 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2018 Nov 20;8(11):956. doi: 10.3390/nano8110956.