Freeze-drying and hot-pressing strategy to embed two-dimensional Ti0.87O2 monolayers in commercial polypropylene films with enhanced dielectric properties
The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to their capability of ultrafast charging-discharging and ultrahigh power density. Nevertheless, their energy density is still limited by the low dielectric constant (≈ 2.2) of the commercial dielectric polypropylene (PP). The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent. In this work, we develop a new strategy including freeze-drying, surface functionalization and hot-pressing to incorporate Ti0.87O2 monolayers in PP film. A series of uniform composited Ti0.87O2@PP film has been successfully fabricated with Ti0.87O2 content range of 0-15 wt%. The maximum dielectric constant of the as-prepared Ti0.87O2@PP film is 3.27 when the Ti0.87O2 content is 9 wt%, which is about 1.5 times higher than that of pure PP. Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application.
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Posted 17 Dec, 2020
On 03 Dec, 2020
On 03 Dec, 2020
On 03 Dec, 2020
On 26 Nov, 2020
Received 14 Nov, 2020
On 03 Nov, 2020
On 01 Nov, 2020
Received 01 Nov, 2020
Invitations sent on 29 Oct, 2020
On 28 Oct, 2020
On 28 Oct, 2020
On 28 Oct, 2020
On 03 Oct, 2020
Received 29 Aug, 2020
Received 27 Aug, 2020
On 18 Aug, 2020
On 18 Aug, 2020
Received 18 Aug, 2020
Invitations sent on 17 Aug, 2020
On 17 Aug, 2020
On 17 Aug, 2020
On 14 Aug, 2020
On 13 Aug, 2020
On 13 Aug, 2020
On 13 Aug, 2020
Freeze-drying and hot-pressing strategy to embed two-dimensional Ti0.87O2 monolayers in commercial polypropylene films with enhanced dielectric properties
Posted 17 Dec, 2020
On 03 Dec, 2020
On 03 Dec, 2020
On 03 Dec, 2020
On 26 Nov, 2020
Received 14 Nov, 2020
On 03 Nov, 2020
On 01 Nov, 2020
Received 01 Nov, 2020
Invitations sent on 29 Oct, 2020
On 28 Oct, 2020
On 28 Oct, 2020
On 28 Oct, 2020
On 03 Oct, 2020
Received 29 Aug, 2020
Received 27 Aug, 2020
On 18 Aug, 2020
On 18 Aug, 2020
Received 18 Aug, 2020
Invitations sent on 17 Aug, 2020
On 17 Aug, 2020
On 17 Aug, 2020
On 14 Aug, 2020
On 13 Aug, 2020
On 13 Aug, 2020
On 13 Aug, 2020
The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to their capability of ultrafast charging-discharging and ultrahigh power density. Nevertheless, their energy density is still limited by the low dielectric constant (≈ 2.2) of the commercial dielectric polypropylene (PP). The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent. In this work, we develop a new strategy including freeze-drying, surface functionalization and hot-pressing to incorporate Ti0.87O2 monolayers in PP film. A series of uniform composited Ti0.87O2@PP film has been successfully fabricated with Ti0.87O2 content range of 0-15 wt%. The maximum dielectric constant of the as-prepared Ti0.87O2@PP film is 3.27 when the Ti0.87O2 content is 9 wt%, which is about 1.5 times higher than that of pure PP. Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application.
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