Synergy of micro-/mesoscopic interfaces in multilayered polymer nanocomposites induces ultrahigh energy density for capacitive energy storage

Jianyong Jiang, Zhonghui Shen, Jianfeng Qian, Zhenkang Dan, Mengfan Guo, Yue He, Yuanhua Lin, Ce Wen Nan, Longqing Chen, Yang Shen

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

High-energy-density dielectric materials are highly desirable for the miniaturization and integration of modern electronics and power modules for applications in electrical power, communication, medical and defense systems. However, the conventional polymer nanocomposites with nanofillers randomly dispersed exhibit a limited energy storage performance (e.g. discharged energy density <15 J/cm3 and efficiency <70%). Here, we demonstrate the multilayer structure as an effective route to polymer nanocomposites that concurrently have ultrahigh discharge energy density and high efficiency. Compared to the random-dispersed nanocomposites, the rationally designed multilayered polymer nanocomposites are capable of integrating the suppressed effects of dielectric/electrode and dielectric/dielectric interfaces on charge injection and migration to remarkably enhance the breakdown strength and are expected to deliver an unprecedentedly high energy density of ∼35.4 J/cm3 (an enhancement of ∼1100% over the bench-mark biaxially-oriented polypropylene). This work provides insight into the design and fabrication of polymer nanocomposite with high energy density and discharge efficiency for capacitive energy storage applications.

Original languageEnglish (US)
Pages (from-to)220-229
Number of pages10
JournalNano Energy
Volume62
DOIs
StatePublished - Aug 2019

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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