Graphene-Based Micro-Supercapacitors for On-Chip Energy Storage
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Abstract: Micro-supercapacitors (MSCs) are important on-chip micro-power sources for miniaturized integrated electronic devices. Using 2D atomically thin graphene, new designs for thin-film planar MSCs with outstanding performance have become possible, taking full advantage of the atomic layer thicknesses and flat morphology of graphene. In this talk, I will present our recent advances on the reasonable fabrication and construction of high-performance MSCs based on graphene and 2D materials. First, we demonstrate graphene-based flexible and high-power MSCs through micropatterning of methane-plasma or photochemically reduced graphene films, allowing for operations at ultrahigh rate up to 2000 V s‑1. Second, we describe large-area, highly uniform, ultrathin, heteroatom (N, B, S)-doped graphene films for MSCs, providing enhanced volumetric capacitance of 400~600 F cm‑3. Third, we show the universal construction of graphene compact films (polyaniline/polypyrrole nanosheets, activated graphene, thiophene nanosheets, phosphorene, MnO2 nanosheets) for high-energy MSCs, up to 46 mWh cm−3. Finally, sandwich-like planar MSCs with symmetric and asymmetric configuration will be presented. Therefore, these MSCs have great promise as micropower sources for direct integration of future portable, wearable, and implantable microelectronics.
His research interest involves graphene and 2D materials for electrochemical energy storage and conversion devices, including supercapacitors, battery, flexible and micro-scale energy storage, and fuel cell. He has published more than 50 articles (IF>10, 33 papers) in Adv. Mater., Nat. Commun., J. Am. Chem. Soc., ACS Nano, Adv. Funct. Mater., Adv. Energy Mater., Nano Energy etc, which have been cited >12000 times, average citations per item is >200 times, H-index=31. 22 papers are ESI highly-cited papers, and his highest cited paper with more than 1400 times has been selected as “Top 10 Highly-Cited Paper in China Over the Past Ten Years (2006-2016)”. Additionally, he has authored 2 book chapters, 19 patents, and presented 30+ Plenary, Keynote, Invited and Oral talks in the international conferences.