NESE Students Publish in Nano Energy, a High-Impact SCI Tier 1 Journal

2021-11-10

The Research Management Center congratulates Cheong Jian Ye and Jason Koay Soon Chye from New Energy Science and Engineering Programme (NESE), XMUM School of Energy and Chemical Engineering, for publishing a research article entitled “Maximizing the Output Power Density Enhancement of Solid Polymer Electrolyte Based-Triboelectric Nanogenerators via Contact Electrification-Induced Ionic Polarization” as co-first authors.

The paper was published in Nano Energy, an SCI-T1 Journal with an impact factor of 17.811. Dr. Gan Wee Chen and Dr. Foo Chuan Yi from NESE are the paper’s corresponding authors.

This research is an international collaborative effort, with significant contributions from Prof. Li Jing and Chen Ruihao (Xiamen University), Assoc. Prof. Kean C. Aw (University of Auckland), Dr. Thamil Selvi Velayutham (University Malaya) as well as Prof. Chen Binghui (Dean, XMUM School of Energy and Chemical Engineering).

Cheong Jian Ye and Jason Koay Soon Chye both graduated from NESE. Jian Ye is currently a research assistant at XMUM, while Jason is a XMUM postgraduate student under the supervision of Dr. Gan Wee Chen.

This manuscript shows that ionic doping in polyvinyl alcohol (PVA) to form solid polymer electrolytes (SPEs) is a reliable and straightforward method to enhance the electrical outputs of triboelectric nanogenerators. The addition of ions into PVA serves to increase its dielectric constant by providing an internal ionic polarization. This internal ionic polarization is generated by the migration of ionic species to opposite interfaces of the PVA film as the contact electrification process creates an external electric field across the film. Moreover, the mechanism of electrical output amplification by internal ionic polarization is elucidated by a modified overlapped electron cloud (OEC) model supported with Kelvin probe force microscope (KPFM) measurements for the very first time. Alongside showing the effectiveness of ionic doping, this work provides a fundamental understanding on the enhancement of contact electrification in Triboelectric nanogenerators (TENGs).

https://www.sciencedirect.com/science/article/abs/pii/S2211285521008673

Figure 1 (a) Migration and accumulation of free ions before and after CE and the formation of internal ionic polarization in PVA-CaCl2 film. (b) Schematic diagrams of the electron clouds and electrons’ energy levels of the two molecules, before and during contact of PVA-CaCl2 and silicone rubber. (c) LEDs arranged in “NESE” (New Energy Science and Engineering) lit up by the TENG of PVA-CaCl2/SR at 50 N.

The authors would like to acknowledge both Xiamen University Malaysia Internal Research Fund and Hengyuan International Industry Fund in making this research successful.


Cheong Jian Ye: “Everything starts with a bright spark from Dr. Gan Wee Chen one year ago. I appreciate the contributions from my fellow co-authors, covering each other’s weaknesses to complete this project. And many thanks to my family and friends for their kind support and understanding. I sincerely hope that a better research environment in the future would encourage more students to participate in research.”

Jason Koay Soon Chye: “This is one of the most rewarding journeys I have had so far at XMUM. I would like to express my utmost gratitude to all parties involved in making this research a success, especially Dr. Gan and Dr. Foo for their invaluable guidance in terms of experimental work as well as writing the manuscript. With this success, I am absolutely looking forward to building on and scaling further heights together with our research team.”

Dr. Foo Chuan Yi received his Bachelor’s degree and Ph.D from Universiti Putra Malaysia (2015 and 2018, respectively). He first joined Xiamen University Malaysia as a postdoc and currently holds the position of Assistant Professor at School of Energy and Chemical Engineering. He is particularly interested in unravelling the potential and workability of advanced manufacturing technology in nanomaterials fabrication, as well as improving the performance of current electrochemical energy storage devices. Dr. Foo is actively recruiting for Master/PhD students to work with him. More details can be obtained from the poster below.

Dr. Gan Wee Chen received his Ph.D. in Advanced Materials from University of Malaya. He is currently working as an Assistant Professor at School of Energy and Chemical Engineering, Xiamen University Malaysia. His research focuses on the functional properties of soft materials including ferroelectric, piezoelectric, triboelectric and composites.

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