NANO MATERIALS AND SYSTEMS LABORATORY HTTP://NANO.JEJUNU.AC.KR +82-64-754-3715
NMSL@JNU, aims to develop a technological platform for multidisciplinary research in dif ferent aspects of material science and engineering. Advancing the innovations in nanoscale state-of- the-ar t, the laboratory establishes to be a premier research center in Jeju by providing facilities to design and inspect energy harvesters and storage units. With the mission “sustainable and renewable energy devices for envisioning a clean society,” the group focuses on the comprehensive fields of supercapacitors, nanogenerators, and bio(chemical)-sensors for selfpowered and self-charging systems. We are expedited to explore diverse applications with key features of manufacturing functional nano-confined materials. We believe in nurturing technologies for the future of mankind through our research. We a r e pa s s i ona t e i n academ i c/ i ndu s t r y collaborations, and warmly welcome students in their pursuit of PhD- and graduate-level research. Prof. Kim Sang-Jae ''WE ARE PASSIONATE ABOUT ACADEMIC/INDUSTRY COLLABORATIONS AND HIGHLYWELCOME STUDENTSTO PURSUE PH.D. AND GRADUATE RESEARCH.''
+82-64-754-3715 +82-64-751-3710 D130, Nano Materials & System Lab Engineering Building-4, Jeju National University, Ara-1-dong, Jeju, Jeju-do, Republic of Korea, 690-756 kimsangj@jejunu.ac.kr AREAS OF EXPERTISE • Nanomaterials and systems • Triboelectric/Piezoelectric nanogenerators and hybrid energy systems • Piezotronics and Piezophototronics • Self-powered sensors and Systems • Supercapacitors and self-charging power cell • Hybrid Fuel cells EDUCATIONAL HISTORY • Ph.D., Electrical and Communication Engineering, Tohoku University, Japan, 1997 • M.E., Mechanical Engineering, Pukyong National University, Korea, Korea, 1993 • B.E., Mechanical Engineering, Pukyong National University, Korea, Korea, 1988 PROFESSIONAL HISTORY • 2021 - Fellow, The Korea Academy of Science and Technology (KAST) • 2021- Director / Research Institute of Energy-New-Industry • 2020 - Director / Jeju Energy-New-Industry Advancement IHRC (Brain Korea 21 Four) • 2018 - Director / Self-Powered Sensor and System Lab. (NRF-BRL) • 2014 - Visiting Scholar, Georgia Institute of Technology (Georgia Tech.,), USA • 2005 - Visiting Scholar, University of Cambridge, UK • 2002 - Senior Researcher, Nanomaterial Laboratory, National Institute of Materials Science (NIMS), Japan • 2002 - Professor, Jeju National University, KOREA • 2001 - Guest Associate Professor, New Industry Creation Hatchery Center (NICHe), Tohoku University, Japan • 1999 - Research Fellow, Japan Science, and Technology (JST) Corporation, Japan • 1997 - Lecturer, Research Institute of Electrical Communication (RIEC), Tohoku University, Japan • 1988 - Officer in the Republic of Korea (ROK) Army (ROTC) HONORS AND AWARDS • Prime Minister's Commendation on the 40th Teacher's Day (2021) • The 60th Cultural Award (academic) of Jeju Special Self-Governing Province (2021) • Annual Academic Awards of Reliability, the Korean Society of Mechanical Engineers (KSME), (2021) • Ministerial Citation, Ministry of Science and ICT on the 52nd Science Day (2019) • Annual Academic Awards of Experimental Mechanics, the Korean Society of Mechanical Engineers (KSME), (2019) • Annual Academic Awards of the Society of Micro and Nano Systems (2018) • Awarded the Professor Excellence Award for Ph.D. thesis direction at JNU for 7 times (2012, 2014, 2016, 2017, 2018, 2019, 2020) • Awarded the Professor Excellence Award for Research Achievement at JNU for 3 times (2007, 2013, 2017, 2021) • Awarded the Professor Excellence Award for Capstone Design Direction (Grand Prize) at JNU for 7 times (2007, 2008 (2times), 2009 (2times), and 2010 (1time)). PUBLICATIONS • More than 300 SCI papers & 30 patents (Int. Pat. 10) in the following areas: Nanomaterials and devices. Energy harvesting materials and devices, self-charging supercapacitor power cells, carbon materials and the devices, Josephson devices, Selfpowered storage & nano-bio sensors, THz devices, single-electron tunneling devices, etc • Google Scholar: https//scholar.google.com/citations?user=iA5qoDIAAAAJ&hl=en. • Dr. Parthiban Pazhamalai • Dr. Vijayakumar Elumalai • Dr. Natarajan Subramanian • Dr. Vimal Kumar Mariappan • Dr. Nirmal Prashanth Maria Joseph Raj • Dr. Kousik Bhunua • Dr. Sindhuja Manoharan • Dr. Sharma Kusum • Mr. Abisegapriyan .K.S • Mr. Dhanasekar Kesavan • Mr. Swapnil Shital Nardekar • Mrs. Aparna Sajeev • Mr. Arunprasath Sathyaseelan • Mr. Prasanna APS • Mr. Noor Ul Haq Liyakath Ali • Mr. Keyru Serbara Bejigo • Mr. Vigneshwaran Mohan • Mr. Monunith Anithkumar • Mr. Rajavarman Swaminathan • Mr. Vishwanathan Ravichandran • Mr. Jyotiprakash Das DOCTORAL STUDENTS POST DOCTORAL FELLOWS OUR TEAM RESEARCH PROFESSOR Dr. Karthikeyan Krishnamoorthy
4 JEJU NATIONAL UNIVERSITY RESEARCH FIELD ENERGY HARVESTING ENERGY STORAGE ENERGY CONVERSION • Piezoelectric Nanogenerators • Triboelectric Nanogenerators • Electromagnetic hybrid Nanogenerators • Peizo-Phototronic System • Planer Type Supercapacitors • Cyndrical Supercapacitors • Micro-Supercapacitors • Batteries • Self-Charging Power Systems/Cells • Fuel Cells • Water Electrolyzer
NANO MATERIALS AND SYSTEM LABORATORY 5 ENERGY HARVESTERS PIEZOELECTRIC NANOGENERATOR (PNG) Piezoelectric Nanogenerator (PNG) technology offers a highly reliable, stable, and efficient approach to convert waste mechanical energy produced from society such as low-frequency mechanical vibrations from machines, human body movements, ocean waves, and wind and water flow motions into useful electrical energy. To date, extensive fabrication methods, the growth of various one dimensional (1D) and two dimensional (2D) inorganic piezoelectric structures on plastic substrates, flexible polymer films, and device designs (planar, stretchable, cylindrical, or fiber) were developed to improve PNG technology as a prominent harvesting approach for creating a sustainable independent power source to drive electronic devices consuming low amounts of power. Moreover, the device compatibility, electrical output performance (nW/cm2 to μW/cm2) under various harsh environments, and flexibility issues were optimized taking into account the real-time commercialized PNG product. 01
6 JEJU NATIONAL UNIVERSITY TRIBOELECTRIC NANOGENERATORS (TENG) In the era of digitalization and modernization, a wide range of applications rely on a power source from rechargeable batteries. In the near future, the nano and microsystems will be used for the development of environmental monitoring systems, health monitoring systems, sensors, IoT, etc., where batteries can no longer be active as a power source. To meet all these requirements, self-powered systems were proposed. The triboelectric nanogenerator was developed to harness energy from the environment. The triboelectric nanogenerator (TENG) is a device that converts mechanical energy into electricity. The TENG works through the coupled effect of contact electrification and electrostatic induction when two different materials contact each other. The TENG has the advantage of being cheap, easy to design, and has a high voltage output. Furthermore, a wide range of materials is available for the TENG. Over the past five years, NMSL was extensively involved in the development of self-powered systems based on TENG. The current research on TENG in NMSL involves the development of novel materials for TENG, sensing applications, sustainable and biodegradable devices, blue energy harvesting, wind energy harvesting, hybrid devices, smart toys, etc.
NANO MATERIALS AND SYSTEM LABORATORY 7 ENERGY STORAGE SUPERCAPACITORS (SC) Supercapacitors or super caps (SC) are energy storage devices with highpower density which are considered to support batteries or lead to thedevelopment of next-generation energy storage devices. To improve theperformance of supercapacitors, a focus on electrodes and electrolytes isessential. We work on a wide range of materials from layered, 2D, transition metaloxides and chalcogenides (TMD), metallene, and tailoring heterostructures from lowpower (wearable devices) to high power (electric vehicles) EVs. The study ofcharge storage mechanisms for each unique electrode and electrolyte is exploredthrough SECM (Scanning electrochemical microscope) and EQCM(Electrochemical Quartz Microbalance). 02
8 JEJU NATIONAL UNIVERSITY SELF-CHARGING SUPERCAPACITOR POWER CELL (SCSPC) Energy conversion and storage are the two prime technologies in the field of energy science separated by their own distinct mechanism; however, integrating both in a single device is of great interest in the energy sector. Hence the device developed by integrating the energy conversion and storage in a single cell is termed the Self-Charging Supercapacitor Power Cell (SCSPC). Among various energy conversion systems, bio-mechanical energy conversion is optimum for the design of the SCSPC since it can convert low-frequency/biomechanical energy into electricity whereas, in energy storage, supercapacitors are the favorite due to the rapid charging/discharging and high power compared to that of batteries. Our proposed research idea is to hybridize the energy conversion and storage in a single cell, which generates electricity when the force is applied, and simultaneously the produced electricity is stored in the form of electrochemical energy with improved self-charging efficiency in SCSPC device. The proposed SCSPC paves the way for developing maintenance-free autonomous power systems for the portable energy sector.
NANO MATERIALS AND SYSTEM LABORATORY 9 SELF-POWERED SYSTEMS (SPS) Energy conversion/harvesting and electrochemical storage device are the two critical aspects of providing sustainable power sources for gadgets, but they are two independent units with distinct working mechanism. The concept of integrating energy harvesting and storage devices in a single system without the power management circuit (PMC) and the so-called self-powered system (SPS) is a relatively novel concept developed for maintenance-free smart gadgets. Among the various energy harvesting techniques, triboelectric nanogenerator (TENG) has attracted much attention due to its unique advantages of high energy output (voltage/current), lightweight, ease to construct, and vast material choice. However, TENG delivers a pulsed output, making them unsuitable for driving smart gadgets. Therefore, the output of TENG can be stored in energy storage devices and can be used to drive gadgets for which SPSs need to be formulated. Considering the energy storage devices such as supercapacitors (SCs) are promising candidates due to their merits, such as lightweight, moderate energy/maximal power density, rapid charging/discharging, and long-run cycle life. To reduce the manufacturing cost (in terms of materials) for SPSs, it is desirable to develop unique materials that harvest and store energy. To contribute to this research, we have explored the few bifunctional properties of low dimensional materials (MoS2 quantum sheets, Antimonene, and carbyne) for a zero-maintenance system.
10 JEJU NATIONAL UNIVERSITY RECOVERY OF SPENT LITHIUM-ION BATTERIES The growth in demand for lithium-ion batteries has boosted the hope to overcome the main three challenges of environmental pollution, energy security, and climate change. To date, new electric vehicles have been introduced all over the world as preferable choices due to environmental friendlessness and no fuel requirement. Additionally, consumer electronics from mobile phones to laptops strongly rely on LIBs due to high energy density and long-term cyclability. However, the service life of LIBs is ~3–5 years because of the irreversible nature of (de) lithiation after several charge-discharge cycles that ultimately increase the spent LIBs in the e-waste stream. The LIBs have been used for more than 30 years and accumulated considerable spent LIBs. Therefore, recycling of spent LIBs materials is beneficial for handling the shortage of Li, Co, and graphite resources as well as a crucial aspect of developing green and sustainable energy industries. Currently, scholars are on a way to find efficient and effective recycling technologies for reusing all materials from spent LIBs. We work on different techniques of recycling like mechanical recycling, pyrometallurgy, leaching, and electrodeposition. Recently, NMSL was actively working to recycle battery materials for battery applications and other energy devices.
NANO MATERIALS AND SYSTEM LABORATORY 11 ENERGY CONVERSION FUEL CELLS Fuel cells are clean, reliable, portable, and efficient high energy density device that converts the chemical energy of a fuel directly into electricity by electrochemical reactions. A fuel cell is composed of an anode, cathode, and an electrolyte membrane. We focus on developing novel nanostructured, atomically dispersed, and multimetallic catalysts with well-defined active sites and high selectivity in anode and cathode with low loading of Platinum group metals and developing highly efficient and low-cost hydro-carbon membranes to prevent fuel cross over. 03 Joule, 4(2020)2609-2626
12 JEJU NATIONAL UNIVERSITY PIEZO-PHOTOTRONIC SYSTEMS The piezo-phototronic effect has been a promising approach to modulate the optoelectronic properties for potential applications in flexible smart electronics. Tuning the inner piezoelectric potentials in multifunctional micro and nanomaterials improves the responsivity of optical detection upon the applied strain. With the three-way coupling effect, we construct the selfpowered photodetectors to cultivate bias-free and independent sensing devices and systems. 04
NANO MATERIALS AND SYSTEM LABORATORY 13 MAJOR RESEARCH PROJECTS Accepted cover artwork Awards & Recognition
14 JEJU NATIONAL UNIVERSITY Electrospinning/ Electrospray Plasma Sputtering Chemical Vapor Deposition (CVD) Semiconductor Parameter Analyzer Electric Poling Probe Sonicator LCR Meter SECM Gas Mixing Station Arbin Instrument PE Loop Measurement System Electrochemical Workstation Ball Milling Cylindrical Cell Fabrication RESEARCH FACILITIES
NANO MATERIALS AND SYSTEM LABORATORY 15 NANO MATERIALS AND SYSTEM LABORATORY
NANO MATERIALS AND SYSTEMS LABORATORY
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