Article
Materials Science, Multidisciplinary
Huiling Guo, Xinyue Yang, Huajun Sun, Liang Li, Xiaofang Liu
Summary: This letter presents a new reusable device made of piezoelectric BaTiO3 nanoparticles embedded in a degradable gelatin matrix. The device shows exceptional flexibility, a high output voltage of 3 V, and a maximum power density of 0.06 μW/cm2. Furthermore, the reconstruction experiment demonstrates the device's remarkable stability and reliability with minimal output voltage attenuation.
Article
Chemistry, Multidisciplinary
Zhuo Wang, Zhirong Liu, Gengrui Zhao, Zichao Zhang, Xinyang Zhao, Xingyi Wan, Yalong Zhang, Zhong Lin Wang, Linlin Li
Summary: In this study, a flexible, stretchable, and highly transparent TENG is designed and fabricated based on an unsymmetrical PAM/BTO composite film. By adjusting the amount and distribution location of BTO, the output performance of the TENG can be improved. The TENG also functions as a high-sensitivity pressure sensor that can distinguish a spectrum of forces at the low frequency.
Article
Nanoscience & Nanotechnology
Huiling Guo, Liang Li, Fang Wang, Sang-Woo Kim, Huajun Sun
Summary: The conversion of ecofriendly waste energy into usable electrical energy is of great importance for energy harvesting technologies. Piezoelectric nanogenerators based on organic/inorganic hybrid materials, due to their high piezoelectric coefficient and good mechanical flexibility, have become a key promising technology. However, the negative piezoelectric effect of the polymer component severely undermines the overall piezoelectricity of composite devices, compromising the output performance of PVDF-based piezoelectric hybrid nanogenerators. By using a two-step poling schedule, we have successfully addressed this issue and achieved an optimized nanogenerator with high piezoelectric coefficient, excellent output performance, and remarkable stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Huiling Guo, Liang Li, Fang Wang, Sang-Woo Kim, Huajun Sun
Summary: This study presents a feasible strategy for enhancing the effective output capability of composite nanogenerator technologies. By using a two-step poling schedule to align the dipoles of organic and inorganic components, the negative piezoelectric effect of the polymer component is overcome. The optimized nanogenerator exhibits high piezoelectric coefficient, excellent output performance, and stability. This strategy is also applicable to improve the piezoelectricity of other organic/inorganic-hybrid-based nanogenerators.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Abu Musa Abdullah, Muhtasim Ul Karim Sadaf, Farzana Tasnim, Horacio Vasquez, Karen Lozano, M. Jasim Uddin
Summary: Research has been conducted on the development of KNN-based energy films for energy harvesting and sensing applications, utilizing triboelectric and piezoelectric mechanisms to achieve high output voltage and current. The film is suitable for various types of deformations and can be integrated into multifunctional devices.
Article
Materials Science, Multidisciplinary
Yuan Xue, Wuwei Feng, Bin He, Shuo Liu
Summary: In this article, a PENG device based on BaTiO3-Bi/polyimide composite thin films was prepared and studied. The device exhibited excellent piezoelectric properties and power generation performance, making it suitable for capturing mechanical energy and serving as a sensor.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Aditi Sahoo, Tufan Paul, Ankan Nath, Soumen Maiti, Prabhat Kumar, Prasenjit Ghosh, Rupak Banerjee
Summary: Lead-free halide perovskites, such as Cs3Bi2Br9, have become popular in photovoltaic and energy harvesting applications due to their excellent optical and electrical properties and minimal toxicity. In this study, we synthesized composite films of Cs3Bi2Br9 perovskite embedded in the PVDF matrix and investigated their piezoelectric energy harvesting capabilities. The composite film with 4 wt% perovskite showed the highest activation of the electroactive β-phase of PVDF, as well as the best energy storage density and output voltage when used in a nanogenerator.
Article
Engineering, Electrical & Electronic
Zikui Bai, Zhiyuan Yao, Guangmin Wu, Kaiwu Liu, Dezhan Ye, Yongzhen Tao, Shili Xiao, Dongzhi Chen, Zhongmin Deng, Jie Xu, Yinshan Zhou, Shijun Wei, Xianze Yin
Summary: In this study, Polyurethane (PU) is introduced into PVDF nanofibers to obtain a blend nanofiber film with elasticity and microstructure stability. The tensile and compression moduli of the nanofiber films are effectively controlled by changing the mass ratio of PU to PVDF. The blend nanofiber film shows stable piezoelectric response and has potential applications in mechanical energy harvesting from gas or liquid pressure fluctuation.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Nanoscience & Nanotechnology
Qian Wang, Bingang Xu, Junxian Huang, Di Tan
Summary: In this study, silk-TENG devices were fabricated by retaining the sericin (SS) component, resulting in improved output performance. These devices can scavenge waste energy from human motions to power small electronic devices and monitor human movements.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Jia-Han Zhang, Zhou Zhou, Jiean Li, Bingzhong Shen, Tangsong Zhu, Xingxun Gao, Ruowen Tao, Xin Guo, Xiaopeng Hu, Yi Shi, Lijia Pan
Summary: In this study, a triboelectric-piezoelectric hybrid nanogenerator based on a nanoporous film of poly(vinylidene fluoride)/BaTiO3 composite nanofibers was reported, showing enhanced performance through ternary coupling effect. The transfer charge density of the hybrid nanogenerator was 2.12 times higher than the sum value of the pristine nanoporous piezoelectric and triboelectric nanogenerators, reaching 105.6 mu Cm-2.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Analytical
Yerkezhan Amangeldinova, Dimaral Aben, Xiaoting Ma, Heesang Ahn, Kyujung Kim, Dong-Myeong Shin, Yoon-Hwae Hwang
Summary: Structural optimizations of the piezoelectric layer in nanogenerators are predicted to enhance output performance, with lower dielectric constants improving the electrical output voltage. This study demonstrates an 11.3-fold enhancement in output voltage by lowering the dielectric constant of the piezoelectric layer in the nanogenerator.
Review
Green & Sustainable Science & Technology
Quoc Hai Nguyen, Qui Thanh Hoai Ta, Ngo Tran
Summary: This review explores the application of different smart materials as TENG and PENG in converting mechanical or vibrational energy into electrical energy for various purposes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Yong-Ji Gong, Zhi-Gang Li, Haisheng Chen, Tian-Meng Guo, Fei-Fei Gao, Gui-Jing Chen, Yang Zhang, Yu-Meng You, Wei Li, Min He, Xian-He Bu, Jie Yu
Summary: A high piezoelectric TMCM-CdCl3/PDMS composite material was synthesized, which effectively absorbs strain and converts it into electric polarization for energy harvesting and sensing human motion for self-powered flexible and wearable devices.
Article
Chemistry, Physical
Sk Md Ali Zaker Shawon, Zaida D. Carballo, Valeria Suarez Vega, Chen Lin, Muhammad Sufian Rafaqut, Andrew Xu Sun, J. James Li, M. Jasim Uddin
Summary: The study presents an aluminum-doped zinc stannate piezoelectric nanogenerator with high electrical output, achieved through a low-temperature solution method; 2 wt% aluminum-doped ZnSnO3 showed the highest electrical output in terms of open circuit voltages and short circuit current; The device can function as an energy harvester and wireless human motion sensor.
Article
Thermodynamics
Hongxiang Zou, Meng Li, Linchuan Zhao, Xinwen Liao, Qiuhua Gao, Ge Yan, Ronghua Du, Kexiang Wei, Wenming Zhang
Summary: This study proposes a human-friendly biomechanical energy harvester that utilizes a cooperative compliant traction mechanism. The harvester is driven by the knee joint through a compliant medium without any mechanical components, adding no weight or restraint to the knee joint. The harvester works in collaboration with the user's walking/running, collecting energy when the user does negative work. The use of frequency up-conversion and mechanical rectification improves the efficiency of electromechanical conversion. The prototype of this HF-BEH can generate power with little impact on mobility, and it has been shown to enable self-powered emergency call, positioning and tracking, health monitoring, and physical therapy. Human-vehicle interaction through self-powered wireless sensing based on HF-BEH has also been demonstrated to improve the safety of individuals with limited responsiveness and mobility in traffic environments.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
Kousik Bhunia, Santimoy Khilari, Moumita Chandra, Debabrata Pradhan, Sang-Jae Kim
Summary: In this study, nickel oxide nanoparticles/g-C3N4 nanocomposites were synthesized using a facile impregnation method, and they exhibited excellent oxygen evolution reaction (OER) activity. The optimal loading of NiO, which was approximately 30%, achieved high OER performance and durability at a 360 mV overpotential.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Monunith Anithkumar, Asokan Poorani Sathya Prasanna, Nagamalleswara Rao Alluri, Sang-Jae Kim
Summary: Novel hybrid nanogenerators (HNG) with multifunctional materials are gaining immense interest due to their high electrical output and broad applications in the electronic industry. The intrinsic hybridization of single electrode triboelectric (SE-TE) and piezoelectric (PE) nanogenerators (NGs), known as double layered (DL)-HNG, can eliminate the real-time electrical grounding issues and produce high output. The DL-HNG, made of Cu2O-doped 0.3Ba(0.7)Ca(0.3)TiO(3)-0.7BaSn(0.12)Ti(0.88)O(3) nanoparticles (Cu2O-BCST NPs) and polydimethylsiloxane polymer, can be scaled up to work as a flexible self-powered trackpad or touch sensor.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Roshan M. Bhattarai, Kisan Chhetri, Nghia Le, Debendra Acharya, Shirjana Saud, Mai Cao Hoang Phuong Lan Nguyen, Sang Jae Kim, Young Sun Mok
Summary: In this study, Ni-Co-C-N composite alloys (NiCCZ) derived from metal-organic framework (MOF) were embedded inside carbon cloth (CC) strands to achieve ultrastable energy storage and conversion applications. The NiCCZ was then modified with oxygen to create a flower-like metal hydroxysulfide structure (NiCCZOS), which demonstrated excellent capacity as a supercapacitor electrode. When paired with nitrogen-rich activated carbon, the resulting asymmetric supercapacitor device showed impressive capacity retention and energy density. Furthermore, the same electrode exhibited excellent performance as a bifunctional water-splitting electrocatalyst. This unique metal chalcogenide composite electrode/substrate configuration is proposed as a highly stable material for flexible energy storage and conversion applications.
Article
Engineering, Environmental
Kousik Bhunia, Elumalai Vijayakumar, Nirmal Prashanth Maria Joseph Raj, Keyru Serbara Bejigo, Dhanasekar Kesavan, Sang -Jae Kim
Summary: The present study demonstrates the effectiveness of a noble metal-free cobalt nanoparticle-integrated nitrogen-doped carbon nanotubes catalyst for oxygen reduction reaction in Direct Methanol Fuel Cells (DMFCs). The catalyst showed superior activity and performance compared to conventional platinum catalysts. The study also showcased the applicability of the catalyst-integrated DMFC in powering portable electronics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sugato Hajra, Swati Panda, Hamideh Khanberh, Venkateswaran Vivekananthan, Elham Chamanehpour, Yogendra Kumar Mishra, Hoe Joon Kim
Summary: Triboelectric nanogenerators (TENGs) have the potential to revolutionize self-powered robotic systems by offering self-powered actuation, grasping, and sensing capabilities. TENGs directly convert mechanical energy into electrical energy, powering small electronics. This review explores the mechanisms and modes of TENGs for robotics actuation and sensing applications, discussing improvements in efficiency and reliability, grippers with controlled gripping power and self-calibration abilities, pressure sensors incorporated into robotic grippers, and the integration of self-powered robotic systems with human-machine interaction (HMI) technologies.
Article
Energy & Fuels
Jaykishon Swain, Sugato Hajra, Niharika Das, Pankaj Parhi, Swati Panda, Anulipsa Priyadarshini, Jagannath Panda, Alok Kumar Sahu, Perumal Alagarsamy, Venkateswaran Vivekananthan, Hoe Joon Kim, Rojalin Sahu
Summary: The spent catalysts from chemical manufacturing, as hazardous waste, can cause pollution. However, through chemical treatment, valuable salts and metals can be extracted from these catalysts, promoting recycling and reducing waste. This study focuses on extracting MoO3 from spent petroleum catalysts and using it to create Mo-metal organic framework (MOF) particles for triboelectric nanogenerator applications. The Mo-MOF/Kapton-based TENG generates high voltage, current, and charge, enabling it to power electronic devices and monitor repetitive motions for sports or healthcare applications.
Article
Chemistry, Multidisciplinary
Swapnil Shital Nardekar, Sang-Jae Kim
Summary: Soft robotics has advanced rapidly in recent years, creating new possibilities for industrial and biomedical applications. However, its usage has been restricted to locomotion and actuation due to the lack of a suitable charge storage system for supporting the robot's sensory network in challenging conditions. This study presents an ultra-flexible, lightweight, and wirelessly rechargeable micro-supercapacitor as an onboard power source for miniaturized soft robots, enabling various sensory functionalities.
Article
Engineering, Electrical & Electronic
Alekhika Tripathy, Nirmal Prashanth Maria Joseph Raj, Sang Jae Kim, Ananthakumar Ramadoss
Summary: Ecofriendly, reliable, and high-performance piezoelectric materials, such as potassium sodium niobate (KNN), are being studied as alternatives to fossil fuel energy to resolve environmental issues. In this study, the piezoelectric performance of KNN incorporated in poly(vinylidene fluoride) (PVDF) and its copolymers, PVDF-TrFE and PVDF-HFP, was compared. The results showed that the nanocomposite film with 8 wt % KNN filler in PVDF-TrFE exhibited the highest piezoelectric performance and voltage output among the different composites.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Energy & Fuels
Charanya Sukumaran, Sayyid Abdul Basith, Venkateswaran Vivekananthan, Sang-Jae Kim, Arunkumar Chandrasekhar
Summary: This article presents groundbreaking research on wearable triboelectric nanogenerators (TENGs) and their applications in flexible electronics and wearable devices. It introduces a novel silicone elastomer-based TENG and showcases innovative applications such as wearable sensors, touch keypads, and emergency alarm systems. This research highlights the potential of TENGs in energy harvesting, human-machine interfaces, and personal safety.
Article
Chemistry, Physical
Zahir Abbas, Monunith Anithkumar, Asokan Poorani Sathya Prasanna, Nissar Hussain, Sang-Jae Kim, Shaikh M. Mobin
Summary: Enhancing the output performance of triboelectric nanogenerators (TENGs) can be achieved by designing materials with high triboelectric properties as active fillers. In this study, a Cd-MOF was synthesized as a filler to improve the performance of the TENG device. The Cd-MOF was incorporated with PDMS to construct a MOF/PDMS film and used for TENG study. The MOF-TENG device generated a maximum output power density of 0.124 W m-2 and was used to control mouse movement via finger movements.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Biomaterials
Swati Panda, Sugato Hajra, Hang Gyeom Kim, Haejin Jeong, P. G. R. Achary, Seonki Hong, Bhaskar Dudem, S. Ravi P. Silva, Venkateswaran Vivekananthan, Hoe Joon Kim
Summary: This article introduces a biodegradable sensor system based on TENG, which can detect biological elements in remote areas. The sensor detects E. coli using a carbohydrate-protein interaction mechanism and monitors the output current to determine the bacterial concentration. The study also tests the degradability and long-term reliability of the sensor. Overall, this article is rated 8 out of 10.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Physical
Arunprasath Sathyaseelan, Karthikeyan Krishnamoorthy, Parthiban Pazhamalai, Noor Ul Haq Liyakath Ali, Sang-Jae Kim
Summary: This study demonstrates the use of liquid phase exfoliated 2D boron nanosheets as an efficient non-noble electrocatalyst in water electrolysis, with enhanced electrocatalytic activity and stability. Physico-chemical studies show that the exfoliation of boron nanosheets increases their surface area and edge interfaces, leading to improved electrocatalytic performance. The study also highlights the advantages of hybrid electrolyzers, achieving more efficient electrosynthesis of formate and hydrogen by reducing the voltage.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Aparna Sajeev, Karthikeyan Krishnamoorthy, Parthiban Pazhamalai, Kousik Bhunia, Arunprasath Sathyaseelan, Sang-Jae Kim
Summary: Efficient water-splitting devices are crucial for sustainable hydrogen production and achieving carbon neutrality. This study investigates the use of tin as a bifunctional catalyst in a hybrid water electrolyzer, replacing the sluggish oxygen evolution reaction with the more feasible methanol oxidation reaction. The results show that the 3D Sn/NF catalyst exhibits excellent performance in hydrogen evolution, oxygen evolution, and methanol oxidation, paving the way for the development of monometallic catalysts for future electrochemical energy conversion devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Arunprasath Sathyaseelan, Karthikeyan Krishnamoorthy, Parthiban Pazhamalai, Noor Ul Haq Liyakath Ali, Sang-Jae Kim
Summary: This paper investigates the use of liquid phase exfoliated 2D boron nanosheets as efficient non-noble electrocatalysts for water electrolyzers. The physical and chemical studies show that the exfoliation of boron sheets increases surface and edge interfaces, enhancing the electrocatalytic activity for hydrogen evolution reaction, oxygen evolution reaction and methanol oxidation reaction. In a hybrid water electrolyzer, the use of 2D boron nanosheets leads to lower voltage and efficient green hydrogen production.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
