Article
Nanoscience & Nanotechnology
Lu Peng, Jiarong Niu, Peng Jiang, Xing Han, Xin Jin, Xing Liu, Wenyu Wang, Chenhong Lang, Hongxia Wang, Tong Lin
Summary: This study demonstrates a novel device structure with tunable acoustoelectric bandwidth based on oriented electrospun polyacrylonitrile (PAN) nanofibers and slit electrodes. The devices with perpendicular arrangement of PAN nanofibers to the slits have wider bandwidths than their parallel counterparts and randomly oriented nanofibers. The slit aspect ratio affects the electrical output, but the slit number does not change the bandwidth characteristic. The oriented nanofiber membranes and slit electrodes contribute to the frequency response tuning.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Physical
Junzhu Tao, Yifan Wang, Xuekai Zheng, Chao Zhao, Xin Jin, Wenyu Wang, Tong Lin
Summary: This paper discusses the importance of piezoelectric polymer materials in small kinetic energy harvesting and explores methods to improve their high-temperature piezoelectric properties. It also highlights the potential and future directions of these materials in various applications.
Article
Materials Science, Composites
Andong Zhang, Heping Li, Aohua Zhang, Jun Zhou, Youwei Yan
Summary: The PSA/PAN composite nanofibers exhibit excellent thermal stability and high filtration efficiency, with a removal efficiency of over 99.7% for PM2.5, even after exposure to high temperatures.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Composites
Huilan Li, Wenying Xue, Wangcong Xu, Lina Wang, Tianxi Liu
Summary: In this study, flexible and freestanding SPAN nanofiber cathodes were prepared via the electrospinning technique followed by a sulfurization process. The effect of synthesis temperatures on microstructure and electrochemical performance of SPAN was systematically investigated. The SPAN nanofibers prepared at 500 degrees Celsius exhibited the best cell performance with high reversible capacity and low fading rate after 200 cycles.
COMPOSITES COMMUNICATIONS
(2021)
Article
Engineering, Multidisciplinary
Yi Xin, Hongyan Liu, Meng Cui, Xuefeng Song, Yuhang Wang, Tingting Lin, Lingling Wang, Gang Wang
Summary: In this study, pure phase BS-PT nanofibers were successfully synthesized by optimizing the concentration of the electrospinning additive and the sintering temperature. The BS-PT nanofiber piezoelectric sensor showed a stable sensitivity above 4 V/N in the temperature range of 60-200 degrees C and at frequencies of 10-40 Hz. Furthermore, the sensor exhibited a nearly linear output voltage with increasing excitation pressure in the range of 0.07 N to 0.55 N at temperatures of 160-260 degrees C, and the sensitivity at 220 degrees C was still higher than 5.4 V/N. These findings suggest that the BS-PT nanofiber piezoelectric sensor holds great promise for high-temperature pressure and vibration measurements.
Article
Materials Science, Multidisciplinary
Lu Peng, Xin Jin, Jiarong Niu, Wenyu Wang, Hongxia Wang, Hao Shao, Chenhong Lang, Tong Lin
Summary: This paper discusses the novel ability of electrospun PAN nanofibers to accurately detect low-to-middle frequency sound, showing high sensitivity and fidelity. The PAN sensor device has a much wider response bandwidth, larger sensitivity, and higher fidelity compared to a similar sensor made with electrospun PVDF nanofibers. The high piezoelectricity and rigidity of PAN nanofibers contribute to their excellent detection accuracy by facilitating deformation recovery and reducing interference from harmonics.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Polymer Science
Andreas Hoffmann, Alexander J. C. Kuehne
Summary: In this study, the high-throughput fabrication of PAN nanofibers as a nonwoven material using rotational, air pressure, and electrostatic forces was investigated. The influence of these forces on fiber diameter, morphology, and bundling of carbon-precursor PAN fibers was studied, along with the impact of radial forces and collector-facing forces on fiber deposition uniformity. Additionally, the PAN nanofibers were successfully converted to carbon nonwovens through thermal treatment.
Article
Polymer Science
Wanlian Tang, Ziyin Chen, Xiaohua Zuo, Guanming Yuan, Zhengwei Cui, Zhijun Dong, Ye Cong, Jiang Zhang, Xuanke Li
Summary: In this study, PAN-based composite nanofibers incorporated with high-percentage inexpensive pitch were successfully prepared using a simple electrospinning technique. Different preoxidation strategies were systematically investigated for their effects on the morphology, composition, and structure of the composite nanofibers. The study found that incorporating graphitizable NP enhanced the crystallinity, crystalline order, and electrical conduction of the composite nanofibers, paving the road for the facile preparation of cost-competitive carbon nanofibers with controllable morphology, structure, and properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Hao Shao, Hongxia Wang, Yuying Cao, Xiang Ding, Jian Fang, Wenyu Wang, Xin Jin, Lu Peng, Daquan Zhang, Tong Lin
Summary: Electrospun PAN nanofibers demonstrate remarkable acoustic sensing performance, with high accuracy in distinguishing various sounds, including musical instruments and human voices. The sensor is stable and reliable for long-term sound detection applications.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaoyan Han, Zongying Xiao, Kai Chen, Qi Lai, Yingkui Yang
Summary: Robust hierarchical hybrids containing flower-like oxidized-polyacrylonitrile were synthesized by in situ polymerization of acrylonitrile and graphene oxide in combination with thermal treatment. The hybrids, which synergistically couple conductive graphene and a multi-electron redox-active matrix, exhibit large reversible capacity, high rate capability, and long cycle life, making them suitable for cost-efficient and sustainable batteries.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Huilan Li, Wenying Xue, Lina Wang, Tianxi Liu
Summary: The study introduces soluble lithium polysulfide of Li2S8 as a redox mediator to enhance the reversible oxidation efficiency of a freestanding fibrous SPAN cathode, improving the initial Coulombic efficiency and performance of Li-S batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wenyu Wang, Yide Zheng, Yue Sun, Xin Jin, Jiarong Niu, Maoyun Cheng, Hongxia Wang, Hao Shao, Tong Lin
Summary: Polymer membranes treated with heat stabilization can convert mechanical energy into electricity at high temperatures, generating high power densities. The energy harvested can power commercial LEDs and be stored in capacitors for future use.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Polymer Science
Brennan F. Coleman, Reva M. Street, Thomas Fitzsimons, Caroline L. Schauer
Summary: Electrospinning is a common method for producing polymer nanofibers, but it has challenges. Mechanical drawing of nanofibers is easier, but scaling up is limited. The new Touchspinner device can continuously cold-draw nanofibers, with efficiency comparable to electrospinning but fewer drawbacks. Controllable parameters have been found to affect the size of the nanofibers, with optimal parameters resulting in highly aligned nanofibers.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Thermodynamics
Geng Chen, Jingyuan Xu
Summary: In this study, a small-scale piezoelectric-driven thermoacoustic cooler (TAC) is proposed for electronic cooling. Theoretical models are established to predict the acoustical and thermal characteristics of the TAC. Results show that the piezoelectric-driven TAC achieves high pressure amplitudes and a maximum temperature difference of 4.4 degrees C. This work demonstrates the potential of TACs in thermal management of miniature electronics.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Huihun Kim, Changhyeon Kim, Milan K. Sadan, Hyewon Yeo, Kwon-Koo Cho, Ki-Won Kim, Jou-Hyeon Ahn, Hyo-Jun Ahn
Summary: The researchers fabricated bulk-type SPAN disk cathodes with high specific capacity and practical energy density using a simple heating process. By improving the pore structure and adding multi-walled carbon nanotubes, they enhanced the electrode's cyclability. This strategy presents a potential candidate for high practical energy density Li/S batteries.
Article
Chemistry, Physical
Sirinya Ukasi, Paritta Jutapukti, Chiranicha Ninthub, Nattapong Pinpru, Phakkhananan Pakawanit, Wanwilai Vittayakorn, Satana Pongampai, Naratip Vittayakorn, Thitirat Charoonsuk
Summary: This study explores the enhancement of electrical output of flexible hybrid piezoelectric-triboelectric nanogenerators by incorporating gamma-glycine into fully organic composites. The research demonstrates the importance of optimized concentrations of gamma-glycine and chitosan in achieving superior performance. The study identifies the critical content of gamma-glycine that leads to the highest output signal, and provides theoretical explanations for this observation.
Article
Chemistry, Physical
Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee, Dongwhi Choi
Summary: In this study, a portable energy harvester (STEP) was proposed to drive various functional LEDs using biomechanical energy. The roles and functionalities of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) in the hybrid energy harvester were experimentally demonstrated, and the necessity of hybridization for LED-involved devices was described. The STEP showed promising potential as an effective energy supply strategy for various functional LEDs in related industries.
Article
Chemistry, Physical
Dae Sol Kong, Kyung Hoon Kim, Ying Chieh Hu, Jong Hun Kim, Inseo Kim, Jeongwan Lee, Joonhyuk Lee, Won Hyuk Shon, Hanjin Yoo, Chul-Un Ro, Seungsu Lee, Hyoungjeen Jeen, Minbaek Lee, Minseok Choi, Jong Hoon Jung
Summary: With the rapid development of the Internet of Things and artificial intelligence, smart home has emerged to fulfill the security, convenience, and energy-saving issues of modern life. A flexoelectric mica crystal is used to augment the finger touch-driven triboelectric output for operating a wireless and multichannel smart home controller. This work provides important ingredients for enhancing triboelectric output and realizing a convenient, multifunctional, cost-effective, and adaptable smart home control system without batteries.
Article
Chemistry, Physical
Yi Han, Fang Wu, Xiaozhen Du, Zihao Li, Haixiang Chen, Dongxing Guo, Junlei Wang, Hong Yu
Summary: This paper presents a novel type of triboelectric nanogenerator that utilizes wind energy, with a Y-type bluff body to enhance vibration and output power. The application of this generator successfully provides power for a wireless temperature and humidity sensor.
Article
Chemistry, Physical
Wen Zhang, Fangyuan Cheng, Miao Chang, Yue Xu, Yuyu Li, Shixiong Sun, Liang Wang, Leimin Xu, Qing Li, Chun Fang, Meng Wang, Yuhao Lu, Jiantao Han, Yunhui Huang
Summary: This study successfully induced the formation of a uniform and robust CEI by constructing ZrO2 nano-rivets on the surface of LCO, stabilizing the surface of high-voltage LCO and facilitating lithium-ion diffusion.
Article
Chemistry, Physical
Karl P. Olson, Laurence D. Marks
Summary: This paper investigates the role of contacting shapes in triboelectricity and provides scaling rules for designing energy harvesting devices.
Article
Chemistry, Physical
Jong-An Choi, Jingu Jeong, Mingyu Kang, Hee-Jin Ko, Taehoon Kim, Keun Park, Jongbaeg Kim, Soonjae Pyo
Summary: Wind-driven triboelectric nanogenerators (WTENGs) are a promising emerging technology for sustainable wind energy harvesting, offering high output performance, lightweight design, and compact dimensions. This study introduces an innovative WTENG design that leverages a rolling-based mechanism to achieve efficient omnidirectional wind energy harvesting.
Article
Chemistry, Physical
Liwei Dong, Qian Tang, Chaoyang Zhao, Guobiao Hu, Shuai Qu, Zicheng Liu, Yaowen Yang
Summary: This paper proposes a novel hybrid scheme for flag-type nanogenerators (FNGs) that enhances their performance and broadens their operational wind speed ranges by harnessing the synergistic potential of two aerodynamic behaviors. The proposed flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) integrates flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). The FTPNG achieves significant power generation and a broad wind speed range, surpassing other FNGs, making it suitable for various self-powered systems and Internet of Things applications.
Review
Chemistry, Physical
Yunmeng Li, Xin Liu, Zewei Ren, Jianjun Luo, Chi Zhang, Changyong (Chase) Cao, Hua Yuan, Yaokun Pang
Summary: The demand for green and eco-friendly materials is growing due to increasing environmental concerns related to traditional petroleum-based products. Marine biomaterials have emerged as a promising alternative, thanks to their abundant availability, biocompatibility, biodegradability, and low toxicity. In this review, we discuss the development and applications of triboelectric nanogenerators (TENGs) based on marine biomaterials. The operational modes, foundational principles, intrinsic qualities, and advantages of marine biomaterials commonly used in TENG designs are highlighted. Approaches to enhance the efficacy of TENGs derived from marine biomaterials are also discussed, along with documented applications from existing literature. Furthermore, the existing challenges and future directions in marine biomaterial-inspired TENGs are explored.
Article
Chemistry, Physical
Matthew P. Wells, Adam J. Lovett, Yizhi Zhang, Zhongxia Shang, Kosova Kreka, Babak Bakhit, Haiyan Wang, Albert Tarancon, Judith L. MacManus-Driscoll
Summary: Reversible solid oxide cells (rSOCs) offer a promising solution to efficient energy conversion, but have been limited in portable power and electrolysis applications due to excessive polarisation resistance of the oxygen electrode at low temperatures. This study demonstrates the growth of symmetric and complete rSOC structures with reduced polarisation resistance by tuning oxygen vacancy through annealing, providing a promising route towards high-performance rSOC devices for portable power applications.
Article
Chemistry, Physical
Kangkang Bao, Minghui Wang, Yue Zheng, Panpan Wang, Liwen Yang, Yang Jin, Hui Wu, Bin Sun
Summary: This study utilizes ethanol as an electrolyte additive to modulate the migration of zinc ions and the surface structure of zinc anodes, resulting in improved capacity retention and cycle life of zinc-based aqueous batteries.
Article
Chemistry, Physical
Haichao Yang, Wensi Cai, Ming Wang, Saif M. H. Qaid, Zhiyuan Xu, Huaxin Wang
Summary: The introduction of sodium alginate (SA) into perovskite solar cells improves the carrier dynamics, stability, and performance by inhibiting nonradiative recombination and retarded charge dynamics.
Article
Chemistry, Physical
Cuirong Zhang, Mingyuan Wei, Zihan Chen, Wansheng Lin, Shifan Yu, Yijing Xu, Chao Wei, Jinwei Zhang, Ziquan Guo, Yuanjin Zheng, Qingliang Liao, Xinqin Liao, Zhong Chen
Summary: Artificial Intelligence of Things (AIoT) aims to establish smart and informative interactions between humans and devices. However, common pixelated sensing arrays in AIoT applications present problems such as hard and brittle devices, complex structures, and low precision. This article introduces an innovative solution called the all-in-one intelligent semitransparent interactive nerve patch (AISI nerve patch), which integrates sensing, recognition, and transmission functionalities into a thin and flexible patch. The AISI nerve patch is semitransparent, allowing for accurate identification without affecting aesthetics, and it can be attached to any curved surface for intelligent and interactive applications. With rapid response time and high precision recognition, it enables the integration of artificial intelligence and achieves high recognition accuracy for further development of AIoT.
Article
Chemistry, Physical
Youcun Bai, Heng Zhang, Huijun Song, Chong Zhu, Lijin Yan, Qin Hu, Chang Ming Li
Summary: A novel stainless-steel supported lattice-mismatched V-S-Se layered compound with high selenium vacancy was synthesized by adjusting the molar ratio of sulfur to selenium. The introduction of selenium vacancies created additional redox peaks of sulfur, providing more mass transport channels and active sites for zinc ions. The specific capacity and cycle stability of the electrode were significantly improved, demonstrating great potential for practical applications and providing insights into the effects of defects on battery performance.
Article
Chemistry, Physical
Yao Xiao, Puxian Xiong, Yakun Le, Zhenjie Lun, Kang Chen, Zhiduo Wang, Peishan Shao, Zhicong Chen, Dongdan Chen, Zhongmin Yang
Summary: This study successfully synthesized a material with multi-stimulus-responsive luminescence and confirmed the internal relationship between luminescence and defects by regulating the distribution and depth of defects. The dynamic process of multi-stimulus-responsive luminescence was validated by experimental and calculation results.