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Das G, Ibrahim FA, Khalil ZA, Bazin P, Chandra F, AbdulHalim RG, Prakasam T, Das AK, Sharma SK, Varghese S, Kirmizialtin S, Jagannathan R, Saleh N, Benyettou F, Roz ME, Addicoat M, Olson MA, Rao DSS, Prasad SK, Trabolsi A. Ionic Covalent Organic Framework as a Dual Functional Sensor for Temperature and Humidity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311064. [PMID: 38396219 DOI: 10.1002/smll.202311064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/07/2024] [Indexed: 02/25/2024]
Abstract
Visual sensing of humidity and temperature by solids plays an important role in the everyday life and in industrial processes. Due to their hydrophobic nature, most covalent organic framework (COF) sensors often exhibit poor optical response when exposed to moisture. To overcome this challenge, the optical response is set out to improve, to moisture by incorporating H-bonding ionic functionalities into the COF network. A highly sensitive COF, consisting of guanidinium and diformylpyridine linkers (TG-DFP), capable of detecting changes in temperature and moisture content is fabricated. The hydrophilic nature of the framework enables enhanced water uptake, allowing the trapped water molecules to form a large number of hydrogen bonds. Despite the presence of non-emissive building blocks, the H-bonds restrict internal bond rotation within the COF, leading to reversible fluorescence and solid-state optical hydrochromism in response to relative humidity and temperature.
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Affiliation(s)
- Gobinda Das
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Fayrouz Abou Ibrahim
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Zahraa Abou Khalil
- Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France
| | - Philippe Bazin
- Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France
| | - Falguni Chandra
- Chemistry Department, College of Science, United Arab Emirates University, P.O. Box 15551, Al-Ain, United Arab Emirates
| | - Rasha G AbdulHalim
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Thirumurugan Prakasam
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Akshaya Kumar Das
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Sudhir Kumar Sharma
- Engineering Division, New York University Abu Dhabi (NYUAD), Abu Dhabi, 129188, United Arab Emirates
| | - Sabu Varghese
- New York University Abu Dhabi, Abu Dhabi, 129188, United Arab Emirates
| | - Serdal Kirmizialtin
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Ramesh Jagannathan
- Engineering Division, New York University Abu Dhabi (NYUAD), Abu Dhabi, 129188, United Arab Emirates
| | - Na'il Saleh
- Chemistry Department, College of Science, United Arab Emirates University, P.O. Box 15551, Al-Ain, United Arab Emirates
- National Water and Energy center, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Farah Benyettou
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
| | - Mohamad El Roz
- Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France
| | - Matthew Addicoat
- School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS, Nottingham, NG118NS, UK
| | - Mark A Olson
- Department of Physical and Environmental Sciences, Texas A&M University Corpus Christi, 6300 Ocean Dr, Corpus Christi, TX, 78412, USA
| | - D S Shankar Rao
- Centre for Nano and Soft Matter Sciences(CeNS), Arkavathi, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - S Krishna Prasad
- Centre for Nano and Soft Matter Sciences(CeNS), Arkavathi, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - Ali Trabolsi
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
- NYUAD Water Research Center, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates
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Wan S, Shah MAKY, Wang H, Lund PD, Zhu B. Exceptionally high proton conductivity in Eu 2O 3 by proton-coupled electron transfer mechanism. iScience 2024; 27:108612. [PMID: 38179065 PMCID: PMC10765062 DOI: 10.1016/j.isci.2023.108612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/22/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024] Open
Abstract
Proton conductors are typically developed by doping to introduce structural defects such as oxygen vacancies to facilitate ionic transport through structural bulk conduction mechanism. In this study, we present a novel electrochemical proton injection method via an in situ fuel cell process, demonstrating proton conduction in europium oxide (Eu2O3) through a surficial conduction mechanism for the first time. By tuning Eu2O3 into a protonated form, H-Eu2O3, we achieved an exceptionally high proton conductivity of 0.16 S cm-1. Distribution of relaxation time (DRT) analysis was employed to investigate the proton transport behavior and reveal the significant contribution of surface proton transport to the overall conductivity of Eu2O3. Remarkably, H-Eu2O3 exhibited a low activation energy for ionic transport, comparable to the best ceramic electrolytes available. The proton-coupled electron transfer (PCET) mechanism describes this novel surficial proton conduction mechanism. These findings provide new possibilities for developing advanced proton conductors with improved performance.
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Affiliation(s)
- Shuo Wan
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - M. A. K. Yousaf Shah
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - Hao Wang
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - Peter D. Lund
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
- School of Science, Aalto University, P.O. Box 15100, 00076 Aalto, Espoo, Finland
| | - Bin Zhu
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
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3
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Abstract
Although they are emerging technologies for achieving high-efficiency and green and eco-friendly energy conversion, ceramic electrochemical cells (CECs), i.e. solid oxide electrolysis cells (SOECs) and fuel cells (SOFCs), are still fundamentally limited by their inferior catalytic activities at low temperature, poor thermo-mechanical stability, high material cost, etc. The materials used in electrolytes and electrodes, which are the most important components in CECs, are highly associated with the cell performances. Therefore, rational design of electrolytes and electrodes with excellent catalytic activities and high stabilities at relatively low cost is a meaningful and valuable approach for the development of CECs. Nanotechnology is a powerful tool for improving the material performances in CECs owing to the favourable effects induced by the nanocrystallization of electrolytes and electrodes. Herein, a relatively comprehensive review on the nanotechnologies implemented in CECs is conducted. The working principles of CECs and the corresponding challenges were first presented, followed by the comprehensive insights into the working mechanisms of nanocrystalline materials in CECs. Then, systematic summarization and analyses of the commonly used nano-engineering strategies in the fabrication of CEC materials, including physical and chemical methods, were provided. In addition, the frontiers in the research of advanced electrolyte and electrode materials were discussed with a special emphasis on the modified electrochemical properties derived from nanotechnologies. Finally, the bottlenecks and the promising breakthroughs in nanotechnologies were highlighted in the direction of providing useful references for rational design of nanomaterials for CECs.
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Affiliation(s)
- Jiafeng Cao
- School of Microelectronics and Data Science, Anhui University of Technology, Maanshan 243032, Anhui, China.
| | - Yuexia Ji
- School of Microelectronics and Data Science, Anhui University of Technology, Maanshan 243032, Anhui, China.
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6102, Australia.
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Eagleton AM, Ambrogi EK, Miller SA, Vereshchuk N, Mirica KA. Fiber Integrated Metal-Organic Frameworks as Functional Components in Smart Textiles. Angew Chem Int Ed Engl 2023; 62:e202309078. [PMID: 37614205 PMCID: PMC11196116 DOI: 10.1002/anie.202309078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/25/2023]
Abstract
Owing to high modularity and synthetic tunability, metal-organic frameworks (MOFs) on textiles are poised to contribute to the development of state-of-the-art wearable systems with multifunctional performance. While these composite materials have demonstrated promising functions in sensing, filtration, detoxification, and biomedicine, their applicability in multifunctional systems is only beginning to materialize. This review highlights the multifunctionality and versatility of MOF-integrated textile systems. It summarizes the operational goals of MOF@textile composites, encompassing sensing, filtration, detoxification, drug delivery, UV protection, and photocatalysis. Building upon these recent advances, this review concludes with an outlook on emerging opportunities for the diverse applications of MOF@textile systems in the realm of smart wearables.
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Affiliation(s)
- Aileen M Eagleton
- Department of Chemistry, Dartmouth College, Burke Laboratory, 41 College Street, Hanover, NH, 03755, USA
| | - Emma K Ambrogi
- Department of Chemistry, Dartmouth College, Burke Laboratory, 41 College Street, Hanover, NH, 03755, USA
| | - Sophia A Miller
- Department of Chemistry, Dartmouth College, Burke Laboratory, 41 College Street, Hanover, NH, 03755, USA
| | - Nataliia Vereshchuk
- Department of Chemistry, Dartmouth College, Burke Laboratory, 41 College Street, Hanover, NH, 03755, USA
| | - Katherine A Mirica
- Department of Chemistry, Dartmouth College, Burke Laboratory, 41 College Street, Hanover, NH, 03755, USA
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Wang H, Tang C, Xu J. A highly sensitive flexible humidity sensor based on conductive tape and a carboxymethyl cellulose@graphene composite. RSC Adv 2023; 13:27746-27755. [PMID: 37727318 PMCID: PMC10506538 DOI: 10.1039/d3ra05232j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/08/2023] [Indexed: 09/21/2023] Open
Abstract
Flexible humidity sensors have found new applications in diverse fields including human healthcare, the Internet of Things, and so on. In this paper, a highly sensitive humidity sensor based on carboxymethyl cellulose@graphene and conductive adhesive tape was developed. The sensor was constructed on conductive tape which acted as both of the flexible substrate and the electrode to transmit electronic signals. A carboxymethyl cellulose@graphene composite was assembled on the substrate as the sensing layer by a simple spreading method in a 3-D printed groove mold. The sensitive material was characterized for its morphology, composition, crystalline phase, and hydrophilicity by SEM, EDS, XRD, and contact angle measurements. The effect of graphene on the sensitivity was investigated in detail by adjusting the doping concentration. Humidity sensing performance was tested in different relative humidity levels. The rapid responses under different respiratory conditions demonstrated their practical usability in continuous respiration monitoring and recognition of respiratory status. The conductive mechanism of the sensing film was studied by complex impedance spectroscopy under different relative humidity levels. A rational sensing mechanism was proposed integrating ionic conduction, electron conduction and swelling behavior of the carboxymethyl cellulose@graphene composite.
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Affiliation(s)
- Haoxiang Wang
- Faculty of Mechanical Engineering, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Chengli Tang
- College of Information Science and Engineering, Jiaxing University Jiaxing 314001 China
- Key Laboratory of Medical Electronics and Digital Health of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Jun Xu
- First Affiliated Hospital of Jiaxing University Jiaxing 314000 China
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6
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Dong Y, Mushtaq N, Shah MAKY, Yousaf M, Lu Y, Cao P, Ma Q, Deng C. Improved Ionic Transport Using a Novel Semiconductor Co 0.6Mn 0.4Fe 0.4Al 1.6O 4 and Its Heterostructure with Zinc Oxide for Electrolyte Membrane in LT-CFCs. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1887. [PMID: 37368317 DOI: 10.3390/nano13121887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 06/28/2023]
Abstract
Improving the ionic conductivity and slow oxygen reduction electro-catalytic activity of reactions occurring at low operating temperature would do wonders for the widespread use of low-operating temperature ceramic fuel cells (LT-CFCs; 450-550 °C). In this work, we present a novel semiconductor heterostructure composite made of a spinel-like structure of Co0.6Mn0.4Fe0.4Al1.6O4 (CMFA) and ZnO, which functions as an effective electrolyte membrane for solid oxide fuel cells. For enhanced fuel cell performance at sub-optimal temperatures, the CMFA-ZnO heterostructure composite was developed. We have shown that a button-sized SOFC fueled by H2 and ambient air can provide 835 mW/cm2 of power and 2216 mA/cm2 of current at 550 °C, possibly functioning down to 450 °C. In addition, the oxygen vacancy formation energy and activation energy of the CMFA-ZnO heterostructure composite is lower than those of the individual CMFA and ZnO, facilitating ion transit. The improved ionic conduction of the CMFA-ZnO heterostructure composite was investigated using several transmission and spectroscopic measures, including X-ray diffraction, photoelectron, and UV-visible spectroscopy, and density functional theory (DFT) calculations. These findings suggest that the heterostructure approach is practical for LT-SOFCs.
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Affiliation(s)
- Yiwang Dong
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
| | - Naveed Mushtaq
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Muhammad A K Yousaf Shah
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Muhammad Yousaf
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Yuzheng Lu
- College of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Peng Cao
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
| | - Qing Ma
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
| | - Changhong Deng
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
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7
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Cai H, Zheng D, Xia C, Zhang L, Wang X, Dong W, Chen X, Wang H, Wang B. Improving the electrochemical energy conversion of solid oxide fuel cells through the interface effect in La 0.6Sr 0.4Co 0.2Fe 0.8O 3-δ-BaTiO 3-δ electrolyte. J Colloid Interface Sci 2023; 641:70-81. [PMID: 36924547 DOI: 10.1016/j.jcis.2023.03.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 03/13/2023]
Abstract
Herein, we present a heterostructure electrolyte with considerable potential for application in low-temperature solid oxide fuel cells (LT-SOFCs). Heterostructure electrolytes are advantageous because the multiphase interfaces in their heterostructures are superior for ion conduction than for bulk conduction. Most previous studies on heterostructure electrolytes explained the influence of interfacial parameters on ion conduction in terms of the space charge zones and lattice mismatch, neglecting the characterization of the interface. In this study, a series of heterostructure electrolytes comprising La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and BaTiO3-δ (BTO) with different composition ratios was developed. Further, the lattice mismatch due to thermal stress in this system was evaluated by thermal expansion and electron energy loss spectroscopy (EELS) analyses. Results indicated that 7LSCF-3BTO produced the narrowest interface and the most surface oxygen vacancies, suggesting that the stress generated by thermal expansion increased the density of the interface. The cell with the optimal 7LSCF-3BTO composition delivered a peak power density of 910mW cm-2 and an open circuit voltage of 1.07 V at 550 °C. The heterojunction effect was studied to elucidate the prevention of short circuiting in the LSCF-BTO cell, considering the Femi level and barrier energy height. This study provides novel ideas for the design of electrolytes for LT-SOFCs from the interface perspective.
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Affiliation(s)
- Hongdong Cai
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China
| | - Dan Zheng
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China
| | - Chen Xia
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China
| | - LeiLei Zhang
- College of Sciences, Liaoning Petrochemical University, Fushun 113001, China
| | - Xunying Wang
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China
| | - Wenjing Dong
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China
| | - Xu Chen
- Hubei Jiufengshan Laboratory, Future Science and Technology City, Wuhan 420000, China.
| | - Hao Wang
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China.
| | - Baoyuan Wang
- School of Microelectronics, Hubei University, Wuhan, Hubei 430062, China.
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8
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Shah MY, Lu Y, Mushtaq N, Yousaf M, Akbar M, Rauf S, Dong Y, Lund PD, Zhu B, Asghar MI. Enabling high ionic conductivity in semiconductor electrolyte membrane by surface engineering and band alignment for LT-CFCs. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2022.121264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Zhang Y, Zhu D, Jia X, Liu J, Li X, Ouyang Y, Li Z, Gao X, Zhu C. Novel n-i CeO 2/a-Al 2O 3 Heterostructure Electrolyte Derived from the Insulator a-Al 2O 3 for Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2419-2428. [PMID: 36583856 DOI: 10.1021/acsami.2c18240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Heterostructure technologies have been regarded as promising methods in the development of electrolytes with high ionic conductivity for low-temperature solid oxide fuel cells (LT-SOFCs). Here, a novel semiconductor/insulator (n-i) heterostructure strategy has been proposed to develop composite electrolytes for LT-SOFCs based on CeO2 and the insulator amorphous alumina (a-Al2O3). The constructed CeO2/a-Al2O3 electrolyte exhibits an ionic conductivity of up to 0.127 S cm-1, and its fuel cell achieves a maximum power density (MPD) of 1017 mW cm-2 with an open-circuit voltage (OCV) of 1.14 V at 550 °C without the short-circuiting problem, suggesting that the introduction of a-Al2O3 can effectively suppress the electron conduction of CeO2. It is found that the potential energy barrier at the heterointerfaces caused by the ultrawide band gap of the insulator a-Al2O3 plays an important role in restraining electron conduction. Simultaneously, the thermoelectric effect of the insulator induces more oxygen vacancies because of interface charge compensation, which further promotes ionic transport and results in high ionic conductivity and fuel cell performance. This study presents a practical n-i heterostructure electrolyte design, and further research confirmed the advanced functionality of the CeO2/a-Al2O3 electrolyte. Our study may open frontiers in the field of developing high-efficiency electrolytes of LT-SOFCs using insulating materials such as amorphous alumina.
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Affiliation(s)
- Yingbo Zhang
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Decai Zhu
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Xin Jia
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Jiamei Liu
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Xinfang Li
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - YuZhao Ouyang
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Ze Li
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Xiaowei Gao
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
| | - Chengjun Zhu
- Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region, School of Physical Science and Technology, Inner Mongolia University, 235 West Daxue Street, Hohhot, Inner Mongolia010021, China
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10
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Sinha A, Stavrakis AK, Simić M, Stojanović GM. Wearable humidity sensor embroidered on a commercial face mask and its electrical properties. JOURNAL OF MATERIALS SCIENCE 2023; 58:1680-1693. [PMID: 36687141 PMCID: PMC9838397 DOI: 10.1007/s10853-022-08135-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
UNLABELLED Owing to the rapid development in the field of e-textile-based flexible and portable sensors, the present work demonstrates a fully textile-based stretchable face mask humidity sensor which was created using digital embroidery technique. The design of the sensor was comprised of interdigitated structured electrodes made up of polymer core-based conductive silver-coated threads and hygroscopic threads embedded between them. The fabricated sensor performed well towards moisture detection in accordance with the principle where resistance of the face mask sensor decreased with the increase in the relative humidity along with the changing operational frequency in the range from 1 Hz to 200 kHz. The electrical response (resistance, impedance, capacitance and phase angle) of the novel thread-based sensor towards change in relative humidity was recorded and showed in the present work. The embroidery of polymer-based threads onto the face mask towards humidity sensing offers a novel wearable platform for more extended biomedical applications for detection of various breath biomarkers and thus early diagnosis of diseases. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10853-022-08135-2.
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Affiliation(s)
- Ankita Sinha
- University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, Novi Sad, 21000 Serbia
| | - Adrian K. Stavrakis
- University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, Novi Sad, 21000 Serbia
| | - Mitar Simić
- University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, Novi Sad, 21000 Serbia
| | - Goran M. Stojanović
- University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, Novi Sad, 21000 Serbia
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11
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Xing Y, Zhu B, Hong L, Xia C, Wang B, Wu Y, Cai H, Rauf S, Huang J, Asghar MI, Yang Y, Lin WF. Designing High Interfacial Conduction beyond Bulk via Engineering the Semiconductor-Ionic Heterostructure CeO 2-δ/BaZr 0.8Y 0.2O 3 for Superior Proton Conductive Fuel Cell and Water Electrolysis Applications. ACS APPLIED ENERGY MATERIALS 2022; 5:15373-15384. [PMID: 36590881 PMCID: PMC9795487 DOI: 10.1021/acsaem.2c02995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/05/2022] [Indexed: 06/07/2023]
Abstract
Proton ceramic fuel cells (PCFCs) are an emerging clean energy technology; however, a key challenge persists in improving the electrolyte proton conductivity, e.g., around 10-3-10-2 S cm-1 at 600 °C for the well-known BaZr0.8Y0.2O3 (BZY), that is far below the required 0.1 S cm-1. Herein, we report an approach for tuning BZY from low bulk to high interfacial conduction by introducing a semiconductor CeO2-δ forming a semiconductor-ionic heterostructure CeO2-δ/BZY. The interfacial conduction was identified by a significantly higher conductivity obtained from the BZY grain boundary than that of the bulk and a further improvement from the CeO2-δ/BZY which achieved a remarkably high proton conductivity of 0.23 S cm-1. This enabled a high peak power of 845 mW cm-2 at 520 °C from a PCFC using the CeO2-δ/BZY as the electrolyte, in strong contrast to the BZY bulk conduction electrolyte with only 229 mW cm-2. Furthermore, the CeO2-δ/BZY fuel cell was operated under water electrolysis mode, exhibiting a very high current density output of 3.2 A cm-2 corresponding to a high H2 production rate, under 2.0 V at 520 °C. The band structure and a built-in-field-assisted proton transport mechanism have been proposed and explained. This work demonstrates an efficient way of tuning the electrolyte from low bulk to high interfacial proton conduction to attain sufficient conductivity required for PCFCs, electrolyzers, and other advanced electrochemical energy technologies.
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Affiliation(s)
- Yueming Xing
- Engineering
Research Center of Nano-Geo Materials of Ministry of Education, Faculty
of Materials Science and Chemistry, China
University of Geosciences, No. 388 Lumo Road, Wuhan430074, China
| | - Bin Zhu
- Engineering
Research Center of Nano-Geo Materials of Ministry of Education, Faculty
of Materials Science and Chemistry, China
University of Geosciences, No. 388 Lumo Road, Wuhan430074, China
- Jiangsu
Provincial Key Laboratory of Solar Energy Science and Technology/
Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing210096, China
| | - Liang Hong
- Department
of Chemical Engineering, Loughborough University, Loughborough, LeicestershireLE11 3TU, U.K.
| | - Chen Xia
- Hubei
Collaborative Innovation Center for Advanced Organic Materials, Faculty
of Physics and Electronic Science, Hubei
University, Wuhan430062, China
| | - Baoyuan Wang
- Hubei
Collaborative Innovation Center for Advanced Organic Materials, Faculty
of Physics and Electronic Science, Hubei
University, Wuhan430062, China
| | - Yan Wu
- Engineering
Research Center of Nano-Geo Materials of Ministry of Education, Faculty
of Materials Science and Chemistry, China
University of Geosciences, No. 388 Lumo Road, Wuhan430074, China
| | - Hongdong Cai
- Hubei
Collaborative Innovation Center for Advanced Organic Materials, Faculty
of Physics and Electronic Science, Hubei
University, Wuhan430062, China
| | - Sajid Rauf
- College
of Electronics and Information Engineering, Shenzhen University, Nanshan, Guangdong Province518000, China
| | - Jianbing Huang
- State Key
Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an710049, China
| | - Muhammad Imran Asghar
- Hubei
Collaborative Innovation Center for Advanced Organic Materials, Faculty
of Physics and Electronic Science, Hubei
University, Wuhan430062, China
- New
Energy Technologies Group, Department of Applied Physics, Aalto University School of Science, P. O. Box 15100, Aalto, FI-00076Espoo, Finland
| | - Yang Yang
- Department
of Chemical Engineering, Loughborough University, Loughborough, LeicestershireLE11 3TU, U.K.
| | - Wen-Feng Lin
- Department
of Chemical Engineering, Loughborough University, Loughborough, LeicestershireLE11 3TU, U.K.
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12
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Wu Z, Zhang Y, Liu Z, Ma H, Jin X, Yang G, Shi Y, Shao Z, Li S. Rapid Gas-Phase Synthesis of the Perovskite-Type BaCe 0.7Zr 0.1Y 0.1Yb 0.1O 3-δ Proton-Conducting Nanocrystalline Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47568-47577. [PMID: 36228663 DOI: 10.1021/acsami.2c11492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Perovskite-type proton-conducting materials, such as BaCe0.7Zr0.1Y0.1Yb0.1O3-δ (BCZYYb), are very attractive for the next-generation equipment of electrochemical energy conversion and storage owing to their excellent conductivity in the intermediate-temperature range (300-750 °C), as well as good thermo-chemical stability, coking resistance, and sulfur tolerance. However, the lack of a reliable and cost-effective synthesis method for such multi-component co-doping oxides limits their large-scale application. In this study, for the first time, we successfully synthesize BCZYYb electrolyte nanopowders by using a rapid, scalable flame-based gas-phase synthesis method with two different barium precursors Ba(NO3)2 and Ba(CH3COO)2, named as BCZYYb (N) and BCZYYb (CA). The as-synthesized nanoparticles exhibit good crystallinity of the pure orthorhombic perovskite BCZYYb phase. BCZYYb (CA) shows more uniform doping with the element ratio of 1:0.74:0.12:0.08:0.1, which is very close to the theoretical value. The shrinkage and surface SEM (scanning electron microscope) results indicate that the flame-made powders have superior sinterability compared to the sol-gel-made powders because of the smaller primary particle size (∼20 nm). Electrochemical impedance spectroscopy tests show that BCZYYb (CA) sintered at 1450 °C has the highest protonic conductivity of 1.31 × 10-2 S cm-1 in wet H2 when operating at 600 °C and still maintains a high-level conductivity of 1.19 × 10-2 S cm-1 even when the sintering temperature is reduced to 1350 °C, which is mainly attributed to uniform doping and good sinterability. The activation energy for the conductivity of BCZYYb (CA) is also significantly lower than that of conventional electrolytes, which suggests much better conductivity in the intermediate (∼600 °C) and even lower operating temperature. The excellent conductivity performance combined with the high-throughput production capability makes the swirling spray flame a promising synthesis method for promoting the BCZYYb electrolytes from lab to industrial-scale solid oxide fuel cells.
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Affiliation(s)
- Zeyun Wu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
| | - Yiyang Zhang
- Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Zuoqing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Haorui Ma
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
| | - Xing Jin
- State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Guangming Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yixiang Shi
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
| | - Zongping Shao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shuiqing Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
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13
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Rauf S, Hanif MB, Mushtaq N, Tayyab Z, Ali N, Shah MAKY, Motola M, Saleem A, Asghar MI, Iqbal R, Yang C, Xu W. Modulating the Energy Band Structure of the Mg-Doped Sr 0.5Pr 0.5Fe 0.2Mg 0.2Ti 0.6O 3-δ Electrolyte with Boosted Ionic Conductivity and Electrochemical Performance for Solid Oxide Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43067-43084. [PMID: 36121444 PMCID: PMC9523621 DOI: 10.1021/acsami.2c06565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Achieving fast ionic conductivity in the electrolyte at low operating temperatures while maintaining the stable and high electrochemical performance of solid oxide fuel cells (SOFCs) is challenging. Herein, we propose a new type of electrolyte based on perovskite Sr0.5Pr0.5Fe0.4Ti0.6O3-δ for low-temperature SOFCs. The ionic conducting behavior of the electrolyte is modulated using Mg doping, and three different Sr0.5Pr0.5Fe0.4-xMgxTi0.6O3-δ (x = 0, 0.1, and 0.2) samples are prepared. The synthesized Sr0.5Pr0.5Fe0.2Mg0.2Ti0.6O3-δ (SPFMg0.2T) proved to be an optimal electrolyte material, exhibiting a high ionic conductivity of 0.133 S cm-1 along with an attractive fuel cell performance of 0.83 W cm-2 at 520 °C. We proved that a proper amount of Mg doping (20%) contributes to the creation of an adequate number of oxygen vacancies, which facilitates the fast transport of the oxide ions. Considering its rapid oxide ion transport, the prepared SPFMg0.2T presented heterostructure characteristics in the form of an insulating core and superionic conduction via surface layers. In addition, the effect of Mg doping is intensively investigated to tune the band structure for the transport of charged species. Meanwhile, the concept of energy band alignment is employed to interpret the working principle of the proposed electrolyte. Moreover, the density functional theory is utilized to determine the perovskite structures of SrTiO3-δ and Sr0.5Pr0.5Fe0.4-xMgxTi0.6O3-δ (x = 0, 0.1, and 0.2) and their electronic states. Further, the SPFMg0.2T with 20% Mg doping exhibited low dissociation energy, which ensures the fast and high ionic conduction in the electrolyte. Inclusively, Sr0.5Pr0.5Fe0.4Ti0.6O3-δ is a promising electrolyte for SOFCs, and its performance can be efficiently boosted via Mg doping to modulate the energy band structure.
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Affiliation(s)
- Sajid Rauf
- College
of Electronics and Information Engineering, Shenzhen University, Shenzhen, Guangdong Province 518000, China
| | - Muhammad Bilal Hanif
- Department
of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava 84215, Slovakia
| | - Naveed Mushtaq
- Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, P. R. China
- Energy
Storage Joint Research Center, School of Energy and Environment, Southeast University, No.2 Si Pai Lou, Nanjing 210096, P. R. China
| | - Zuhra Tayyab
- Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, P. R. China
| | - Nasir Ali
- Zhejiang
Province Key Laboratory of Quantum Technology and Devices and Department
of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s
Republic of China
| | - M. A. K. Yousaf Shah
- Energy
Storage Joint Research Center, School of Energy and Environment, Southeast University, No.2 Si Pai Lou, Nanjing 210096, P. R. China
| | - Martin Motola
- Department
of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava 84215, Slovakia
| | - Adil Saleem
- College of
Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Imran Asghar
- Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, P. R. China
- New
Energy Technologies Group, Department of Applied Physics, Aalto University School of Science, Espoo FI-00076 Aalto, Finland
| | - Rashid Iqbal
- Institute
for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Changping Yang
- Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, P. R. China
| | - Wei Xu
- College
of Electronics and Information Engineering, Shenzhen University, Shenzhen, Guangdong Province 518000, China
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14
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Zhang Z, Lu T, Yang D, Lu S, Cai R, Tan W. A Dual-Function Sensor for Highly Sensitive Detection of Flame and Humidity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203334. [PMID: 35986695 DOI: 10.1002/smll.202203334] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Early warning sensors rapidly monitor critical temperatures, humidity, and fires, which are crucial to reduce or avoid natural disasters in complex environments, such as fire or water disasters. Here, a highly sensitive, readable, and dual-functional sensor is designed for a fast-response fire alarm and rapid humidity detection based on sustainable biological films (named MSCG films). The MSCG films are composed of grafted sisal nanofibers (MgC), silk nanofibers, graphene, and citric acid (CA). After crosslinking with CA, MSCG films exhibit good wet strength (i.e., 128.8 MPa) after soaking in 100 °C water, thus confirming that the films would be applicable to a broad temperature range in humid environments. After flame ignition, the MSCG films are rapidly carbonized to activate an alarm sound and a light in the circuit with a fire response time as short as 1 s. It exhibits ultrafast temperature response/recovery time (i.e., 0.1 s/0.3 s) and rapid humidity response time (i.e., 0.9 s). The dual-functional sensor is further assembled into a versatile sensor system for real-time monitoring of fire accidents and environmental humidity, which can be integrated into consumer electronics, such as portable laptops and mobile phones.
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Affiliation(s)
- Zuocai Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, P. R. China
| | - Tianyun Lu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, P. R. China
| | - Dan Yang
- RMIT University, Melbourne, VIC, 3000, Australia
| | - Shaorong Lu
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, P. R. China
| | - Ren Cai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, P. R. China
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, P. R. China
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15
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Multi-Physical and Electrochemical Coupling Model for the Protonic Ceramic Fuel Cells with H+/e−/O2− Mixed Conducting Cathodes. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12083889] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A protonic ceramic fuel cell (PCFC) has great potential for medium temperature power generation. Its working process, however, is complicated and quite different from the traditional oxygen ionic solid oxide fuel cell (O2−-SOFC) and proton exchange membrane fuel cell (PEMFC). In this paper, a multi-physical model for the PCFC with H+/e−/O2− mixed conducting cathode is established, in which the fuel- and oxidant-diffusing processes; electron-, oxygen ion-, and proton-conducting processes; three electrochemical reactions; and their coupling working details are carefully considered. Taking Ni-BZCY/BZCY/BZCY-LSCF PCFC as an example, the validation of the model is well verified by good agreements with the experiment iop-Vop curves at different temperatures. The result shows that the cathodic electrochemical reactions will be concentrated to a small thickness near the electrolyte because of the greatly decreased ionic conductivity compared with the high electronic conductivity at an intermediate temperature. O2− within the PCFC cathode is only an intermediate transform substance between the electrons and protons. Thus, there is a peak oxygen ion current distribution within the composite cathode of PCFC. The cathodic oxygen reduction half reaction is found to be a key factor to dominate the total PCFC voltage loss at the intermediate temperature zone. The concentration polarization of anode-supported PCFC is small, due to the vapors that are generated in the cathode side instead of anode side.
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16
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Feng X, Shang Y, Zhang K, Hong M, Li J, Xu H, Wang L, Li Z. In situ ligand-induced Ln-MOFs based on a chromophore moiety: white light emission and turn-on detection of trace antibiotics. CrystEngComm 2022. [DOI: 10.1039/d2ce00613h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Series novel 3D Ln-MOFs containing both carboxyphenyl and pyridinyl moieties have been constructed. Tb-MOF fluorescence turn-on sensor of levofloxacin solution with highly sensitive and excellent selective was achieved through d-PET approach.
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Affiliation(s)
- Xun Feng
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P. R. China
| | - Yapei Shang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Ka Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Manzhou Hong
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Junfeng Li
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P. R. China
| | - Hongdi Xu
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P. R. China
| | - Liya Wang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P. R. China
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473601, P. R. China
| | - Zhongjun Li
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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17
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Lu Y, Yousaf Shah MAK, Mushtaq N, Yousaf M, Lund PD, Zhu B, Asghar MI. A-site deficient semiconductor electrolyte Sr 1−xCo xFeO 3−δ for low-temperature (450–550 °C) solid oxide fuel cells. RSC Adv 2022; 12:24480-24490. [PMID: 36128392 PMCID: PMC9426435 DOI: 10.1039/d2ra03823d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/17/2022] [Indexed: 11/21/2022] Open
Abstract
Fast ionic conduction at low operating temperatures is a key factor for the high electrochemical performance of solid oxide fuel cells (SOFCs). Here an A-site deficient semiconductor electrolyte Sr1−xCoxFeO3−δ is proposed for low-temperature solid oxide fuel cells (LT-SOFCs). A fuel cell with a structure of Ni/NCAL-Sr0.7Co0.3FeO3−δ–NCAL/Ni reached a promising performance of 771 mW cm−2 at 550 °C. Moreover, appropriate doping of cobalt at the A-site resulted in enhanced charge carrier transportation yielding an ionic conductivity of >0.1 S cm−1 at 550 °C. A high OCV of 1.05 V confirmed that neither short-circuiting nor power loss occurred during the operation of the prepared SOFC device. A modified composition of Sr0.5Co0.5FeO3−δ and Sr0.3Co0.7FeO3−δ also reached good fuel cell performance of 542 and 345 mW cm−2, respectively. The energy bandgap analysis confirmed optimal cobalt doping into the A-site of the prepared perovskite structure improved the charge transportation effect. Moreover, XPS spectra showed how the Co-doping into the A-site enhanced O-vacancies, which improve the transport of oxide ions. The present work shows that Sr0.7Co0.3FeO3−δ is a promising electrolyte for LT-SOFCs. Its performance can be boosted with Co-doping to tune the energy band structure. Fast ionic conduction at low operating temperatures is a key factor for the high electrochemical performance of solid oxide fuel cells (SOFCs).![]()
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Affiliation(s)
- Yuzheng Lu
- School of Electronic Engineering, Nanjing Xiao Zhuang University, 211171 Nanjing, China
| | - M. A. K. Yousaf Shah
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Naveed Mushtaq
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Muhammad Yousaf
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Peter D. Lund
- New Energy Technologies Group, Department of Applied Physics, Aalto University School of Science, P. O. Box 15100, FI-00076 Aalto, Espoo, Finland
| | - Bin Zhu
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing 210096, China
| | - Muhammad Imran Asghar
- New Energy Technologies Group, Department of Applied Physics, Aalto University School of Science, P. O. Box 15100, FI-00076 Aalto, Espoo, Finland
- Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei, 430062, China
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18
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Wen N, Song T, Ji Z, Jiang D, Wu Z, Wang Y, Guo Z. Recent advancements in self-healing materials: Mechanicals, performances and features. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.105041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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19
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Abstract
AbstractSemiconductors and the associated methodologies applied to electrochemistry have recently grown as an emerging field in energy materials and technologies. For example, semiconductor membranes and heterostructure fuel cells are new technological trend, which differ from the traditional fuel cell electrochemistry principle employing three basic functional components: anode, electrolyte, and cathode. The electrolyte is key to the device performance by providing an ionic charge flow pathway between the anode and cathode while preventing electron passage. In contrast, semiconductors and derived heterostructures with electron (hole) conducting materials have demonstrated to be much better ionic conductors than the conventional ionic electrolytes. The energy band structure and alignment, band bending and built-in electric field are all important elements in this context to realize the necessary fuel cell functionalities. This review further extends to semiconductor-based electrochemical energy conversion and storage, describing their fundamentals and working principles, with the intention of advancing the understanding of the roles of semiconductors and energy bands in electrochemical devices for energy conversion and storage, as well as applications to meet emerging demands widely involved in energy applications, such as photocatalysis/water splitting devices, batteries and solar cells. This review provides new ideas and new solutions to problems beyond the conventional electrochemistry and presents new interdisciplinary approaches to develop clean energy conversion and storage technologies.
Graphic Abstract
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20
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Yang F, Zhang Y, Liu J, Yousaf M, Yang X. Standardized Procedures Important for Improving Low-Temperature Ceramic Fuel Cell Technology: From Transient to Steady State Assessment. NANOMATERIALS 2021; 11:nano11081923. [PMID: 34443752 PMCID: PMC8399102 DOI: 10.3390/nano11081923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 12/02/2022]
Abstract
As the stress–strain curve of standardized metal samples provides the basic details about mechanical properties of structural materials, the polarization curve or current–voltage characteristics of fuel cells are vitally important to explore the scientific mechanism of various solid oxide cells aiming at low operational temperatures (below 600 °C), ranging from protonic conductor ceramic cells (PCFC) to emerging Semiconductor ionic fuel cell (SIFC)/Semiconductor membrane fuel cells (SMFC). Thus far, worldwide efforts to achieve higher nominal peak power density (PPD) at a low operational temperature of over 0.1 s/cm ionic conductivity of electrolyte and super catalyst electrode is the key challenge for SIFCs. Thus, we illustrate an alternative approach to the present PPD concept and current–voltage characteristic. Case studies reveal that the holy grail of 1 W/cm2 from journal publications is expected to be reconsidered and normalized, since partial cells may still remain in a transient state (TS) to some extent, which means that they are unable to fulfill the prerequisite of a steady state (SS) characteristic of polarization curve measurement. Depending on the testing parameters, the reported PPD value can arbitrarily exist between higher transient power density (TPD) and lower stable power density (SPD). Herein, a standardized procedure has been proposed by modifying a quasi-steady state (QSS) characterization based on stabilized cell and time-prolonged measurements of common I–V plots. The present study indicates, when compared with steady state value, that QSS power density itself still provides a better approximation for the real performance of fuel cells, and concurrently recalls a novel paradigm transformation from a transient to steady state perspective in the oxide solid fuel cell community.
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Affiliation(s)
- Fan Yang
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing 210096, China; (Y.Z.); (J.L.); (M.Y.); (X.Y.)
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy & Environment, Southeast University, Nanjing 210096, China
- Correspondence: or
| | - Yifei Zhang
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing 210096, China; (Y.Z.); (J.L.); (M.Y.); (X.Y.)
| | - Jingjing Liu
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing 210096, China; (Y.Z.); (J.L.); (M.Y.); (X.Y.)
| | - Muhammad Yousaf
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing 210096, China; (Y.Z.); (J.L.); (M.Y.); (X.Y.)
| | - Xinlei Yang
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, School of Energy & Environment, Southeast University, Nanjing 210096, China; (Y.Z.); (J.L.); (M.Y.); (X.Y.)
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21
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Rauf S, Awan M, Rauf N, Tayyab Z, Ali N, Zhu B, Hayat A, Yang CP. The role of band structure in Co- and Fe-co-doped Ba 0.5Sr 0.5Zr 0.1Y 0.1O 3-δ perovskite semiconductor to design an electrochemical aptasensing platform: application in label-free detection of ochratoxin A using voltammetry. Mikrochim Acta 2021; 188:177. [PMID: 33907901 DOI: 10.1007/s00604-021-04820-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 04/02/2021] [Indexed: 11/30/2022]
Abstract
Nanocomposites can offer a platform to conjugate biorecognition features of aptamer with unique size-dependent properties of a given material, which can autoprobe the binding event based on their electroactive characteristics. Herein, we design electroactive switchable aptamer probes based on co-doped single-phase semiconducting materials employing the cyclic voltammetry method to record the current signal at each step of electrochemical characterization. To do so, we utilized a facile hydrothermal method assisted by co-precipitation method such as Co-Fe-co-doped Ba0.5Sr0.5Zr0.1Y0.1O3-δ (CF-BSZY) and tuned the alignment of the energy band structure of the material to amplify the output of the electrochemical signal. At various steps, changes occurred in the electrochemical properties at the surface of CF-BSZY. The binding of the ssDNA with prepared materials enhances the current signal by the interaction with the target (ochratoxin A (OTA)) depressing the current signal and facilitating the construction of a novel design of electrochemical aptasensor. As a proof of concept, an electrochemical aptasensor for the detection of ochratoxin A (OTA) in rice samples has been developed. The electrochemical aptasensor provides a limit of detection (LOD) of 0.00012 μM (0.12 nM), with a linear range from 0.000247 to 0.74 μM and sound OTA recovery in real samples. The developed aptasensor is simply designed and is free of oligonucleotide labeling or decorative nanoparticle modifications. The proposed mechanism is generic in principle with the potential to translate any type of aptamer and target binding event into a detectable signal; hence, it can be largely applied to various bioreceptor recognition phenomena for subsequent applications.
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Affiliation(s)
- Sajid Rauf
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062, Hubei, China
| | - Maryam Awan
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
| | - Naveed Rauf
- Department of Endocrinology, Children's Hospital of Zhejiang University, School of Medicine, Hangzhou, 310051, China
| | - Zuhra Tayyab
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062, Hubei, China
| | - Nasir Ali
- Zhejiang Province Key Laboratory of Quantum Technology and Devices and Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Bin Zhu
- Energy Storage Joint Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing, 210096, People's Republic of China.
| | - Akhtar Hayat
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan.
| | - Chang Ping Yang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, 430062, Hubei, China. .,Faculty of Materials Science and Engineering, Taiyuan University of Science and Technology, Waliu Road 66, Wanboling District, Taiyuan City, Shanxi Province, China.
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22
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Abstract
Fuel cells are highly efficient and green power sources. The typical membrane electrode assembly is necessary for common electrochemical devices. Recent research and development in solid oxide fuel cells have opened up many new opportunities based on the semiconductor or its heterostructure materials. Semiconductor-based fuel cells (SBFCs) realize the fuel cell functionality in a much more straightforward way. This work aims to discuss new strategies and scientific principles of SBFCs by reviewing various novel junction types/interfaces, i.e., bulk and planar p-n junction, Schottky junction, and n-i type interface contact. New designing methodologies of SBFCs from energy band/alignment and built-in electric field (BIEF), which block the internal electronic transport while assisting interfacial superionic transport and subsequently enhance device performance, are comprehensively reviewed. This work highlights the recent advances of SBFCs and provides new methodology and understanding with significant importance for both fundamental and applied R&D on new-generation fuel cell materials and technologies.
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23
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Zhang L, Zhou Y, Han S. The Role of Metal–Organic Frameworks in Electronic Sensors. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202006402] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lin‐Tao Zhang
- Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 P. R. China
| | - Ye Zhou
- Institute for Advanced Study Shenzhen University Shenzhen 518060 P. R. China
| | - Su‐Ting Han
- Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
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Zhang L, Zhou Y, Han S. The Role of Metal–Organic Frameworks in Electronic Sensors. Angew Chem Int Ed Engl 2021; 60:15192-15212. [DOI: 10.1002/anie.202006402] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/25/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Lin‐Tao Zhang
- Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 P. R. China
| | - Ye Zhou
- Institute for Advanced Study Shenzhen University Shenzhen 518060 P. R. China
| | - Su‐Ting Han
- Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
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25
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Wang Q, Lian M, Zhu X, Chen X. Excellent humidity sensor based on ultrathin HKUST-1 nanosheets. RSC Adv 2021; 11:192-197. [PMID: 35423053 PMCID: PMC8690182 DOI: 10.1039/d0ra08354b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/10/2020] [Indexed: 12/24/2022] Open
Abstract
An excellent humidity sensor based on ultrathin HKUST-1 nanosheets was developed and some insights for the morphology–activity relationship were provided.
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Affiliation(s)
- Qiaoe Wang
- Key Laboratory of Cosmetic
- Beijing Technology and Business University
- China National Light Industry
- Beijing 100048
- P. R. China
| | - Meiling Lian
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xiaowen Zhu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xu Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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26
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Qiao Y, Li Z, Yu MH, Chang Z, Bu XH. A metal–organic framework featuring highly sensitive fluorescence sensing for Al 3+ ions. CrystEngComm 2021. [DOI: 10.1039/d1ce01115d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A new fluorescent MOF can detect Al3+ ions with high selectivity and sensitivity via turn-off effect and emission color change.
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Affiliation(s)
- Yang Qiao
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Zeqi Li
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Mei-Hui Yu
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ze Chang
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xian-He Bu
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
- College of Chemistry, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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27
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Wang X, Deng Y, Chen X, Jiang P, Cheung YK, Yu H. An ultrafast-response and flexible humidity sensor for human respiration monitoring and noncontact safety warning. MICROSYSTEMS & NANOENGINEERING 2021; 7:99. [PMID: 34900333 PMCID: PMC8628006 DOI: 10.1038/s41378-021-00324-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/22/2021] [Accepted: 10/08/2021] [Indexed: 05/14/2023]
Abstract
The humidity sensor is an essential sensing node in medical diagnosis and industrial processing control. To date, most of the reported relative humidity sensors have a long response time of several seconds or even hundreds of seconds, which would limit their real application for certain critical areas with fast-varying signals. In this paper, we propose a flexible and low-cost humidity sensor using vertically aligned carbon nanotubes (VACNTs) as electrodes, a PDMS-Parylene C double layer as the flexible substrate, and graphene oxide as the sensing material. The humidity sensor has an ultrafast response of ~20 ms, which is more than two orders faster than most of the previously reported flexible humidity sensors. Moreover, the sensor has a high sensitivity (16.7 pF/% RH), low hysteresis (<0.44%), high repeatability (2.7%), good long-term stability, and outstanding flexibility. Benefiting from these advantages, especially the fast response, the device has been demonstrated in precise human respiration monitoring (fast breathing, normal breathing, deep breathing, asthma, choking, and apnea), noncontact electrical safety warning for bare hand and wet gloves, and noncontact pipe leakage detection. In addition, the facile fabrication of the flexible platform with the PDMS-Parylene C double layer can be easily integrated with multisensing functions such as pH sensing, ammonium ion sensing, and temperature sensing, all of which are useful for more pattern recognition of human activity.
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Affiliation(s)
- Xiaoyi Wang
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
| | - Yang Deng
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
| | - Xingru Chen
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
| | - Peng Jiang
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
| | - Yik Kin Cheung
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
| | - Hongyu Yu
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, 999077 Kowloon, Hong Kong SAR China
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28
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Peng B, Zhao F, Ping J, Ying Y. Recent Advances in Nanomaterial-Enabled Wearable Sensors: Material Synthesis, Sensor Design, and Personal Health Monitoring. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002681. [PMID: 32893485 DOI: 10.1002/smll.202002681] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/15/2020] [Indexed: 05/20/2023]
Abstract
Wearable sensors have gained much attention due to their potential in personal health monitoring in a timely, cost-effective, easy-operating, and noninvasive way. In recent studies, nanomaterials have been employed in wearable sensors to improve the sensing performance in view of their excellent properties. Here, focus is mainly on the nanomaterial-enabled wearable sensors and their latest advances in personal health monitoring. Different kinds of nanomaterials used in wearable sensors, such as metal nanoparticles, carbon nanomaterials, metallic nanomaterials, hybrid nanocomposites, and bio-nanomaterials, are reviewed. Then, the progress of nanomaterial-based wearable sensors in personal health monitoring, including the detection of ions and molecules in body fluids and exhaled breath, physiological signals, and emotion parameters, is discussed. Furthermore, the future challenges and opportunities of nanomaterial-enabled wearable sensors are discussed.
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Affiliation(s)
- Bo Peng
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Fengnian Zhao
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Yibin Ying
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang A&F University, Hangzhou, 311300, P. R. China
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29
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Yuan R, He H. State of the art methods and challenges of luminescent metal–organic frameworks for antibiotic detection. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00955e] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review focuses on recent developments in the design and synthesis of luminescence MOFs for monitoring antibiotics.
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Affiliation(s)
- Rongrong Yuan
- Department of Materials Science and Engineering
- Jilin Jianzhu University
- Changchun 130118
- P. R. China
| | - Hongming He
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
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