Solid-state potentiometric CO2 sensor combining Li3PO4 with MoO3-doped Li2CO3 sensing electrode

Wang, Hairong; Chen, Hanlin; Zhang, Mi; Wang, Jiuhong; Sun, Jian

doi:10.1007/s11581-019-02862-4

Cited by 10 publications

(2 citation statements)

References 29 publications

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“…As is known, the Li 2 CO 3 –Au composite is a common material for a sensing electrode, which has been widely applied on solid electrolytes such as MgO-stabilized zirconia (MSZ), LaF 3 , Li 3 PO 4 , and Li 7 La 3 Zr 2 O 12 for CO 2 detection. ,− Thus, we first investigate the sensitivity of a Y-LSBO-based sensor coated with a Li 2 CO 3 –Au mixture (1:1 in weight ratio) as a sensing electrode. The EMF of the cell shows a clear response to the step change of CO 2 concentration from 400 to 4000 ppm at temperatures of 450, 500, 550 °C, as displayed in Figure a.…”

Section: Resultsmentioning

confidence: 99%

Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14

Ide

Suematsu

et al. 2020

ACS Appl. Mater. Interfaces

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Nowadays, monitoring and recording CO2 gas has become more and more important in various areas, leading to increasing demand for developing high-sensitive CO2 sensors. In this study, a novel potentiometric CO2 gas sensor is designed based on a new solid electrolyte of Y-doped La9.66Si5.3B0.7O26.14 (Y-LSBO), coated with the Li2CeO3–Au–Li2CO3 composite as a sensing electrode and Pt as a reference electrode. With the optimized composition of a sensing electrode, the electromotive force (EMF) varies linearly with the logarithm of the CO2 concentration in the range of 400–4000 ppm, exhibiting an excellent Nernstian response to CO2 gas in both dry and humid atmospheres. The fabricated CO2 sensor can be well operated at 400 °C in a dry atmosphere and 450 °C in a humid atmosphere. Based on the results, we have proposed that the good CO2 sensing performance may be associated with Li2CeO3 playing a role of “ionic bridge” between the O2– conductor (Y-LSBO) and the Li+ conductor (Li2CO3). This study not only shows the promising potential of a Y-LSBO solid electrolyte utilized in the field of gas sensors but also enriches the research of solid electrolyte–based potentiometric CO2 gas sensors.

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Section: Resultsmentioning

confidence: 99%

Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14

Ide

Suematsu

et al. 2020

ACS Appl. Mater. Interfaces

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“…Lithium carbonate (Li 2 CO 3 ) is an effective electron injection material and n‐type dopant due to its suitable work function, facile solution processability, and easy handling by thermal evaporation. [ 18,29 ] Some applications in solar cells, [ 30 ] sensors, [ 31 ] detectors, [ 32 ] and conventional visible OLEDs [ 18,29 ] are well demonstrated. Moreover, in comparison with well‐acknowledged Cs 2 CO 3 , Li 2 CO 3 shows better stability in atmosphere, facilitating subsequent OLED assembly and prolonging operation lifetime.…”

Section: Introductionmentioning

confidence: 99%

Facilely Solution‐Processed Lithium Carbonate for Tailoring Electron Injection in High‐Performance Inverted Near‐UV Organic Light‐Emitting Diodes

Yao

Wang

et al. 2021

Physica Status Solidi (a)

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Electron injection plays a key role in electron–photon conversion properties of inverted UV–visible organic light‐emitting diodes (OLEDs). Herein, facilely prepared solution‐processed lithium carbonate (Li2CO3) formic acid and boric acid solutions for tailoring electron injection in inverted near‐UV (NUV) OLEDs are studied. Superior film morphology and exceptional electronic properties of spin‐coated Li2CO3 films are examined by atomic force microscopy, X‐ray/ultraviolet photoelectron spectroscopy, current–voltage curves, and impedance spectroscopy. Efficient inverted NUV OLEDs are assembled using wide‐bandgap molecule of 2‐(4‐biphenyl)‐5‐(4‐tert‐butylphenyl)‐1,3,4‐oxadiazole as emissive layer, showing maximum radiance of 5.24 mW cm−2 (2.28 mW cm−2) and external quantum efficiency of 2.47% (2.17%) with an optimal Li2CO3 formic acid of 3 mg ml−1 (Li2CO3 boric acid of 7 mg ml−1) as electron injection tailoring. The NUV emission shows electroluminescence peaks of 404–406 nm and full width at half maximum of 52–56 nm. The results provide some feasible approaches for enhancing the performance of organic electronic devices, which require strong electron injection/extraction and accelerate industrialization.

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Enhanced CO₂ Detection Using Potentiometric Sensors Based on PIM‐1/DBU Imidazolate Membranes

Molino,

Ferraro,

Lettieri

et al. 2024

Advanced Sustainable Systems

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A novel potentiometric sensor for carbon dioxide (CO2) detection utilizing a composite membrane of Polymer of Intrinsic Microporosity (PIM‐1) and 18‐diazabicyclo[5.4.0]undec‐7‐ene imidazolate (DBU‐imidazolate) is presented. The high surface area and gas permeability of PIM‐1, combined with the chemical affinity and ion‐exchange properties of DBU‐imidazolate, contribute to enhanced CO2 sensitivity and selectivity. The research objectives included the synthesis of PIM‐1 and DBU‐imidazolate, the preparation of composite membranes, and the evaluation of their performance as CO2 sensors. Solvent casting and impregnation methods are employed to prepare the membranes, which are characterized using Thermal Gravimetric Analysis (TGA), and Field Emission Scanning Electron Microscopy (FESEM). CO₂ absorption tests and Electrochemical Impedance Spectroscopy (EIS) are conducted to assess the sensors' performance. The PIM‐1/DBU‐imidazolate membrane exhibited high efficiency in CO₂ capture and release. Open circuit voltage (OCV) measurements are performed under varying concentrations of CO2 exposure and cycles of adsorption/desorption. Results show that the membrane achieves steady state faster at higher CO2 concentrations, with a logarithmic relationship between CO2 concentration and voltage variation, indicating potential for CO2 detection in human environments. These results confirm the sensor's ability to detect varying CO2 concentrations, highlighting its potential for reliable and efficient CO2 monitoring in environmental and industrial applications.

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Solid-state potentiometric CO2 sensor combining Li3PO4 with MoO3-doped Li2CO3 sensing electrode

Cited by 10 publications

References 29 publications

Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14

Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14

Facilely Solution‐Processed Lithium Carbonate for Tailoring Electron Injection in High‐Performance Inverted Near‐UV Organic Light‐Emitting Diodes

Enhanced CO₂ Detection Using Potentiometric Sensors Based on PIM‐1/DBU Imidazolate Membranes

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Solid-state potentiometric CO2 sensor combining Li3PO4 with MoO3-doped Li2CO3 sensing electrode

Cited by 10 publications

References 29 publications

Novel Solid Electrolyte CO2 Gas Sensors Based on c-Axis-Oriented Y-Doped La9.66Si5.3B0.7O26.14

Novel Solid Electrolyte CO2 Gas Sensors Based on c-Axis-Oriented Y-Doped La9.66Si5.3B0.7O26.14

Facilely Solution‐Processed Lithium Carbonate for Tailoring Electron Injection in High‐Performance Inverted Near‐UV Organic Light‐Emitting Diodes

Enhanced CO₂ Detection Using Potentiometric Sensors Based on PIM‐1/DBU Imidazolate Membranes

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Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14

Novel Solid Electrolyte CO₂ Gas Sensors Based on c-Axis-Oriented Y-Doped La_9.66Si_5.3B_0.7O_26.14