JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Fangxu Hu,Yuanyuan Ren,Langlang Chen,Yijin Sheng,Cheng Zheng,De Li,Yong Chen
The electrochemical oscillation of Li-ion batteries is a novel electrochemical phenomenon, which has been discovered in two-phase materials of Li 4 Ti 5 O 12 and LiCrTiO 4 . To analyze the electrochemical oscillation in this work, a three-electrode coin cell was designed and assembled with a specialized reference electrode, based on the conventional two-electrode coin cell. In the three-electrode coin cell, a Li-deficient Li 4 Ti 5 O 12 material exhibits a distinct electrochemical oscillation during the galvanostatic charge process, and its electrochemical kinetics was studied by in-situ electrochemical impedance spectroscopy (EIS). Compared with two other Li 4 Ti 5 O 12 materials without electrochemical oscillation, the Li-deficient Li 4 Ti 5 O 12 material had an evidently larger resistance of the SEI layer (R sei ) and charge transfer resistance (R ct ) in the EIS spectra. When the electrochemical oscillation emerged, the Warburg impedance (W s ) dramatically transformed into the capacitive impedance in the EIS spectra, indicating that the intraparticle phase separation had been replaced by the interparticle phase separation. This study further confirmed the reaction process of electrochemical oscillation proposed in our previous work, so as to finally reveal the underlying mechanism of this novel phenomenon.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xin Wu,Jie Zhong,Houji Liu,Yuxi Ren,Haiquan Zhang,Zijing Liu,Ning Wang
Based on the large extraction efficiency of 10–200 μg cm −2 h −1 , the electrolysis-based technology is one of the most promising methods for large-scale extraction of lithium resources from natural seawater. The high potential safety hazard is the inherent defect of the conventional two-electrode electrolytic cell because of the threshold voltage of 3.9 V, which is very close to the decomposition voltage of carbonate electrolytes (4.5–5.0 V). Herein, we designed a novel triple-electrode device, using spinel Li 4 Ti 5 O 12 and 1 M LiPF 6 /FEC + FEMC + HFE respectively as a temporary carrier for storing Li-ions and perfluorinated electrolyte. The threshold voltage of the multi-electrode device is lowered to 2.3 V, which expands the electrochemical window for lithium resource extraction from 1.1 V to 2.7 V. LTO electrode carrier is impossible to electrocatalyze the as-prepared fluoride electrolyte; the compound electrolyte is chemically stable to Li metal as well, avoiding the formation of lithium dendrites . Therefore, the Li 4 Ti 5 O 12 /Li battery exhibits outstanding cycle performances of 99.3% Coulombic efficiency and 95% capacity retention during 250 cycles. Multi-electrode electrochemical devices have shown high safety, stability and extraction efficiency in the practice of extracting Li metal from natural seawater, which is very beneficial to the development of marine mineral resources.
研究领域:
材料科学
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电化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Liming Hu,Abdou Latif Imorou,Zhixin Chen,Henglin Xiao
Efficient slurry dewatering is critical in numerous engineering and environmental applications. Traditional electro-osmosis methods often struggle with uneven electrical field distribution and electrode corrosion, limiting their performance. To address these challenges, this study presents an enhanced pressurized electro-osmotic dewatering (EPEOD) technology featuring a three-electrode array configuration and a fabric electrode (FE) material. This configuration offers bi-directional water migration, superior corrosion resistance, and uniform electric current distribution, enhancing dewatering efficiency significantly. Experiments were conducted using slurry samples of bentonite and kaolin in varying proportions to assess the variation in dewatering performance and soil properties. The findings demonstrated that the proposed technique significantly improved water removal, reducing the initial moisture content from 325 % to a final moisture content of 94.3 % for a 100 % bentonite sample. This performance was notably better than that of other methods, such as mechanical dewatering (MD), electro-osmotic dewatering (EOD), and pressurized electro-osmotic dewatering (PEOD) with electrode reversal (ER) technique with a final water content of 130.4 %. The electrode array configuration and the fabric electrode minimize corrosion and reduce electrical potential loss at the electrode-soil interface. Ion concentration profiles indicated that Ca 2+ ions are primarily responsible for the transportation of pore water toward the cathode. The EPEOD process was shown to alter soil properties, including reductions in liquid limits (LL) and plasticity indices (PI). Overall, this study highlights the effectiveness of the proposed novel EPEOD technique in enhancing slurry dewatering performance by implementing a three-electrode array configuration and a fabric electrode material.
研究领域:
土木工程
·
环境工程
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产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Guodong Liu,Xiaolong Dou,Pinna Zhang,Sijie Yin,Qifeng Tan,Xin Jin,Chaojiang Li,Xianchao Zhang
Most amperometric glucose sensors utilize nanomaterials to increase the surface area of the working electrode for sensitivity enhancement. However, this approach not only increases the cost and complicates the fabrication process, but also results in functional surfaces with limited durability. We propose a wearable microfluidic amperometric sensor featuring a spatially arranged three-electrode system (TES) for sweat glucose analysis. We optimize sensing electrodes' shape, size, spacing, and spatial arrangement through simulations and electrochemical measurements by comparing cyclic voltammogram behavior. The spatial TES is then designed based on the geometry of the microfluidic chamber, and the sensor is fabricated using a combination of laser cutting, screen printing, and layer-by-layer assembly techniques. The wearable microfluidic amperometric glucose sensor exhibits excellent linearity and specificity in in-vitro characterization. Additionally, it achieves comparable detection sensitivity (approximately 7.2 μA/mM) relative to sensors utilizing nanomaterials. By continuously analyzing glucose variations in sweat samples from the subject's abdomen, we validate the reliability and practicality of this device for real-time monitoring of sweat glucose.
研究领域:
生物医学工程
·
分析化学
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产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Luhan Lin,Hongli Zhao,Jian Hou,Minbo Lan
Hydrogen peroxide (H 2 O 2 ), a crucial redox signaling molecule and neuromodulator, is closely associated with pathological processes, including cancer progression and neurodegenerative disorders. Current methods for in vivo H 2 O 2 detection, such as fluorescence imaging and chemiluminescence, suffer from the limitation of spatial resolution and invasiveness, which makes it difficult to monitor oxidative stress gradients in deep-seated tumors. Therefore, this research developed an implantable triple-electrode biosensor fabricated via screen-printing technology based on carboxylated multi-walled carbon nanotubes (MWCNT) and Prussian blue (PB) nanocomposites. The biosensor presented dual linear detection ranges of 0.8–1126 μM (R 2 =0.9937) and 1286–3766 μM (R 2 =0.9939) with a 0.47 μM detection limit. It demonstrated a >95% specificity compared with other interfering substances and maintained 93.2% signal retention over 30 days. Particularly, in situ implantation in melanoma-bearing mice with one-week-growth-time solid tumors revealed the H 2 O 2 levels 12- to 18-fold higher than in normal tissues, consistent with cancer-associated oxidative stress mechanisms. This platform addresses challenges such as rapid enzymatic degradation and microenvironmental complexity, enabling invasive profiling of H 2 O 2 detection in solid tumors.
研究领域:
生物医学工程
·
肿瘤学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Youjie Rong,Xiaomin Zhang,Huijie Li,Jianhua Fei,Ruiqiang Hang,Xiangyu Zhang,Xiaobo Huang,Xiaohong Yao
Flexible polymer molecular chains are of great interest to researchers in the field of flexible wearable electronics due to their unrivaled flexibility and ductility. However, achieving high toughness, high elasticity, environmental stability and easy machining of flexible electronic materials remains a challenge. In this study, we present a photocurable eutectic gel mainly composed of DMAPS, AAc, Zr 4+ and deep eutectic solvents (DES). Due to the strong coordination between zirconium ions and polymer networks, the gel can be endowed with excellent properties, such as excellent tensile strength (1.14 MPa), low hysteresis (5 kJ·m −3 ) and good adhesion (above 40 kPa). DES can not only give the gel good electrical conductivity, but also maintain the stability of the gel to ensure that the leakage or volatilization of the solvent will not occur in use. The properties mentioned above allow the gel to achieve a sensitivity factor of up to 1.7 over a small strain range, demonstrating its potential applications in the field of flexible strain sensors and triboelectric flexible electrode materials. What’s more, the gel can be used to prepare complex geometric shapes with high precision through digital light processing (DLP) based 3D printing technology. Therefore, this work introduces a novel approach for the development of highly stable flexible wearable devices, which has the potential to expand the applications of eutectic gels.
研究领域:
材料科学
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柔性电子
·
传感技术
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Yanan Wang,Yali Liu,Xiao Wang,Xiyue Cao,Jianfei Xia,Zonghua Wang
In this work, a wearable and flexible three-electrode electrochemical sensing system (TESS) by using a two-in-one enzyme-mimic working electrode (TIOWE) is reported. The integrated three-electrode, including working electrodes, reference electrodes, and counter electrodes are formed by transfer printing of Ni 2 P-based composite electrode ink (Ni 2 P/G ink), Ag/AgCl ink, and carbon ink onto PDMS substrate, respectively. The Ni 2 P/G ink-based working electrodes have both good conductivity and enzyme-mimic catalytic activity towards glucose. Under optimized conditions, the TIOWE-TESS has a low detection limit of 0.37 μM and wide linear ranges of 0.001 mM–0.1 mM and 0.1 mM–1.4 mM. Furthermore, the TIOWE-TESS has good applicability in serum samples and reveals remarkable electrochemical performance at fluctuant working temperatures. The proposed TIOWE-TESS can be integrated on a waterproof bandage to fabricate a skin-friendly patch device for sweet glucose monitoring, which highlights its potential applications in flexible and wearable commercial devices for health-monitoring.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Ling Zhao,Yunhe Zhang,Yuntao Li,Chunxia Zhao,Chao Zou,Zhixing Zhao,Xing Li,Mingshan Wang,Yuanhua Lin,Yun Huang,Wu Long
Aqueous zinc-ion batteries (ZIBs) have garnered worldwide attention owing to their high safety, competitive price, excellent charge storage capacity and environment friendliness. However, the problems of hydrogen evolution , corrosion and dendrite growth lead to capacity degradation and low Coulombic efficiency, hindering the successful realization in practical applications of ZIBs . Herein, an effective and multifunctional electrolyte additive , i.e., trigonelline hydrochloride (Tri), is developed as one of the zwitterion-type additives in ZnSO 4 electrolyte. On the one hand, the Tri molecules weaken the solvation interactions between Zn 2+ and H 2 O, regulating the concentration of Zn 2+ ions. On the other hand, the Tri molecules adsorb on the Zn anode surface and tune the transfer kinetics of Zn 2+ ions, preventing hydrogen evolution reaction (HER) on the anode surface and alleviating dendritic growth and corrosion of Zn foil. Moreover, the lower pH value of electrolytes aroused by Tri can suppress the formation of by-products, such as Zn 4 SO 4 (OH) 6 ·5H 2 O (ZSH) and ZnO. Consequently, the suppressed side reactions, such as HER, corrosion and dendrite formation during Zn plating/stripping process of Zn symmetric battery (Zn||Zn) and full batteries (Zn||LFP and Zn||V 2 O 5 ) significantly enhance cycling life and reversibility after utilizing Tri additive electrolyte. These findings suggest potential avenues for further research into leveraging zwitterion-type additives to enhance the performance of zinc-ion batteries.
研究领域:
化学
·
材料科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Beiying Yang,Xiu Zeng,Yu Ge,Weining Liu,Wenxue Hao,Chunyingzi Long,Linkang Wang,Qianyue Wu,Yangping Wen,Jinhua Zhang
Clostridium perfringens (Cp) β2 toxin poses a significant threat to the breeding industry because of its potential to cause enterotoxaemia in livestock. However, existing quantitative methods are very scarce. Thus, we developed a rapid, portable, low-cost quantitative detection method for Cp β2 toxin using a smartphone-based electrochemical immunosensor. Recombinant 32a-β2 toxin protein was successfully prepared as an antigen, as well as its monoclonal antibody. As an alternative to the traditional three-electrode system, a ternary nanocomposite-modified commercially integrated three-electrode chip was fabricated. A smartphone-based electrochemical immunosensor was constructed by combining a low-cost handheld potentiostat with a smartphone, and it was compared with a large-scale potentiostat. Under optimal conditions, the portable sensor for identifying Cp β2 strain expression displayed a linear relationship from 0.1 to 100 ng mL −1 , a low detection limit of 16.45 pg mL −1 , high sensitivity, a low cost, easy operation, outdoor rapid detection, and satisfactory practicability and reliability.
研究领域:
兽医学
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生物技术
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食品科学
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产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 19
·10465-10472
·
IF 3.049
Guokang Fan,Peng Sun,Jie Zhao,Dongxue Han,Li Niu,Guofeng Cui
Precisely detecting the concentration of glucose in the human body is an attractive way to prevent or diagnose diabetes. Compared with the traditional enzyme-based electrochemical glucose sensors, the non-enzymatic ones have gradually come to people's attention recently. By integrating three electrodes into one device, glucose sensors can achieve superior performance and are convenient to carry. Herein, a non-enzymatic three-electrode interdigitated glucose sensor (TEIDGS) based on nanoporous gold is designed and fabricated. To our best knowledge, it is the first time that interdigitated electrodes are combined in a single non-enzymatic glucose sensor device. Due to the advantage of the interdigitated structure and the smart design of the three-electrode circuit board, the TEIDGS can effectively reduce concentration polarization and achieve a high detective sensitivity for glucose of 1217 μA mM−1 cm−2 and 343 μA mM−1 cm−2 in the ranges of 0.001–0.590 mM and 0.59–7.00 mM, respectively. Moreover, a low detection limit of 390 nM can be reached. In addition, this TEIDGS possesses excellent selectivity for glucose among other interferents. Strikingly, after three weeks of operation, it can still retain a high detection performance. This work will certainly provide an efficient structure and proper catalytic material choice for future non-enzymatic glucose sensors.
研究领域:
电化学
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生物传感器
·
材料科学
·
纳米技术
·
糖尿病监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Yuanduo Qu,Xia He,Jinling Hu,Lianfeng Duan,Junkai Wang,Siqi Liao,Fushen Lu
The combination of solar cells and rechargeable batteries has been confirmed as a new strategy for the development of solar energy utilization. However, the high charging voltage of Li-ion battery (3.0–4.2 V) and incompatible electrolyte with solar cell is adverse to the combination of photo-assisted rechargeable battery (PRB). In this work, Li–S battery as an energy storage unit is combined with dye-sensitized solar cell to form an integrated three-electrode photo-assisted rechargeable Li–S battery (PRSB). The compatible C/S electrode provides a bridge for realizing the bi-function of photoelectric conversion and storage. In contrast to the dual electrolytes in the previously reported PRBs, lithium bis((trifluoromethyl)sulfonyl)azanide (LiTFSI), namely the highly compatible mono-electrolyte in our newly designed PRSB with three-electrode, facilitates the charge separation and enhances the capacity and stability of integrated photo-assisted rechargeable battery. With the compensation of photogenerated carrier , the charge voltage of PRSB drops 0.12 V and the discharge capacity increases to 885 mAh g −1 under solar charging, indicating that the integrated device is promising to save electric energy and improve the performance of PRBs.
研究领域:
能量存储
·
太阳能
·
电池技术
·
光电化学系统
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Xin Zhang,Shuyan Miao,Jing Zhou,Tingting Zhou,Tian Gan,Yong Tang
We present a disposable paper-based molecularly imprinted electrochemical sensor for highly sensitive and selective monitoring of phenolic pollutants. The sensor features a fully integrated three-electrode array fabricated through an eco-friendly vacuum filtration method, which utilizes single-walled carbon nanotube-based substrates to provide excellent conductivity, large surface area, and low-cost electrode platforms. These substrates enable effective deposition of hollow-structured zeolitic imidazolate framework-8-derived N-doped carbon polyhedrons supporting Pt single-atom catalysts (Pt-N-C) synthesized via high-temperature calcination. Subsequent electropolymerization of a molecularly imprinted polymer (MIP) on the electrode surface was achieved using 3,4-ethylenedioxythiophene and pyrrole as dual functional monomers. Comprehensive characterization demonstrates that the Pt-N-C architecture exhibits abundant atomic Pt catalytic sites, nitrogen-decorated hierarchical porosity, and maximized electrochemical accessibility, collectively contributing to exceptional detection sensitivity for multiple phenolic compounds including 2-chloro-4-methoxyphenol, 4-bromo-2-methoxyphenol, 4-aminophenol, and 4-nitrophenol. Concurrently, the MIP layer demonstrates rapid binding kinetics and high molecular recognition capacity, significantly enhancing selective identification capabilities. The developed sensor successfully achieves direct quantification of these phenolic contaminants in unprocessed complex wastewater samples without requiring pretreatment procedures.
研究领域:
分析化学
·
环境科学
·
电化学
·
纳米技术
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）