A comparative study on silicon-based negatrode materials in metallic cavity electrode and button half cell — Uncovering unseen microscopic and dynamic features

Tan, Yu; Xiong, Qilun; Jiang, Tingting; Tang, Fangqi; Zhou, Yingke; Chen, George Z.

doi:10.1016/j.est.2023.108854

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…The peak current demonstrated a positive correlation with the scanning rate, whereas the peak potential shifted toward both ends as the scanning rate increased (Figure d) .25ex2ex lefttrue I normalo normalx = 4.33829 ν 1 / 2 − 5.32126 I normalr normale normald prefix= − 3.94632 ν 1 / 2 + 5.55331 where I ox is the oxidation peak current (mA), I red is the reduction peak current (mA), and v is the scanning rate (mV/s). The faster the scanning rate, the greater the absolute value of the peak current, indicating that the reaction on the electrode surface is controlled by diffusion . Furthermore, electrochemical impedance spectroscopy (EIS) characterizes that the carbon fiber modified with the conductive polymer PEDOT:PSS has a lower resistance (Figure e).…”

Section: Results and Discussionmentioning

confidence: 99%

“…The faster the scanning rate, the greater the absolute value of the peak current, indicating that the reaction on the electrode surface is controlled by diffusion. 49 Furthermore, electrochemical impedance spectroscopy (EIS) characterizes that the carbon fiber modified with the conductive polymer PEDOT:PSS has a lower resistance (Figure 4e). The potential response of the TPFV/CPP yarn was tested using a 1−32 mM K + solution to establish the relationship between a fixed potential and specified ion concentration (Figure 4f,g).…”

Section: Cos =mentioning

confidence: 99%

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Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical Performance

Ma,

Wu,

Luo

et al. 2024

ACS Appl. Mater. Interfaces

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Textile-based sweat sensors display great potential to enhance wearable comfort and health monitoring; however, their widespread application is severely hindered by the intricate manufacturing process and electrochemical characteristics. To address this challenge, we combined both impregnation coating technology and conjugated electrospinning technology to develop an electro-assisted impregnation core-spinning technology (EAICST), which enables us to simply construct a sheath-core electrochemical sensing yarn (TPFV/CPP yarn) via coating PEDOT:PSS-coated carbon fibers (CPP) with polyurethane (TPU)/polyacrylonitrile (PAN)/poloxamer (F127)/valinomycin as shell. The TPFV/CPP yarn was sewn into the fabric and integrated with a sensor to achieve a detachable feature and efficiently monitor K + levels in sweat. By introducing EAICST, a speed of 10 m/h can be realized in the continuous preparation of the TPFV/CPP yarn, while the interconnected pores in the yarn sheath enable it to quickly capture and diffuse sweat. Besides, the sensor exhibited excellent sensitivity (54.26 mV/ decade), fast response (1.7 s), anti-interference, and long-term stability (5000 s or more). Especially, it also possesses favorable washability and wear resistance properties. Taken together, this study provides a crucial technical foundation for the development of advanced wearable devices designed for sweat analysis.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Cos =mentioning

confidence: 99%

Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical Performance

Ma,

Wu,

Luo

et al. 2024

ACS Appl. Mater. Interfaces

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An Undergraduate Practical for Evaluation of Powdery Battery Materials with a Metallic Cavity Electrode

Jiang,

Chen

2024

J. Chem. Educ.

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Selection and development of novel and better materials for batteries are essential for renewable energy storage and zero or low carbon emission. This experimental design aims first to demonstrate a novel copper metal cavity electrode (Cu-MCE) for the convenient and fast investigation of powdery electro-active materials in general and silicon-based negative electrode materials for lithium-ion batteries in particular. The voltammetric features of the Cu-MCE with and without the active materials under different experimental conditions were analyzed and compared in the context of the basic electrochemistry and materials science. It is hoped that this experiment can help students to understand the reaction principle of electroactive materials, analyze independently the charge storage performances, and select the essential materials in technical terms for the development of new energy storage materials and technologies.

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Porous Core–Shell Yarn in Wearable Electrochemical Sensors for Real-Time Sweat Monitoring

Wu,

Ma,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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Wearable sweat sensors have garnered substantial attention owing to their actual significance in the noninvasive and realtime monitoring of health conditions. However, it remains significantly challenging to efficiently construct a high-sensitivity sweat sensor with stable long-term sensing capability. Herein, we report an effective methodology based on wet-spinning/acid-etching technology to construct a porous core−shell yarn-based wearable electrochemical sensor. This strategy increases the inductive surface area of the ion concentration and facilitates signal transmission. As a result, the sensor demonstrates high sensitivity for monitoring K + and pH in sweat (54.89 mV/dec for K + and 40.2 mV/pH for pH). Furthermore, the sensors exhibit outstanding sensing stability, good long-term stability (>16 h), and satisfactory bending resistance (>1000 cycles). More importantly, the sensing yarns could be prepared at speeds of up to 500 m/h with a continuous preparation strategy, which enabled mass fabrication of the electrochemical sensor. Electrochemical sensors could serve as sweat-sensing systems for real-time health monitoring and hold great potential for the commercialization of health-detection technology.

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A comparative study on silicon-based negatrode materials in metallic cavity electrode and button half cell — Uncovering unseen microscopic and dynamic features

Cited by 3 publications

References 37 publications

Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical Performance

Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical Performance

An Undergraduate Practical for Evaluation of Powdery Battery Materials with a Metallic Cavity Electrode

Porous Core–Shell Yarn in Wearable Electrochemical Sensors for Real-Time Sweat Monitoring

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