FOOD CHEMISTRY
·
2025
·
IF 9.8
Hui Wang,Jiejun Li,Pengcheng Zhao,Junjie Fei,Yixi Xie
Herein, a sensitive and selective electrochemical sensor modified with CuS doped highly conductive carbon materials (HCC) were succes s fully used to detect vanillin (VAN), which manufactured in a low temperature one step process. Experimental analysis by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) under optimised conditions revealed excellent rate characteristics due to sub-micron spherical particles on the surface of CuS nanoparticles and synergistic effects with the excellent electrical conductivity of HCC. The prepared functionalized CuS-HCC/GCE has an ultra high specific surface area (10.85 mm 2 ) and selective VAN determination, whose detection limit and linear range of VAN sensor are 61 pM and 0.1 nM-120 μM respectively, and has a terrific recovery rate in food samples (96.7 % to 103.8 %). These results show that this work has provided a new promising food sensor for detecting VAN.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 53
·47723-47729
·
IF 3.289
Kai Wang,Wenju Ren,Jinlong Yang,Rui Tan,Yidong Liu,Feng Pan
We report composite electrodes with Li2FeSiO4 (LFS) nanocrystals wrapped in three different types of conductive carbon such as Acetylene Black (AB), carbon nanotubes (CNT) and Ketjen Black (KB) to demonstrate depolarization effects on the electrochemical performance of Li-ions batteries. KB with a nanoporous structure and the largest surface area enabled the formation of the best electronic conductive-network with excellent capacity on the interface of LFS nanoparticles, showing reversible electrochemical activity. Compared to the electrodes of LFS wrapped in AB and CNT, the polarization of LFS particles wrapped in KB was reduced significantly due to high conductivity of the electrode, resulting in an increase of about 59.0% in the reversible capacity (269.0 mA h g−1, corresponding to 1.62 Li-storages) and obvious enhancement in the rate performance. By using the electrochemical analysis methods, we demonstrated the insight of discharge of more than one lithium ion at different voltages in the LFS@KB vs. LFS@AB and LFS@CNT electrodes, including interface capacity, Fe3+/Fe2+ and Fe4+/Fe3+ redox, respectively. The fundamental mechanism of enhanced electrochemical performance of LFS by creating a depolarization environment with optimized conductive carbon provides useful guidance to the future design of high performance LFS cathodes for LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2018
·
IF 0
De Gao,Rui Du,Chenggang Zhou,Bo Han,Kaisheng Xia,Qiang Gao,Jinping Wu
Transition metal cyanides are considered as a promising cathode candidate of sodium-ion batteries. Herein, we reported a direct implementation of commercial K 3 Fe(CN) 6 (KFC) as active cathode material of SIBs by a simple recrystallization method. Our results suggest that by integrating conductive carbons (SuperP, abbreviated as SP) and multi-walled carbon nanotubes (CNTs) with KFC, an efficient conducting network could be well established for the utilization of KFC active components, thereby endows excellent cyclic and rate performances. Specifically, the KFC/SP/CNTs composite delivers its theoretical capacity of 81 mAh g −1 at 0.1C, and a reversible capacity of 75.6 mAh g −1 at 1C which maintains 62.6 mAh g −1 after 500 cycles. At ultrahigh rate of 12C, the capacity retention can reach 68% of initial. Our effort suggests that direct implementing industrial KFC as cathode materials for SIBs is highly feasible, which may provide a low-cost cathode candidate of sodium-ion batteries for large-scale energy storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kang Xia,Zhengyin Yao,Pengfei Zhao,Zhen Liu,Shuo Zhao,Zheng Peng,Peng Zhang
The challenge of high-rate charging remains a critical barrier for the widespread adoption of lithium-ion batteries (LIBs). In this study, we address this issue by employing a novel binder, poly(methyl methacrylate)-grafted-natural rubber (PMMA- g -NR), for lithium iron phosphate (LFP) cathodes. This amphiphilic binder not only improves ionic and electronic conductivities but also prevents macro-phase segregation of LFP and conductive carbon, ensuring uniform distribution. The unique microphase morphology, governed by the “like dissolves like” principle, enriches conductive carbon in NR domains and LFP particles in PMMA domains, enhancing the synergy between the ionic and electronic transport pathways. The resulting LFP||Li cells exhibit exceptional rate performance, maintaining 64% capacity retention after 1200 cycles at 10C. Furthermore, the binder’s excellent elasticity preserves electrode integrity during repeated cycling. This work highlights the critical role of binder design in advancing high-rate charging capabilities, offering a scalable solution to improve the fast-charging performance and longevity of LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 5
·2652-2662
·
IF 2.047
Xiao Zhen,Guo Rui,He Xinping,Gan Yongping,Zhang Jun,Huang Hui,Zhang Wenkui,Wang Bingjia,Han Yi,Xia Yang
Carbon-based conductive polymer composites are thriving as promising electrothermal materials for a vast array of applications. However, the low working temperature (< 100°C) of most carbon-based conductive polymer composites due to the low melting point and inferior temperature resistance of polymer matrix severely restricts their high-temperature applications. Herein, a series of thin electric heating films composed of highly thermally stable polybenzimidazole (PBI) as polymer matrix and low-cost carbon black nanoparticles (Super P, SP) as conductive fillers are successfully developed to significantly increase the maximum working temperature as high as >200°C under relatively low applied voltage. The morphology, microstructure, electrical properties, and electrothermal behavior of the PBI/SP composites are systematically studied as a function of SP content. By introducing 15–25 wt.% SP conductive fillers, SP nanoparticles with uniform spatial dispersion are tightly anchored on the surface and tip of fiber-like villous PBI matrix, forming continuous highly conductive networks. However, the conductive filler content exceeds to 30 wt.%, and SP nanoparticles tend to locally clump together in aggregation, resulting in potential safety issues. Impressively, PBI/SP composite with 25 wt.% SP content (PBI/SP-25) exhibits superior electrothermal performance, including rapid temperature responsiveness, high maximum working temperature, superior heating uniformity, and remarkable electrothermal reproducibility. As an integrated thin-film heater for water boilers, PBI/SP-25 electrothermal film heats 100 ml of water to 99.5°C within 4 min at 25 V, demonstrating great potential in household electrical appliances.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 50
·32448-32458
·
IF 4.036
Yanli Dou,Shixiang Sun,Shanshan Lu,Weiguo Yao,Dongbo Guan
Conductive carbon black (CCB) is an important filler in stretchable conductive silicone rubber (CSR) composites. However, due to the active oxygen-containing groups on CCB, introducing it into silicone rubber (SR) may cause SR to not completely cure. Surface modification of CCB may ease the problem but at the cost of reducing the electrical conductivity of pristine CCB. In this work, the curing and crosslinking performance of CCB/SR is detected in detail, the hydroxyl groups (–OH) carried by CCB can react with the silicon–hydrogen group (Si–H) with the existence of Pt catalyst, causing insufficiency of the hydrosilylation reaction thus hindering the solidifying process of silicon rubber. To take advantage of this reaction, more hydrogen silicone oil (PHMS) possessing silicon–hydrogen bonds is introduced into the system to improve the curing degree as well as fix the CCB in the crosslinked network. Due to the lock-in effect of CCB, the resistance of CSR samples is stable after several hundred bending cycles, and the composite's tensile strength is three times that of the pure SR samples. Besides, the size of the composites can expand to dozens of centimeters or even a few meters with uniform electric conductivity. This composite has resistance as low as 10.20 Ω and is suitable to make electroplating mold, and a rapid plating rate of 2.4 mm/24 h can be achieved. Meanwhile, the overall properties make this CSR composite have potential applications in mold manufacture, flexible electronics, and other related fields.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-6
·
IF 4.011
Wang Rui,Mo Hanxiao,Li Shuai,Gong Yansheng,He Beibei,Wang Huanwen
In this paper, the influences of conductive carbons on the red phosphorus (P) composites in sodium-ion batteries are studied. Electrochemical testing results show that Ketjen Black makes the P composites present much better cycling performances. Electrochemical impedance spectra (EIS) results indicate that when Ketjen Black is used, the total resistance of the electrode can be decreased. Since Ketjen Black is a low-cost and commercially available material, our results suggest that Ketjen Black might be a promising conductor for the alloying anodes such as P in sodium-ion batteries.
研究领域:
材料科学
·
能源研究
✓ 已验证
DOI
高影响因子
Frontiers of Environmental Science & Engineering
·
2019
·Vol. 14
·期 2
·1-16
·
IF 3.883
Wang Xiangyu,Xie Yu,Yang Guizhen,Hao Jiming,Ma Jun,Ning Ping
The secondary pollution caused by modification of an electrode due to doping of harmful materials has long been a big concern. In this study, an environmentally friendly material, conductive carbon black, was adopted for modification of lead dioxide electrode (PbO 2 ). It was observed that the as-prepared conductive carbon black modified electrode (C-PbO 2 ) exhibited an enhanced electrocatalytical performance and more stable structure than a pristine PbO 2 electrode, and the removal efficiency of metronidazole (MNZ) and COD by a 1.0% C-PbO 2 electrode at optimal conditions was increased by 24.66% and 7.01%, respectively. Results revealed that the electrochemical degradation of MNZ wastewater followed pseudo-first-order kinetics. This intimates that the presence of conductive carbon black could improve the current efficiency, promote the generation of hydroxyl radicals, and accelerate the removal of MNZ through oxidation. In addition, MNZ degradation pathways through a C-PbO 2 electrode were proposed based on the identified intermediates. To promote the electrode to treat antibiotic wastewater, optimal experimental conditions were predicted through the Box-Behnken design (BBD) method. The results of this study suggest that a C-PbO 2 electrode may represent a promising functional material to pretreat antibiotic wastewaters.
研究领域:
环境科学
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 39
·2302706
·
IF 13.3
Xiaofei Huang,Kehao Tao,Tianli Han,Jinjin Li,Huigang Zhang,Chaoquan Hu,Junjie Niu,Jinyun Liu
Due to the relatively high capacity and lower cost, transition metal sulfides (TMS) as anode show promising potential in sodium-ion batteries (SIBs). Herein, a binary metal sulfide hybrid consisting of carbon encapsulated CoS/Cu 2 S nanocages (CoS/Cu 2 S@C-NC) is constructed. The interlocked hetero-architecture filled with conductive carbon accelerates the Na + /e − transfer, thus leading to improved electrochemical kinetics. Also the protective carbon layer can provide better volume accommondation upon charging/discharging. As a result, the battery with CoS/Cu 2 S@C-NC as anode displays a high capacity of 435.3 mAh g −1 after 1000 cycles at 2.0 A g −1 (≈3.4 C). Under a higher rate of 10.0 A g −1 (≈17 C), a capacity of as high as 347.2 mAh g −1 is still remained after long 2300 cycles. The capacity decay per cycle is only 0.017%. The battery also exhibits a better temperature tolerance at 50 and −5 °C. A low internal impedance analyzed by X-ray diffraction patterns and galvanostatic intermittent titration technique, narrow band gap, and high density of states obtained by first-principle calculations of the binary sulfides, ensure the rapid Na + /e − transport. The long-cycling-life SIB using binary metal sulfide hybrid nanocages as anode shows promising applications in versatile electronic devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 8
·5334-5345
·
IF 4.682
Hao Yi,Huang Jieyu,Liao Shiqin,Chen Dongsheng,Wei Qufu
The output performance of the triboelectric nanogenerator (TENG) greatly depends on the surface charge density. However, the surface charge dissipation and the electron transfer would result in a sharp decrease in the output performance. In this work, we proposed a functional multilayer negative structure of TENG, using polystyrene interface material to provide high electron trapping holes and conductive carbon black doped polystyrene to accelerate charge transfer rate to improve the charge density further. It was indicated that the open-circuit voltage generated by the TENG with the polystyrene layer was 460% of that of the PVDF single-layer structure and was 694% enhanced by introducing conductive carbon black in the multilayer performance-enhanced TENG (PE-TENG). The peak output power was up to 52.3 μW in a contact area of 3 × 3 cm 2 . In short, it proves an effective way to improve the output performance of flexible triboelectric nanogenerators with comprehensive applications in wearable energy sources and human health monitoring sensors.
研究领域:
材料科学
·
能源技术
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Cheng Yongchao,Tong Feng,Huang Sheng,Chen Zheng,Zhao Yulong,Gu Xiuquan
The monitoring of body temperature is critical for assessing the health conditions of a critically ill patient. Flexible temperature sensors provide direct contact with human skin, ensuring stable and continuous monitoring of a person’s body temperature. In this study, an affordable and readily available polyvinylidene fluoride (PVDF) was used as the polymer matrix for fabricating a wearable temperature sensor. Through a simple solution mixing process, both conductive carbon black (CB) and ionic liquid were uniformly dispersed in the flexible PVDF composite for enhancing its conductivity and stability. The influence of CB addition amounts was investigated with respect to surface morphology, microstructure, and properties. The results showed that the composite with 6% CB addition had the highest sensitivity of 3.07%/°C, with a minimum detectable temperature difference of 1°C and short response/recovery times of 6.66 s/15.63 s at Δ T = 10°C. Additionally, the response/recovery curves of this device demonstrated good cycle stability. Furthermore, the sensor retained its superior performance even after extended operational periods, confirming the long-term stability and reliability of this thin-film sensor. The sensor shows great promise for physiological signal detection and holds substantial potential for applications in wearable electronics. This work offers a new possibility for the low-cost, large-scale fabrication of flexible temperature sensors in the future. Graphical
研究领域:
材料科学
·
生物医学工程
·
传感技术
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2020
·
IF 2.65
Shang Wu,Yang Xue,Quanlu Yang,Qinzheng Hu,Tao Cui,Qiong Su,Fenping Yin,Yanbin Wang,Huiying Zhan
The electrode materials with core-shell heterostructure draw researchers' attention in the fabrication of supercapacitors (SCs), which can reduce cost and prolong service lifespans. Herein, nickel-cobalt selenide nanoparticles , which are anchored on carbon microsphere to form core-shell heterostructure composite, exhibit excellent specific capacitance (960 F g −1 ) and superior cycling lifetime (85% after 2000 cycles). Furthermore, a new asymmetric supercapacitor (ASC) is created by utilizing C-20@(Ni, Co) 0.85 Se and AC as cathode and anode . The C-20@(Ni, Co) 0.85 Se//AC ASC exhibits the largest energy density of 34.44 W h kg −1 at a power density of 1125.23 W kg −1 and superior cycling lifetime with 81.5% of capacitance retention after 5000 cycles. Thus, C-20@(Ni, Co) 0.85 Se//AC ASC is known as potential electrode materials for ASC devices.
研究领域:
材料科学
·
电化学
✓ 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）