Surfaces and Interfaces
·
2025
·
IF 6.3
Mihong Cao,Lucheng Li,Wenfeng Yuan,Jun Chen
In order to solve the problems of insufficient adsorption electrolyte capacity and small specific surface area caused by the smooth surface and few pores of Super P spherical conductive particles, this work uses concentrated sulfuric acid (H 2 SO 4 ) for surface etching of Super P conductive particles to explore the influence of different etching time on the micromorphology of SP conductive agent and the behaviors of LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM-523) batteries. After etched by concentrated H 2 SO 4 , the surface of SP conductive agent changes from “capillary” structure to fluffy “plush” structure, effectively improving the conductivity specific surface area of the conductive agent particles. Compared with the pristne SP-0H conductive agent, the batteries using 1.5% of concentrated H 2 SO 4 etched SP-1H, SP-2H and SP-20H conductive agent have smaller EIS impedance value, larger area of CV curves, and smaller potential difference of the redox peaks. As a result, the initial charging/discharging capacities of SP-1H, SP-2H and SP-20H conductive batteries were 178.7/183.0, 187.6/183.9, 178.9/180.8 mAh/g with corresponding ICE of 102.4%, 98.0% and 101.1% respectively, which were much higher than the pristine SP-0H conductive battery (182.0/173.7 mAh/g with ICE of 95.4%). In addition, the SP-1H, SP-2H and SP-20H batteries also show significantly improved cycle performance and rate cycle capabilities, showing more superior comprehensive behaviors, which can provide a new modification insights for the exploration of new conductive agent in NCM-523 of high-performance lithium ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH INNOVATIONS
·
2023
·
IF 0
Yunhang Liu,Jiale Han,Yurii Mishchenko,Andrii Butenko,Vladyslav Kovalenko,Hongyuan Zhao
Herein, a novel electrochemical sensor was designed for the sensitive determination of methyl parathion (MP) using the Super P Li carbon black@β-cyclodextrin (SPLCB@β-CD) decorated glassy carbon electrode (GCE). SPLCB with high electroactive area exhibited exceptional conductivity and good dispersive property, which is beneficial for forming the interlinked conductive network structure. β-CD could not only promote the uniform dispersion of SPLCB but also effectively realise the enrichment of MP molecules. Moreover, the existence of SPLCB could make up for the defect of poor conductivity of β-CD. Under the optimal experimental condition (pH = 7.0, enrichment time: 60 s). The collaborative cooperation of SPLCB and β-CD achieved the excellent MP detection property (LOD: 8.6 nM; concentration range: 0.01–10 μM). The SPLCB@β-CD/GCE sensor exhibited acceptable repeatability and reproducibility. In addition, the proposed sensor was successfully employed to detect MP in apple juice (Recoveries: 98.0–98.6%, RSD values: 3.68–4.63%).
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
ChemElectroChem
·
2018
·Vol. 5
·期 13
·1702-1707
·
IF 4.446
Jiaqi Wang,Junxiang Liu,Yichao Cai,Fangyi Cheng,Zhiqiang Niu,Jun Chen
Graphical Right off the batt : A Li@Super P composite anode with a high specific surface area is fabricated through a low-cost brushing method, which effectively decreases the interface impedance and overpotential of Li depositing/stripping. The anode can also mitigate the detrimental shuttling effect of I 3 − generated from LiI during the charging process. The combination of the protected Li anode and LiI mediator delivers superior Li−O 2 battery performance. Rechargeable Li−O 2 batteries represent a highly attractive battery technology, owing to a high theoretical energy density of 3500 Wh kg −1 , but they suffer from large charging polarization and lithium anode degradation on cycling. Herein, we report a Li−O 2 battery system with reduced polarization and a long lifespan, which is realized by using a novel Li@Super P composite anode integrated with lithium iodide in ether-based electrolyte. Coating a Super P carbon layer, with an optimal thickness of approximately 30 μm, onto the lithium anode results in a lowered interface impedance and a decreased Li depositing/stripping overpotential (<15 mV) over 300 cycles at 0.3 mA cm −2 . The Li−O 2 batteries assembled with the Li@Super P anode and LiI additive could mitigate the detrimental shuttling effect of I 3 − and deliver a high reversible capacity of 1000 mAh g −1 with a median charge voltage lower than 3.3 V after 50 cycles. This study provides a simple yet effective way to protect the lithium anode and design high-performance Li−O 2 batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2022
·Vol. 29
·期 3
·629-640
·
IF 2.523
Li Dongdong,Hu Xuli,Zhao Hongyuan,Ding Kunjie,Li Fang,Han Shixing,Wang Hongliang,Bai Lianyang,Liu Runqiang
Carbonaceous nanomaterials have exhibited huge practical prospects as conductive sensitizers for the modification of electrodes. In this work, the nanocomposite of graphitized multi-walled carbon nanotubes@Super P Li carbon nanoparticles (GCNTs@SP-Li) was designed via a simple ultrasonication-assisted strategy, and then the GCNTs@SP-Li/GCE sensor based on the synthesized GCNTs@SP-Li nanocomposite decorating glassy carbon electrode (GCE) was successfully applied in the sensitive detection of isoproturon (ISO). For the GCNTs@SP-Li nanocomposite, GCNTs with porous structure presented excellent adsorption property, which contributed to the preconcentration of ISO and facilitated the electrolyte penetration. Additionally, GCNTs possessed good electrical conductivity owing its higher graphitization degree. More importantly, the interconnected dot-line-like structure of GCNTs@SP-Li nanocomposite acted as conductive “highways” to remarkably reduce the electron transport distance, which could significantly accelerate the process of redox reaction. Benefiting from the synergistic effect of GCNTs and SP-Li, the optimized GCNTs@SP-Li/GCE sensor showed a low detection limit of 0.1653 μM in the linear concentration of 0.7–30 μM. Additionally, the proposed sensor exhibited satisfactory recoveries from 97.2 to 101.6% towards the determination of ISO in river water and tap water. This work offers a feasible and cost-effective idea in developing the high-performance ISO electrochemical sensor.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Dongdong Li,Hongyuan Zhao,Guoquan Wang,Jörg Rinklebe,Su Shiung Lam,Runqiang Liu,Lianyang Bai
The excessive diquat (DQ) residue poses a serious hazard to the ecological environment and human health. Herein, a simple, low-cost, and scalable ultrasonication-assisted strategy was proposed to fabricate the composite of Super-P carbon black nanoparticles dispersed palygorskite (Pal) nanofiber , which was employed to construct an electrochemical sensor for DQ determination. The Pal/Super-P/GCE sensor exhibited ultrasensitive determination performance with a low detection limit (0.1514 nM) and high sensitivity (44.141 μA μM −1 ) in the linear DQ concentration range of 0.00050–1.0 μM. The recoveries of the constructed sensor ranged from 95.6 % to 100.3 % when applied to detect DQ in river water, potato, and cucumber. The above enhanced DQ detection performance was primarily due to the synergistic effect of Pal and Super-P. Pal with high adsorption ability and excellent biocompatibility could provide numerous attachment sites for DQ adsorption due to the superior ion-exchange property and plentiful Si-OH on its surface. Super-P with pearl-chain like structure contributed to forming an interconnected conductive network, thus facilitating the homogeneous dispersion of Pal and compensated for the poor conductivity of Pal. This study provides a valuable reference in developing clay-based nanocomposite via ultrasonication-assisted strategy to achieve the application of electrochemical sensor at the ultra-trace levels detection of pesticides.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 7
·3294-3303
·
IF 2.7
Xiaobo Li,Kaifeng Yang,Fangming Han,Yafeng Jin,Haonan Zhang,Heng Gao
The coexistence of dopamine (DA) and acetaminophen (AC) in living organisms leading to an unexpected mutual interference in electrochemical detection techniques demands a simultaneous, selective as well as simple and cost-effective approach for DA and AC. Herein, a novel nanocomposite was fabricated by integrating carbonized ZIF-67 (C-ZIF-67) with carbon black Super P (SP) and introduced onto a glassy carbon electrode (GCE) to form a highly sensitive electrochemical sensor (C-ZIF-67/SP/GCE) for the simultaneous determination of DA and AC. The well-prepared nanomaterial presents a polyhedral morphology interlaced on a reticulated chain. C-ZIF-67/SP/GCE shows excellent electrocatalytic activity towards the redox reactions of DA and AC in a dynamic linear range up to 100 μM, which could be attributed to the synergistic effect of the large specific surface area of C-ZIF67 and the excellent conductivity of SP. The limits of detection (LODs, S/N = 3) of 0.58 μM and 0.27 μM were obtained for DA and AC, respectively. Moreover, the developed sensor exhibited good reproducibility and long-term stability. The C-ZIF-67/SP/GCE was employed to analyze DA and AC biomedical samples and satisfactory recoveries were achieved. This approach provides a simple, easy and sensitive method to detect DA and AC simultaneously and selectively.
研究领域:
分析化学
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2024
·
IF 9.6
Liang Xin,Zhao Dong-Qing,Huang Qian-Qian,Liang Sheng,Wang Li-Li,Hu Lei,Liu Ling-Li,Hu Kun-Hong,Deng Chong-Hai,Cheng Sheng,Zhu Er-Tao,Deng Hua-Xia
Lithium–sulfur battery is one of the most promising battery systems for industrialization due to its high theoretical specific capacity and high energy density. Nonetheless, the “shuttle effect” has restrained the advancement of lithium–sulfur batteries. In this work, a gradient-structured nanofiber membrane with pure gelatin on one side and Super P-MoO 2 /MoS 2 -gelatin on the other side was created using a multi-step electrostatic spinning technique, which was applied for multi-functional separator for lithium–sulfur batteries. The pure gelatin layer facing the anode side primarily homogenizes the lithium flux, whereas the Super P-MoO 2 /MoS 2 -gelatin layer facing the cathode side primarily adsorbs polysulfides by physical and chemical adsorption and enhancing polysulfide conversion efficiency. The findings demonstrate that even after 150 cycles at 0.2C, the lithium–sulfur battery can still sustain a discharge-specific capacity of 572.3 mAh·g −1 . When used with Li||Li symmetric batteries, it has a cycle life of more than 1200 h. The commercialization of lithium–sulfur batteries is given a fresh idea by this straightforward preparation technique. Graphical abstract
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yafeng Jin,Ruilong Zhang,Xinyue Song,Didi Tong,Haibo Shang,Fangming Han,Xiaobo Li,Guangri Xu
Elevated levels of methylglyoxal (MG) in the human body are linked to various metabolic disorders. Therefore, developing efficient methods for detecting MG in food and biological fluid is of significant importance. In this work, a high-catalytic-activity conductive copper-based metal–organic framework (Cu 3 (HHTP) 2 ) was synthesized via a hydrothermal method, and a sensitive electrochemical sensor based on a glassy carbon electrode (GCE), denoted as Super-P/Cu 3 (HHTP) 2 /GCE, for monitoring methylglyoxal (MG) was constructed using a composite of Cu 3 (HHTP) 2 and carbon black Super-P. Leveraging the catalytic activity of Cu 3 (HHTP) 2 and the enhanced conductivity provided by Super-P, the sensor demonstrated a wide linear detection range (1–500 µM) and a low detection limit (0.0275 µM). Moreover, it was successfully applied to the determination of MG in milk, beer, urine, and human serum samples, achieving recoveries ranging from 91.7 % to 115.7 %. This work opens up new avenues for the development of innovative electroanalytical tools for MG monitoring in both food and biological fluid.
研究领域:
分析化学
·
生物医学工程
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2019
·
IF 9.518
Xin Zhang,Guoming Xie,Dan Gou,Peng Luo,Yuan Yao,Hui Chen
Pseudomonas aeruginosa ( P. aeruginosa ) is one of the most intractable multidrug-resistant bacteria of nosocomial infections. The conventional detection methods for P. aeruginosa are time-consuming or low detection sensitivity. Here, a novel enzyme-free electrochemical biosensor was constructed to detect P. aeruginosa rapidly and sensitively. Firstly, the ZrMOF with large surface area was synthesized, which offers excellent adsorption. Further, it was connected with a specific amount of Cu 2+ to synthesize Cu-ZrMOF with high catalytic activity . Then the [email protected] @DNA nanocomposite was composed and served as the signal probe to catalyse the decomposition of H 2 O 2 . Moreover, high conductive Super P was introduced to increase the electron transfer for satisfactory detection sensitivity. The proposed biosensor was constructed and used to quantify P. aeruginosa with a wide linearity range of 10–10 6 CFU mL −1 and a low limit of detection of 2 CFU mL −1 (S/N = 3). Compared with conventional methods, the new method of present biosensor is more sensitive, and less time-consuming (only within 120 min). The analytical performance evaluation indicated that the biosensor exhibits good reproducibility and specificity. Finally, the biosensor was successfully applied to quantify P. aeruginosa in spiked urine samples. These results show that the proposed electrochemical biosensor might be a potential laboratory tool for detecting P. aeruginosa in the clinic.
研究领域:
生物传感器
·
微生物学
·
电化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2013
·Vol. 18
·期 3
·739-745
·
IF 2.279
Song Ming,Zhu Ding,Zhang Lei,Wang Xiaofei,Mi Rui,Liu Hao,Mei Jun,Lau Leo W. M.,Chen Yungui
Discharge/charge characteristics of Li–O 2 batteries at a test temperature of 343 K, using Super P carbon electrodes, have been explored in this paper based on ether-based electrolytes. Compared with ambient temperature, high temperature significantly influences the discharge/charge process of Li–O 2 batteries since discharging capacity increases at about 80 % and charging voltage plateau decreases from 4.2 to 3.5 V. The stability of stainless steel mesh with electrolyte at 343 K has been researched using cyclic voltammetry. This paper lays the bases for further research on Li–O 2 batteries in high-temperature areas.
研究领域:
电化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Zilong Chen,Zhenbao Zhang,Peng Liu,Shaofeng Wang,Wenhua Zhang,Dengjie Chen
In this work, we have prepared the carbon-LiNi 1/3 Co 1/3 Mn 1/3 O 2 composite through a simple and cost-effective method at a relatively low temperature (i.e., 180 °C) via spray drying. Nitric acid-treated commercial Super P powder could be well dispersed among LiNi 1/3 Co 1/3 Mn 1/3 O 2 particles, while untreated Super P powder is particularly difficult to be uniformly distributed. The obtained I (003) /I (104) of the treated Super P-LiNi 1/3 Co 1/3 Mn 1/3 O 2, according to the X-ray diffraction pattern, is higher than 1.70, suggesting that the highly ordered structure of LiNi 1/3 Co 1/3 Mn 1/3 O 2 is maintained after compositing via the proposed approach. The resulted cathode material shows superior rate capability and stability, delivering a specific capacity of 115.7 mAh g −1 even at 1.5 A g −1 , and a capacity retention of 87.0% after 500 cycles. In contrast, pure LiNi 1/3 Co 1/3 Mn 1/3 O 2 delivers only 57.4 mAh g −1 at 1.5 A g −1 and remains 35.2% after 500 cycles. Carbon-coated LiNi 1/3 Co 1/3 Mn 1/3 O 2 prepared from the carbonization of sucrose delivers as high as 141.0 mAh g −1 at 0.1 A g −1 , but remains only 47.5% after 100 cycles. The enhancement of rate capability and stability from the treated Super P-LiNi 1/3 Co 1/3 Mn 1/3 O 2 is due to the facilitation of the electron conduction by introducing homogenously distributed carbon, and thanks to the well-maintained ordered structure of LiNi 1/3 Co 1/3 Mn 1/3 O 2 .
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 POWER SOURCES
·
2024
·
IF 8.1
Wenhui Geng,Xinmeng Hu,Qinhua Zhou,Yinhang Zhang,Bin He,Zhiliang Liu,Kuikui Xiao,Dong Cai,Shuo Yang,Huagui Nie,Zhi Yang
Silicon (Si) has been regarded as a candidate for high-energy-density lithium-ion batteries (LIBs) because of its excellent specific capacity. Binders, as an essential component in Si anodes, play a key role in enhancing the electrochemical performance of LIBs. In this study, a multifunctional binder named LP19 simultaneously possessing high electron conductivity, high Li-ion conductivity as well as ameliorative mechanical performances was synthesized by assembling the lithiated PAA (LiPAA) and highly conductive PEDOT:PSS molecules. The lithiation treatment of PAA is conducive to the transport of lithium ions, while the double conductive network constructed by conductive PEDOT:PSS and Super P guarantees the stable electric connectivity during lithiation and delithiation processes. Moreover, the optimization of the internal configuration of the molecules realizes the structural and cycling stability of the Si anode. As a consequence, the Si anode utilizing this binary and multifunctional conductive binder demonstrated pronounced cycling stability (2165 mAh g −1 after 200 cycles) and rate performance (1750 mAh g −1 at 8.0 A g −1 ). This work provided a novel design strategy of polymeric binders to promote progress toward high-performance LIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 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）