ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 51
·2306868
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IF 19
Zhipeng Jiang,Tao Yang,Chen Li,Jiahang Zou,Hanxu Yang,Qingan Zhang,Yongtao Li
Ether-based electrolytes have high ionic conductivity and good stability toward the lithium metal anode relative to carbonate-based electrolytes, but they typically exhibit poor oxidation stability (<4 V vs Li + /Li). Most approaches aimed at enhancing the oxidative stability of ether-based electrolytes, such as “salt-in-solvent” and “weakly solvating” strategies, often sacrifice their inherent advantage of high ionic conductivity. Herein, this article proposes a cost-effective synergistic additive strategy by co-adding LiNO 3 and vinylene carbonate (VC) to achieve an optimized ether-based electrolyte (OEE) that simultaneously offers high Li-ion (Li + ) conductivity (11.52 mS cm −1 at 20 °C) and high-voltage stability (4.4 V). LiNO 3 and VC can enter the inner solvation shell of the electrolyte, preferentially participating in the film-forming progress at the electrode surface, leading to the formation of a unique organic–inorganic bilayer interfacial protective layer. This layer could effectively suppress electrolyte side reactions and enhance electrode stability. As a result, the 4.4 V Li-LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811) full cells assembled with the OEE exhibit stable cycling performance at both room temperature and low temperature. This work provides a new approach to the design of ether-based electrolytes for high-voltage lithium metal batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Boyang Zhang,Xiaola Li,Ziyang Liang,Wenzhao Huang,Yuqing Liu,Chenyu Liu,Zhan Lin,Dong Luo
Lithium-rich manganese-based oxides (LMOs) are regarded as promising cathodes for next-generation high-energy Li-ion batteries due to their ultrahigh discharge capacity (>250 mAh/g) and low cost. However, their practical application is significantly hindered by issues such as transition metal dissolution and structural evolution under high working voltage. In this study, a stable SEI protective film based on carbon phosphorus is successfully constructed by introducing two solid–liquid interface-stabilizing additives, ethylene carbonate (VC) and tri(pentafluorophenyl)borane (TPFPB), into the base electrolyte. This significantly enhances the interface stability between the lithium-rich manganese-based cathode material and the electrolyte, suppresses the generation of harmful HF and the dissolution of transition metals, thereby improving the overall stability of the electrode–electrolyte system. Experimental results indicate that after 200 cycles, the capacity retention of the LMO cathode is increased by 21% due to the significant suppression of nanopore formation and phase transitions. This additive optimization strategy provides promising technical guidance for the application of lithium-rich manganese-based oxide cathode materials in next-generation high-energy-density rechargeable batteries.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2018
·Vol. 34
·期 2
·260-268
·
IF 1.248
Ren Hejun,Ma Taigang,Zhao Jian,Zhou Rui
A simple and efficient colorimetric biosensing for hydrogen peroxide and glucose with peroxidase-like vitamin C(V c ) functionalized Fe 3 O 4 magnetic nanoparticles(V c Fe 3 O 4 MNPs) as a catalyst is reported. Compared with Fe 3 O 4 MNPs and other catalysts, V c Fe 3 O 4 MNPs exhibited superior catalytic properties. Kinetic studies indicated that vitamin C incorporated on Fe 3 O 4 MNPs improved the affinity toward H 2 O 2 . As low as 0.29 μmol/L H 2 O 2 can be detected with a wide linear range of 0.5―100 μmol/L H 2 O 2 ; moreover, as low as 0.288 μmol/L glucose can be detected with a linear range of 0.5―25 μmol/L glucose. The detection method was highly sensitive in sensing H 2 O 2 and glucose. The robustness of V c Fe 3 O 4 MNPs rendered them suitable for wide ranging applications.
研究领域:
生物化学
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纳米医学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
·
2021
·Vol. 45
·期 12
·e16074
·
IF 2.19
Xia Li,Guozhu Zhang,Jing Li,Tiemin Jiang,Huiying Chen,Peijun Li,Yuan Guan
In this paper, water extracted polysaccharides from Passiflora edulis peel (WPEP) was degraded by ascorbic acid-hydrogen peroxide (Vc-H 2 O 2 ). The degradation conditions were optimized by response surface methodology (RSM). The 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging rate of degraded WPEP (DWPEP) was 45.38% under optimal conditions (Vc-H 2 O 2 concentration 9.3 mM, temperature 52°C, time 1.4 hr). And the molecular weight (Mw) of DWPEP (38 kDa) was 32.20% (WPEP was 118 kDa). WPEP and DWPEP were mainly composed of galacturonic acid. Their backbone structures, functional groups and β-glycoside linkage patterns are similar, however, still with some differences. Antioxidant tests showed that WPEP and DWPEP had strong DPPH radical scavenging ability (93.03% and 81.70%), moderate hydroxyl radical scavenging ability (53.99% and 26.59%), and low reducing power (0.698 and 0.52). In conclusion, these differences in structures and properties may be an important factor affecting the antioxidant activity of polysaccharides. Novelty impact statement In this paper, the Vc-H 2 O 2 system was used to degrade the polysaccharides extracted from Passiflora edulis peel. The molecular weight, intrinsic viscosity, and rigid conformation changed obviously. The degraded polysaccharides are valuable to expand their application and to improve the practical efficacy.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Zandong Zhang,Jing Xin,Zuobo Yang,Weixuan Liu,Hongchen Liu,Jimmy Yun,Jie Zhang
This study developed a ternary Ni₆Fe₂Co₂/NF-VC nanoparticle cluster material, aiming to enhance the efficiency of oxygen evolution reaction (OER) and achieve excellent water decomposition performance. A self-supported anode was fabricated via one-electrode reduction synthesis for the OER active site, which exhibits significant catalytic activity due to its unique surface restructuring process and controlled electronic structure. The results demonstrate that this anode has outstanding intrinsic catalytic activity in anion exchange membrane (AEM) electrolysis: at 10 mA/cm² current density, the overpotential is as low as 203 mV, with a Tafel slope of 19.69 mV/dec. Under industrial testing conditions (500 mA/cm²), the anode requires only 1.98 V to operate stably and maintains stable operation for 50 hours under continuous cycling. Pressure loss analysis and electrochemical impedance spectroscopy (EIS) studies reveal that the rate-controlling step of the OER reaction is the mass transfer process. The improved catalytic material achieves enhanced dynamic and transport performance through the construction of favorable gas-liquid transfer channels and electronic transfer pathways, effectively reducing kinetic and diffusion limitations in the electrolysis system. This study provides a novel approach for designing highly efficient and stable water decomposition catalysts.
研究领域:
电化学
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材料科学
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能量转换
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催化
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2013
·Vol. 51
·期 19
·4088-4094
·
IF 3.543
Zhihai Hao,Jiang Zhang,Hou Chen,Delong Liu,Dongju Wang,Huanying Qu,Jimei Lang
A novel catalyst system based on La(0)/hexamethylenetetramine (HMTA) complexes is used for single electron transfer-living radical polymerization (SET-LRP) of acrylonitrile (AN) in the presence of ascorbic acid (VC) with carbon tetrachloride (CCl 4 ) as a initiator and N , N -dimethylformamide (DMF) as a solvent. Compared with SET-LRP of AN in the absence of VC, monomer conversion is markedly increased. SET-LRP of AN in the presence of VC is also conducted in the presence of air. The kinetic studies show that the polymerizations both in the absence of oxygen and in the presence of air proceed in a well-controlled manner. With the respect to the polymerization in the absence of oxygen, the polymerization in the presence of air provides slower reaction rate and broader polydispersity. Effects of amount of VC, La, CCl 4 , and are investigated in detail. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013 , 51 , 4088–4094
研究领域:
高分子化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Qiujun Wang,Nana Bai,Yelun Xin,Xiaomeng Fan,Di Zhang,Zhaojin Li,Qujiang Sun,Huilan Sun,Bo Wang,Guoxu Wang,Li-Zhen Fan
LiCoO 2 (LCO) is a prominent high-voltage cathode material due to its exceptional energy density and impressive theoretical specific capacity of 274 mAh g −1 . However, challenges such as irreversible structural phase transitions, loss of reactive oxygen, and cobalt dissolution can lead to unstable interfaces between the electrolyte and the LCO cathode. In this study, sulfolane (SUL)-based composite polymer electrolytes (CPEs) were synthesized through in-situ polymerization, and the LCO cathode was modified using vinylidene carbonate (VC) and lithium difluoro(oxalato)borate (LiDFOB). The synergistic effects of SUL and VC/LiDFOB facilitated the formation of a more stable cathode-electrolyte interface (CEI) layer. Consequently, the Li/EFHTL-15 %SUL/LCO-VC-LiDFOB cell demonstrated excellent reversible cycling performance, achieving 86.36 % capacity retention after 300 cycles at 0.5C within a voltage range of 2.8–4.4 V at 25 ℃. This work provides a viable approach for enhancing the interface stability of the LCO cathode in CPEs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Huadan Zhang,Congcong Sun,Kailin Li,Xianliang Luo,Zebin Guo,Song Miao,Baodong Zheng
Fucoidan, a marine-derived sulfated polysaccharide, possesses a diverse range of bioactive properties. This study aimed to evaluate the physicochemical characteristics and anti-inflammatory activity of Laminaria japonica fucoidan (LJF) and degradation fractions (DLJF-Ts) obtained through ultrasonic-assisted H 2 O 2 /Vitamin C (VC) treatment (1, 3, and 6 h). The molecular weights of LJF, DLJF-1, DLJF-3, and DLJF-6 were 225, 101, 45, and 31 kDa, respectively. The fucose was the major monosaccharide, and structural analysis demonstrated that the main functional groups were unchanged, while their sheets changed from larger to smaller. Meanwhile, the DLJF-3 showed the superior effects of in vitro antioxidant and anti-inflammatory. Furthermore, after 48 h of colitis mice fecal fermentation, the DLJF-3 was metabolized by gut microbiota, leading to a marked elevation in short-chain fatty acids. The content of Bacteroides increased and the Desulfovibrio reduced significantly. Overall, the obtained results revealed that DLJF-3, as the anti-inflammatory agent, could be used for the development of functional foods and healthcare products.
研究领域:
海洋生物技术
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食品科学
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药理学
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免疫学
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
Heliyon
·
2024
·
IF 3.4
Yunqi Tang,Ankun Zhou,Shaodong Zhou,Jiancheng Ruan,Chao Qian,Chen Wu,Linlin Ye
Vitamin C (VC) possesses antioxidant and whitening effects. However, its effectiveness is hindered by challenges such as instability, impaired solubility, and limited bioavailability hinder. In this study, VC was encapsulated in nanoliposomes by primary emulsification and high-pressure homogenization. The VC nanoliposomes were comprehensively characterized for their microscopic morphology, particle size, polydispersity index (PDI), and encapsulation efficiency (EE). Orthogonal experiments were designed to optimize the optimal preparation process, and the antioxidant activity, whitening efficacy, transdermal absorption, and stability of VC nanoliposomes were evaluated based on this optimized process. The findings demonstrated the high reproducibility of the optimal process, with particle size, PDI, and EE values of 113.502 ± 4.360 nm, 0.104 ± 0.010, and 56.09 ± 1.01 %, respectively. Differential scanning calorimetry analysis showed effective encapsulation of VC nanoliposomes with better thermal stability than aqueous VC solution. Besides, the VC nanoliposomes demonstrated excellent antioxidant and whitening effects in efficacy experiments, stronger skin permeability in transdermal experiments and fluorescence tracking. Furthermore, storage stability tests indicated that the VC in nanoliposomes remained relatively stable after 60 days of storage. These findings highlighted the potential use of VC nanoliposomes in a wide range of applications for the cosmetic market, especially in the development of ingredients for skin care products.
研究领域:
药剂学
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化妆品科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Packaging and Shelf Life
·
2024
·
IF 8.5
Guang Wu,Shuangdi Hou,Qingchun Yin,Li Guo,Hao Deng
In this study, a series of chitosan/copper nanocomposites (CS/Cu-NCs) served as catalyzers for VC to remove O 2 in food packages were successfully synthesized, characterized, and further utilized to prepare an active modified O 2 /CO 2 preservative. Transmission electron microscope, ultraviolet-visible, and infrared spectra confirmed CS/Cu-NCs #1–3 were successfully synthesized. Three components of the preservative were optimized, and the best formulation was: CS/Cu-NCs #2: VC: NaHCO 3 =0.5:1.5:0.15. It maintained relatively stable O 2 /CO 2 in the package at 10℃. Fresh-cut durian treated with 0 g (CK), 1.15 g (T1), 2.3 g (T2), and 3.45 g (T3) preservatives were stored at 10℃. Results showed that T1 group exhibited significantly ( P <0.05) higher firmness and VC content compared with CK at 12 d, indicating the best qualities. Key respiratory enzyme analyses verified that decreasing SDH, increasing G-6-PDH and 6-PGDH contributed mostly to the superior qualities of T1 group. This study could provide a prospective solution for packaged fresh-cut durian.
研究领域:
食品科学
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材料科学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2023
·
IF 5.3
Zhenyu Li,Enhui Du,Panpan Hao,Liyuan Huai,Yang Zhong,Soliman I. El-Hout,Chunlin Chen,Jian Zhang
The oxidation of biomass-derived 5-hydroxymethyl furfural (HMF) into 2,5-Furandicarboxylic acid (FDCA) is a favorable reaction since FDCA is an ideal alternative to petroleum-based monomer terephthalic acid in bio-based polyester industry. However, producing FDCA with high yield under mild conditions is still challenging, especially at energy-saving near-ambient temperatures. Here, we present a Pd nanoparticles catalyst supported on Vulcan XC-72 carbon (Pd/VC) that can completely convert HMF and achieve an encouraging FDCA yield (92.4%) at 30 ℃. The most important observations include yield declines at pure oxygen bubbling, and the transformation of intermediates becomes stagnant; instead, switching to the diluted oxygen is effectively driving the tandem oxidation as the over-oxidation, and thus, rapid deactivation of the Pd surface could be alleviated. The negative effect of high oxygen concentration also occurs in the dehydrogenation and oxygenation of an extended substrate. Since the decisive influence of oxygen content has often been neglected in past investigations of oxidative transformation over Pd-based catalysts, the current study may offer a critical reminder for other liquid-phase oxidation reactions.
研究领域:
化学工程
·
催化
·
生化工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yaozong Yang,Zhao Yang,Yuesong Xu,Zhaolin Li,Nana Yao,Jie Wang,Zhenhe Feng,Ke Wang,Jingying Xie,Hailei Zhao
Recently, silicon suboxide (SiO) attracts much attention as a promising anode material for high energy density lithium-ion batteries due to its high specific capacity. However, the active particle pulverization together with repeated rupture/reconstruction of the solid electrolyte interphase (SEI) film upon lithiation/delithiation process has been a critical issue that deteriorates the electrode cycling stability and therefore impedes its deployment in commercial batteries. To address this challenge, herein, vinylene carbonate (VC) and lithium nitrate (LiNO 3 ) are employed as synergistic additives to improve the electrode-electrolyte interface property. To circumvent the low solubility in carbonate solvent, LiNO 3 is incorporated directly into the electrode while VC still into the electrolyte solution . The synergistic addition of LiNO 3 and VC enhances the electrode reaction kinetics and improves significantly the cycling stability of the SiO anode. The SiO electrode with simultaneous addition of LiNO 3 and VC delivers a high reversible capacity of 1062.3 mA h g −1 and an excellent cycling performance with 94.5% capacity retention and 99.80% Coulombic efficiency for 160 cycles, demonstrating the superior effectiveness of VC and LiNO 3 in modulating the interface chemistry and structure of SiO anode.
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）