ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Yang Zhou,Yong Yang,Ning Zhou,Ruijing Li,Yong Zhou,Wuwei Yan
The low ionic conductivity and poor interfacial contact are the main obstacles restricting the practical application of all-solid-state polymer electrolyte in lithium metal batteries . Herein, four-armed and imidazolium cation-tethered polymeric ionic liquid (IMFPIL) is prepared through atom transfer radical polymerization of hydroxyethyl acrylate and subsequent functionalization. The branching architecture of the organic scaffold endows IMFPIL with high thermal stability, low glass transition temperature and loosely packed polymer backbones. The derived more free paths and volumes for Li-ion migration confer much enhanced ion conductivity on the as-prepared all-solid-state polymer electrolyte (IMFSPE), which is 22 times that of the linear counterpart with the same composition . High-temperature thermal integration of IMFSPE into the lithium metal battery effectively eliminates the gaps between the electrolyte and the two electrodes, rendering excellent interfacial contact and stability. The volume variation of the electrodes during the charge-discharge can be effectively mediated. As a result, in sharp contrast to the battery failure of the linear counterpart, such an integrated LiFePO 4 /IMFSPE/Li all-solid-state battery presents a high discharge capacity of 153 mAh g −1 at 0.2 C with 99% of coulombic efficiency, and the capacity retention ratio reaches 73% after 150 cycles. Compared with IMLSPE, IMFSPE-2 efficiently weakens the formation of dendritic lithium. The branching design combining with the thermal integration strategy and superior electrochemical features of imidazole make IMFSPE behave as an all-solid-state polymer electrolyte, which paves a new way for developing PILs as ideal SPEs in energy storage device.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Huimin Zhao,Xiaoqiang Liu,Zhenzhen Chi,Shuyuan Chen,Shaoxiang Li,Ziyang Guo,Lei Wang
Lithium–Oxygen (Li–O 2 ) batteries have great potential for promising next generation battery, owing to their high theoretical energy density. However, this system still faces many problems such as poor cycling performance and low coulombic efficiency, which mainly stems from the parasitic side reactions on cathode, the decomposition of electrolyte and the corrosion of Li anode. Herein, a novel gel polymer electrolyte (GPE) containing the polymethyl methacrylate (PMMA) with high stability towards the superoxide molecules and ionic liquid (IL) with the non-volatility (PMMA/IL-GPE) is designed by ultra violet (UV) treatment. PMMA/IL-GPE not only possesses the excellent ion conductivity (0.92 mS cm −1 ), the wide voltage window (not be oxidized until > 4.7 V) and superior leakproof property, but also effectively protects Li anode from O 2 -attacking. Moreover, we have further applied electroplating strategy to synthesize the binder-free Ru-coating N, P co-doped cathode (Ru@NPC), which greatly reduce the side reaction of cathode and reduce the charging overpotential. Hence, the Ru@NPC based Li–O 2 batteries using PMMA/IL-GPE show effectively improved discharge capacity (32793.5 mAh g −1 ). When operated at the limited capacity, this battery can run for over 120 cycles with the low charge overpotential of < 2 V. Moreover, PMMA/IL-GPE-based flexible Li–O 2 batteries also exhibit good performances after different bending conditions.
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 85
·81877-81885
·
IF 3.289
Fujiang Chen,Zhiyu Song,Jing Nie,Guowei Yu,Zuguang Li,Mawrong Lee
Ionic liquid-based magnetic carbon nanotubes (IL-Fe3O4@MWCNTs) were synthesized as a novel adsorbent for magnetic solid-phase extraction (MSPE) for the determination of six triazole fungicides, i.e. penconazole (Pen), tebuconazole (TEB), epoxiconazole (Epo), bitertanol (Bit), fenbuconazole (Fen) and difenoconazole (Dif), from aqueous solution by gas chromatography coupled to mass spectrometry. Scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD) and Energy Dispersive X-ray (EDX) spectrometry were used to characterize the adsorbent. Some important factors governing the extraction efficiency such as adsorbent type, dilution conditions, adsorbent amount, extraction time, desorption time and ionic strength were investigated and optimized. Under the optimal conditions, the enrichment factors of the method for the analytes were in the range of 125 to 1242. A good linearity was observed in the range of 0.5–50 ng mL−1 for Epo, Bit, Fen, and Dif, 1–50 ng mL−1 for Teb and 2–50 ng mL−1 for Pen, respectively, with the correlation coefficients ranging from 0.9968 to 0.9999. The limits of detection (LODs) and the limits of quantification (LOQs) of the method were within the range 0.05–0.22 ng mL−1 and 0.23–0.75 ng mL−1, respectively. The southern end of the Beijing-Hangzhou Grand Canal water (Hangzhou, China) was used to verify the applicability of the developed method for the determination of the targets.
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2016
·
IF 4.712
Huimin Duan,Xiaojiao Wang,Yanhui Wang,Yuanling Sun,Jianbo Li,Chuannan Luo
In this work, ionic liquid modified Fe 3 O 4 @dopamine/graphene oxide/ β -cyclodextrin (ILs-Fe 3 O 4 @DA/GO/ β -CD) was used as supporting material to synthesize surface molecularly imprinted polymer (SMIP) which then was introduced into chemiluminescence (CL) to achieve an ultrasensitive and selective biosensor for determination of lysozyme (Lys). ILs and β -CD was applied to provide multiple binding sites to prepare Lys SMIP and Fe 3 O 4 @DA was designed to make the product separate easily and prevent the aggregation of GO which could improve absorption capacity for its large specific surface area . The ILs-Fe 3 O 4 @DA/GO/ β -CD-SMIP showed high adsorption capacity ( Q = 101 mg/g) to Lys in the adsorption isotherm assays. The adsorption equilibrium was reached within 10 min for all the concentrations, attributing to the binding sites situated exclusively at the surface, and the adsorption model followed Langmuir isotherm. Under the suitable CL conditions, the proposed biosensor could response Lys linearly in the range of 1.0 × 10 −9 –8.0 × 10 −8 mg/mL with a detection limit of 3.0 × 10 −10 mg/mL. When used in practical samples in determination of Lys, the efficient biosensor exhibited excellent result with the recoveries ranging from 94% to 112%.
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Mengyuan Li,Chunliu Yang,Hongyuan Yan,Yehong Han,Dandan Han
A rapid and economic integrated solid-phase extraction (ISPE) method with ionic liquid-thiol-graphene oxide composite (IL-TGO) as a new adsorbent was established for the extraction of fipronil in chicken eggs. In this study, ISPE, a new form of solid-phase extraction, which combined the advantages of pipette-tip solid phase extraction (PT-SPE) and dispersive solid-phase extraction (DSPE), achieving rapid extraction of analyte with only a small amount of adsorbent. The three-dimensional porous IL-TGO was a new ideal adsorbent for fipronil due to the multiple adsorption interactions (π-π interaction, hydrophobic interaction and hydrogen bond), large adsorption capacity and fast adsorption rate. For this ISPE procedure, the analyte was adsorbed by IL-TGO through the pipette tip mode and then eluted through dispersive mode. Under the optimized condition, the proposed method performed following merits: good linearity (r = 0.9999), precision (RSD ≤ 6.3%), high recoveries (83.7% to 97.7%), rapid extraction (16 min), low consumption of adsorbent (3.00 mg of IL-TGO). The excellent recyclability of the ISPE device and the reusability of IL-TGO were observed and high recovery of fipronil (> 90%) was obtained after fifteen cycles. This work might provide promising strategy for the sensitive extraction and analysis of trace levels of fipronil from egg products.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Guanghai Chen,Ying Bai,Yongsheng Gao,Zhaohua Wang,Kun Zhang,Qiao Ni,Feng Wu,Huajie Xu,Chuan Wu
All-solid-state sodium ion batteries (ASIBs) possess enhanced safety and desired cycling life compared with conventional liquid sodium batteries, showing great potential in large-scale energy storage systems. Polymer electrolytes based on poly(ethylene oxide) (PEO) have been extensively studied for ASIBs due to superior flexibility and processability. However, PEO–based electrolyte without any modification can hardly meet the requirements of ASIBs at room temperature. In the past decade, unremitting efforts have been attached to inhibiting crystallization of PEO, especially via ionic liquid plasticizing. However, the plasticizing mechanism is not clear. Here we incorporated Pyr13FSI into PEO–NaClO4 electrolyte to investigate the plasticizing effect by infrared spectrum characterizations and DFT calculations. The results indicate that FSI– anions tend to adhere to the PEO backbone, generating enhanced coordination ability and more coordination sites. Solid-state sodium ion batteries using PEO–NaClO4–40 wt % Pyr13FSI as polymer electrolyte exhibit good cycling and rate performance. Insights into the plasticizing mechanism contribute to fabricating polymer electrolyte with high performance for ASIBs.
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高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Hui Wu,Liang Shi,Jiaheng Lei,Dan Liu,Deyu Qu,Zhizhong Xie,Xiaodi Du,Peng Yang,Xiaosong Hu,Junsheng Li,Haolin Tang
The development of efficient and durable catalyst for oxygen reduction reaction (ORR) is critical for the practical application of proton exchange membrane fuel cell (PEMFC). A novel imidazole based ionic liquid is synthesized in this study and used subsequently for the preparation of a N and S co-doped metal-free catalyst with three dimensional ordered microstructure. The catalyst prepared at 1100 °C showed improved ORR catalytic performance and stability compared to commercial Pt/C catalyst. We demonstrate that the high graphitic N content and high degree of graphitization of the synthesized catalyst is responsible for its superb ORR activity. Our results suggest that the N and S co-doped metal-free catalyst reported here is a promising alternative to traditional ORR catalyst based on noble metal. Furthermore, the current study also demonstrate that importance of morphology engineering in the development of high performance ORR catalyst.
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DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2015
·Vol. 38
·期 12
·2101-2108
·
IF 2.737
Jiafei Wang,Ligai Bai,Zhen Wei,Junxiao Qin,Yamin Ma,Haiyan Liu
An ionic liquid was incorporated into the porous polymer monoliths to afford stationary phases with enhanced chromatographic performance for small molecules in reversed-phase high-performance liquid chromatography. The effect of the ionic liquid in the polymerization mixture on the performance of the monoliths was studied in detail. While monoliths without ionic liquid exhibited poor resolution and low efficiency, the addition of ionic liquid to the polymerization mixture provides highly increased resolution and high efficiency. The chromatographic performances of the monoliths were demonstrated by the separations of various small molecules including aromatic hydrocarbons, isomers, and homologues using a binary polar mobile phase. The present column efficiency reached 27 000 plates/m, which showed that the ionic liquid monoliths are alternative stationary phases in the separation of small molecules by high-performance liquid chromatography
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高影响因子
TALANTA
·
2018
·
IF 4.244
Yuehua Chen,Huiyong Wang,Yuanchao Pei,Jianji Wang
It is significant to develop sustainable strategies for the selective separation of rare earth from transition metals from fundamental and practical viewpoint. In this work, an environmentally friendly solvent extraction approach has been developed to selectively separate neodymium (III) from cobalt (II) and nickel (II) by using an ionic liquid-based aqueous two phase system (IL-ATPS). For this purpose, a hydrophilic ionic liquid (IL) tetrabutylphosphonate nitrate ([P 4444 ][NO 3 ]) was prepared and used for the formation of an ATPS with NaNO 3 . Binodal curves of the ATPSs have been determined for the design of extraction process. The extraction parameters such as contact time, aqueous phase pH, content of phase-formation components of NaNO 3 and the ionic liquid have been investigated systematically. It is shown that under optimal conditions, the extraction efficiency of neodymium (III) is as high as 99.7%, and neodymium (III) can be selectively separated from cobalt (II) and nickel (II) with a separation factor of 10 3 . After extraction, neodymium (III) can be stripped from the IL-rich phase by using dilute aqueous sodium oxalate, and the ILs can be quantitatively recovered and reused in the next extraction process. Since [P 4444 ][NO 3 ] works as one of the components of the ATPS and the extractant for the neodymium, no organic diluent, extra etractant and fluorinated ILs are used in the separation process. Thus, the strategy described here shows potential in green separation of neodymium from cobalt and nickel by using simple IL-based aqueous two-phase system.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yangeng Peng,Xianzhao Zhang,Fengmao Liu,Dawei Zhen,Yanyan Jiao,Qingrong Peng
This work developed a novel Mn/N co-doped biochar (Mn/N-BC) using 1-methyl-3-methylimidazolium tetrachloromanganate ([Emim] 2 [MnCl 4 ]) as a modifier. The modification process increased the specific surface area (SSA) by 2.4 times and pore volume by 1.8 times, while simultaneously doping the biochar matrix with Mn and N, which provided additional adsorption sites and enhanced chemical reactivity. Adsorption experiments were conducted following pseudo-second-order kinetics and Langmuir isotherms, revealing a monolayer adsorption behavior. The maximum adsorption capacity of Mn/N-BC-3 for tetracycline (TC) was 2.8 times higher than that of unmodified biochar. Thermodynamic analysis indicated that the adsorption process was both spontaneous and endothermic. The adsorption mechanism involved multiple interactions, including pore-filling, hydrogen bonding, and π-π interactions. Density functional theory (DFT) calculations revealed that Mn and N doping significantly reduced the energy gap and increased adsorption energy, enabling stronger electronic interactions and enhancing the material’s affinity for TC. Regeneration experiments demonstrated that Mn/N-BC-3 retained 86 % of its initial TC adsorption capacity after five cycles, and leaching tests showed minimal Mn leaching. The material also exhibited excellent performance in real water, with a minimal reduction in TC adsorption in tap and river water. Furthermore, Mn/N-BC-3 showed effective adsorption of five different antibiotics. This study demonstrates that Mn/N-BC holds significant potential as an effective adsorbent for TC removal and demonstrates the versatility of metal ionic liquids in biochar modification. The findings provide valuable insights into developing advanced adsorbents for environmental remediation.
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yao-Yao Wang,Yu-Qing Wang,Chunfeng Wang,Yuqiao Chai,Xiaoxue Liu,Zhaoyang Wang,Hongjie Zhu,Hui-Juan Wang,Dong Wang
Bismuth-based halide perovskites are semiconductors that respond well to light and can be used in reactions triggered by visible light. However, their structure makes them unstable in wet or aqueous conditions, limiting their use in water-based reactions. This paper presents a new method to create two moisture-resistant bismuth-based perovskites, (1,3-diethylbenzimidazole) 3 Bi 2 I 9 and (1-Methyl-3-ethyl-benzimidazole) 2 (1,3-diethylbenzimidazole)Bi 2 I 9 , by using N-methylbenzimidazole and N-ethylbenzimidazole with bismuth iodide. During this process, ethanol molecules in the solvent modify the N atoms at the 3-position of the benzimidazole molecules, with the help of hydroiodic acid, to form ionic liquids. The new perovskite materials do not contain alkali metal ions or organic ammonium ions, but rather ionic liquid cations (1,3-diethylbenzolamazole) + and (1-methyl-3-ethylbenzimidazole) + , thus giving them excellent moisturizing properties. The study also improves the photocatalytic performance of these materials by making them into micron-sized sheets using the anti-solvent method. Under visible light, the materials show high efficiency in reducing Cr(VI) (95.3 % and 92.3 % for the two materials) and producing hydrogen from HI splitting (2053.59 and 1957.76 μmol g −1 h −1 ). This research not only develops a method for creating moisture-resistant perovskites with ionic liquids but also shows potential for using these materials in photocatalytic reactions in water.
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Qian Yuan,Meiling Qi
This work presents a new triptycene-based dicationic guanidinium ionic liquid (TPG) as the stationary phase for gas chromatography (GC). To our knowledge, this is the first example of employing a dicationic guanidinium ionic liquid (GIL) for chromatographic analyses. As a result, the TPG column exhibited moderate polarity and column efficiency of 3840 plates/m and 3120 plates/m measured by naphthalene and 1-octanol at 120 °C, respectively. Particularly, the TPG column exhibited distinctly advantageous performance for the challenging Grob test mixture and the isomer mixture of phenols and anilines over the monocationic GIL and its counterpart with dicationic immidazolium units (TP-2IL). Also, it showed higher selectivity towards the isomers of alkanes, alcohols, diethylbenzenes, bromotoluenes, bromonitrobenzenes than the commercial DB-35MS column. Moreover, the TPG column achieved improved thermal stability over the GIL column and excellent repeatability with the RSD values of 0.01–0.05% for run-to-run, 0.11–0.24% for day-to-day and 2.4–4.1% for column-to-column. Its application to GC–MS analysis of the essential oil of Mentha haplocalyx proved its good potential for analysis of complex samples.
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）