JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Qingqing Zhou,Chuyang Li,Bin Wang,Wenwei Ding,Junjie Lu,Bifu Sheng,Wei Li,Wenjuan Zhu,Qian Ni,Xiang Han
Polyethylene oxide (PEO)-based solid-state batteries have attracted extensive attention due to their scalable processing, flexible and soft interface contact, and excellent compatibility with lithium metal. The low ionic conductivity at room temperature, caused by the strong interaction between PEO chains and lithium ions , however, limits its practical application. Herein, taking the PEO-PAN dual-matrix polymer electrolyte as an example, a weak coordinated solvation structure is enabled by fluoroethylene carbonate (FEC) as a co-solvent during electrolyte preparation. The tiny residual FEC is demonstrated to weaken the interaction between lithium ions and PEO chains while competitively dissociating lithium salts with the residual solvent and anions. In addition, the incorporation of FEC enhances the dispersion of LATP nanoparticle fillers, which reduces the crystallinity of PEO. Furthermore, the anion-derived LiF-rich solid-electrolyte interphase significantly suppresses the formation of lithium dendrites. Consequently, the prepared PEO-PAN-LATP-LiTFSI-5 % FEC (PPLLF) composite solid polymer exhibits an ambient ionic conductivity of ∼ 1 × 10 −4 S cm −1 and enables stable cycling for over 450 h in a Li||Li symmetrical battery at room temperature. The assembled Li|PPLLF|LFP full battery delivers a specific capacity of 137.6 mAh/g after 300 cycles at 0.2C, further demonstrating the effectiveness of the solvation manipulation strategy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2012
·Vol. 19
·期 11
·1-7
·
IF 1.733
Yu Wei-Na,Liu Shou-Xin,Wang Hong-Mei,Tian Rong
Temperature-responsive P(NIPAM- co -HMAM)- b -PEO- b -P(NIPAM- co -HMAM) triblock copolymers were synthesized by an atomic transfer radical polymerization (ATRP) method without freeze–pump–thaw cycles. The composition, structure, and molecular weight of the synthesized block copolymer were characterized by 1 H NMR and GPC. The phase transitions induced by temperature for different copolymers in dilute aqueous solutions have been studied using transmittance measurements, laser particle size measurements, viscosity analysis, and surface tension measurement, which showed that the HMAM content and the PEO (or PEG) chain length in the synthesized triblock copolymer affects the copolymer’s lower critical solution temperature (LCST). The micellization behavior of each temperature-responsive triblock copolymer was investigated by fluorescence probe measurements and transmission electron microscopy (TEM), which showed that the triblock copolymers form stable micelles above the LCST. The introduction of the HMAM component and the formation of micelles represent the first steps in the development of an injectable gel that forms in situ through chemical and physical crosslinking.
研究领域:
高分子化学
·
生物材料
·
药物递送系统
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 44
·e56156
·
IF 2.7
Hao Sun,Qinghua Yang,Detao Kong,Yanrui Li,Yaolong He,NengHui Zhang,Hongjiu Hu
Polyethylene oxide (PEO)-based solid polymer electrolytes are regarded as promising electrolyte materials because of their safety and flexibility. However, low ionic conductivity at ambient temperature and poor mechanical properties have been a hindrance to its development. In this work, we thermally compressed the PEO-based electrolytes and explored the ionic conductivity, mechanical performance, free volume, and thermal properties of the electrolyte under different thermal pre-compressing strains (TPC-strains). The results show that TPC-strain can significantly improve the ionic conductivity, in-plane strength, stiffness, and cell specific capacity as well as the mechanical integrity of solid polymer electrolytes within the battery environment. However, it also results in a reduction in the modulus and stiffness of the SPEs in the through-plane. In particular, applying a TPC-strain of 10%–20% to the SPEs by thermal compressing may be a suitable option, which can increase the ionic conductivity of the through-plane to a factor of 3.4 compared with the uncompressed electrolyte, and increase the in-plane strength by up to 141%, resulting in better mechanical integrity during charging/discharging processes. At the same time, the compression modulus can be maintained at 80% or higher.
研究领域:
材料科学
·
电化学
·
高分子物理
·
能源存储
·
固态离子学
✓ 已验证
DOI
高影响因子
Coatings
·
2018
·Vol. 8
·期 2
·68
·
IF 2.35
Jia Li,Boxiang Wang,Jie Lin,Dehong Cheng,Yanhua Lu
Multifunctional mulberry silk fabrics with excellent temperature- and pH-sensitivity, antibacterial properties and permeability are successfully prepared by surface modification with PNIPAAm/chitosan/poly(ethylene oxide) nanofibers. The nanofibers deposited on the surface of mulberry silk fabric are produced by the electrospinning technique. The surface properties of mulberry silk fabrics were changed by coating process and glutaraldehyde vapor cross-linking technology. The PNIPAAm/chitosan/PEO nanofibers have good apparent morphology and uniform fiber diameter. The contact angle of modified mulberry silk obviously increases with the increasing temperature. The bacterial reduction rates of modification of mulberry silk againstE. coliandS. aureusall reach above 80%. Permeability test results show that it can largely improve the poor permeability of coated fabric by intelligent nanofiber modification technology. The air permeability of temperature- and pH-sensitivity mulberry silk fabric modified with PNIPAAm/chitosan/PEO nanofibers, which has reached about 5.1 × 102L/m2/s, is higher than that of the silk fabric coated with PNIPAAm/chitosan/PEO solution that reached 1.5 × 102L/m2/s. The nanofibers coated with mulberry silk fabrics show outstanding temperature- and pH-sensitivity, antibacterial properties and permeability, and may be a potential application in medical care, intelligent materials and textiles.Keywords:chitosan;poly(N-isopropyl acrylamide);mulberry silk;electrospinning;antibacterial activity;thermosensitive behavior
研究领域:
材料科学
·
纺织工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
WEAR
·
2020
·
IF 4.108
Jingguo Fu,Meng Li,Gengshuo Liu,Shenglin Ma,Xinhe Zhu,Chunsheng Ma,Dong Cheng,Zhijun Yan
Ceramic based self-lubricating coating was successfully fabricated on Al-based plasma electrolytic oxidation (PEO) ceramic coating in this work. The coating was reinforced with thermosetting polyimide (PI) containing tungsten disulfide (WS 2 ) fillers. The morphology, chemical composition and phase structure of the PEO, PEO/PI and PEO/PI/WS 2 coatings were observed by SEM, EDS and XRD , respectively. Tribological properties of the coatings were comparatively investigated using a reciprocating pin-on-block tribotester under different conditions. Under dry sliding conditions, the friction coefficient of PEO/PI/WS 2 coating was about 0.4, which was 50% lower than that of PEO coating. Meanwhile, the wear rate of counter pin cooperated with PEO/PI/WS 2 coating was only 0.04 mg min −1 , which was 90.9% lower than that of PEO coating. Under step loading conditions, the load was ultimately increased to 70 N and the total duration time was about 35 min, while the corresponding values of PEO coating were 30 N and 13 min, respectively. These are owed to the hard ceramic coating and the soft self-lubricating coating, which can improve the load capacity and decrease the friction, of the ceramic based self-lubricating coating.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2021
·Vol. 28
·期 2
·1-10
·
IF 3.097
Liu Wei,Ji Xiangling
The spatial arrangement of functional inorganic nanoparticles within polymer micelles is essential to the nanocomposite performances. Polystyrene (PS) of different lengths (PS 24 , PS 91 and PS 163 ) are grafted onto the surface of fluorescent CdSe/CdS core/shell quantum dots (QDs) through ligand exchange procedure, and their grafting density decreases from 2.80 to 0.54, 0.18 chains/nm 2 with increase of PS ligand length. Under two competing effects, i.e. wettability between QDs and block copolymer PS 120 - b -PEO 318 and the attraction between QDs, the precise location of PS-capped QDs inside the co-assemblies can be regulated by the length of PS ligands. The low grafting density of PS 163 on the QD surface cannot overcome the van der Waals and hydrophobic attraction between QDs and cause the local aggregation of QDs within the co-assemblies. On the contrary, short PS 24 ligands with high grafting density can avoid QD aggregation, but exhibit poor wettability with copolymer, which confines the QDs in the central portion of the core of co-assemblies. PS 91 ligands with medium grafting density have good wettability with block copolymer and facilitate the homogeneous distribution of QDs inside the cores of co-assemblies. Furthermore, the influence of stirring time and water addition rate on the structure of co-assemblies is also investigated.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 5
·2037-2043
·
IF 2.817
Kang Shusen,Yang Zelin,Yang Chengxiang,Zhao Shan,Wu Ningning,Liu Fuliang,Chen Xiaotao,Shi Bin
A novel polymer film is developed by trapping tribasic gel polymer electrolyte (GPE), which blended the polyethylene glycol (PEO), polystyrene (PS), and poly(methyl methacrylate) (PMMA). The properties of the PEO-PS-PMMA polymer film and PEO-PS-PMMA GPE were investigated. The ionic conductivity of the PEO-PS-PMMA GPE is 0.12 mS/cm at 25 °C. Li + transference number of PEO-PS-PMMA GPE is 0.2. Besides, PEO-PS-PMMA GPE shows high electrochemical stability and excellent interface stability to Li metal electrode. Li/PEO-PS-PMMA/LiFePO 4 cell achieved an initial specific discharge capacity of 97 mAh/g and good cycle performance at the current density of 0.1 C. This GPE is promising to be applied to rechargeable Li batteries with high safety and long cycle life.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2021
·Vol. 28
·期 1
·85-97
·
IF 2.817
Wang Xin,Hua Haiming,Li Jiyang,Shen Xiu,Xie Xiaohua,Zhang Peng,Zhao Jinbao
Polyethylene oxide (PEO) was one of the most classic and widely used solid polymer electrolyte matrixes. In this work, we added the previously synthesized titanium dioxide (B-P25) fillers with oxygen vacancies to the PEO-LiClO 4 solid electrolyte system. It is found that compared with the pristine P25 fillers, the oxygen vacancies lead to the decrease of ionic conductivity and the Li + transference number. Infrared and Raman spectroscopy shows that the introduction of oxygen vacancies lead to the formation of Li + -ClO 4 − ion pairs and the decrease of carrier concentration resulted in the decrease of Li + conductivity. Further theoretical calculations verified that this is due to the preferential combination of oxygen vacancies and ether oxygen atoms of PEO. This finding effectively supplements the effect of oxide oxygen vacancies on the conduction of Li + in the PEO matrix, and not all oxygen vacancies are beneficial to the conduction of Li + ions in the PEO matrix.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2021
·
IF 3.785
Zhiqiang Fang,Ming Zhao,Yan Peng,Shiyou Guan
Polyethylene oxide (PEO)-based solid polymer electrolytes (SPEs) are appealing solid electrolytes for lithium-metal batteries (LMBs) due to their high safety, low cost and flexibility. However, PEO'snarrow electro-chemical potential window and poor interfacial compatibility with the electrode restrict PEO-based SPE development. Herein, we used a solution-casting method to prepare PEO-based SPE membranes reinforced with an organic ionic plastic crystal—N,N-diethylpyrrolidinium bis(fluorosulfonyl)amide (C 2 epyrFSI). The as-prepared SPE exhibits high ionic conductivity of 3.02 × 10 −4 S cm −1 at 50 °C, an extremely wide electro-chemical window (5.1 V) and flexible mechanical properties . Using SPE, the Li symmetric cells can cycle for 2000 h at a current density of 0.1 mA cm −2 without short circuiting at 50 °C. Furthermore, the Li|SPE|LiFePO 4 all-solid-state LMBs have a high initial discharge specific capacity of 157.3 mAh g −1 at 0.2C and a capacity retention rate of 96% after 120 cycles. This study shows that the PEO-C 2 epyrFSI SPE is a promising electrolyte for all-solid-state LMBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Huanhuan Duan,Liansheng Li,Kaixiang Zou,Yuanfu Deng,Guohua Chen
Poly(ethylene oxide) (PEO)-based composite solid electrolytes (CSEs) are considered as one of the most promising candidates for all-solid-state lithium batteries (ASSLBs). However, a key challenge for their further development is to solve the main issues of low ionic conductivity and poor mechanical strength, which can lead to insufficient capacity and stability. Herein, β-cyclodextrin (β-CD) is first demonstrated as a multifunctional filler that can form a continuous hydrogen bond network with the ether oxygen unit from the PEO matrix, thus improving the comprehensive performances of the PEO-based CSE. By relevant characterizations, it is demonstrated that β-CD is uniformly dispersed into the PEO substrate, inducing adequate dissociation of lithium salt and enhancing mechanical strength through hydrogen bond interactions. In a Li/Li symmetric battery, the β-CD-integrated PEO-based (PEO-LiTFSI-15% β-CD) CSE works well at a critical current density up to 1.0 mA cm–2 and retains stable lithium plating/stripping for more than 1000 h. Such reliable properties also enable its superior performance in LiFePO4-based ASSLBs, with specific capacities of 123.6 and 114.0 mA h g–1 as well as about 100 and 81.8% capacity retention over 300 and 700 cycles at 1 and 2 C (1 C = 170 mA g–1), respectively.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Green Energy & Environment
·
2022
·
IF 12.781
Wei-Shi Sun,Ming-Jie Yin,Wen-Hai Zhang,Shuo Li,Naixin Wang,Quan-Fu An
Emerging excessive greenhouse gas emissions pose great threats to the ecosystem, which thus requires efficient CO 2 capture to mitigate the disastrous issue. In this report, large molecular size bisphenol A ethoxylate diacrylate (BPA) was employed to crosslink poly (ethylene glycol) methyl ether acrylate (PEGMEA) via the green and rapid UV polymerization strategy. The microstructure of such-prepared membrane could be conveniently tailored by tuning the ratio of the two prepolymers, aiming at obtaining the optimized microstructures with suitable mesh size and PEO sol content, which was approved by a novel low-field nuclear magnetic resonance technique. The optimum membrane overcomes the trade-off challenge: dense microstructures lower the gas permeability while loose microstructures lower high-pressure-resistance capacity, realizing a high CO 2 permeability of 1711 Barrer and 100-h long-term running stability under 15 atm. The proposed membrane fabrication approach, hence, opens a novel gate for developing high-performance robust membranes for CO 2 capture.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jinlai Shen,Zhiwen Lei,Chaoyang Wang
Solid polymer electrolyte with broad electrochemical stability window is regarded as the most promising candidate for high-voltage lithium metal batteries enabling high specific energy density. However, solid polymer electrolyte without particular protection is not facile to realize stable cycle of LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathode at high voltage because of the strong oxidizing property from the direct contact between cathode and electrolyte. Herein, an ion conducting asymmetric poly(ethylene oxide) (PEO) based electrolyte composed of zeolitic imidazolate framework (ZIF-8)@ionic liquid protective coating on NCM811 cathode surface and PEO-based electrolyte with ZIF-8 nanofillers on lithium metal anode is prepared in order to construct high-performance solid-state lithium metal batteries. The as-prepared asymmetric composite electrolyte exhibits a high ionic conductivity of 9.02 × 10 -4 S/cm at 60 °C and broad electrochemical stability window of above 4.9 V. Notably, the as-prepared cells exhibit the highest discharge capacity of 150 mAh/g at 0.2C under 60 °C. It is found that the ZIF-8@ionic liquid protective coating effectively prevents the oxidative decomposition of PEO based electrolyte at high voltage and the transition metal dissolution from the cathode. Meanwhile, the growth and penetration of lithium dendrites are also restrained, which shows significant potential for boosting the commercialization of high-voltage lithium metal 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
危险品化学品经营许可证（带存储）