CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 34
·e202200543
·
IF 5.02
Zhuoran Ao,Youlan Zou,Haiyan Zou,Yuxing Huang,Nantao Chen
Graphical PEO-based Double-layer solid electrolyte was fabricated through casting method. PVP distributed into PEO layer contacting with cathode promotes the dissolution of lithium salts and forms lithium bonds with (LiPSs). The double-layer solid electrolytes can ameliorate the shuttle effect of LiPSs better than pure PEO electrolytes. Despite the high specific capacity of Li−S battery, shuttle effect of lithium polysulfides (LiPSs) and safety issue pose a great challenge to realize its commercial application. Replacing liquid electrolyte with poly (ethylene oxide) (PEO) -based solid-state electrolyte is considered as a promising method to boost the safety, but the shuttle effect of LiPSs cannot be completely eliminated. In this work, a new kind of double-layer PEO-based polymer electrolyte is designed to restrict the LiPSs. The layer next to cathode consists of PEO and poly(vinylpyrrolidone) (PVP). The other layer consists of PEO. PVP with abundant of amide groups has been proved to have strong affinity to LiPSs. The strong interaction between LiPSs and carbonyl groups in amide is verified by Attenuated Total Reflection-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy tests. As a result, the assembled Li−S battery exhibits a specific capacity of 1100 mAh g −1 and capacity retention of 347 mAh g −1 after 200 cycles at 60 °C and 0.05 C, while the capacity retention of the battery without PVP-blended PEO electrolyte remains only 27 % at the same conditions.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 6
·060510
·
IF 3.1
Shuang Chen,Yu-Hang Zhang,Xue-Tong Hu,Guan-Hua Wang,Kun-Rong Lu,Xin Jiang,Yi-Wei Fan,Ting-Ting Chen,Peng-Fei Wang,Yuhan Wu,Fa-Nian Shi
The development and application of polyethylene oxide (PEO) based solid polymer electrolyte (SPE) is severely constrained by its low ionic conductivity and poor tensile resistance. To improve the electrochemical performance of SPE without losing its mechanical properties, a benzene sulfonate-based additive is adopted into crosslinking system composed of -CH2-CH2-O- segments to obtain a membrane with a high ionic conductivity of 1.47 × 10−4 S cm−1 and an ionic transference number of 0.70 at room temperature. The activation energy value of 0.128 eV gives evidence for a favorable migration mechanism of PTH-SPE. Anti-dendrite growth and contact optimization can be realized by molecular structure design with a tensile elongation of 490%. The reversible overpotential of Li||Li symmetric cell within 1000 h demonstrates that the compact PTH-SPE can inhibit the growth of lithium dendrite. This work provides a new strategy for designing high-performance solid electrolytes for room temperature via a green solvent-free method.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Huiping Huang,Dan Zhao,Yuanfa Liu,Shuhui Chen,Lele Wang,Jizhong Ren
With the escalating environmental challenges posed by CO 2 emissions, particularly the greenhouse effect, the development of efficient CO 2 utilization and storage technologies have become critically important. The mixed matrix membranes (MMMs) have emerged as promising candidates for gas separation due to their superior permeability and selectivity. However, practical applications are often hindered by issues such as nanoparticle agglomeration and poor compatibility between fillers and polymer matrices. In this study, a pre-assembly strategy was proposed. Through 2-methylimidazole (Hmim) served as a molecular bridge connecting the ZIF-67 with the polydimethylsiloxane-poly(ethylene oxide) (PDMS-PEO) block copolymer, the ternary ZIF-67-Hmim-PDMS-PEO nanofluid was constructed, which was subsequently blended with Pebax1657 to fabricate high-performance MMMs for CO 2 separation. Comprehensive characterization of the ZIF-67-Hmim-PDMS-PEO/Pebax1657 MMMs was conducted using SEM, XRD, FTIR, TGA, and DSC techniques. The results demonstrated that the ternary blending strategy involving ZIF-67, Hmim, and PDMS-PEO not only significantly enhanced the dispersion stability of ZIF-67 nanoparticles but also improved their compatibility with the polymer matrix. Remarkably, the incorporation of ZIF-67-Hmim-PDMS-PEO nanofluid led to substantial improvements in CO 2 permeability while maintaining selectivity. The membrane with 20 wt% ZIF-67-Hmim-PDMS-PEO demonstrated CO 2 /N 2 selectivity significantly surpassed that of the membrane prepared without pre-assembly. The membrane containing 30 wt% nanofluid exhibited a 235% enhancement (343.0 Barrer) in CO 2 permeability compared to pristine Pebax1657 membranes, with the selectivity of 51.2, reaching the 2008 upper bound for CO 2 /N 2 separation. These findings highlight the effectiveness of our approach in addressing key challenges in MMMs development for advanced gas separation applications.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Qiujun Wang,Wei Zhang,Ximing Liu,Huilan Sun,Di Zhang,Ranran Li,Fei Yuan,Qujiang Sun,Bo Wang
Poly(ethylene oxide) (PEO)-based solid electrolytes are considered one of the most promising solid electrolyte systems due to their favorable flexibility and lithium-salt dissolving capability. However, sluggish Li + transport kinetics caused by high crystallinity at room temperature and poor interfacial stability against high-voltage cathodes severely hinder their practical applications in high-energy-density solid-state lithium batteries. To address these challenges, a synergistic Li 3 OCl/LiDFP regulation strategy is proposed by incorporating lithium-rich antiperovskite Li 3 OCl and LiPO 2 F 2 (LiDFP) into a PEO-based composite electrolyte, enabling simultaneous enhancement of ionic conductivity and interfacial stability. The synergistic effect of Li 3 OCl and LiDFP effectively suppresses PEO crystallization, reducing the crystallinity from 31.13% to 7.79%, while facilitating Li + transport through reconstruction of the local solvation environment. The optimized PLLOC-6%LiDFP electrolyte delivers an ionic conductivity of 1.80 × 10 –5 S cm –1 . The corresponding Li∥Li symmetric cell exhibits stable cycling for over 850 h at 0.2 mA cm –2 and achieves a critical current density of 0.45 mA cm –2 . Furthermore, the Li∥NCM811 cell maintains a capacity retention of 78.68% after 200 cycles at 1 C and 25 °C. Interfacial characterization reveals the in situ formation of robust interphases enriched with LiF, Li 3 N, Li 3 PO 4 , and Li x POF y species during cycling, which effectively suppress parasitic interfacial reactions and promote Li + transport. This work provides an effective strategy for simultaneously improving ionic transport and high-voltage interfacial stability in PEO-based composite solid electrolytes. Download: Download high-res image (284KB) Download: Download full-size image
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DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Lu Kun-Rong,Li Dong-Yang,Wang Hong-Yu,Han Yue-Xi,Shi Fa-Nian,Wang Peng-Fei,Zhang Yu-Hang
Polyethylene oxide (PEO)-based polymer electrolytes hold promise for application in solid-state lithium metal batteries. However, the high crystallinity of PEO poses a significant challenge to ion transport, particularly limiting its room-temperature performance. Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), a semi-crystalline polymer with rigid fluorocarbon chains, can provide robust mechanical support to the electrolyte system. Herein, a quasi-solid electrolyte (QSE) was fabricated by using PEO and PVDF-HFP, in which succinonitrile (SN) was introduced as a plasticizer to enhance the electrochemical properties at room temperature. Innovatively, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE) was employed as a shield layer to prevent direct contact between the Li anode and the prepared SN-modified PEO/PVDF-HFP-QSE, thus forming a stable anode/electrolyte interface. The obtained TTE-P 8 P 2 S(12%)-QSE exhibits high room-temperature electrochemical properties, with an ionic conductivity of 4.02 × 10 –4 S cm –1 , a lithium-ion transport number of 0.47, and a wide electrochemical window of 5.4 V vs. Li + /Li. By interfacial modification, TTE-P 8 P 2 S(12%)-QSE can enable long-term cycling of LiCoO 2 cathodes and Li anodes, with an initial discharge capacity of 126.9 mAh g –1 , and achieve an average capacity of 142.8 mAh g –1 within 100 cycles at room temperature. Characterizations reveal that the incorporation of TTE preserves the structural integrity of the lithium electrodes, promotes efficient utilization of active lithium ions, and tailors the composition and structure of the solid-electrolyte interphase (SEI) on the lithium metal anode, thereby substantially enhancing interfacial stability. This work provides a feasible strategy for building high-energy-density lithium metal batteries for room-temperature applications.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 23
·2113068
·
IF 19.924
Xufeng Wang,Yajie Song,Xin Jiang,Qingsong Liu,Jidong Dong,Jian Wang,Xin Zhou,Bing Li,Geping Yin,Zaixing Jiang,Jiajun Wang
The complicated interfacial problems of poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) at high voltages severely hinder its practical applications for high-energy-density all-solid-state lithium batteries (ASSLBs). Herein, the failure mechanisms of ASSLBs with LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM)-PEO are studied. It is found that the ASSLBs after charge generates a sharp drop of 0.62 V at the cut-off voltage of 4.30 V, and induce a high interfacial resistance due to forming an uneven thick cathode electrolyte interface on the NCM surface, as well as cause the destruction of NCM surface structure during storage, leading to serious performance degradation. Constructing the interfacial nanolayer with aromatic polyamide (APA) on the surface of NCM active particles (NCM@APA) can mitigate interfacial side reactions between NCM and SPE. Robust interfacial nanolayers not only effectively protect the crystal structure of NCM but also provide a steady interfacial environment for Li + diffusion kinetics. Accordingly, NCM@APA||SPE||Li ASSLBs exhibit an acceptable voltage drop of 0.27 V after 10 days storage and a substantially improved electrochemical performance with an average coulombic efficiency of 99.1% and capacity retention of 76.7% at 30 mA g −1 after 80 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Kui Wang,Yeqi Fu,Yanbi Li,Chunyun Tu,Weijiang Huang,Qin Tian,Wei Yan
Reusing phosphogypsum (PG) is of great significance as the negative effect of increasing PG pollution on the environment is now incontrovertible. Herein, nano-CaSO 4 particles were fabricated using PG through a facile yet effective solvent-thermal method, and their influence on the thermomechanical properties and electrochemical properties of polymeric solid electrolytes was further investigated. Results indicated that cubic nano-CaSO 4 particles could be obtained by regulating the concentrations and types of surfactants and concentrations of H 2 SO 4 and HNO 3 . Furthermore, nano-CaSO 4 fillers at a content of 10 wt.% could simultaneously improve the mechanical properties, flame retardancy, and ionic conductivity of polyvinyl oxide-based solid electrolytes. Nano-CaSO 4 (10 wt.%) could enhance the strength by two times and modulus by more than four times, improve the limiting oxygen index from 19.5% to 23.1%, reduce the total heat release rate from 17.9 to 16.2 kJ/g, and increase ionic conductivity by more than two times at 60°C. This study provides a facile yet economic strategy for fabricating cubic nano-CaSO 4 using PG and exhibits an excellent utilization prospect for high-safety all-solid-state batteries.
研究领域:
材料科学
·
化学工程
·
电化学
·
纳米技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
An Hanwen,Li Menglu,Liu Qingsong,Song Yajie,Liu Jiaxuan,Yu Zhihang,Liu Xingjiang,Deng Biao,Wang Jiajun
Polyethylene oxide (PEO) based electrolytes critically govern the security and energy density of solid-state batteries, but typically suffer from poor oxidation resistance at high voltages, which limits the energy density of batteries. Here, we report a Lewis-acid coordinated strategy to significantly improve the cyclic stability of 4.8 V-class PEO-based battery. The introduced Mg 2+ and Al 3+ with strong electron-withdrawing capability weaken the electron density of ether oxygen (EO) chains via chelation in the coordination structure, resulting in a locally limited interaction between the EO chains and the surface of cathodes at high state of charge. The batteries using Lewis-acid coordinated electrolytes and Ni-rich cathodes achieve high voltage stability of 4.8 V over 300 cycles. Further, the realization of industrial-scale electrolyte membranes, and Ah-level pouch cells over 586 Wh kg ‒1 with good cyclic stability, suggests the potential of our strategy in practical applications of all-solid-state batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jiadong Deng,Feiran Ma,Xinglong Gao,Yanhua Zhang
The low Li + conductivity and high cost of polyethylene oxide (PEO)-based polymer electrolytes still restrict their application. Herein, a natural one-dimensional sepiolite (SEP) material is coated with Fe 3 O 4 (FSEP) to construct a FSEP-PEO composite polymer electrolyte (CPE) with a directional arrangement structure, which significantly improved the Li + conductivity. Results show that the Li + conductivity of CPE (9.1 ×10 −5 S cm −1 ) based on vertical arrangement FSEP is 43 times higher than that of PEO (2.1 ×10 −6 S cm −1 ), and 9.1 times and 3.1 times higher than that of parallel (1.0 ×10 −5 S cm −1 ) and disordered arrangement (2.9 ×10 −5 S cm −1 ), respectively. The arrangement direction of FSEP has no obvious effect on the crystallinity of PEO and the dissociation degree of LiTFSI, while it has a great influence on the Li + migration number (t Li+ ). The t Li+ of CPE with vertical arrangement (0.333) increased by 99.4% compared with that of the parallel arrangement (0.167), suggesting a short and fast migration path. Through multi-physical field simulation, the high current density in CPE is mainly distributed at the FSEP/PEO interface, indicating that the FSEP/PEO interface plays a dominant role in Li + conduction. In addition, lithium symmetric batteries and LiFePO 4 batteries based on vertically arranged CPE have excellent cycle and rate performance.
研究领域:
材料科学
·
储能技术
·
聚合物电解质
·
锂离子电池
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Jiahao Li,Yuhua Zhen,Gaohui Ren,Wenjie Yang,Yuanyue Qie,Xinyu Cai,Zheng Yan,Wei Xing,Hongxia Geng
Solid-state lithium metal batteries (SSLMBs) employing polymer electrolytes are considered highly promising for their superior safety and elevated energy density. However, their development is impeded by the inherently low ionic conductivity of polymer electrolytes and the poor interfacial stability at the lithium metal anode. To overcome these challenges, Li-doped three-dimensional ZnO (LZN) ceramic hollow tube networks were incorporated into a poly(ethylene oxide) (PEO)-based solid polymer electrolyte (SPE). The abundant oxygen vacancies and strong interactions with LiTFSI facilitate lithium salt dissociation, thereby generating a higher concentration of free Li⁺ ions and enhancing Li⁺ transport. Consequently, the optimized PL-20LZN composite polymer electrolyte membrane exhibits a high Li⁺ conductivity of 8.12 × 10 –4 S·cm -1 at 60 °C. The solid-state LiFePO 4 /Li cell maintains stable cycling performance over 400 cycles, with an average Coulombic efficiency of 99.8 %. Moreover, relative to the pure PEO electrolyte, the full cell employing a high-voltage LiNi 0.6 Co 0.6 Mn 0.6 O 2 (NCM622) cathode exhibits notably enhanced cycling stability, suggesting that LZN hollow nanotubes play a key role in enhancing both interfacial and high-voltage stability.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
全固态电池
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 12
·期 1
·256-266
·
IF 11.9
Shuohan Liu,Jieqing Shen,Zhikai Wang,Wensheng Tian,Xiujun Han,Zhixin Chen,Hui Pan,Lei Wang,Dongyu Bian,Cheng Yang,Shenmin Zhu
Instability caused by lithium dendrites and low oxidation potentials hinders the commercialization of poly(ethylene oxide) (PEO) based all-solid-state lithium metal batteries (ASSLBs). Herein, fluorinated carbon nitride (FCN) with a hierarchical porous structure was designed and fabricated to modify a PEO-based electrolyte. The resultant FCN effectively suppressed the lithium dendrite growth in ASSLBs and elevated the oxidation potential of the PEO-based electrolyte to as high as 5.2 V. The fluorine and nitrogen in the FCN resulted in the formation of a LiF- and Li3N-rich composite solid electrolyte interface (SEI) that prevented continuous side reactions between the Li metal anode and the electrolyte. The produced hierarchical structure has abundant mesopores, which provided fluent channels for Li ion diffusion without extra resistance and greatly promoted the cycling and rate performance of the batteries. By using this porous FCN modified electrolyte, Li–Li symmetrical cells exhibited an ultra-long lifespan of more than 2500 h at a current density of 0.1 mA cm−2. The ASSLBs combined with a high-voltage ternary cathode can work stably at high rates of 2C and 5C with capacity retentions of 87.8% after 150 cycles and 92.1% after 50 cycles, respectively. This work presents a facile and effective strategy for the design of polymer based electrolytes for high-voltage, high-rate ASSLBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
固体离子学
·
高分子化学
·
电池技术
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2018
·
IF 2.751
Juan Shi,Hougao Xiong,Yifu Yang,Huixia Shao
Developing solid electrolyte for alkali metal batteries is of important significance. A gel polymer electrolyte (GPE) based on the porous composite polymer membrane formed by blending of PEO , PMMA and P(VDF-HFP) is prepared, and the effects of the addition of nano-sized oxide fillers (Al 2 O 3 , TiO 2 , SiO 2 ) on the characteristics of the composite GPEs are investigated. The composite GPE with filling of SiO 2 has more amorphous region and porous structure which can hold more liquid electrolyte without leakage, so the composite GPE can provide high ionic conductivity at room temperature and large Li + or Na + transport number. Furthermore, the composite GPE possesses a large electrochemical window, superior thermal stability and excellent interfacial stability. The composite GPEs can be applied in a variety of lithium and sodium metal batteries and exhibit superior cycling stability and rate performance.
研究领域:
能源材料
·
电化学
·
高分子科学
·
电池技术
·
固态电解质
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）