CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Xue Ye,Jianneng Liang,Jiangtao Hu,Dazhuan Wu,Yongliang Li,Xiaoping Ouyang,Qianling Zhang,Xiangzhong Ren,Jianhong Liu
To achieve safe and high energy density solid-state batteries (SSBs), the weight of solid-state electrolyte (SSE) should be minimized and a high voltage and high specific capacity cathode should be used. Polyethylene oxide (PEO)-based polymer electrolytes (PEs) has been identified as the optimal SSE for SSBs owing to their versatile advantages. However, fabricating ultra-thin and high voltage stable PEO-based PEs is still challenging. Herein, an ultra-thin (8.1 µm) blending polymer electrolyte (BPE) is designed through blending PEO, Polymethyl methacrylate (PMMA) and Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP), and complexing with Succinonitrile (SN), Fluoroethylene carbonate (FEC) and LiTFSI plasticizers. Based on this design, Li|BPE|LiFePO 4 quasi-solid-state battery (QSSB) can operate for 250 cycles with a capacity retention of 92.8%, 4.5 V high voltage Li|BPE|LiCoO 2 QSSB exhibits 87% capacity retention after 80 cycles, with an average Coulombic efficiency ≥99.8%, which is much superior than 4.5 V Li|PEO|LiCoO 2 SSB, whose capacity rapidly decays to 0 mAh/g after a dezen of cycles. DFT calculation suggests that blending PEO, PMMA and PVDF-HFP increase the electrochemical oxidation tolerance. Interface study by TEM and XPS discloses PEO-LiTFSI/LiCoO 2 interface is unstable with a big amount of decomposed products from PEO-LiTFSI and from LiCoO 2 , while BPE/LiCoO 2 interface is more stable without obvious decomposition, indicating the promising application of BPE for high energy density QSSBs.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·Vol. 141
·期 37
·e55941
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IF 2.7
Zhitao Yang,Zhen Zhang,Cheng Li,Yiping Fang,Yong Liu,Qingfeng Yi
Since the advent of all-solid-state lithium-ion batteries (ASSLIBs), they have been widely regarded as the ideal high-temperature-resistant energy storage devices. The solid-state electrolyte, a crucial component, should possess high ionic conductivity, excellent flexibility, and significant mechanical strength. Poly(ethylene oxide)-based all-solid-state polymer electrolytes (PEO-ASSPE) appear to meet these criteria. However, PEO-ASSPE exhibits poor stability at elevated temperatures, where localized overheating and internal thermal runaway can lead to battery short-circuit failure. To address these issues, this study employs a ethylene-methacrylic acid copolymer (EMAA) as a structural support polymer, blended via a eccentric rotor mixer. The homogeneously dispersed EMAA within the PEO matrix forms an interpenetrating network structure and interacts with other components, significantly enhancing the high-temperature electrochemical stability of the composite polymer electrolytes (CPEs) while maintaining ionic conductivity. Research has demonstrated that when the EMAA content is 40 wt.%, the resulting CPE-40EMAA exhibit high ionic conductivity (4.07 × 10 −4 S cm −1 ), a high lithium-ion transference number (0.564), a broad electrochemical stability window (5.1 V), and excellent high-temperature lithium metal cycling stability (stable cycling for 800 h at current density of 0.1 mA cm −2 ), which sufficiently meets the electrochemical performance requirements for ASSPEs in high-temperature energy storage 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
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 35
·17227-17234
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IF 9.931
Zhinan Wang,Shi Wang,Ailian Wang,Xu Liu,Jie Chen,Qinghui Zeng,Lei Zhang,Wei Liu,Liaoyun Zhang
Extensive attention has been paid to metal–organic frameworks (MOFs) in the fields of gas storage/separation, sensors, catalysis, drug delivery and so on. However, the potential application of MOFs as electrolytes in lithium-ion batteries (LIBs) still needs to be further studied. In this study, showcased as the first example in the domain of all-solid-state electrolytes, a MOF covalently linked by flexible polymer chains toward a flexible stand-alone hybrid all-solid-state polymer electrolyte (HSPE) film is prepared by one-pot UV photopolymerization. Specifically, the precursors of the HSPE are composed of vinyl functionalized MOF (M-UiO-66-NH2) nanoparticles, poly(ethylene glycol) diacrylate (PEGDA), a lithium salt and a photoinitiator. It is confirmed that HSPE-1-8 (mM-UiO-66-NH2 : mPEGDA = 1 : 8) possesses over 5 times higher ionic conductivity (4.31 × 10−5 S cm−1 at 30 °C) and much better interfacial contact with Li electrodes than the SPE without incorporation of the vinyl functionalized MOF. Furthermore, at room temperature, the assembled cell of Li/HSPE-1-8/LiFePO4 exhibits outstanding rate capacity (it can reach 140, 124 and 80 mA h g−1 at 0.2, 0.5 and 1C, respectively) and excellent long cycle performance. Meanwhile, the solid cell can also be well run at 60 °C (the discharge capacity reaches 110 mA h g−1 at 2C). Combined with the superior low/high temperature performance of the cell, it is believed that the MOF-based hybrid SPE can be one of the most promising high-safety and high performance electrolytes for LIBs.
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
DOI
高影响因子
Advanced Physics Research
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2025
·
IF 2.8
Jiaxiao Qi,Yongjing Wang,Haixiong Tang,Jiayu Zhao,Yu Hong,Qiong Li,Ming Jiang,Lijie Dong
Solid-state electrolytes (SSEs) are promising for lithium batteries with higher safety, cycling stability, and energy density. Among the various SSEs, solid polymer electrolytes (SPEs) are a highly preferred choice due to their high thermal stability, thin design, and good formability. However, polymer electrolytes have low ionic conductivity, for example, polyethylene oxide (PEO), one of the most dominant polyelectrolyte materials, has a low ionic conductivity at room temperature due to its high crystallinity. Theoretically, increasing the ionic active sites by decreasing its crystallinity is an effective strategy, but this may lead to its inability to form films or poor mechanical strength. In this work, the crystallinity of PEO is reduced by introducing succinonitrile (SN), and solution blow-spun polyacrylonitrile (PAN) fiber film is employed as the skeleton of the SPE to provide good mechanical strength. PEO-LiTFSI-SN/PAN SPEs have a tensile strength of at least 4.5 MPa. To provide more Li + active sites, PEO-LiTFSI-SN/MXene@PAN composite SPEs are fabricated by doping the PAN fibers with MXene rich in functional groups. The specific capacity of the LFP|PEO-LiTFSI-SN/MXene@PAN|Li button cell reaches 134.8 mAh g −1 in the first cycle, and the capacity retention rate of 100 cycles is 75.8% at 0.5 C at room temperature.
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
Journal of Materials Chemistry A
·
2017
·Vol. 6
·期 4
·1496-1503
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IF 8.867
Xiangdong Ma,Xiaoxi Zuo,Jinhua Wu,Xiao Deng,Xin Xiao,Jiansheng Liu,Junmin Nan
A new polyethylene (PE)-supported ultra-thin blended polymer electrolyte based on polyvinylidene fluoride/hydroxyethyl cellulose (PVDF/HEC) was prepared by a simple dipping method for 5 V high voltage lithium-ion batteries (LIBs). The performances of the prepared membranes and the resulting GPEs were investigated by scanning electron microscopy, electrochemical impedance spectroscopy, linear potential sweep voltammetry, and charge–discharge cycling. The effects of the ratio of PVDF to HEC on the performance of the composite separator were further discussed. It was found that PE-supported polymer separators (PVDF : HEC = 3 : 1, by weight) present the best mechanical, thermal and wettability performance. The ionic conductivity of this GPE is 0.78 mS cm−1, which is much higher than that of PE separators (0.39 mS cm−1) at room temperature. The electrochemical stability of this GPE can reach up to 5.25 V (vs. Li/Li+). A LiNi0.5Mn1.5O4 cathode with this GPE exhibits a superior cycling stability and rate performance at room temperature. This suggests that the polyethylene (PE)-supported ultra-thin blended polymer electrolyte can be used for 5 V LIBs due to its good performance, low cost and strong operability.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
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2024
·Vol. 36
·期 48
·2409587
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IF 27.4
Jing Suo,Yaya Jia,Xinxin Zhu,Shan Liu,Xianjian Tang,Feng Liang,Ling Wang,Jun Lu
Solid sodium metal batteries (SSMBs) offer an alternative promising power source for electrochemical energy storage due to their high energy density and high safety. However, the inherent sodium dendrite growth and poor mechanical properties of electrolytes seriously limit their application. Herein, a network structure composed of polyethylene oxide-based composite polymer electrolyte (CPE) is designed with liquid metal nanoparticles (LM) for SSMBs, in which LM can move in the solid electrolyte with the electric field driven. This effect can facilitate the inactivated sodium return to the metal sodium anode, and alloy with dendrites at the same time, which is beneficial for inhibiting the growth of dendrites. The symmetric cell with the CPE containing LM achieves good cyclic stability of more than 1800 and 800 h at 0.1 and 0.2 mA cm −2 , respectively. The energy density of the pouch battery can reach 230 Wh kg −1 . In sum, LM presents great potential to be employed as a performance reinforcement filler for CPEs, which paves the way for achieving high-performance SSMBs.
研究领域:
材料科学
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储能
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电化学
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高分子科学
✓ 已验证
DOI
高影响因子
Polymers
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2019
·Vol. 11
·期 8
·1296
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IF 3.164
Wenwen Ding,Chun Wei,Shiqi Wang,Linmin Zou,Yongyang Gong,Yuanli Liu,Limin Zang
Gel polymer electrolyte (GPE) is a promising candidate for lithium-ion batteries due to its adhesion property (like a solid), diffusion property (like a liquid), and inhibition of the growth of lithium dendrite. In this paper, 2-(2-ethoxyethoxy)ethyl acrylate (EOEOEA) and LiBF4electrolyte were mixed as precursors of gel polymer electrolytes. Through thermal curing, a thermally stable GPE with high ionic conductivity (5.60 × 10−4s/cm at 30 °C) and wide room temperature electrochemical window (4.65 V) was prepared, and the properties of the GPE were measured by linear sweep voltammetry (LSV), AC impedance spectroscopy, Thermogravimetric analysis (TG), and X-ray diffraction (XRD) techniques. On the basis of the in-situ deep polymerization on a LiFePO4electrode and cellulose membrane in a battery case, EOEOEA-based GPE could be derived on both LiFePO4electrode and cellulose membrane. Meanwhile, the contact between GPE, LiFePO4electrode, and lithium electrode was promoted. The capacity retention rate of the as-prepared LiBF4-EOEOEA 30% gel lithium battery reached 100% under the condition of 0.1 °C after 50 cycles, and the Coulombic efficiency was over 99%. Meanwhile, the growth of lithium dendrite could be effectively inhibited. GPE can be applied in high-performance lithium batteries.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2014
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IF 2.112
Tao Zheng,Qian Zhou,Qian Li,Liaoyun Zhang,Huayi Li,Yuan Lin
A series of novel branched copolyethers, poly((1,3-dioxlolane)-co-((2-(2-methoxylethoxyl)methyl)oxirane)) (P(DXL-co-MEMO)) and poly((1,3-dioxlolane)-co-((2-(2-(2-methoxylethoxyl)ethoxyl)methyl)oxirane)) (P(DXL-co-ME 2 MO)), were synthesized via cationic polymerization, and the structures of these copolymers were characterized by 1 H NMR and GPC. Ionic conductivities of copolyether/lithium bis(trifluoromethanesulphonyl)imide (LiTFSI), polyethylene oxide (PEO)/LiTFSI and PEO/copolyether/LiTFSI were investigated via electrochemical impedance spectroscopy. The results showed that the ionic conductivity of the P(DXL-co-MEMO)/LiTFSI polymer electrolyte was higher than that of the P(DXL-co-ME 2 MO)/LiTFSI polymer electrolyte, and the room temperature ionic conductivity of the P(DXL-co-MEMO)/LiTFSI polymer electrolyte was up to 2.2 × 10 − 4 S cm − 1 . Compared with the PEO/LiTFSI polymer electrolyte, the ionic conductivities of the PEO/copolyether/LiTFSI composite polymer electrolytes had a great improvement, but their thermal stabilities did not obviously reduce.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Bing Cheng,Peng Du,Jin Xiao,Xiaowen Zhan,Lingyun Zhu
Utilizing aluminum-doped nano LLZO (Li6.28La3Zr2Al0.24O12) as the ceramic filler, we synthesized and optimized LLZO/PVDF/LiClO4 composite polymer electrolytes (CPEs) to achieve high ionic conductivity and good interfacial stability with metallic lithium. The research examines how the PVDF grade and the mass ratio of PVDF to LiClO4 affect the ionic conductivity, lithium metal compatibility, and overall performance of CPEs. The CPE using Kynar PVDF 741 and a PVDF-to-LiClO4 mass ratio of 2:1 emerged as superior, displaying a high ionic conductivity at room temperature (0.12 mS/cm), the lowest activation energy (0.247 eV), an extensive electrochemical stability window (approximately 4.9 V), and robust mechanical strength. In tests with lithium metal symmetric cells, the membrane facilitated over 1000 h of stable cycling at 0.1 mA cm–2 and 0.1 mAh cm–2. Furthermore, when integrated into full solid-state lithium–metal batteries with LiFePO4 cathodes, it sustained more than 80% capacity retention across 500 charge/discharge cycles at a rate of 0.5 C with constantly high Coulombic efficiencies above 99.8%, underscoring its exceptional durability and efficiency. This research provides a practical framework and benchmarks for developing LLZO/PVDF-based CPEs with high ionic conductivity and enhanced stability against lithium metals.
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
DOI
高影响因子
ELECTROCHIMICA ACTA
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2020
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IF 6.215
Qian Zhang,Kang Liu,Kun Liu,Liang Zhou,Chunjie Ma,Yaping Du
Solid lithium ion electrolyte is a critical component for the development of all solid state lithium ion battery . In this study, a solid polymer electrolyte (SPE), PVO is successfully prepared using the monomers of 1-vinylimidazole (1-Vm) and oligo(ethylene oxide) methyl ether methacrylate (OE) to investigate the introduction of small amount of imidazole moiety (8.3 mol%) of high coordination capability and its effect on lithium ion conductivity. LiTFSI and LiClO 4 are used to compare the effect from different types of lithium salt , their concentrations are regulated from 5 wt% to 20 wt%. The highest lithium ion conductivities of 1.30 × 10 −6 S cm −1 at 25 °C and 2.57 × 10 −5 S cm −1 at 70 °C are obtained when the content of LiTFSI is 15 wt%. Generally, when LiClO 4 is used, the ionic conductivity of SPE is lower than that when LiTFSI is used. But the lithium transference number with LiClO 4 is higher than LiTFSI. Both types of lithium salt show similar and relatively high electrochemical stability up to 4.7 V versus Li + /Li, and good cycling performances in lithium deposition/stripping experiments. Though imidazole group is able to coordinate to Lewis acid as used in organic synthesis, and may seriously bother the transportation of lithium ion, however the study doesn’t show the evidence. The findings may allow the design of more delicate chemical and aggregate structure in the explore of new lithium ion conducting materials.
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
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 42
·24251-24261
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IF 10.733
Yunyun Zhong,Lei Zhong,Shuanjin Wang,Jiaxiang Qin,Dongmei Han,Shan Ren,Min Xiao,Luyi Sun,Yuezhong Meng
With the rapid development of electronic devices and electric vehicles, the requirements for their safety issues and service stabilities have become more and more strict. Single-ion gel polymer electrolytes exhibit outstanding ion conduction, high safety, good flexibility and a lithium transference number close to unity, leading to extensive research. In this work, a flexible fluorinated polysulfonamide based single-ion polymer electrolyte (SIPE) was synthesized using lithium [(4-styrenesulfonyl)(fluorosulfonyl)imide] (LiSFSI), pentaerythritol tetrakis(3-mercaptopropionate) (PETMP) and pentaerythritol tetraacrylate (PET4A) via one-step in situ photoinitiated thiol–ene click reaction in plasticizers, with electrospun poly(vinylidene fluoride) (PVDF) as the standing membrane. The influence of plasticizer content was investigated and the optimized electrolyte exhibits ultra-high ionic conductivity (5.81 × 10−3 S cm−1 at 28 °C) and a high lithium transference number of 0.91, near to unity. This ionic conductivity is among the highest ionic conductivities exhibited by SIPEs reported to date. Its electrochemical stability window is up to 5.2 V. More importantly, Li/LiFePO4 cells using the prepared SIPE as both the electrolyte and separator displayed high reversible capacity at room temperature. It also exhibits excellent long-term stability and reliability as it maintains a capacity of 140 mA h g−1 at 0.2C rate even after 230 cycles without obvious decay at room temperature.
研究领域:
材料科学
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电化学
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能源存储
·
高分子化学
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电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Silin Chen,Shunchao Ma,Zhenhua Liu,Yanan Li,Hongxing Yin,Huiyu Song,Min Zhang,Mingyang Xin,Liqun Sun,Yulong Liu,Haiming Xie,Lina Cong
Solid-state polymer electrolytes are outstanding candidates for next-generation lithium metal batteries in the realm of high specific energy densities , high safeties and tight contact with electrodes. However, their applications are still hindered by the limitations that no single polymer is electrochemically stable with the oxidizing high-voltage cathode and the highly reductive Li anode, simultaneously. Herein, a bilayer asymmetric polymer electrolyte (SL-SPE) without accessional interface resistance that using poly (ethylene glycol) diacrylate (PEGDA) as a “bridge” to connect the sulfonyl (O S = O)-contained oxidation-tolerated layer and polyether-derived reduction-tolerated layer (SPE), is proposed and synthesized by sequential two-step UV polymerizations. SL-SPE can provide widened electrochemical stability window up to 5 V, while simultaneously deploying a stable Janus interface property . Eventually, the superior high-voltage (4.4 V) cycling durability can be displayed in LiNi 0.6 Co 0.2 Mn 0.2 O 2 |SL-SPE|Li batteries . This finding provides a bran-new idea for designing multifunctional polymer electrolytes in the application of solid-state batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）