Journal of Energy Storage
·
2024
·
IF 8.9
Y. Zhang,X. Lou,J. Dan,C. Franke,L. Tang,J. Li,Z. Gao,L. Zhou,B. Chen,T. Li,T. Liu
All-solid-state lithium batteries with lean (ultrathin) lithium anodes and polymer-based electrolytes e.g., polyethylene oxide (PEO), can potentially offer high energy density , reduced processing cost and improved mechanical contact at electrolyte-electrode interfaces. The non-uniform lithium deposition and inadequate mechanical strength of PEO, however, tend to cause deactivated lithium and short-circuiting by Li dendrites over lithium deposition/stripping cycles; these issues become more aggravated with lean Li anodes due to the more severe volume changes. Herein, we construct a more mechanically and chemically stable lithium-electrolyte interface by coupling alloyed lean Li anodes (<50 μm) with PEO electrolytes blended with polymers of intrinsic porosity (PIMs). The lean Li anode is fabricated by a facile and scalable cold-rolling method, which leads to a uniformly alloyed lithium anode permitting epitaxial Li deposition. Meanwhile, PIM reinforces the mechanical strength of the PEO composite electrolyte, reducing the likelihood of dendrite formation/penetration. Importantly, the introduction of both GaInSnZn and the first-generation PIM has been found to reduce the interfacial charge transfer resistance via modifying the composition of solid-electrolyte interphase. The resulting full cells with lithium iron phosphate cathodes exhibit a high specific capacity of ∼160 mAh/g, i.e., ∼0.6 mAh/cm 2 with excellent retention of 93.1 % at 120 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Dong Han,Zongchen Zhao,Wei Wang,Huanlei Wang,Jing Shi,Lili Zheng
Solid polymer electrolytes (SPEs) have attracted much attention because of their potential in improving energy density and safety. Vanadium doped ceramic matrix Li 6.7 La 3 Zr 1.7 V 0.3 O 12 (LLZVO) was synthesized by high-temperature annealing, and formed a composite electrolyte with polyethylene oxide (PEO). Compared with pure PEO electrolyte membrane, the composite electrolyte membrane exhibited better ionic conductivity (30 °C: 3.2 × 10 −5 S cm −1 ; 80 °C: 3.6 × 10 −3 S cm −1 ). The combination of LLZVO was beneficial to improve the lithium ion transference number (t Li + ) of SPE, which was as high as 0.81. The Li/SPE/LiFePO 4 battery shows good cycling ability, with a specific capacity of 142 mAh g −1 after a stable cycle of 150 cycles. Meanwhile, the symmetrical lithium battery with composite electrolyte can work continuously for 1200 h without short circuit at the current density of 0.1 mA cm −2 at 50 °C, and the capacity is 0.176 mAh. Vanadium doped ceramic matrix LLZVO as an active ionic conductor , improved the overall performance of solid electrolyte.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Xiaodong Bai,Chaoliang Zheng,Heng Zhang,Jian Liu,Panpan Wang,Baojia Xia,Jianling Li
PEO-based all-solid-state electrolytes are extensively utilized and researched owing to their exceptional safety, low-mass-density, and cost-effectiveness. However, the low oxidation potential of PEO makes the interface problem with the high-voltage cathode extremely severe. In this work, the impedance of PEO-based all-solid-state batteries with high-voltage cathode (NCM811) was studied at different potentials. The Nyquist plots displayed a gyrate arc at low-frequencies for NCM811/PEO interface. Based on the kinetic modeling, it was deduced that there is a decomposition reaction of PEO-matrix in addition to de-embedded reaction of NCM811, and the PEO intermediate product (dehydra-PEO) adsorbed on the electrode surface leading to low-frequency inductive arcs. Furthermore, the distribution of relaxation time shows the dehydra-PEO results in the kinetic tardiness of the charge transfer process in the temporal dimension. Hence, an artificial interface layer (CEI x ) was modified on the surface of NCM811 to regulate the potential of cathode/electrolyte interface to prevent the high-voltage deterioration of PEO. NCM/CEI x /PEO batteries exhibit capacity retentions of 96.0%, 84.6%, and 76.8% after undergoing 100 cycles at cut-off voltages of 4.1, 4.2, and 4.3 V, respectively. Therefore, here the failure mechanism of high-voltage PEO electrolyte is investigated by EIS and a proposed solving strategy is presented.
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 POLYMER RESEARCH
·
2025
·Vol. 32
·期 8
·1-12
·
IF 2.8
Wang Kui,Ran Haodong,Fu Yeqi,Huang Weijiang,Tian Qin,Yan Wei
Polymer solid-state electrolytes hold significant promise for all-solid-state lithium-ion batteries, but they also suffer from critical limitations including high flammability, low ionic conductivity, and poor mechanical properties. In this work, aluminum phosphate (AlPO 4 )-coated silica (SiO 2 ) (SiO 2 @AlPO 4 ) synergistic flame retardant was fabricated, and the influence of SiO 2 @AlPO 4 on the mechanical properties, the flame retardancy, and the ionic conductivity of poly(ethylene oxide) (PEO)/Li salt ionic conductor was studied. For PEO/Li/SiO 2 @AlPO 4 10 composite electrolyte, the strength and the modulus increased by 38.5% and 80.7%, respectively, compared with PEO/Li electrolyte, and the ionic conductivity almost was the highest among all samples in the entire temperature rang. For all PEO composite electrolytes, the limiting oxygen index (LOI) increased and the total heat release (THR) reduced with the increase of SiO 2 @AlPO 4 content. Results show that SiO 2 @AlPO 4 can not only improve the strength, the modulus, and the flame retardancy of PEO but also improve its ionic conductivity, the SiO 2 @AlPO 4 was demonstrated as an excellent synergistic filler for PEO solid-state electrolytes.
研究领域:
材料科学
·
高分子科学
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电化学
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 4
·2007-2017
·
IF 2.4
Li Bangxing,Yi Xianlin,Xie Zhenjun,Wu Fei,Kang Xing,Kang Shuai,Hu Xiaolin
Composite solid electrolyte (CSE), especially the composite room temperature solid electrolyte (CRTSE), is emerging as the promising electrolyte for all-solid-state lithium batteries (ASSLB) due to their ability to combine the desirable properties of ceramic and polymer-based electrolytes and the room temperature operation condition. In this paper, the CRTSE with polyethylene oxide (PEO), bis(fluorosulfonyl)imide (LiTFSI), succinonitrile (SN), LLZTO inorganic fillers, and cross-linked ethoxylated trimethylolpropane triacrylate (ETPTA) was proposed. With the help of lithium dendrite suppression via cross-linked microscopic pore structure, enhancement of the ionic conductivity via LLZTO fillers, and wide electrochemical window via SN, the obtained LCSE showed high ionic conductivity (2.12 × 10 −4 S cm −1 ), high Li + transfer number ( t Li + = 0.55), and stable electrochemical window (5.0 V vs Li/Li + ) at room temperature. The Li symmetrical cell with LCSE can cycle over 500 h stably with current density of 0.1 mA cm −2 and 0.5 mA cm −2 at room temperature. The full solid-state LiFePO 4 cell can successfully work over 200 cycles with capacity retention ratio of about 70% at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
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高分子化学
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无机非金属材料
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电池技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Huiyao Li,Zhuoran Ao,Yu Wan,Yaru Liang,Peiguang Li,Youlan Zou
The improvement of ionic conductivity and Li dendrite inhibition capability of poly(ethylene oxide)(PEO)-based solid polymer electrolytes(SPEs) is urgent for the development of all-solid-state lithium metal batteries (ASSLMBs). Here, intercalated composite consisted with PEO polymer chains inserted into the clay gallery of the formamide intercalated kaolinite (KM) is formed. Due to this alternating organic-inorganic layered structure, the crystallinity of PEO decreases to 26.2% and the ion conductivity of SPE with 3% KM of PEO mass added(PEO+KM-3) increased to 1.43 × 10 −3 S cm −1 at 60 °C. Besides, bis (trifluoromethane) sulfonimide lithium salt (LiTFSI) interacts with formamide to form a complex, making the local solvated Li + transports close to a quasi-solid model. PEO+KM-3 SPE exhibits a good inhibition effect on lithium dendrites due to the formation of organic silicon at lithium anode side, and Li/ PEO+KM-3/Li cell works steadily for more than 1600 h at 60 °C with 0.1 mA cm −2 . The assembled Li//LiFePO 4 cell provides a capacity of 118 mAh g −1 after 500 cycles at 0.5 C at 60 °C.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2023
·
IF 9.4
Xiao Chen,Yinda Li,Yunhao Lu,Jian Xie,Cheng Huang,Xiongwen Xu,Jian Tu,Xinbing Zhao,Tiejun Zhu
LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) is considered as a promising cathode for high-energy-density solid-sate Li metal battery for its high theoretical capacity. However, the high oxidizability and structural instability during charge limit its practical applications. In this work, 1% (in mass) of nanosized Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) was coated on NCM811 to enhance its electrochemical stability with a ceramic/polymer composite electrolyte. A robust, ultrathin (11 μm) composite electrolyte film was prepared by combining poly(vinylidene fluoride) (PVDF) with polyethylene oxide (PEO)-Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZTO). An in-situ polymerization process was used to enhance the interface between the PVDF/PEO-LLZTO (PPL) composite electrolyte and the LATP-coated NCM811 (LATP-NCM811). Coin-type Li|LATP-NCM811 cell with the PPL electrolyte exhibits stable cycling with an 81% capacity retention after 100 cycles at 0.5 C. Pouch-type cell was also fabricated, which can be stably cycled for 70 cycles at 0.5 C/1.0 C (80% retention), and withstand abuse tests of bending, cutting and nail penetration. This work provides an applicable method to fabricate solid-state Li metal batteries with high performance.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hao Xu,Shuai Liu,Zhiang Li,Fan Ding,Jie Liu,Weimin Wang,Kaikai Song,Ting Liu,Lina Hu
Solid polymer electrolytes (SPEs) have been considered the most promising separators for all-solid-state lithium metal batteries (ASSLMBs) due to their ease of processing and low cost. However, the practical applications of SPEs in ASSLMBs are limited by their low ionic conductivities and mechanical strength. Herein, we developed a three-dimensional (3D) interconnected MXene (Ti 3 C 2 T x ) network and Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) particles synergistically reinforced polyethylene oxide (PEO)-based SPE, where the association of Li + with ether-oxygen in PEO could be significantly weakened through the Lewis acid-base interactions between the electron-absorbing group (Ti–F, −O–) of Ti 3 C 2 T x and Li + . Besides, the TFSI − in lithium salts could be immobilized by hydrogen bonds from the Ti–OH of Ti 3 C 2 T x . The 3D interconnected Ti 3 C 2 T x network not only alleviated the agglomeration of inorganic fillers (LLZTO), but also improved the mechanical strength of composite solid electrolyte (CSE). Consequently, the assembled Li||CSE||Li symmetric battery showed excellent cycling stability at 35 ℃ (stable cycling over 3000 h at 0.1 mA cm −2 , 0.1 mAh cm −2 ) and −2 ℃ (stable cycling over 2500 h at 0.05 mA cm −2 , 0.05 mAh cm −2 ). Impressively, the LiFePO 4 ||CSE||Li battery showed a high discharge capacity of 145.3 mAh/g at 0.3 C after 300 cycles at 35 ℃. This rational structural design provided a new strategy for the preparation of high-performance solid-state electrolytes for lithium metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Guofeng Rui,Huilin Fan,Xiangmin Tang,Zian Zhao,Lei Tan,Xiaotong Wu,Yujie Song,Faiza Meharban,Kailong Zhang,Yuanyuan Cui,Chao Lin,Xiaopeng Li
The development of solid-state electrolytes with high ionic conductivity and wide electrochemical window is crucial for the advancement of lithium batteries. In this work, we introduce a polyethylene oxide (PEO)-based electrolyte hybridized with the polyacrylonitrile coated lithiated palygorskite fibers (Li-Pal@PAN) to enhance ionic conductivity and electrochemical stability. First, the Li-Pal@PAN serves as a one-dimensional lithium-ion conduction pathway in the solid-state electrolyte with a low interfacial energy barrier for Li + transfer. Then, it facilitates the formation of a composite solid electrolyte interface (SEI) that contains Li 3 N, effectively mitigating side reactions between the lithium metal anode and the electrolyte. As a result, the Li-Pal@PAN enhances the oxidative stability of the PEO-based electrolyte, increasing its oxidation potential to 4.9 V. Electrochemical characterization further demonstrates that a Li||Li symmetric cell using the PEO/Li-Pal@PAN composite exhibits stable cycling performance over 1000 h at a current density of 0.1 mA cm −2 . Moreover, all-solid-state lithium metal batteries utilizing a high-voltage ternary cathode (LiNi 0.6 Mn 0.2 Co 0.2 O 2 , NCM622) deliver a high-rate capacity of 117 mAh g −1 at 0.3C. These results underscore the significant potential of PEO/Li-Pal@PAN composites in improving the performance, stability, and longevity of all-solid-state Li metal batteries, offering a promising pathway for their application in advanced energy storage system.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米技术
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2020
·
IF 2.029
Wanwan Wang,Zhiqiang Fang,Ming Zhao,Yan Peng,Jiujun Zhang,Shiyou Guan
In this work, composite membranes consisting of triethylmethylammonium bis(fluorosulfonyl)imide (N 1222 FSI), poly(ethylene oxide) (PEO) and lithium bis(fluorosulfonyl) imide (LiFSI) have been produced as solid polymer electrolytes (SPEs). The composite SPEs provide good mechanical property, high ionic conductivity at 50 °C, high electrochemical and thermal stability as well as superior interfacial compatibility with lithium metal. Moreover, Li/LiFePO 4 cells containing the best-performing SPE exhibit high discharge capacity and excellent cycling performance. The results show that the novel composite SPEs might be promising electrolytes applied in all-solid-state lithium batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2018
·Vol. 36
·期 8
·934-942
·
IF 2.016
Zhao Zhong-Fu,Liu Pei-Ying,Zhang Chun-Qing,Liu Wei,Wang Yan-Hui,Tang Tao,Ding Yi-Fu,Zhang Yan-Dong,Meng Fan-Zhi
Poly(ethylene oxide) (PEO) was controllably grafted from styrene- b -(ethylene- co -propylene)- b -styrene (SEPS) backbones by combining lithiation of styrenic units and living monomer-activated anionic ring-opening polymerization of ethylene oxide (EO) monomers with the aid of co-initiators triisobutyl aluminum. The as-synthesized SEPS- g -PEO copolymers were characterized by SEC, 1 H-NMR, FTIR, SAXS, AFM and DSC. When the branch length is relatively small, increase of PEO fraction leads to the increase of the correlation length between neighboring hard domains, but the degree of correlation reduces. When the branch length is relatively large, the phase-separated structures become random both in terms of size and spatial correlation, and macro-phase separated structures appear. The crystallization behavior of the PEO branches can be effectively inhibited in SEPS- g -PEO, so no significant crystallization takes place until the fraction of PEO branches is 20.1 wt%, which greatly promotes the rapid delivery of hydrophilic drugs in the hot-melting pressuresensitive adhesives (HMPSAs) based on SEPS- g -PEO. Their cumulative release amount of a model drug could achieve 80%, more than twice the value in the HMPSAs based on linear PEO-containing styrenic block copolymers.
研究领域:
高分子科学
·
材料科学
·
药学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 5
·期 21
·7767-7777
·
IF 6.482
Jiawei Wu,Jing Chen,Xiaodong Wang,Anan Zhou,Zhenglong Yang
For a higher safety and energy density, solid-state electrolytes with a better mechanical strength and thermal and electrochemical stability are a perfect choice. To improve the performance of PEO, using low-cost inert fillers may bring amorphous regions but limits easily appear. This paper aims to promote a network of SiO2 nanowires by applying a novel in situ crosslinking structure composed of PEA, γ-GPS and mPEG with siloxane segments as the junctions. The modified network can significantly reduce the crystallinity and glass transformation temperature, which also reduces the activation energy of ion transfer. Crosslinking can be highly influential as a comprehensive function of segment relaxation and ion complexation. The optimal sample (PEO–SNWAKP20) possesses a conductivity of 2.52 × 10−4 at 40 °C and a wide electrochemical window of 5.1 V. This unique structure also brings ideal shape stability under high temperatures, thus realizing stable cycling for 800 h at 0.1 mA cm−2. The rate and cycling performance of the LiFePO4 cell are also improved, achieving a maximum of 131.2 mAh g−1 under 0.5C with 89.3% retention after 50 cycles at 50 °C, realizing 24% improvement compared with single SNW reinforcement. By modifying the electrode, its performance can be further raised to 154 and 130.4 mAh g−1 under 0.5C and 1C, respectively, reserving 97.9% of its capacity after 100 cycles. This may inspire new strategies for synthesizing high-performance composite electrolytes.
研究领域:
材料科学
·
电化学
·
高分子科学
·
纳米技术
·
储能技术
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）