JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yang Chen,Jianda Niu,Siheng Zhang,Zhixian Dong,Jinbao Xu,Caihong Lei
The quest for next-generation energy storage systems has led to the development of high-voltage all-solid-state lithium metal batteries (ASSLMBs), which promise unprecedented energy density and safety. However, the challenge lies in creating of a robust electrolyte that can meet high room temperature ionic conductivity, Li-ion transference number and a wide electrochemical stability window (ESW) while maintaining flexibility and compatibility with lithium metal anodes. Here, novel polyurethane-based composite polymer electrolytes (CPEs) have been successfully fabricated by the cross-linking reaction of poly(1,5-dioxepan-2-one) diols (poly(ether-ester) soft segment) and hexamethylene diisocyanate trimer (hard segment) (PDH) blending with inorganic NASICON-type ceramic fillers Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (PDH@LATP). The resulting CPE exhibits an impressive ionic conductivity of 1.65 × 10 −4 S cm −1 at room temperature and a Li-ion transference number of 0.63, which is attributed to the amorphous structure of PDH and the formation of an interconnected ionic pathway by the inorganic filler. The incorporation of LATP also improve the ESW of CPE to 5.3 V while maintaining good mechanical properties. Therefore, the assembled LiFePO 4 /PDH@LATP/Li batteries displayed low interfacial resistance, Li dendrite suppression, high specific capacity and excellent cyclic performance. The high-voltage LiNi 0.5 Co 0.2 Mn 0.3 O 2 /PDH@LATP/Li batteries also exhibits good cycling performance and durability. The design principles and materials presented herein provide a blueprint for the next wave of ASSLMBs.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yuchen Wu,Ming Chao,Chengyi Lu,Hanyu Xu,Kai Zeng,Decheng Li,Ruizhi Yang
Surface functionalization is one effective strategy for optimizing the stability of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) with Li metal anodes and the compatibility between the components of an electrolyte for lithium battery. Herein, a bifunctional modification layer induced by the silane coupling agent (SCA) and ionic liquid (IL) are successfully introduced onto the surface of LATP particles (defined as [email protected] ) through chemical grafting and ion exchange strategies. Benefitting from the synergistic effect between the protection of modification layer and the effectively reduced interaction of PEO chain segments with Li + , the compatibility of LATP with the Li metal anode is improved, and the dispersion of LATP in PEO matrix is enhanced, a faster Li + transfer is thereby enabled. As a result, thus-prepared [email protected] composite polymer electrolyte (CPE) shows an excellent electrochemical property with high ionic conductivity (1.455 × 10 −3 S cm −1 at 60 °C), enhanced Li-ion transference number (0.40), wide electrochemical stability window (4.76 V vs. Li + /Li) and favorable Li metal compatibility (over 1200 h). Furthermore, separately assembled Li/ [email protected] CPE/LFP coin full cells and pouch cells verify the operational feasibility under extreme conditions. This work paves a new way to protect LATP and promote its practical application in all-solid-state lithium batteries.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yali Liu,Youlong Xu,Yuan Zhang,Cheng Yu,Xuekai Sun
Composite solid electrolytes (CSEs) exhibit great potential due to their advantages of both sufficient strength and high ionic conductivity . However, their interfacial impendence and thickness hinder potential applications. Herein, a thin CSE with good interface performance is designed through the combination of immersion precipitation and in situ polymerization. By employing a nonsolvent in immersion precipitation, a porous poly(vinylidene fluoride-cohexafluoropropylene) (PVDF-HFP) membrane could be rapidly created. The pores in the membrane could accommodate sufficient well-dispersed inorganic Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) particles. Subsequent in situ polymerized 1,3‑dioxolane (PDOL) further protects LATP from reacting with lithium metal and supplies superior interfacial performance. The CSE has a thickness of ∼ 60 μm, ionic conductivity of 1.57 × 10 −4 S cm −1 , and oxidation stability of 5.3 V. The Li/1.25LATP-CSE/Li symmetric cell has a long cycling performance of 780 h at 0.3 mA cm −2 for 0.3 mAh cm −2 . The Li/1.25LATP-CSE/LiFePO 4 cell exhibits a discharge capacity of 144.6 mAh/g at 1C and a capacity retention of 97.72 % after 300 cycles. Continuous depletion of lithium salts due to the reconstruction of the solid electrolyte interface (SEI) may be responsible for battery failure. The combination of the fabrication method and failure mechanism gives new insight into designing CSEs.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Erqing Zhao,Jiaming Li,Yudi Guo
Nasicon-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is a potential electrolyte for lithium-ion batteries due to its appropriate conductivity and good air stability. Herein, LATP was co-doped with Ga and Si to improve its ionic conductivity. The Li 1.325 Al 0.29 Ga 0.01 Ti 1.7 Si 0.025 P 2.975 O 12 (LAGTSP025) electrolyte exhibits an ionic conductivity of 8.92 × 10 −4 S/cm at 30 °C, which is mainly ascribed to its enlarged crystal lattice and high densification. This electrolyte material was incorporated into poly(ethylene oxide) (PEO) polymer to form a polymer-based PEO-LITFSI-LAGTSP025 solid composite electrolyte (SCE). The optimized SCE shows a high ionic conductivity of 5.33 × 10 −4 S/cm and excellent interfacial stability at 60 °C. Consequently, a Li/SCE/Li symmetric battery can stably cycle for 1600 cycles at a current density of 0.1 mA/cm 2 . Moreover, an LFP/SCE/Li all-solid-state lithium-ion battery (ASSLIB) maintains a discharge capacity of 143.56 mAh/g and exhibits 95.21% capacity retention after 300 cycles at 0.5C. This work demonstrates PEO-LITFSI-7.5LAGTSP025 SCE is a potential solid electrolyte for ASSLIBs.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2020
·Vol. 45
·期 5
·6876-6887
·
IF 3.741
Erqing Zhao,Yudi Guo,Yuan Xin,Guangri Xu,Xiaowei Guo
Summary Poly(ethylene oxide) (PEO) polymer electrolyte has been regarded as a potential solid electrolyte which can be applied in all-solid-state lithium-ion batteries (ASSLIBs). Nevertheless, low electrochemical properties and poor electrolyte/Li anode interfacial stability hinder its further application. In our work, the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) nanomaterials with Nasicon structure have been synthesized using a simple solvent-thermal method, followed by being embedded into PEO polymer to form LATP filled PEO solid composite electrolytes. Effects of LATP content and particle size on electrochemical performances of solid electrolytes have been studied. By adjusting the calcination temperature, the uniformly distributed Nasicon-type LATP powders with different sizes can be obtained. The electrochemical properties of PEO polymer electrolyte have been effectively enhanced by filling LATP nanoparticles. The composite electrolyte filled with 5 wt% LATP particles calcined at 850°C exhibits a high ionic conductivity of 5.24×10 −4 S cm −1 at 55°C, which has a high electrochemical stability window of over 5 V versus Li/Li + and a superior interfacial stability with Li metal. A LiFePO 4 /Li ASSLIB fabricated with the optimum composite electrolyte shows the excellent rate capability, and its discharge capacities at 0.2C, 0.5C, 1C, and 2C are 151.97, 151.56, 145.51, and 128.02 mAh·g −1 . Moreover, the discharge capacity of the cell decreases from 151.69 to 130.53 mAh·g −1 after 100 charge-discharge cycles at 0.5C rate, and the corresponding capacity retention is 86.05%. These results demonstrate that LATP nanoparticles obtained via the solvent-thermal method are the alternative fillers for PEO polymer electrolyte.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiangming Cui,Xin Chen,Changzheng Lin,Jingzhao Wang,Zirui Guo,Mi Zhou,Zhouzhou Yao,Jiaxin Zhang,Shiyi Sun,Jianan Wang,Wei Yan
The advancement of high-energy–density and intrinsically safe all-solid-state lithium metal batteries (ASSLMBs) is crucial for the comprehensive electrification of energy consumption. Nevertheless, intrinsic defects in solid-state electrolytes (SSEs) and suboptimal interfacial contacts often lead to uncontrolled dendritic growth during practical battery operation. To address these challenges, this study proposes an integrated optimization strategy for bulk-phase defects and interfacial contacts of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) SSEs based on ultra-fast Joule heating sintering (UHS) technique. Introducing specific sintering auxiliaries and a dual-process sintering approach can achieve the rapid densification of LATP SSEs. Additionally, the thermal pulse welding (TPW) technique for the integrated anode/SSE/cathode further provides superior SSE/electrode interface contact, facilitating the in-situ formation of a continuous ion-conducting network for improved electrochemical kinetics. The optimized Li||LATP||NCM811 ASSLMBs demonstrate exceptional specific capacity (185.9 mAh/g at 0.2 C) and robust cycling stability (90.9 % capacity retention after 100 cycles). This integrated optimization strategy can offer a critical technical reference for the rapid fabrication of high-performance ASSLMBs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Xianli Song,Haitao Zhang,Danfeng Jiang,Lipeng Yang,Jiahe Zhang,Meng Yao,Xiaoyan Ji,Gongying Wang,Suojiang Zhang
Solid-state batteries , which exhibit characteristics including uniform Li deposition, non-flammability and low interfacial resistance, are desirable for novel energy storage devices. Herein, a self-standing, fireproof and electrochemically stable organic-inorganic composite ionogel electrolyte was carefully designed and prepared by using polymerized ionic liquid (PIL), ionic liquid (IL), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium aluminum titanium phosphate (LATP) nanoparticles . The incorporation of LATP nanoparticles into polymer backbone was found to facilitate ionic transport due to the homogenous Li + distribution, which would further boost the ionic conductivity and mechanical properties. In addition, the introduction of IL favored the reduction of interface resistance. Benefiting from the nonflammability, the thermal shrinkage performance of as-prepared electrolyte could stand over a broad operating temperature range. A Li/Li symmetric cell containing optimized PIL-14 wt% LATP could be cycled steadily for over 2000 h at 50 °C. A lithium metal battery containing composite ionogel electrolyte exhibited an outstanding specific capacity of 145 mAh g −1 and 95% capacity retention at 50 °C even after 100 cycles. This study indicates that the co-employment of IL and inorganic nanoparticle is an effective strategy for the construction of organic-inorganic hybrid electrolytes for high-safety solid-state lithium metal batteries (LMBs).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Yudi Guo,Jiaming Li,Erqing Zhao
Sc and B doping enlarges the electrolyte lattice and reduces grain boundaries. • The LASBTP003 electrolyte shows an optimal ionic conductivity of 0.882 mS/cm. • PVDF-HFP-LITFSI-SN-10LASBTP003 SCE displays enhanced electrochemical performance. • Li/SCE/ LiFePO 4 full cell shows an excellent long-term cycling stability. NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), with excellent air stability, a wide electrochemical window and low cost, is an attractive electrolyte for lithium-ion batteries (LIBs). However, its low electrical conductivity and poor interface contact impede its practical applications. Herein, LATP was doped with Sc and B elements, and the properties of the resultant LATP-based solid electrolytes were thoroughly studied. The structural characterization suggests that doping of Sc and B densifies the electrolyte structure, enlarges the lattice, and reduces grain boundaries. The optimized Li 1.3 Al 0.24 Sc 0.03 B 0.03 Ti 1.7 (PO 4 ) 3 (LASBTP003) achieves a high ionic conductivity of 8.82 × 10 −4 S/cm, equivalent to 4-fold that of pure LATP. The composition of LASBTP003 electrolyte with PVDF-HFP and SN results in PVDF-HFP-LITFSI-SN-LASBTP003 solid composite electrolyte with enhanced ionic conductivity of 8.89 × 10 −5 S/cm, attributed to the reduced PVDF-HFP crystallization and established lithium-ion migration pathways at LASBTP003/PVDF-HFP interface. PVDF-HFP-LITFSI-SN-10LASBTP003 also displays a wide electrochemical window of 4.85 V and a high Li-ion transference number of 0.41. The Li/ PVDF-HFP-LITFSI-SN-10LASBTP003/Li symmetric battery delivers a long cycling of 1800 h under a current density of 0.1 mA/cm 2 . Moreover, LiFePO 4 /PVDF-HFP-LITFSI-SN-10LASBTP003/Li full cell delivers a long-term cycling stability, with a capacity retention of 86.92% after 1000 cycles at 0.5C. Overall, the proposed PVDF-HFP-LITFSI-SN-10LASBTP003 has great potential for LIB applications. Download: Download high-res image (195KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）