JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yingmin Jin,Xin Zong,Xuebai Zhang,Chaojun Liu,Dong Li,Zhenggang Jia,Gen Li,Xuanguang Zhou,Junhua Wei,Yueping Xiong
Composite solid electrolyte (CSE) consisting of Li + conductive fillers and polymer matrix has become attractive for high energy-density lithium batteries . Current researches focus on the “ceramic in polymer”-type CSE due to the severe agglomeration of ceramic particles. Consequently, the destroyed percolation network impedes the further improvement in ionic conductivity . In this work, we report a novel structural design of ceramic-enriched CSE consisting of three-dimensional (3D) interconnected Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), polyvinylidene fluoride (PVDF) and LiN(SO 2 ) 2 (CF 3 ) 2 (LiTFSI). The 3D LATP network is constructed through the surface functionalization of LATP particles by polymethyl methacrylate (PMMA). Owing to the intermolecular interaction between PMMA and PVDF, the incorporation of PMMA-coated LATP (denoted as LATP@PMMA) enables the uniform distribution of ceramic phase and generates interconnected LATP network. Noticeably, such an electrolyte maximizes the utilization of inorganic fillers through the facile treatment of zero-dimensional materials, which is comparable to those 3D template-derived fillers. Furthermore, continuous Li + conduction pathways through LATP framework and LATP/PVDF interphase are guaranteed by the enhanced affinity of LATP towards PVDF matrix and the intrinsic Li + complexation capability of PMMA. Remarkable cycling performances of the LiNi 0.5 Co 0.2 Mn 0.3 O 2 /LATP@PMMA-PVDF/Li batteries confirm the feasibility of 3D ceramic-enriched composite electrolyte in the application of solid-state lithium batteries.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiangchao Zhao,Yuansong Luo,Xiujian Zhao
NASICON-type solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has become an excellent substitute for organic liquid electrolytes due to its high ionic conductivity and exceptional air stability. However, its application is limited by its poor sintering characteristics and high grain boundary resistance. In this study, TeO 2 was introduced into LATP as a sintering aid to promote its sintering, and its properties were measured by XRD , SEM, XPS, EIS and dilatometry . The results show that the addition of TeO 2 can form eutectic liquid phase in LATP ceramic pellets during sintering, thus effectively promoting particle sintering. Not only the grain size was greatly increased, but also grain boundary and pore defects were reduced. With the help of TeO 2 , the performance of LATP is greatly improved when sintered at only 750 °C, the relative density and total ionic conductivity reached 90.64% and 0.207 mS/cm, respectively. The highest total ionic conductivity of 0.279 mS/cm and the highest relative density of 93.81% were obtained when sintered at 800 ℃ and 950 ℃, respectively. However, due to the volatilization of Li and Te at high temperature, the relative density and total ionic conductivity of LATP with TeO 2 added sintered at high temperature have only a small increase compared to that without addition. In conclusion, this study provides a feasible scheme for improving LATP performance.
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DOI
高影响因子
IONICS
·
2020
·Vol. 26
·期 12
·6049-6056
·
IF 2.394
Ren Yaqi,Deng Hao,Zhao Hong,Zhou Zheng,Wei Zhaohuan
A simple and effective method was developed and used to improve the conductivity and density of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 solid–state electrolyte. The raw powders were synthesized through two different methods to expand the particle size distribution, which could improve the sintered density and the grain boundary connection of the of LATP electrolyte. Through this method, the relative density of the electrolyte made of mixed powders can reach to 97% compared with the 92% and 95% for electrolyte made of single solid-state reaction powder and sol-gel reaction powder, respectively. The conductivity test shows that this electrolyte has high total ion conductivity of 5.23 × 10 −4 S cm −1 at room temperature with the grain boundary conductivity of 6.11 × 10 −4 S cm −1 . With the merits of high density and ion conductivity, this solid-state electrolyte shows good rate capability and cycle performance in aqueous lithium-oxygen batteries.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yue Jiang,Zhiwei Hu,Qiaohong Yan,Xiaohong Zhu
All-solid-state lithium batteries have great potential applying to the fields of transportation and portable devices because of their high safety and energy density as the power source. As a critical component of device, solid-state electrolyte has been paid much attention. Given the excellent physical and chemical stability, Li 1+ x Al x Ti 2- x (PO 4 ) 3 (LATP)-based electrolyte has been considered as one of the most promising electrolytes for the next generation batteries. However, a further promotion of its ionic conductivity becomes extremely difficult, originating mainly from the poor connection of grains and a low relative density of LATP. Here, the nanosized and homogenous LATP ( x = 0.3) powders were synthesized through reducing the agglomeration of precursor powders and preparing at low temperatures. It is revealed that uniformly superfine LATP powders are able to improve the microstructure of grain boundaries during the pellet sintering process, thereby reducing the grain boundary resistance. Furthermore, as-synthesized nanosized powders mixed with Bi 2 O 3 additive present a better enhancement on the connection of grains and the relative density in LATP. On the basis of this understanding, we prepared LATP electrolytes with 0.5 wt% Bi 2 O 3 exhibiting a high ionic conductivity of 8.56 × 10 −4 S/cm, a high relative density of 94.4 % and a low activation energy of 0.27 eV, which is demonstrated as a prospective electrolyte in all-solid-state lithium battery LiFePO 4 /PEO/LATP/PEO/Li.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yingmin Jin,Chaojun Liu,Zhenggang Jia,Xin Zong,Dong Li,Mengyu Fu,Junhua Wei,Yueping Xiong
Solid-state electrolytes have become a promising approach for rechargeable lithium batteries with enhanced safety and high energy density . However, the rigid nature of ceramic electrolytes would result in the poor interfacial contact, and polymer electrolytes suffer from inferior electrochemical performance and unsatisfied mechanical strength to suppress Li dendrites. In this work, we report a flexible Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP)-reinforced polyvinylidene fluoride (PVDF)-based solid composite electrolyte with superior performances in terms of high ionic conductivity (1.64 × 10 −3 S cm −1 at room temperature), high lithium transference number (0.45), wide electrochemical window (0–4.76 V) and enhanced tensile strength (14.2 MPa). The existence of LATP permits the utilization of high Li-salt content which increases the charge carrier concentration. Meanwhile, LATP facilitates the Li + conduction process and enhances the mechanical strength, leading to a long-term electrochemical stability of symmetric Li cell for 600 h at 0.2 mA cm −2 . Assembled with LiFePO 4 cathode, the all-solid-state Li battery delivers a high capacity of 153.7 mA h g −1 at 0.3 C with remarkable cycle stability. This work provides a bright future for composite polymer electrolytes in the application of all-solid-state lithium batteries .
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Feng Chen,Xinqi Zhu,Weilong Dai,Congcong Yao,Junchao Qian,Zhigang Chen,Chengbao Liu
The high nickel cathode LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 (combination of NCM and NCA) coated with the Li + conductor Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 in various mass fractions was prepared via using the typical sol-gel process. The LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 after the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 covering demonstrated the similar crystal structure and particle morphology in comparison with the bare cathode. The electrochemical test results indicated the superior rate capabilities and cycling performances were acquired for the coated cathodes due to the presence of the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 film on the surface of LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 . The 2 wt% Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 covered LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 exhibited the greatest electrochemical performance with a large cycle retention rate of 90.9% over 300 cycles at 45 °C, rate capacity of 139.8 mAh g −1 at 5 C current density, and a high capability of 126.5 mAh g −1 at − 30 °C, superior than those (80.9%, 99.8 mAh g −1 , 71.3mAh g −1 accordingly) of the bare cathode. In addition, the safety and environmental reliability tests of pouch batteries suggested the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 film on the surface of cathode acted as a protective layer to promote the stability for application.
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产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Yaqi Chen,Xieyu Xu,Jianli Cheng,Xuyang Wang,Dawei Wang,Yongjing Wang,XingXing Jiao,Jian Chen,Shizhao Xiong,Zhongxiao Song,Yangyang Liu
All-solid-sate batteries (ASSBs) with a NASICON-type solid-state electrolyte (SSE) of Li1.3Al0.3Ti1.7(PO4)3 (LATP) can be accepted as a promising candidate to significantly improve safety and energy density due to their high oxidation potential and high ionic conductivity. However, thermodynamic instability between the cathode and LATP is scarcely investigated during cosintering preparation for the integrated configuration of ASSBs. Herein, the structural compatibility between commercially layered LiNi0.5Co0.2Mn0.3O2 (NCM523) and LATP SSE was systematically investigated by cosintering at 600 °C. It is noticeable that an extreme side reaction between Li from NCM523 and phosphate from LATP happens during its cosintering process, leading to a severe phase transition from a layered to a spinel structure with high Li/Ni mixing. Consequently, the capacity of NCM523 is lost during the preparation of the NCM523–LATP composite cathode. Based on this, we suggested that the interface modification of the NCM523/LATP interface is valued significantly to inhibit this extreme side reaction, quickening the application of LATP-based ASSBs.
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DOI
高影响因子
Energy & Environmental Materials
·
2022
·Vol. 6
·期 6
·e12531
·
IF 13.443
Tian Gu,Likun Chen,Yanfei Huang,Jiabin Ma,Peiran Shi,Jie Biao,Ming Liu,Wei Lv,Yanbing He
The poor contact and side reactions between Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) and lithium (Li) anode cause uneven Li plating and high interfacial impendence, which greatly hinder the practical application of LATP in high-energy density solid-state Li metal batteries. In this work, a multifunctional ferroelectric BaTiO 3 (BTO)/poly(vinylidene fluoride-co-trifluoroethylene-co-chlorotrifluoroethylene) (P[VDF-TrFE-CTFE]) composite interlayer (B-TERB) is constructed between LATP and Li metal anode, which not only suppresses the Li dendrite growth, but also improves the interfacial stability and maintains the intimate interfacial contact to significantly decrease the interfacial resistance by two orders of magnitude. The B-TERB interlayer generates a uniform electric field to induce a uniform and lateral Li deposition, and therefore avoids the side reactions between Li metal and LATP achieving excellent interface stability. As a result, the Li/LATP@B-TERB/Li symmetrical batteries can stably cycle for 1800 h at 0.2 mA cm −2 and 1000 h at 0.5 mA cm −2 . The solid-state LiFePO 4 /LATP@B-TERB/Li full batteries also exhibit excellent cycle performance for 250 cycles at 0.5 C and room temperature. This work proposes a novel strategy to design multifunctional ferroelectric interlayer between ceramic electrolytes and Li metal to enable stable room-temperature cycling performance.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Zhenyuan Shi,Shuanghui Li,Bolin Chen,Zihan Chen,Tao Li,Yingxue Chen,Dandan Wang,Liming Lin,Jun Gao,Jingzheng Weng,Minquan Tian
To enhance the lithium ion transport properties of solid polymer electrolytes, a novel lithium salt—poly(acrylic acid)–boric acid–anhydrous lithium hydroxide–oxalic acid composite (LiPAAOB)—was designed and synthesized. This composite lithium salt was introduced into a polymer system with polyvinylidene fluoride (PVDF) as the matrix, along with LiTFSI, and NASICON-structured Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) was added as an inorganic filler. The resulting solid polymer electrolyte (SPE) exhibits a three-dimensional ion conduction network. LiPAAOB, with its rich carboxyl and borate ester structures, effectively stabilizes anions, increases lithium salt dissociation, and promotes the ordered migration of Li + by providing continuous lithium-affinitive functional groups, significantly improving the Li + transference number. LATP, as an inorganic filler, forms a three-dimensional spatial framework in the polymer system, offering more pathways for Li + migration. This solid polymer electrolyte achieved an ion conductivity of up to 2.34 × 10 −3 S·cm −1 , a Li + transfer number of 0.7 and an enlarged electrochemical window of 5.3 V (vs. Li + /Li), exhibiting excellent electrochemical reversibility. The assembled LiFePO₄|LiPAAOB@LATP SPE|Li full cell retained 90.2 % of its capacity after 500 cycles at 1C rate, and the Li symmetric cell operated stably for over 1800 h at a current density of 0.2 mA·cm −2 , demonstrating excellent interface compatibility and dendrite suppression capability.
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Xinze Wu,Hu Wang,Jiangchao Chen,Pengfei Pang,Haiping Li,Kunpeng Jiang,Yunyun Zhao,Wenping Liu,Guisheng Zhu,Huarui Xu
Dendrite growth and interfacial instability in conventional liquid electrolytes limit the practical application of lithium metal batteries (LMBs). Composite solid electrolytes (CSEs) offer a promising alternative, yet challenges remain in achieving high ionic conductivity and low interfacial resistance. In this study, a series of sponge-like porous Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 @PMMA/PVDF-HFP CSE membranes (LPPH1:x) were fabricated via phase separation-solution casting. A multistage ion transport channel was constructed through the synergistic combination of the polymer matrix, inorganic fillers, and liquid electrolytes. The incorporation of PMMA suppressed the crystallization of PVDF-HFP, while the ester groups in PMMA facilitated Li salt dissociation through coordination with Li + . LPPH1:3 exhibited optimal comprehensive performance: a high ionic conductivity of 2.75 × 10 −3 S·cm −1 at room temperature, a Li + transference number of 0.62, and an electrochemical stability window of 4.9 V. Moreover, the symmetric cell demonstrated stable cycling for over 2000 h at 0.2 mA·cm −2 . The LiFePO 4 full cell retained 96.4% capacity after 200 cycles at 0.5C. Post-cycling characterization confirmed that LPPH1:3 suppressed lithium dendrite growth and maintained a stable interfacial structure. This work provides an innovative material design strategy and theoretical foundation for developing high-performance solid-state LMBs.
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产品关联
DOI
高影响因子
Materials Today Nano
·
2022
·
IF 13.364
Q. Sun,X. Chen,J. Xie,C. Huang,X. Xu,J. Tu,C. Shen,Y. Jin,K. Zhang,F. Chen,T. Zhu,X. Zhao,J. Cheng
Garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) ceramics has been considered as an ideal solid-state electrolyte for Li metal cells because of its high ionic conductivity and relatively stable interface with Li. However, it is electrochemically incompatible with some high-voltage cathodes, e.g. LiCoO 2 . In this work, a nanoscale Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) fast ion conductor was coated on LiCoO 2 (only 1 wt% LATP), bringing obviously enhanced interfacial compatibility with a composite electrolyte composed of Al, Nb-codoped LLZO and polyethylene oxide (PEO). A free-standing, flexible and ultrathin (20 μm) electrolyte membrane was successfully fabricated by a facile and scalable route, even though with a high ceramics content (67 wt%). Quasi-solid-state coin and pouch-type Li cells were assembled with the LATP-coated LiCoO 2 cathode, free-standing composite electrolyte and Li anode, together with soft interface modification by in-situ polymerization. The cells show stable cycling due to combined factors of enhanced electrode/electrolyte compatibility, ultrathin nature of the electrolyte membrane and the in-situ built soft interface. The pouch cells can be cycled for 300 cycles at 0.3 C and 60 °C with 80% retention. The pouch cells can endure abuse tests of bending, cutting and nail penetration. At a practical LiCoO 2 loading of 3 mAh cm −2 , the Li|LiCoO 2 pouch cell still shows stable cycling with 90% retention after 100 cycles at 60 °C (0.2 C charge/0.5 C discharge). This work provides a practical method to fabricate high-performance solid-state Li cells.
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DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Fusheng Yin,Zhijun Zhang,Yuling Fang,Chunwen Sun
NASICON structured Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has attracted widespread attention due to its simple preparation and excellent stability towards water and air. However, there are many problems such as high interfacial resistance between electrolyte and electrodes as well as low ionic conductivity of LATP. In this paper, the effect of F doping on Li ion diffusion channel in electrolyte was investigated in detail by density functional theory (DFT) calculation. The results show that F doping can effectively reduce the formation energy of Li vacancy. Meanwhile, it can also reduce the diffusion energy barrier and induce the high-energy Li ions at 36f site to carry out synergistic diffusion via various ways at the same time. Then, the F-doped LATP electrolyte was prepared successfully. Its ionic conductivity is as high as 0.358 mS cm −1 at room temperature . At the same time, the solid-state lithium metal batteries with F-doped LATP electrolyte shows a high capacity of 136.2 mA h g −1 at 0.5C and excellent cyclability for 200 cycles. These results demonstrate that F doping may be an effective way to improve the performance of LATP electrolyte.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
·
计算材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）