Energy Advances
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2022
·Vol. 1
·期 12
·1028-1034
·
IF 0
Lei He,Jian-Hua Cao,Ya-Kun Wang,Da-Yong Wu
Increasing the proportion of inorganic electrolytes in organic–inorganic composite electrolytes can significantly improve the ionic conductivity of composite electrolytes. However, this method is confronted with some problems, such as the uneven dispersion of inorganic electrolytes and the aggregation of nanoparticles, which results in a worse performance of the electrolytes’ interface. In this study, we had the dopamine hydrochloride molecules self-polymerized on the surface of inorganic ionic conductor lithium titanium aluminum phosphate (LATP) particles to obtain PDA-coated LATP nanoparticles. Then, the coated LATP particles were composited with PEO at a ratio of 80 : 20, with the LATP's evenly dispersed in the PEO, and no aggregation happened. On adding a small amount of electrolyte (5 μL cm−2, 1 M Li TFSI), the ionic conductivity of the electrospun PI-loaded PEO0.2–PDA@LATP0.8 flexible composite solid electrolyte reached 2.07 × 10−4 at 30 °C and 2.05 × 10−3 S cm−1 at 80 °C. NCM811‖Li batteries assembled with this electrolyte had an initial discharge capacity of 178.0 mA h g−1 at 30 °C, and still remained at 172.1 mA h g−1 (96.7%) after 200 cycles. The research shows that there are three main conduction pathways of Li+ in this electrolyte: through the segments of the polymer chains, through the interface between the polymer and inorganic ionic conductor, and through the passage composed of a continuous inorganic ionic conductor. Further results show that the coating of LATP by PDA does not block the transmission of Li+ both inside the crystal and at the crystal interface of LATP.
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
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhen Li,Kailin Luo,Geng Zhang,Lingxuan Qian,Xiaodong Huang
Li metal is promising as the anode for next-generation Li-ion batteries; however, uncontrollable dendrite growth and severe side reactions between the Li metal and electrolyte greatly restrict its commercialization. Here, a 3D porous protective layer constructed by core@shell-Cu@Li 3 N particles is developed to solve the above issues. This protective layer is easily prepared just by one-step dip coating in Cu(NO 3 ) 2 /N-methyl-2-pyrrolidone (NMP) solution. Due to rapid Li + transport and good wettability of the protective layer, it effectively modulates Li + flux and thus homogenizes Li deposition. More importantly, as confirmed by both the experimental results and phase-field simulations, the 3D porous protective layer enforces the Li dendrite to laterally grow to form an interconnected network, which causes that the subsequent Li deposition is constrained and filled in the inner space rather than savage growth. Therefore, both the symmetric battery and full cell constructed by the protected Li electrode displays much longer lifespan than the one with bare Li even in unstable liquid carbonate electrolyte. Also, this protective layer is demonstrated to be compatible with Li 1+x Al x Ti 2−x (PO 4 ) 3 (LATP) solid-state electrolyte by suppressing the side reactions. This work paves a new and facile strategy for developing high-performance Li metal anode.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jie Zhou,Keying Cai,Tianci Zhou,Xiangfei Li,Yawen Li,Can Zhang,Zhuoyuan Zheng,Yusong Zhu
Li-dendrite growth and polysulfides shuttle are two core problems that restrict the applications of lithium-sulfur batteries (LSBs). Here, a double-layer-modified gel separator (DMS) is proposed to enable a shuttle-inhibition and dendrite-free quasi-solid-state LSB, where the polypropylene separator is sandwiched between an ultra-thin VS 2 layer (3 um) and a ceramic/polymer layer (6 um). On the cathode side, VS 2 layer can inhibit the polysulfides shuttle and boost their conversion kinetics. Meanwhile, on the anode side, the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP)/PMMA/PVDF gel polymer electrolyte with the high-elastic-modulus and the homogenized Li-ion flux could effectively avoid dendrite growth. Last but not least, the quasi-solid-state LSB effectively prevents the evaporation of flammable ether-based electrolyte. Consequently, the quasi-solid-state-LSBs assembled with DMS show a high-capacity of 1197 mA h g −1 at 0.2 C and ultra-stable cycling performance over 800 cycles at 2 C with the decay rate of just 0.032% per cycle. Even with the high-sulfur-loading of 2.5 mg cm −2 , the LSB still delivers the high-capacity of 640.5 mA h g −1 at 2 C with stable cycling over 500 cycles. What's more, the assembled pouch cells still function properly even on the nail penetration and folding test, verifying the gel layer's integrity, and retention of electrochemical function under realistic conditions.
研究领域:
储能
·
材料科学
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电化学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Jiechen Song,Yuxing Xu,Yuncheng Zhou,Rui He,Ai-Jia Wei,Qiangqiang Tan
Solid-state lithium metal batteries with poly(ethylene glycol) acrylates (PEGAs) solid electrolytes are considered as one of the promising candidates for next generation power sources. Constructing composite solid electrolytes (CSEs) by adding Li1.3Al0.3Ti1.7(PO4)3 (LATP) particles into PEGAs matrix is a fantastic way to improve the overall electrochemical properties. However, the inorganic LATP particles tend to agglomerate together in the organic PEGAs matrix. Designing LATP into 3D porous oxide electrolyte framework can address the agglomeration issue effectively, but the preparation of the LATP framework is always complicated to operate and difficult to reproduce on a large scale. In this work, a scalable CSE with PEGAs matrix and LATP framework is directly prepared on cathode by integrating with polyvinylidene difluoride (PVDF) and organic solvent, which is friendly to operate and matches the production of the mainstream LIBs. The designed CSE generates a fantastic conductivity of 0.22 mS cm-1 and Li+ transference number (tLi+ = 0.60) at room temperature. The Li/Li symmetric cell with the designed CSE can cycle steadily for 1645 h at 0.1 mA cm-2 and room temperature. Li/LiFePO4 full cells are assembled to assess battery performance, which delivers excellent stable discharge capacity (146.7 mAh g-1 at 0.5 C) and cycling stability with a capacity retention of 96.9% at 0.5 C after 300 cycles at room temperature. The work addresses the issue of hard reproduction of 3D porous oxide electrolyte framework and provides a CSE with 3D porous LATP framework having a high development potential and its feasible scale-up preparation method.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Yuhang Li,Min Liu,Shanshan Duan,Zixian Liu,Shuen Hou,Xiaocong Tian,Guozhong Cao,Hongyun Jin
All-solid-state lithium batteries are promising to overcome the safety issues and limited energy density concern of commercial Li-ion batteries (LIBs). In this study, cubic-phase Li1.4Al0.4Ti1.6(PO4)3 (LATP) powders are prepared and filled into biodegradable polycaprolactone (PCL) matrixes to form a flexible PCL–LiClO4–LATP hybrid solid electrolytes (HSEs). Owing to the excellent electrochemical stability of the PCL matrix, the HSEs offer a wide electrochemical potential window of 5 V (vs Li/Li+), an ionic conductivity of 3.64 × 10–5 S cm–1 at 55 °C, and a high Li-ion transference number of 0.58. In addition, the fabricated all-solid-state lithium batteries exhibit an outstanding electrochemical performance with a high initial discharge specific capacity of 136.6 mAh g–1 and a good capacity retention of 75% after 200 cycles at 0.3 C. The superior performance indicates that the HSEs with the PCL as the polymer matrix provide an inspiring approach to develop high-performance flexible and safe all-solid-state lithium 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 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.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhengpeng Song,Haotong Li,Fei Zheng,Husitu Lin,Jing Liu,Wei Liu,Guohua Sun,Xia Tao
Ceramic Li1.3Al0.3Ti1.7(PO4)3 (LATP) with high ionic conductivity and stability in ambient atmosphere is considered to be potent as a solid-state electrolyte of solid-state lithium metal batteries (SSLMBs), but its huge interfacial impedance with electrodes and the unwanted Ti4+-mediated reduction reaction caused by the lithium (Li) metal anode greatly limit its application in LMBs. Herein, a composite polymer electrolyte (CPET) was integrated by in situ gelation of dual-permeable 1, 3-dioxolane (DOL) in the tandem framework composed of the commercial cellulose membrane TF4030 and a porous three-dimensional (3D) skeleton-structured LATP. The in situ gelled DOL anchored in the tandem framework ensured nice interfacial contact between the as-prepared CPET and electrodes. The introduction of the porous 3D LATP endowed CPET the increased lithium-ion migration number (tLi+) of 0.70, a wide electrochemical stability window (ESW) of 4.86 V, and a high ionic conductivity of 1.16 × 10–4 S cm–1 at room temperature (RT). Meanwhile, the side reaction of the LATP/Li metal was adequately restrained by inserting TF4030 between the porous LATP and Li anode. Profiting from the superb interfacial stability and the enhanced ionic transport capacity of CPET, Li/Li batteries based on the optimal CPET (CPET2) cycled over 2000 h at 20∼30 °C smoothly. Moreover, solid-state LiFePO4 (LFP)/Li with CPET2 exhibited excellent electrochemical performance with a capacity retention ratio of 72.2% after 400 cycles at 0.5C. This work offers an integrated strategy to guide the fabrication of a highly conductive solid electrolyte and a stable interface design for high-performance SSLMBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Zehua Cai,Rengui Xiao,Bo Jiang
Sodium superionic conductor (NASICON)-type conducting ceramic Li 1+x Al x Ti 2−x (PO 4 ) 3 (LATP) has been regarded as one of the most promising candidates for high-safety and high-energy density solid-state Li metal batteries (SSLMBs) because of its high ionic conductivity and good chemical stability. However, the large interfacial impedance and instability between the solid electrode and LATP electrolyte severely hinder its practical application in solid-state batteries. To overcome this technical challenge, we demonstrate a polymer–ceramic–polymer composite electrolytes (PCPCEs) prepared through drop casting, which ameliorates the interfacial stability between the solid electrolyte and the electrode. PCPCEs with an ideal ambient-temperature ionic conductivity can drastically reduce the interfacial resistance between the LATP and solid electrodes and effectively avoid a direct reaction and contact between them. As a result, the interfacial impedance decreases from 30,000 to 280 Ω for the Li–LATP interfaces and from 40,000 to 800 Ω for the LATP–LiFePO 4 (LFP) interfaces. Meanwhile, the polarization voltage of the Li||PCPCEs||Li symmetric cell reduces from 1.5 V to 100 mV. The solid-state Li metal batteries assembled with a Li metal anode , LFP cathode, and PCPCEs exhibit a desired initial discharge capacity of 152.5 mAh g −1 and a good cycling performance at 0.1 C for 25 °C. This study provides a prospective insight to improve the poor interface between the solid electrode and inorganic conducting ceramic.
研究领域:
材料科学
·
电化学
·
电池技术
·
固态电解质
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Zhaoxin Lu,Zhenlian Chen,Muqin Wang,Yi Wan,Jingkun Yan,Shuaishuai Chen,Yan Shen,Zhao Yan,Deyu Wang
Lithium aluminum titanium phosphate, abbreviated as LATP, is an important Li+ solid-state electrolyte thanks to its high ionic conductivity and good stability in the ambient atmosphere. Extensive efforts have been devoted to understanding its advanced electrochemical properties. However, the strategy to use it in practical cell is rarely available. In this work, we demonstrate LATP’s working behavior via LATP that is coated on a separator facing the cathode and anode, respectively, in both graphite|LiNi0.8Co0.1Mn0.1O2 and Li|LiNi0.8Co0.1Mn0.1O2 cells. With the LATP contact with LiNi0.8Co0.1Mn0.1O2, the cells deliver slightly lower reversible capacity owing to a large Li+ diffusion impedance originated from the space charge layer formed between LATP and cathode and show better durability due to the synergetic Li+ transportation via LATP and organic electrolyte. As for LATP facing graphite, the cells deliver a higher discharge capacity and better cyclic stability. It is ascribed to the buffering and protecting effect of the solid electrolyte interphase (SEI) that reduces the interfacial impedance and precludes the interfacial reaction between LATP and lithiated graphite. When directly in contact with lithium, LATP is decomposed quickly and the cells’ performance varies with the recipe of organic electrolytes. This work clearly indicated that LATP could improve the cells’ performance when appropriate technologies are utilized to address the associated challenges.
研究领域:
材料科学
·
电化学
·
电池技术
·
固态电解质
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Xiaoyu Zhang,Jinhuan Wang,Dongqi Hu,Wei Du,Chuanxin Hou,Huiyu Jiang,Yuting Wei,Xiao Liu,Fuyi Jiang,Jianchao Sun,Hua Yuan,Xiaoyu Huang
The large scale application of solid state lithium metal batteries based on NASICON-type Li 1+x Al x Ti 2-x (PO 4 ) 3 (LATP) electrolyte has been hindered by insufficient ion conductivity and interface instability due to the spontaneous Ti 4+ reduction reaction between Li metal and LATP. To address these issues, Li 1.7 Al 0.3-x Bi x Ti 1.7 (PO 4 ) 3 (0 ≤ x ≤ 0.03) (LABTP) electrolytes were prepared, and the influence of Bi substitution on the microstructure and conductivity of LATP were investigated. Suitable amount of Bi substitution accelerates densification and improves the ionic conductivity . Furthermore, unlike commonly used polyethylene oxide (PEO) and polyvinylidene difluoride (PVDF), polyvinylbutyral (PVB)-based quasi-solid electrolytes with LABTP is first-time proposed to improve the compatibility and stability of the LATP/Li interface. The synergistic effect of Bi doping and PVB reduces the reduction reaction of Ti 4+ . Small voltage hysteresis is observed in the corresponding Li||Li symmetric cells. The solid-state Li|LABTP@PVB|LiFePO 4 full cell can deliver a high capacity of 146.2 mAh g −1 and a stable cycling performance without reduction after 200 cycles.
研究领域:
材料科学
·
电化学
·
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）