Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-20
·
IF 36.3
Mu Yongbiao,Liao Zifan,Chu Youqi,Zhang Qing,Zou Lingfeng,Yang Lin,Feng Yitian,Ren Haixiang,Han Meisheng,Zeng Lin
High-voltage lithium (Li) metal batteries (LMBs) face substantial challenges, including Li dendrite growth and instability in high-voltage cathodes such as LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811), which impede their practical applications and long-term stability. To address these challenges, tris(pentafluorophenyl)borane additive as an electron acceptor is introduced into an ethyl methyl carbonate/fluoroethylene carbonate-based electrolyte. This approach effectively engineers robust dual interfaces on the Li metal anode and the NCM811 cathode, thereby mitigating dendritic growth of Li and enhancing the stability of the cathode. This additive-driven strategy enables LMBs to operate at ultra-high voltages up to 4.7 V. Consequently, Li||Cu cells achieve a coulombic efficiency of 98.96%, and Li||Li symmetric cells extend their cycle life to an impressive 4000 h. Li||NCM811 full cells maintain a high capacity retention of 87.8% after 100 cycles at 4.7 V. Additionally, Li||LNMO full cells exhibit exceptional rate capability, delivering 132.2 mAh g −1 at 10 C and retaining 95.0% capacity after 250 cycles at 1 C and 5 V. As a result, NCM811||graphite pouch cells maintain a 93.4% capacity retention after 1100 cycles at 1 C. These findings underscore the efficacy of additive engineering in addressing Li dendrite formation and instability of cathode under high voltage, thereby paving the road for durable, high-performance LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Optical Materials
·
2024
·
IF 0
Xunsheng Zhou,Binqing Zhao,Lu Yao,Wanting Gui,Longfei Chen,Chao Li,Shi Zhang,Cai Lin Wang
Eutectic scintillators with 6Li-containing thermal neutron absorbers are capable of efficient thermal neutron detection due to lamellar or rod-like optical waveguide structures formed by directional solidification. However, developing stable and bright eutectic scintillators with excellent neutron imaging capability remains a challenge. Here, the performance parameters for the scintillator have been substantially improved by the Al3+ codoping strategy in the LiF-CaF2:Eu2+ system. Due to the Al3+ codoping, the photoluminescence quantum yield (PLQY) is enhanced from 55% to 80%, the light yield is increased from 11,000 to 16,000 photons/thermal neutron, and the scintillation decay time is shortened by about 30 ns. It was shown that Al3+ codoping can effectively reduce the low-frequency shallow-energy level traps. Furthermore, large-sized (50 × 50 × 1.5 mm) translucent LiF-CaF2:Eu2+, Al3+ eutectic ceramics have been fabricated for an Anger-logic position-sensitive detector to realize two-dimensional (2D) thermal neutron detection. A codoped LiF-CaF2 eutectic scintillator provides a ∼1 mm spatial resolution and thermal neutron detection efficiency 16% higher than that of a commercial GS20 scintillator. This research paves the way for the application of large-area eutectic scintillators for efficient thermal neutron detection.
研究领域:
材料科学
·
核物理
·
光学
✓ 已验证
DOI
Advanced Energy Materials
·
2021
·Vol. 11
·期 39
·2101855
·
IF 29.368
Liang Tan,Xuexia Lan,Jinwei Chen,Hanyin Zhang,Renzong Hu,Min Zhu
Lithium-ion batteries (LIBs) suffer dramatic energy reduction, and are even unable to safely charge below -10 °C, due to sluggish Li + transport kinetics in the anode, electrolyte and solid electrolyte interphase (SEI), as well as large overpotential which causes Li plating on the anode surface. Herein, a SnO 2 -LiF-graphite (SLG) composite anode is developed for wide temperature application. The SLG with a propylene carbonate electrolyte delivers a stable capacity of more than 900 mA h g −1 at 60 °C with 100 mA g −1 , maintaining 823.9 mA h g −1 at -10 °C. When matched with a tetrahydrofuran-based electrolyte, the SLG delivers stable capacities of 780.4 mA h g −1 at -40 °C and 637.2 mA h g −1 at -50 °C, respectively. It is demonstrated that the LiF-induced inorganic-rich SEI maintains the nanostructure of the active Sn, and that their interfaces with the electrolyte are highly stable. Furthermore, the formation of α-Sn with higher Li + diffusion kinetics results in a very small overpotential (≈0.18 V) of lithiation for SLG from 30 °C to -50 °C. This work shows that LiF-modified SnO 2 anodes matched with suitable electrolytes can qualify the LIBs for a safe and long-life at wide temperature, which is helpful to further promote these batteries for low-temperature applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 36
·26775-26787
·
IF 2.779
Chen Hongzhu,Li Zhicheng,Chen Jiahao,Xia Enjie,Wu Yanmei,Zhang Hong
Lithium-ion batteries (LIBs) based on solid-state electrolytes have attracted much attention for their high safety and energy density. Li 29 Zr 9 Nb 3 O 40 (LZNO), as a new kind of Li-ion conductor, has great potential in applications of solid-state LIBs. In this work, various contents of LiF are selected to modify LZNO Li-ion conductor, and the optimal content of LiF is 5 wt% (weight%). The phase component, crystal structure, ionic conductivity, and electrochemical performance are investigated. The refinement of crystallographic information based on the bond valence site energy theory is induced to reveal the possible lithium-ion migration channel. The results show that modification with LiF enhanced the 3D migration pathways and conductivity of LZNO-based electrolytes. The 5 wt% LiF modified LZNO presents total conductivity of 0.943 × 10 −4 S cm −1 at ambient temperature and has low activation energy of conduction (0.16 eV). The cycle performance of the lithium symmetric cell characterizes the cycle of 140 h.
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 ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yiqing Yao,Hanxu Yang,Jianhui Li
The lithium metal anode is a desirable choice owing to its high theoretical specific capacity. Despite their promising potential, lithium metal batteries (LMBs) face significant challenges in practical applications, such as uncontrolled growth of lithium dendrites and an unstable interface that occurs during repeated deposition and exfoliation of the lithium anode Therefore, this study employs a simple chemical immersion method, which can not only construct a Li-Ca alloy protective layer to improve lithium-ion transport but also provide a LiF-rich interface to further enhance the mechanical strength of the protective layer. The obtained Li-Ca alloy-LiF hybrid layer shows improved performance of the lithium anode. The results indicate that the Li-Li symmetric cell composed of the treated Li can undergo stable cycling over 3000 h under various cycling conditions and also exhibit excellent cycle performance in the Li-LiFePO 4 cell.
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 Storage
·
2024
·
IF 8.9
Meiting Chen,Yunlong Jiang,Hengfeng Hong,Xin Chen,Hongrui Cheng,Yuanhui Zheng
The uncontrolled growth of dendritic lithium on the lithium surface negatively impacts the lifespan of lithium metal batteries due to the instability of the solid electrolyte interphase (SEI). This paper introduces the concept of incorporating lithium-fluoride (LiF) salt into lithium metal to promote the formation of a LiF-rich interphase through a dissolution and re-deposition process, resulting in longer cycling lithium metal batteries. Solid salt, LiF, is integrated into the entire bulk phase of lithium metal using a simple and cost-effective mechanical rolling method. The surface LiF particles on the lithium metal prevent direct reaction of the electrolyte with the lithium metal underneath. Additionally, they can slowly dissolve into the electrolyte and redeposit onto uncovered areas of the lithium metal during the in-situ SEI formation process. When the in-situ formed SEI ruptures during the cycling process, the lithium metal are exposed to the electrolyte, providing LiF species for SEI healing at the crack region. The symmetrical cell with the designed LiF-rich electrode exhibits stable polarization voltage over 1000 h of cycle time (1 mA cm −2 /1 mAh cm −2 ). Stable charging and discharging cycles over 550 times are also achieved for full cells consisting of the prepared anode and LiFePO 4 cathode at 1C.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2025
·Vol. 19
·期 5
·1-11
·
IF 4.5
Li Guojie,Liang Xuan,Zhang Junlong,Guo Bin,Mao Baoguang,Sun Hongming,Wang Aoxuan,Deng Qibo,Liu Chuntai
Lithium metal anode represents the ultimate solution for next-generation high-energy-density batteries but is plagued from commercialization by side reactions, substantial volume fluctuation, and the notorious growth of lithium dendrites. These hazardous issues are further aggravated under real-world conditions. In this study, a stable Al-Li/LiF artificial interphase with rapid ion transport pathways is created through a one-step chemical pretreatment process, effectively addressing these challenges simultaneously. As a consequence, the composite interfacial layer exhibits exceptional ionic conductivity, mechanical strength, and electrolyte wettability, ensuring swift Li + transfer diffusion while suppressing lithium dendrite growth. Remarkably, the Al-Li/LiF symmetric cell provides a cycle life exceeding 2300 h with a low polarization at 0.5 mA·cm −2 . Furthermore, its enhanced cycling stability and capacity retention as well as capacity utilization stability pairing with LiFePO 4 and LiNi 0.8 Co 0.1 Mn 0.1 O 2 cathodes, highlighting the proposed approach as a promising solution for practical Li metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 18
·13278-13282
·
IF 2.019
Mao Y. X.,Pan H. L.,Zhang Y. W.,Liu Q. Q.,Wu H. T.
Li 2 Mg 3 SnO 6 (abbreviation for LMS) ceramics doped with 1–4 wt% lithium fluoride (LiF) were prepared by the conventional solid-state reaction method. The effects of LiF addition on the phase compositions, sintering behaviors and microwave dielectric properties of LMS ceramics were investigated. A small amount of LiF addition could effectively decrease the sintering temperatures due to the liquid phase in the sintering process and induced no apparent degradation of the microwave dielectric properties. The optimized quality factor values for each composition firstly increased and then decreased with the increase of the LiF content. Whereas, the optimized dielectric permittivity increased with increasing of the LiF content. Distinguished microwave dielectric properties with a dielectric constant ( ε
r ) of 11.13, a quality factor ( Q · f ) of 104,750 GHz, and a temperature coefficient of resonant frequency (τ
f
) of −10.83 ppm/°C were obtained for LMS ceramics sintered at 950 °C doped with 3 wt% LiF, which showed that the materials were suitable for the low temperature co-fired ceramics applications (LTCC).
研究领域:
材料科学
·
电子材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Kuo Li,Wenbin Luo,Tu Ran,Shuhao Ruan,Yi Cheng,Haisong Wang
It is believed that slow Li + desolvation on the surface and sluggish Li + transfer in the bulk is responsible for the relatively poor high-rate and low-temperature performance of graphite anode. In this work, we design carbon composites with LiF-rich solid electrolyte interface (SEI) by one-step process using the sodium lignosulfonate (LS) as the bifunctional agents. The polar functional groups on LS could promote the formation of SEI rich in LiF, which can facilitate Li + desolvation and reduce the energy barrier for Li + transfer. Meanwhile, the S elements in LS can be dopped into the carbon, which could regulate the interlamellar structure of carbon, furth promoting the Li + transfer in the bulk of carbon composites. As a result, the designed carbon anode exhibits impressive specific capacity of 1047 mAh g −1 under 100 mA g −1 at the room temperature. Even at low temperatures, it still displays 437 mAh g −1 at 0 °C and 300 mAh g −1 at −10 °C under 100 mA g −1 , which is far better than the graphite anode. This work puts forward an effective and green strategy to design the carbon anode with LiF-rich SEI and rapid Li + transfer for LIBs with high capacity and excellent wide-temperature performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yaozong Yang,Jie Wang,Zhaolin Li,Zhao Yang,Bo Wang,Hailei Zhao
Constructing a robust solid electrolyte interphase (SEI) is extremely critical to developing high-energy-density silicon (Si)-based lithium-ion batteries. However, it is still elusive how to accurately manipulate the chemical composition and structure of the SEI layer. Herein, a LiF-dominated SEI film intertwined by a highly elastic polymer is achieved by regulating the defluorination mechanism of the fluorinated carbonate additive on the Si electrode surface. The experimental and computational results confirm that the decomposition route of trans-difluoroethylene carbonate (DFEC) molecules can be significantly altered in the presence of lithium difluoro(oxalato)borate (LiDFOB) additive. The induction of direct defluorination of DFEC step by LiDFOB, as opposed to the breaking of C–O bonds without LiDFOB addition, is crucial in ensuring the exclusive formation of LiF-dominated SEI and maintaining the cyclic structure of DFEC. The defluorinated DFEC easily polymerizes to form poly(vinylene carbonate), enhancing the elasticity of the SEI. The resulting LiF-dominated SEI film with a polymer interwoven outer layer shows enhanced ionic conductivity and mechanical stability, which can effectively accelerate electrode reaction kinetics and maintain the structural stability of the Si electrode. As a result, the Si electrode with the electrolyte containing the designed dual-additive exhibits superior cycling stability and excellent rate performance, delivering a high reversible capacity of 1487.3 mAh g–1 after 1000 cycles at 2 A g–1.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Chemical Science
·
2022
·Vol. 13
·期 42
·12367-12373
·
IF 9.969
Siyuan Wang,Hao Fu,Jiamin Ma,Xiaomeng Shi,Huimin Wang,Zongyou Yin,Shuai Zhang,Mengdie Jin,Ziyun Zhong,Xinyun Zhai,Yaping Du
CoF2, with a relatively high theoretical capacity (553 mA h g−1), has been attracting increasing attention in the energy storage field. However, a facile and controllable synthesis of monodispersed CoF2 and CoF2-based nano-heterostructures have been rarely reported. In this direction, an eco-friendly and precisely controlled colloidal synthesis strategy to grow uniformly sized CoF2 nanorods and LiF-tipped CoF2-nanorod heterostructures based on a seeded-growth method is established. The unveiled selective growth of LiF nanoparticles onto the two end tips of the CoF2 nanorods is associated with the higher energy of tips, which favors the nucleation of LiF nanocrystals. Notably, it was found that LiF could protect CoF2 from corrosion even after 9 months of aging. In addition, the as-obtained heterostructures were employed in supercapacitors and lithium sulfur batteries as cathode materials. The heterostructures consistently exhibited higher specific capacities than the corresponding two single components in both types of energy storage devices, making it a potential electrode material for energy storage applications.
研究领域:
材料科学
·
能量存储
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2021
·Vol. 52
·期 5
·3490-3496
·
IF 2.47
Yan Hengwei,Huang Liqiang,Ma Wenhui,Liu Zhanwei,Qin Bo
The NaF-KF-AlF 3 -based electrolyte is a promising low-temperature electrolyte for aluminum reduction. The solubility and dissolution rate of alumina in NaF-KF-AlF 3 -LiF-CaF 2 melt with a cryolite ratio (CR) ranging from 1.5 to 1.8 were investigated by the rotating corundum disk method at 1073 K to 1153 K. The effect of the composition and temperature of the melt on the solubility and dissolution rate of alumina were discussed. The results show that the solubility and dissolution rate of alumina in the melt decrease with the increase of LiF and CaF 2 content, and the effect of LiF on the alumina solubility is greater than that of CaF 2 . The decrease of the CR and temperature lead to a marked reduction of the alumina solubility and alumina dissolution rate. The dissolution rate of alumina depends on the dissolution rate in the first 5 minutes. The alumina dissolution is a zero-order reaction in the first 5 minutes, and a first-order reaction in the next 30 minutes.
研究领域:
材料科学
·
冶金工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）