ACS Applied Energy Materials
·
2024
·
IF 5.4
Yutao Liu,Jian Qin,Qing Lan,Yali Zhao,Ting Xu,Xianjiao Meng,Yifu Yang,Hui Zhan
The lithium metal anode has been regarded as one of the best anodes due to its ultrahigh specific capacity (3860 mAh·g–1), low density (0.59 g·cm–3), and low redox potential (−3.04 V vs the standard hydrogen electrode). However, its practical implementation is hindered by the low columbic efficiency (CE) and safety issues. Lithium nitrate (LiNO3) has been widely proven as an effective additive to tackle the issue, but very limited solubility in carbonate solvents makes it difficult to be introduced into current commercial electrolytes. Herein, cost-effective AlCl3 is proposed as the anion receptor to promote the dissolution of LiNO3 in carbonate electrolytes, and the underlying mechanism is investigated via Fourier transform infrared (FT-IR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. The optimized AlCl3 + LiNO3 + fluoroethylene carbonate (FEC)-containing electrolyte was used in Li|Cu and Li|LiFePO4(LFP) cells, and it induced significant improvement in cycling stability and polarization suppression. The effectiveness of the designed electrolyte was further confirmed in a practical Li|LFP cell with a thin Li anode and limited electrolyte. X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) reveal that the introduced AlCl3 and LiNO3 can help in inorganic-rich solid electrolyte interface (SEI) formation and compact Li deposition, and these benefits contribute to the enhanced cycling stability.
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 Physical Chemistry C
·
2021
·
IF 4.126
Baoguo Zhang,Li Wang,Kefeng Pan,Weimin Zhang,Yubao Liu,Yongjian Zhang,Lipeng Zhang,Zhongning Shi
Inexpensive electrolyte systems and readily available rare-earth (RE) precursors are necessary for the facile recovery of RE metals at the lowest temperature, which will allow the sustainable development of RE metal-based industries. Inspired by previous reports on Nd electrodeposition in various expensive and specialized ionic liquids (ILs), herein, we developed a practical, green, and cost-effective Nd-containing solvate IL composed of an organic solvent [(1,3-dimethyl-2-imidazolidinone)] and Nd (CF3SO3)3; the IL is well suited for Nd electrodeposition using LiNO3. The electrolyte structure and electrochemical mechanism of the IL were elucidated through physicochemical analyses and cyclic voltammetry. The role of nitrate was investigated in detail. Nd was successfully electrodeposited using the proposed method, as confirmed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction analyses. Thus, this work provides a firm theoretical basis and a practical strategy for the cost-effective bulk electrochemical extraction of RE metals at relatively low temperatures.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Cheng Liu,Yigang Ding,Jinhe Sun
Compared with single phase change materials (PCMs), organic-inorganic composite PCMs exhibits superior properties. Such as enhanced chemical stability, maintaining high energy storage density during thermal cycles. In this paper, a novel inorganic-organic composite PCM is synthesized with lithium nitrate (LNH) and acetamide (AC), which thermophysical properties are investigated systematically. The impact of α-Al 2 O 3 , β-Al 2 O 3 , expanded vermiculite, expanded graphite, boron nitride and bentonite on the energy storage density and cycle stability of composite PCM is examined intensively. The energy storage density of the composite PCM augmented with 1 wt% bentonite exhibits an increase rather than a decrease. After 100 cycles, a comparison of the data reveals that the average melting enthalpy of the PCM with bentonite (149.2 J·g −1 ) is 14.1 % higher than that without bentonite (124.2 J·g −1 ). The average enthalpy of solidification (150.8 J·g −1 ) is 21.4 % higher than that (130.7 J·g −1 ). Furthermore, the fluctuation range of the melting point and the freezing point is significantly reduced from 381.6 K–402.8 K and 313.8 K–402.2 K to 402.5 K–404.3 K and 393.8 K–403.9 K, respectively. The deviation of the melting temperature and latent heat after 100 cycles is <0.2 % in comparison to the initial value. The heat storage and release process of composite PCM in macro quantity is studied by step cooling curve test and computational fluid dynamics numerical simulation. It is confirmed that the LNH-AC/bentonite composite PCM not only has excellent long-term cycle stability, but also has no supercooling. LNH-AC/bentonite system is one of excellent candidates for solar heat storage.
研究领域:
材料科学
·
热能工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jun Wei,Zhijie Guo,Fei Wang,Xianyi Zhao,Sihan Chen,Xinyao Zhang,Xinyao Wang,Ye Liang,Xiaobing Wang
Uncontrolled side reactions between lithium metal and organic electrolytes seriously deteriorates the stability of corresponding battery due to the non-uniform Li + deposition. Using lithium nitrate (LiNO 3 ) as an additive can adjust the components in solid-electrolyte-interphase (SEI) for optimizing of lithium metal interface . However, the low solubility and rapid consumption of LiNO 3 in ester-based electrolytes limit its further application. Herein, a kind of suspension electrolyte containing micron-sized LiNO 3 particles is reported to realize a full gradient compensation against the consumption of NO 3 − . Benefiting from the uniformly dispersion of LiNO 3 particles, a SEI layer containing even-distributed Li 3 N and LiN x O y with high content is constructed that promotes the rapid and uniform plating of Li + . Consequently, the Li/Cu batteries present a polarization of only 15–20 mV, and exhibit a consistent performance for 230 cycles with the CE of 98.1%, which is 4 times than that of conventional carbonate electrolytes. In addition, the cycling life of the assembled Li/NCM811 batteries can be extended to 260 cycles with a high capacity retention of 82.4 %.
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
·
2025
·
IF 16
Jiaxian Wang,Tiansheng Bai,Yihong Liang,Lin Xie,Hongqiang Zhang,Zhen Zeng,Siyu Fang,Dandan Gao,Wanbao Wu,Zhenglin Hu,Jingyu Lu,Jiaheng Zhang,Lijie Ci,Deping Li
Lithium–oxygen batteries (LOBs), with an extremely high theoretical energy density (3500 Wh kg–1), have been regarded as potential candidates for future large-scale energy storage facilities. However, the unique semiopen system puts a hurdle on the long-lasting operation of LOBs with critical issues like the severe volatilization of the aprotic electrolyte, surface passivation or dendrite growth of the lithium metal anode, and the sluggish oxygen redox reactions. Herein, we propose a strategy to tackle the above issues with a solvation structure regulated deep eutectic electrolyte (DEE) for LOBs. With modulated content of LiNO3 as the interface stabilizer, the Li/NMA-2.0/Li symmetric cell achieves a prolonged cycling stability of over 700 h under a semiopen O2 atmosphere. It can also operate in real air, while the good high temperature conductivity of the electrolyte enables the battery to cycle for more than 100 times at 60 °C. Besides, the solvation structure of the DEE electrolyte alters the discharge/charge reaction kinetics via lowering the nucleation energy of Li2O2, achieving the formation of nanoscale discharge products and realizing a superlong cyclability of 779 cycles at a high current density of 500 mA g–1. Moreover, the underlying mechanisms are well revealed through systematically designed experiments and theoretical simulations. This work will provide guidance in designing electrolytes for alkali-metal batteries and semiopen electrochemical systems.
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 Energy Materials
·
2021
·
IF 6.024
Jingjing Zhou,Jiahang Chen,Jun Yang,Yanna Nuli,Jiulin Wang
Rechargeable Li-metal anodes have received abundant attention for high-energy-density batteries. A solid electrolyte interphase (SEI) plays a significant role in regulating the Li+ deposition/stripping process. Aimed to solve detrimental Li deposition with a dendritic and mossy morphology, herein, dendrite-free columnar Li deposition in micron size is constructed via creatively adopting a LiNO3-based electrolyte even at a high current density (2 mA cm–2) and areal capacity (4 mAh cm–2). N-rich inorganic SEI (Li3N and LiNxOy) with superior Li+ conductivity is formed on Li deposition, which enables remarkable reversibility and high average Coulombic efficiency (CE) even over 240 cycles. A Li∥LiFePO4 cell delivers excellent cycling stability over 700 cycles with a capacity fading rate of merely 0.022% per cycle. This work provides a way to regulating columnar Li deposition via N-rich SEI coordination and developing electrolyte formulations for secondary Li-metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Qiujun Wang,Yifei Wang,Nana Bai,Xiaomeng Jia,Zhaojin Li,Qujiang Sun,Ranran Li,Fei Yuan,Bo Wang
LiCoO 2 (LCO) stands as one of the dominant cathode materials in commercial lithium-ion batteries due to its high energy density and extended cycle life. However, irreversible structural phase transitions (O3 to H1–3) are triggered when the LCO is charged beyond 4.4 V, accompanied by lattice oxygen release and cobalt dissolution. These phenomena aggravate cathode electrolyte interfacial side reactions, ultimately resulting in progressive capacity decay and coulombic efficiency deterioration. Herein, capitalizing on the high solubility of LiNO 3 in sulfolane (SUL), a novel carbonate-based composite polymer electrolyte (CPE) was engineered to in-situ construct cathode electrolyte interface (CEI) layer enriched with Li 3 N, Li 2 O, Li 2 SO 4 , Li 2 SO 3 , and RSO 3 Li through LiNO 3 decomposition, effectively suppressing cobalt dissolution. Remarkably, capacity retention of 73.93 % was reached after 100 cycles under 4.6 V. This work highlights a synergistic SUL-LiNO 3 interfacial modulation strategy, offering a pioneering electrolyte design paradigm for 4.6 V-class LCO batteries.
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
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yaozong Yang,Zhao Yang,Yuesong Xu,Zhaolin Li,Nana Yao,Jie Wang,Zhenhe Feng,Ke Wang,Jingying Xie,Hailei Zhao
Recently, silicon suboxide (SiO) attracts much attention as a promising anode material for high energy density lithium-ion batteries due to its high specific capacity. However, the active particle pulverization together with repeated rupture/reconstruction of the solid electrolyte interphase (SEI) film upon lithiation/delithiation process has been a critical issue that deteriorates the electrode cycling stability and therefore impedes its deployment in commercial batteries. To address this challenge, herein, vinylene carbonate (VC) and lithium nitrate (LiNO 3 ) are employed as synergistic additives to improve the electrode-electrolyte interface property. To circumvent the low solubility in carbonate solvent, LiNO 3 is incorporated directly into the electrode while VC still into the electrolyte solution . The synergistic addition of LiNO 3 and VC enhances the electrode reaction kinetics and improves significantly the cycling stability of the SiO anode. The SiO electrode with simultaneous addition of LiNO 3 and VC delivers a high reversible capacity of 1062.3 mA h g −1 and an excellent cycling performance with 94.5% capacity retention and 99.80% Coulombic efficiency for 160 cycles, demonstrating the superior effectiveness of VC and LiNO 3 in modulating the interface chemistry and structure of SiO anode.
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 Applied Materials & Interfaces
·
2025
·
IF 8.2
Yutao Liu,Song Gao,Wei Lü,QiXian Zhang
Low-temperature environments significantly affect the performance of lithium metal batteries, primarily due to the freezing of commercial electrolytes that induced increased energy barriers for lithium-ion migration and desolvation, unstable solid electrolyte interphases (SEI), and lithium dendrite growth. In this work, an electrolyte was developed with lithium nitrate as an additive and lithium bis(trifluoromethanesulfonyl)imide and lithium hexafluorophosphate as the main lithium salts. Li+-NO3– coordination weakens Li+-solvent binding, enabling anion penetration into solvation shells. This multianion-dominated structure promotes Li+ diffusion/desolvation kinetics while enabling inorganic-rich SEI formation and homogeneous Li deposition. Consequently, Li||Li cells exhibit exceptional stability across −30 to 25 °C with over 2000 h cycle life. Li||NCM811 cells demonstrate outstanding rate capability at 25 °C, retaining 94.7% capacity at 2 C and 85.1% at 5 C over 1000 cycles. Notably, under cryogenic conditions at 0.2 C and −30 °C, the cell achieves 92.4% capacity retention after 400 cycles.
研究领域:
电化学
·
能源材料
·
锂离子电池
·
界面化学
·
低温储能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Hui Wang,Enda Ci,Xiaoqing Li,Ying Zhang,Zhenying Zhang,Jianqiang Li
A new eutectic mixture phase change material containing magnesium nitrate hexahydrate and lithium nitrate has been successfully prepared, which can be applied in the field of residential radiator heating due to the suitable phase change temperature and high latent heat. Further, by physical blending magnesium nitrate hexahydrate/lithium nitrate eutectic mixtures and expanded graphite, the new composites were prepared. The crystalline structure, thermal properties, corrosion performance of eutectic phase change materials were systematically measured. The results showed that the best eutectic mixtures had a phase change temperature of 72.35 °C and latent heat of 170.32 kJ/kg, with a little supercooling degree. The thermal conductivity was effectively improved by adding expanded graphite. Meanwhile, corrosion tests suggested aluminum and stainless steel 304 could be the preferred choices as the container. Overall, the prepared eutectic composite materials with superior performances could be a promising candidate for the residential radiator heating field.
研究领域:
材料科学
·
热能存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Han Jin,Huayun Liu,Hao Cheng,Peng Zhang,Miao Wang
Commercialization of the LMBs is subject to two formidable technical challenges, the instability of Li metal against all the organic solvents , and the short circuit caused by the dendritic lithium deposits. Lithium Bis(fluorosulfonyl)imide salt has exhibited an impressive performance for lithium-dendrite suppression and cycling efficiency improving at low current densities. Here, we use LiNO 3 as the film-forming additive for further passivation of the Li metal anodes . Following the addition of LiNO 3 , the cycling performance of the cells with 2.5 M LiFSI-0.75 M LiNO 3 /DOL as electrolyte at high currents is improved obviously. The symmetrical lithium–metal cells can be cycled for 1000 cycles with more than 1000 h at 5 mA cm −2 with a stripping/plating capacity of 2 mAh cm −2 . Moreover, the Li/Cu cell could be cycled for 400 cycles with a stable and high average Coulombic efficiency (CE) of 98.8% at 3 mA cm −2 with a capacity of 2 mAh cm −2 . Besides, the electrolyte contains an well adaptability to the electrode of LiFePO 4 and improves the cycling stability of the lithium metal. Consequently, LiNO 3 demonstrates an excellent performance as a film-forming additive in the LiFSI/DOL electrolyte for further passivation of the Li metal anodes.
研究领域:
电化学
·
能源材料
·
电池技术
·
界面化学
·
电极材料
✓ 已验证
DOI
高影响因子
Nano Research
·
2020
·Vol. 13
·期 9
·2431-2437
·
IF 8.183
Wang Zijian,Yang Kai,Song Yongli,Lin Hai,Li Ke,Cui Yanhui,Yang Luyi,Pan Feng
Lithium (Li) metal is one of the most promising anodes for next-generation energy storage systems. However, the Li dendrite formation and unstable solid-electrolyte interface (SEI) have hindered its further application. Lithium nitrate (LiNO 3 ) is extensively used as an effective electrolyte additive in ether-based electrolytes to improve the stability of lithium metal. Nevertheless, it is rarely utilized in carbonate electrolytes due to its low solubility. Here, a novel gel polymer electrolyte (GPE) consisting of poly(vinylidene fluoride) (PVDF), poly(methyl methacrylate) (PMMA), poly(ethylene oxide) (PEO) with LiNO 3 additive is proposed to solve this issue. In this GPE, polyether-based PEO serves as a matrix for dissolving LiNO 3 which can be decomposed into a fast Li-ion conductor (Li 3 N) in conventional carbonate electrolytes to enhance the stability and Li + conductivity of the SEI film. As a result, dendrite formation is effectively suppressed, and a significantly improved average Coulombic efficiency (CE) of 97.2% in Li-Cu cell is achieved. By using this novel GPE coupled with Li anode and LiNi 0.5 Mn 0.3 Co 0.2 O 2 (NMC532), excellent capacity retention of 94.1% and high average CE of over 99.2% are obtained after 200 cycles at 0.5 C. This work presents fresh insight into practical modification strategies on high-voltage Li metal batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
高分子化学
·
界面化学
·
锂电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）