ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 51
·2306868
·
IF 19
Zhipeng Jiang,Tao Yang,Chen Li,Jiahang Zou,Hanxu Yang,Qingan Zhang,Yongtao Li
Ether-based electrolytes have high ionic conductivity and good stability toward the lithium metal anode relative to carbonate-based electrolytes, but they typically exhibit poor oxidation stability (<4 V vs Li + /Li). Most approaches aimed at enhancing the oxidative stability of ether-based electrolytes, such as “salt-in-solvent” and “weakly solvating” strategies, often sacrifice their inherent advantage of high ionic conductivity. Herein, this article proposes a cost-effective synergistic additive strategy by co-adding LiNO 3 and vinylene carbonate (VC) to achieve an optimized ether-based electrolyte (OEE) that simultaneously offers high Li-ion (Li + ) conductivity (11.52 mS cm −1 at 20 °C) and high-voltage stability (4.4 V). LiNO 3 and VC can enter the inner solvation shell of the electrolyte, preferentially participating in the film-forming progress at the electrode surface, leading to the formation of a unique organic–inorganic bilayer interfacial protective layer. This layer could effectively suppress electrolyte side reactions and enhance electrode stability. As a result, the 4.4 V Li-LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811) full cells assembled with the OEE exhibit stable cycling performance at both room temperature and low temperature. This work provides a new approach to the design of ether-based electrolytes for high-voltage lithium 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
HYDROMETALLURGY
·
2024
·
IF 4.8
Ming Tian,Zhanpeng Yan,Minghui Liu,Tianyan Xue,Ying Yu,Hui Zhang,Tao Qi
Hydrometallurgical unit operations are typically used to recover palladium (Pd) from its ores and secondary resources with high selectivity owing to their low energy consumption, cost effectiveness, and volume flexibility. Herein, diluted HNO 3 solutions with added nitrate salts were used to dissolve Pd powders. Moreover, solutions of nitrates with same valency cations (such as HNO 3 , LiNO 3 , NaNO 3 , KNO 3 , CsNO 3 , and NH 4 NO 3 ) and same period cations (such as NaNO 3 , Mg(NO 3 ) 2 , and Al(NO 3 ) 3 ) were used to reveal the involved beneficial effects of the nitrates on the Pd dissolution in an environment friendly way with low acidity of the solutions. Among all added alkali metal nitrates, LiNO 3 resulted in the highest Pd dissolution efficiency, which was attributed to the higher dissociation constant of LiNO 3 , resulting in a higher concentration of free nitrate and hence a higher oxidation potential of the overall system. The dissolution process was systematically investigated to determine the optimal temperature (353 K), LiNO 3 and HNO 3 concentrations (6 and 1 mol L −1 , respectively), stirring speed (500 rpm), and reaction time (5 h). These optimal conditions yielded a dissolution efficiency of 99.6%. Notably, as the reaction proceeded, the Pd powder surfaces corroded to form numerous holes, indicating that internal diffusion control also affected Pd dissolution.
研究领域:
冶金学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2026
·
IF 17.3
Liu Yang,Lu Chen,Chunlei Song,Yanxin Jiang,Hongji Pan,Anjun Hu,Jianping Long,Junjie Chen,Wenjia Li,Zhiyuan Liu,Bohao Ma,Weihong Li,Yiju Li
The practical deployment of lithium-metal batteries (LMBs) with Ni-rich cathodes is limited by unstable electrode-electrolyte interfaces. Although LiNO3 is widely recognized as an effective additive for stabilizing these interfaces, its extremely low solubility in carbonate electrolytes (∼0.01 mg mL–1) severely limits practical use. Here, we introduce dehydrated sepiolite as a structurally simple, cost-effective, and multifunctional LiNO3 solubilizer for constructing robust electrode-electrolyte interfaces. Sepiolite, with its abundant polar oxygen sites and unique open nanochannels, weakens Li+–NO3– interactions, thereby increasing LiNO3 solubility to 13.0 mg mL–1 (over 1000-fold), while simultaneously scavenging H2O, HF, and transition-metal ions to mitigate parasitic reactions. These synergistic effects regulate interfacial chemistry and promote the formation of a Li3N-Li2O-LiF-rich interphase with high ionic conductivity, stabilizing the LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode and enabling uniform lithium deposition. As a result, carbonate electrolytes incorporating the sepiolite-LiNO3 solubilizer (BE-Sep@NO3–) deliver a Coulombic efficiency of 99.0% in Li//Cu cells and stable cycling over 1200 h in Li//Li symmetric cells. Moreover, Li//NCM811 full cells retain 84.6% and 79.5% of their capacity at 0.5 C and 5 C after 400 cycles, respectively, while pouch cells with 50 μm lithium anodes achieve 82.5% capacity retention after 120 cycles with a high energy density of 375.1 Whkg–1. This work demonstrates that natural dehydrated sepiolite offers an environmentally friendly and scalable pathway to unlock the full potential of LiNO3 for enabling stable, high-energy LMBs.
✓ 已验证
DOI
PubMed
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
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
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2024
·
IF 4.7
Xiao-qing LU,Ai-min LIU,Feng-guo LIU,Xian-wei HU,Zhong-ning SHI
The feasibility and reaction mechanism of NdFeB film electrodeposition in 1,3-dimethyl-2-imidazolidinone (DMI)−LiNO 3 ionic liquid analogs at room temperature were investigated. Cyclic voltammetry indicated that the reduction peak at −1.83 V (vs Ag) was related to the reduction of Fe(II) to Fe, while the reduction peak at −2.01 V (vs Ag) was related to the reduction of B(III) to B. The electrochemical reduction reaction of Fe(II) and B(III) were irreversible processes controlled by diffusion, and the diffusion coefficients of Fe(II) and B(III) at 313 K were 3.03×10 −6 and 6.74×10 −7 cm 2 /s, respectively. In addition, XRD analysis suggested that the product obtained by the electrodeposition in DMI−LiNO 3 −Nd(CF 3 SO 3 ) 3 −FeCl 2 −H 3 BO 3 ionic liquid analogs for 2 h on the Al substrate contained NdFe 3 B 3 . SEM and EDS analysis showed that Nd, Fe, and B in the cathode product were uniformly distributed. XPS analysis revealed that the mass fractions of Nd, Fe, and B on the W substrate were 27.44%, 27.90%, and 7.51%, respectively.
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 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
Journal of Energy Storage
·
2024
·
IF 8.9
Songping Mo,Bo Xiao,Jiaxuan Li,Lisi Jia,Ying Chen
The use of molten salts as phase change materials (PCMs) for medium temperature thermal energy storage is common. However, these materials are associated with limitations, including leakage during the phase change process , low thermal conductivity , and low moisture resistance for specific types of molten salts such as LiNO 3 /NaCl. This research focuses on the preparation and properties of LiNO 3 /NaCl nanoencapsulated phase change materials (NEPCM). Through detailed analysis using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), we confirmed the successful encapsulation of the PCM and the presence of spherical nanocapsules . Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) results indicated that the encapsulation process did not alter the crystal structure of the PCM. Differential scanning calorimetry (DSC) revealed that the NEPCM exhibited a phase change temperature of 222.4 °C and a latent heat of fusion of 228.7 kJ/kg. Furthermore, the NEPCM demonstrated a high thermal reliability of 99.7 % after fifty thermal cycles, indicating excellent cyclic stability. Moisture resistance experiments were carried out by subjecting both the PCM and NEPCM to a humid environment . The results showed that encapsulation effectively reduced water absorption in the PCM. Thermal conductivity measurements of the nanocapsule suspension were conducted using the Hot Disk method, which indicated an approximate 16.3 % increase in thermal conductivity compared to the base fluid. Additionally, the addition of 2 % MgO to the nanocapsule suspension further enhanced the thermal conductivity by 31.7 %, while maintaining the dispersion stability of the suspension. These enhancements in properties are advantageous for the practical application of the NEPCM as a PCM for thermal energy storage. The overall results demonstrate that nanoencapsulation offers significant improvements in the thermal reliability, moisture resistance, and thermal conductivity of molten salt PCMs, thus broadening their potential applications in medium temperature thermal energy storage systems .
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2020
·
IF 5.647
Shuo Li,Jia Liu,Tianwei Tan,Jiapei Nie,Huili Zhang
To reduce the emission of greenhouse gases, the substitution of fossil fuel by renewable energy sources is increasingly important. Matching energy supply and demand is however required, even more so if intermittent renewable energy sources are employed. Thermal energy storage then offers significant advantages. Thermo-chemical energy storage systems, using reversible reactions, have a high reaction enthalpy that exceeds the storage capacities of sensible and latent heat modes. Magnesium hydroxide is a candidate TCES material for such a system at temperature around 300 °C, and adaptable when doping Mg(OH) 2 with metal salts. Both pure Mg(OH) 2 and its composites with 1, 3, 6 and 10 wt% LiNO 3 are studied. The present work validates this TCES process and develops reaction rate equations needed for its design. The LiNO 3- doping significantly reduces the onset temperature of dehydration. For pure Mg(OH) 2 , the temperature is 325 °C. It is reduced to 289 °C when 1 wt% LiNO 3 is present, and further reduced to 269 °C at a dosage of 10 wt% LiNO 3 . Whereas the dehydration of pure Mg(OH) 2 is slow, with a rate constant k of 1.72 10 −5 s −1 at 300 °C, adding increasing amounts of LiNO 3 progressively increases the reaction rate constant to ~10 −2 s −1 at 300 °C when 10 wt% LiNO 3 is present. The kinetic expressions enable to predict the conversion yield and amount of heat stored or released for any desired temperature and selected duration of the heat-induced dehydration. LiNO 3- doped Mg(OH) 2 have a high potential in TCES applications when the heat source is available at temperatures between 250 and 400 °C, since the equilibrium temperature and the extent of de-hydration Mg(OH) 2 can be tuned to the required temperature range by adding different wt% of LiNO 3 .
研究领域:
能源科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Jing Gao,Baoguo Zhang,Fu-an Guo,Yubao Liu,Jianying Zhao,Zhongning Shi,Xiangfa Liu
Developing efficient, green, and cost-effective methods for extracting rare earth (RE) metals is essential to accelerate breakthroughs in critical technologies in the field of RE-based functional materials. In this study, a low-cost aprotic polar molecular liquid, N,N-Dimethylformamide (DMF), was used for electrowinning metallic Sm with upstream SmCl 3 as the raw material, inspired by previous applications of diverse specialised ionic liquids for the electrochemical recovery of RE metals. Cyclic voltammetry and electrodeposition experiments demonstrated that metallic Sm cannot be obtained from the binary DMF-SmCl 3 system, but can be electrodeposited with LiNO 3 . Therefore, the mechanism underlying the observed electrochemical behaviour is elucidated and discussed in detail. Sm and Sm–Co metallic elements were successfully electrodeposited on an Al substrate at a relatively high current density, characterised, and evaluated using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. Moreover, a unique two-step method involving electrodeposition and direct smelting is prospectively described for the continuous preparation of bulk RE-containing alloys to stabilise highly active RE elements. Therefore, this study provides valuable insights into practical solvometallurgical processes for RE metal extraction, refinement, and recycling.
研究领域:
冶金学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 18
·4611
·
IF 3.1
Chuang Zhu,Minhao Xu,Baiyuan Tian,Manting Gu,Li Gong
The aim of this study is to further enhance the thermal storage and heat transfer performances of a low-melting-point quinary salt. The eutectic salt was prepared using LiNO3, NaNO3, KNO3, NaNO2, and KNO2as raw materials, followed by the doping of nano-SiO2and nano-MgO into the base salt using a microwave-assisted method. The thermal properties of the samples were analyzed using a Synchronous Thermal Analyzer and a Laser Flash Apparatus. The co-doping of two types of nanoparticles was found to significantly enhance the specific heat capacity of the base salt. The maximum specific heat reached 2.36 J/(g·K), showing a 50.4% increase compared to the base salt. The thermal conductivity of molten salts can be affected by nanoparticles. An observed sample demonstrated a thermal diffusivity of 0.286 mm2/s, indicating a 19.2% improvement over the base salt, which may be attributed to enhanced phonon thermal efficiency. In addition, this study revealed that while interfacial thermal resistance can enhance specific heat capacity, it can also lead to a decrease in the thermal conductivity efficiency of materials. This work can offer insights and references for the enhancement of molten salt properties.
研究领域:
材料科学
·
热能工程
✓ 已验证
DOI
PubMed
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
危险品化学品经营许可证（带存储）