DESALINATION
·
2024
·
IF 8.3
Xi Gao,Yan Wang,Xiaomeng Liu,Rongzi Zhang,Haidong Sun,Panpan Yin,Yongxing Huo,Rongping Yun,Xu Xiang
The development of granular adsorbents with high adsorption capability and high cycle stability is of great significance for the application in efficiently extracting lithium from salt lake brine. Herein, the structure of granular aluminum-based adsorbents was regulated by adding water-soluble polymer PEG. The results showed that the molecular weight of PEG was closely related to the pore structure and surface hydrophilicity of the granular adsorbents. With the decrease of the molecular weight of PEG, the specific surface area, the average surface pore size, and the hydrophilicity of granular adsorbents increase. The optimized adsorbent PSF-PEG600@AD formed a complex pore structure with surface macropores and internal mesopores as well as excellent hydrophilicity. The mechanical strength and wear resistance are enhanced. This unique porous structure and surface hydrophilicity enable PSF-PEG600@AD rapid adsorption equilibrium in the old brine of Qarhan salt lake with a Mg/Li ratio of 323 within 4 h. The adsorption capacity remains as high as 99.02 % after 10 static adsorption-desorption cycles, showing excellent cyclic stability. This study guides a direction in preparing high-performance granular adsorbents with adjustable pore structure and surface properties.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 13
·1706513
·
IF 13.325
Xuyan Ni,Tao Qian,Xuejun Liu,Na Xu,Jie Liu,Chenglin Yan
The “shuttle effect” that stems from the dissolution of polysulfides is the most fatal issue affecting the cycle life of lithium-sulfur (Li–S) batteries. In order to suppress the “shuttle effect,” a new strategy of using a highly lithium ion conductive lithium fluoride/graphene oxide (LiF/GO) solid electrolyte interphase (SEI) to mechanically prevent the lithium dendrite breakthrough is reported. When utilized in Li–S batteries, the LiF/GO SEI coated separator demonstrates significant feature in mitigating the polysulfide shuttling as observed by in situ UV–vis spectroscopy. Moreover, the restrained “shuttle effect” can also be confirmed by analysis of electrochemical impedance spectroscopy and characterization of lithium dendrites, which indicates that no insulating layer of solid Li 2 S 2 /Li 2 S is found on lithium anode surface. Furthermore, the LiF/GO SEI layer puts out good lithium ion conductivity as its lithium ion diffusion coefficient reaches a high value of 1.5 × 10 −7 cm 2 s −1 . These features enable a remarkable cyclic property of 0.043% of capacity decay per cycle during 400 cycles.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Yangyang Chen,Yu Liao,Ying Wu,Lei Li,Zhen Zhang,Sha Luo,Yiqiang Wu,Yan Qing
Lithium-sulfur batteries (LSBs) are considered promising candidates for next-generation battery technologies owing to their outstanding theoretical energy density and cost-effectiveness. However, the low conductivity and polysulfide shuttling effect of S cathodes severely hamper the practical performance of LSBs . Herein, in situ-generated single layer MXene nanosheet/hierarchical porous carbonized wood fiber (MX/PCWF) composites are prepared via a nonhazardous eutectic activation strategy coupled with pyrolysis-induced gas diffusion. The unique architecture, wherein single layer MXene nanosheets are constructed on carbonized wood fiber walls, ensures rapid polysulfide conversion and continuous electron transfer for redox reactions. The C–Ti–C bonds formed between MXene and PCWF can considerably expedite the conversion of polysulfides, effectively suppressing the shuttle effect. An impressive capacity of 1301.1 mA h g −1 at 0.5 C accompanied by remarkable stability is attained with the MX/PCWF host, as evidenced by the capacity maintenance of 722.6 mA h g −1 after 500 cycles. Notably, the MX/PCWF/S cathode can still deliver a high capacity of 886.8 mA h g −1 at a high S loading of 5.6 mg cm −2 . The construction of two-dimensional MXenes on natural wood fiber walls offers a competitive edge over S-based cathode materials and demonstrates a novel strategy for developing high-performance batteries.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 35
·15470-15482
·
IF 2.7
Qingtao Wang,Xiaoling Zhou,Hanbin Jin,Lulu Guo,Yanxia Wu,Shufang Ren
As one of the effective methods for hydrogen production, water electrolysis has been widely studied. However, the high overpotential challenge faced by the anode and the limitation of the electron transfer rate in this process significantly inhibit the efficiency of hydrogen production, which has become the main obstacle to overcome in the current research. The use of thermodynamically more favorable organic compounds to oxidize at the anode instead of traditional water oxidation (OER) is an effective strategy to optimize the process of electrolytic hydrogen production. In this paper, Ni3S2 catalysts co-doped with non-noble metals Li and Mn were prepared on nickel foam and used for the glycerol oxidation reaction (GOR) coupled with the hydrogen evolution reaction (HER). In alkaline solution, Li, Mn–Ni3S2@NF exhibits good GOR and HER performance. Specifically, overpotentials of 1.58 V vs. RHE and 0.54 V vs. RHE are required to reach a current density of 200 mA cm−2, respectively, and the catalytic performance of the material remains good after a long-term test. Li, Mn–Ni3S2@NF as a bifunctional catalytic material oxidizes glycerol to formate, and its faradaic efficiency (FE) is as high as 91%, and the volume of hydrogen production is close to the theoretical value. In addition, the replacement of the OER by the GOR can reduce the energy consumption by about 17.44%.
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 22
·3296-3301
·
IF 1.9
Lei Wang,Yuan Ji,Yuezhen He,Lun Wang,Hongqi Chen
Li+-Doped NaYF4:Yb,Er upconversion luminescent nanoparticles (UCLNPs) were synthesized and modified with poly(acrylic acid) (PAA). The luminescence of the carboxyl-functionalized UCLNPs at 664 nm was quenched in the presence of cupric ions (Cu2+) due to the coordination of Cu2+ with the carboxyl group of PAA. When pyrophosphate ions (PPi) were added, the luminescence of the UCLNPs was restored due to the competitive binding of PPi with Cu2+. However, pyrophosphatase (PPase) could promote the hydrolysis of PPi, thus releasing Cu2+, leading to requenching of the luminescence. Under optimal conditions, the luminescence response was virtually proportional to the activity of the PPase between 0.500 and 50.0 mU mL−1, and the limit of detection was 0.441 mU mL−1. Based on the competition assay approach, a new highly sensitive method in the red region for real-time detection of PPase activity was developed.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Yuqi Zhang,Zimu Zhang,Weixuan Chen,Xiang Zhang,Zisheng Guan
To enhance the performance of lithium-ion battery anodes, this study leverages recycled diamond wire-cut silicon particles, a byproduct of the photovoltaic sector. These particles undergo purification through acid wash and pyrolysis to eliminate contaminants, thereby serving as potential anode materials . The inherent challenge with silicon involves its significant volumetric expansion during lithiation and delithiation , which hampers its viability for commercial applications. Addressing this, the research introduces a facile approach by synthesizing porous silicon (pSi) via the Ag-assisted chemical etching method. Subsequently, a distinctive yolk-shell porous silicon@void@carbon (pSi@V@C) structure is created using a sacrificial template approach, ensuring the formation of voids between the porous silicon core and the carbon shell. This configuration mitigates the detrimental effects of silicon's volume expansion while enhancing electrical conductivity through the carbon shell. The pSi@V@C composite exhibits promising electrochemical performance, demonstrated by an initial discharge capacity of 1826 mAh g -1 and a Coulombic efficiency of 68.6% at 0.1 A g -1 . Remarkably, it maintains a capacity of 821.8 mAh g -1 after 550 cycles at 1 A g -1 , with a retention rate of 90.4%.
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Xifan Li,Guijing Chen,Xin Li,Zhaoyang Song,Wen Liu,Baicang Liu
The flourishing growth of electric vehicle market has led to pile of spent lithium-ion batteries (LIB), efficient treatment and recovery of retired LIBs is crucial for ecological environment and human health, especially the terminal treatment of spent lithium-ion battery raffinate (SLR). For selectively recycle Li + from SLR (the lithium and sodium concentration reaches up to 1000 mg/L and 31,200 mg/L, respectively), dibenzo 14-crown-4 ether (DB14C4) is synthesized as extractant for lithium due to the excellent size-match effect. The extraction performance of DB14C4 is evaluated from aspects of dosage, temperature, organic/aqueous phase (O/A) ratio, adsorption kinetics, adsorption selectivity and reusability through liquid-liquid extraction. The results manifested that DB14C4 exhibited fast adsorption kinetics and reached saturation in 1 h, and reached the highest adsorption capacity of 22.1 mg/g with concentration of 0.03 mol/L, O/A ratio of 1:4 and temperature of 25 °C. Besides, DB14C4 has excellent selective adsorption for Li + with lithium partition coefficient of 10.2 mL/g and Li + /Na + separation factor of 13.2. Furthermore, the selectivity of DB14C4 to Li + is studied by density functional theory calculation, including structure optimization, molecular orbital analysis, charger transfer and natural bond orbital (NBO) analysis. The results show that DB14C4 preferentially complex with Li + with lithium ion lies in the center plane of crown ether ring, and the DB14C4-Li + complex has higher charge transfer and bigger stabilization energy than DB14C4-Na + . This paper provides a feasible method for lithium recovery from SLR to guarantee sustainable lithium supply for electric vehicles, and offers brand-new perspectives to evaluate the full life cycle of LIBs.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yu Tang,Shengde Dong,Junjie Shan,Ping Li,Ying Cheng,Leya Guo,Yin Xiang,Yanxia Sun,Qi Xu,Chunxi Hai,Haijiao Xie,Yuan Zhou
The burgeoning energy sector exhibits a demand for lithium resources. Notably, salt lakes, rich in lithium, challenge due to the high Mg2+/Li+ ratios encountered. Nanofiltration, characterized by its simplicity, environmental sustainability, holds promising prospects for Mg2+/Li+ separation in salt lakes. Density functional theory (DFT) simulations reveal that sodium dodecyl sulfate (SDS) surfactant layers significantly lower the energy barrier for polyethylenimine (PEI) transfer, which fundamentally enhances the interfacial polymerization kinetics. This study activates polysulfone (PSF) ultrafiltration (UF) membrane surfaces with SDS surfactants to form a negatively charged surface-active interlayers, the hydrophilicity of the membrane surface was increased and then accelerating polymerization at the PEI/TMC interface. Under optimized conditions, the membranes achieve 98.6% MgCl2 retention and ultrahigh selectivity (S(Li/Mg) = 118.75) with a Mg2+/Li+ ratio of 50:1, showing sustained performance in a 44 h test. This work provides efficient separation method for high-performance lithium extraction from salt lake brines.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2025
·
IF 6
Huijuan Guo,Keyu Chen,Jun Wang,Khomidov Fakhriddin Gafurovich,Kadyrova Zulayho Raimovna,Linqiang Mao
The complexity and similar characteristics for multiple valuable metals presented in LIBs cathode materials result in difficulties in their extraction and separation. This study introduces a novel two-stage approach to recovery valuable metals from spent lithium-ion batteries (LIBs) by formic acid (FA) selective leaching and other transition metals by a deep eutectic solvent (DES) leaching. Li is first selectively leached by FA with leaching efficiency of 98.87 % and further recovered in Li 2 CO 3 by distillation and calcination, whereas transition metals (Ni, Co, Mn) exhibited minimal co-leaching just with 1.41 %, 0.68 %, and 8.66 %. FA can be regenerated through atmospheric pressure distillation and reused in Li leaching process. Furthermore, the use of betaine hydrochloride (BeCl) in the synthesis of novel DES with FA to leach Mn, Co and Ni from FA leaching residue. Under optimal conditions, the leaching efficiencies for Mn, Co and Ni reached 96.87 %, 99.61 % and 98.88 % respectively. BeCl released Cl − and formed soluble complexes [MeCl 4 ] 2− with Ni 2+ , Co 2+ , and Mn 2+ . The leaching process conformed to the contraction-nucleation model and controlled by interfacial chemical reactions. The activation energies of 44.01, 43.08, and 34.40 kJ/mol for Co, Mn and Ni leaching process. Finally, Mn, Co and Ni were precipitated and recovered from the leachate by introducing oxalic acid. Mn, Co and Ni were recovered in the forms of MnC 2 O 4 ·2H 2 O、CoC 2 O 4 ·2H 2 O、NiC 2 O 4 ·2H 2 O with recovery efficiencies of 98.45 %, 96.13 %, and 97.42 %, respectively. This method achieved separation and recycling valuable metals through a two-stage leaching strategy, with the characteristic of high efficiency and simple recycling process.
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Zesen Gao,Shijie Yang,Yan Yang,Futing Sun,Tianshuo Zhang,Yunluo Wang,Tianrui Zhou,Lang Tao,Hucheng Song,Haijie Chen
Solid-state Li-CO2 batteries possess unique merits, including high environmental friendliness, extremely high energy density, and wide operational temperature range. In this work, we used the garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZTO) as the solid electrolyte for Li-CO2 batteries. By a simple solid-state reaction under vacuum, LLZTO was tightly composited with organic materials. Detailed analysis confirms that a three-in-one effect was achieved, resulting in additional Li+ migration pathways, improved mechanical properties of the electrolyte, and more active sites for Li2CO3 decomposition. This contributes to accelerated Li+ transport and fast CO2 reaction kinetics. A solid-state Li-CO2 cell was assembled using a Ru@C cathode and an integrated layer of LLZTO@PVDF interfaced with an artificial molten salt. An exceptionally low charging overpotential (below 3.0 V) was achieved, maintaining a charge potential retention rate of over 99%. This work introduces LLZTO as a promising electrolyte for solid-state Li-CO2 batteries, shedding light on the advancement of next-generation Li-CO2 battery technologies.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yongbiao Sun,Hui Li,Haijun Lai,Yan Yu,Meiling Hou,Chao Fu,Zaizhou Wang,Chunxiang Zhang
Natural gas purification before liquefaction necessitates the use of efficient adsorbents with high selective CO 2 adsorption and easy regeneration. Because of its efficiency and ease of operation, the ion exchange is widely employed to adjust zeolites’ CO 2 adsorption. However, few in-depth mechanistic studies have been undertaken on cation substitution regulation of pore structure and gas–solid interaction, as well as their synergistic effects on CO 2 selective adsorption and zeolite regeneration. In this study, we synthesized Li + and K + -modified 13X and examined their material characteristics, thermodynamics, adsorption kinetics, and the adsorption–desorption performance under various desorption methods. The results showed that the variation in pore structure and gas–solid interaction with cation radius is non-monotonic, resulting in 13XLi and 13XK having better CO 2 selective adsorption than 13X. All zeolites are extremely stable after 10 adsorption–desorption cycles in each regeneration setting. 13X outperforms 13XLi and 13XK in CO 2 desorption at 30 °C, owing to its large non-micropore volume and low gas–solid interaction. 13XK has the lowest CO 2 desorption rate at low temperature but the highest at high temperature, owing to the flat micropore distribution and the progressive gas–solid interaction. Approximately 100 % regeneration of 13XK is achieved with CH 4 purging (150 mL/min) at 150 °C, owing to its smallest cumulative pore volume at 0.5 nm. This research could help to develop efficient cation-modified X zeolites for CO 2 deep removal from CH 4 streams prior to liquefaction, as well as advance the in-depth understanding of cation substitution mechanisms.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yu Chen,Zihui Yu,Yihan Wang,Chengliang Ma,Quanli Jia,Ye Li
Based on the degradation mechanism of refractory saggar involving penetration and corrosion by Li-ion battery (LIB) cathode materials, developing refractory composites with a contiguous corrosion resistant materials network structure are considered one of the most promising ways to simultaneously achieve enhanced penetration resistance and corrosion resistance in saggar materials. Here, a mullite-based composites with a contiguous K 2 O-Al 2 O 3 -SiO 2 amorphous phase (KASp) network structure were simply prepared by incorporating potassium feldspar. The resulting material features a contiguous KASp network structure and exhibits low connectivity pores. This structure significantly enhances the composites resistance to penetration and corrosion by LIB cathode materials, primarily due to the combined effects of the KASp physical barrier and reduced pore continuity. Additionally, the strong KASp and mullite/corundum interfacial bonding reinforce the composites, leading to exceptional mechanical strength.
✓ 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）