CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Zirui Wang,Xiao Du,Xuefeng Zhang,Guoliang Nie,Zhong Liu,Xiaowei An,Xuli Ma,Shanxia Luo,Xiaogang Hao
Electrically Switched Ion Exchange (ESIX) technology boasts advantages of high selectivity, low energy consumption, and environmental friendliness, and its core material, LiMn 2 O 4 , can efficiently separate lithium through unique lattice sieving and charge matching effect, yet it suffers from severe performance degradation in brine environments with ultra-high Mg/Li ratio. Currently, the microscopic mechanism responsible for this degradation remains unclear. In this study, we propose a “confined-capture-induced blocking” mechanism using experimental investigations, characterization techniques, and density functional theory (DFT) calculations. Specifically, the strong Coulomb interaction between high-charge-density Mg 2+ and the O atoms at the entrances of the [111] channels (the Li + migration channels) of LiMn 2 O 4 results in blockage of the channel entrances, thereby blocking the intercalation of Li + . Based on this mechanism, we propose a targeted solution: adopting a dynamic adsorption mode with solution flow. This approach effectively mitigates the adverse effects of Li + concentration polarization and Mg 2+ enrichment near the electrode, which lead to an abnormally high Mg/Li ratio in static adsorption, thereby enhancing the adsorption capacity from 1.437 mg/g in static adsorption to 5.124 mg/g at a flow rate of 2 l/min. Subsequently, pilot-scale experiments further validate the effectiveness of this strategy. This research provides theoretical support, engineering evidence, and practical guidance for the development of lithium extraction technology from salt lakes with ultra-high Mg/Li ratio.
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高影响因子
INORGANIC CHEMISTRY
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2018
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IF 4.7
Leyan Nian,Kui Wu,Guijie He,Zhihua Yang,Shilie Pan
In the exploration of new infrared nonlinear optical (IR NLO) materials, element substitution has been developed as an effective way to adjust the structural features and material performances. A series of new IR NLO materials have been discovered in the I–Ba–MIV–Q system (I = Li, Na, Cu, and Ag; MIV = Si, Ge, and Sn; Q = S and Se), and they undergo interesting structural transformation with different element substitution except Li analogues. Herein, we have successfully synthesized three selenides with different space groups (Ag2BaSiSe4: I4̅2m; Ag2BaGeSe4 and Ag2BaSnSe4: I222) in the above system and studied their properties through experimental and theoretical methods. Remarkably, the detailed analysis on the structural changes and properties comparison was also systematically investigated in the I–Ba–MIV–Q system and the results indicate that the distortion degrees of different IQ4 tetrahedra play the critical role to cause the structural transformation with the M or Q elements substitution. More importantly, we have also found that the structural changes have the close relationship with the distance d(I–I) between adjacent I cations in the I2BaSnSe4 system, which makes the four-membered rings formed by edge-sharing BaSe8 units change from the square to rhombus with the increase of d(I–I). The properties comparisons (band gap and NLO effect) in this system have been also systematically studied.
研究领域:
材料科学
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无机化学
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光学材料
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固态化学
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高影响因子
ACS Applied Nano Materials
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2021
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IF 5.097
Xinyu Shan,Zuoxing Guo,Yining Zou,Lijun Zhao
To meet practical application needs, high-mass-loading lithium–sulfur (Li–S) batteries are urgently needed for achieving good electrochemical performance. Here, unique three-dimensional (3D) reduced graphene oxide (rGO)-coated ultrathin zinc–cobalt oxide composite N-doped carbon self-supporting stratified porous nanosheet arrays, anchored on flexible carbon cloths (CCs) (rGO-S/ZnCo2O4@NC/CCs), are designed and chosen as independent cathodes. A lithium–sulfur battery using rGO-S/ZnCo2O4@NC/CC as the cathode exhibits a high capacity of around 1377.8 mAh g–1 and retains an outstanding capacity of around 1006.3 mAh g–1 after 700 cycles at 0.1 C with a sulfur loading of 2.2 mg cm–2. Moreover, even under a high sulfur load of 8.2 mg cm–2, a superior capacity of 735.9 mAh g–1 can be achieved at 0.1 C. In this work, a special function and a 3D self-supporting stratified porous nanostructure with a conductive rGO coating have been designed, which reasonably alleviate the “shuttle effect” of high-load Li–S batteries through the “internal and external double repair” action.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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高影响因子
POWDER TECHNOLOGY
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2023
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IF 5.2
Jie Huang,Zhiyi Li,Fengxia Liu,Wei Wei,Xiaofei Xu,Zhijun Liu
Li-ion batteries (LIBs) with micron-sized silicon monoxide (SiO x ) anodes are promising, ascribed to their favorable cost affordability and remarkable theoretical capacity, while the huge volume expansion and inferior Li + /e − conductivity of SiO x have severely restricted their further development. Herein, a micron-sized SiO x @carbon nanotube (CNT)/polymethyl methacrylate (PMMA) composite capsule is designed for advanced LIB anode via a novel Pickering emulsion template method. The volume variation of SiO x during (de)lithiation reactions is alleviated by the reserved space inside capsules, and the capsule shells of PMMA/CNT engage a significant Li + /e − conductivity as well. Besides, the activity of SiO x greatly remains due to the capsule protection and avoidance of high-temperature treatment. The experimental results indicate that the SiO x @CNT/PMMA composite anodes can present improved lithium storage abilities in aspects of capacity retention, rate performance, and coulombic efficiency. This proposed method hopes to provide a novel micron-scale structure design for Si-based anodes in LIBs.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2023
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IF 5.9
Zepeng Zhang,Qi He,Jie Lu,Qinghua Xu,Yehan Tao,Jian Du,Haisong Wang,Yingjuan Fu
The capability and longevity of lithium-ion batteries (LIBs) are heavily influenced by simultaneously increasing the lithium-ion extraction/insertion dynamics and enhancing the construction stabilization of Li 3 V 2 (PO 4 ) 3 (LVP) positive electrode material. With the goal to improve the battery's stability, fermentation residues rich in functional groups that contain oxygen might be wrapped around LVP. This is the first time, to our knowledge, that high-performance LVP cathode materials have been created utilizing leftover fermentation waste as a carbon source. More crucially, due to the promoted invertible V 3+ /V 4+ redox conjugate pair created by oxygen groups coinciding with the improved Li + dynamics properties, the top-performing material generated an excellent primal discharging capability of 131.9 mA h/g (approaching the projected performance) at 0.5 C. Additionally, after 500 cycles, the improved battery exhibits higher capacity retention of 95%.
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高影响因子
ELECTROCHIMICA ACTA
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2020
·
IF 6.215
Xianli Song,Haitao Zhang,Danfeng Jiang,Lipeng Yang,Jiahe Zhang,Meng Yao,Xiaoyan Ji,Gongying Wang,Suojiang Zhang
Solid-state batteries , which exhibit characteristics including uniform Li deposition, non-flammability and low interfacial resistance, are desirable for novel energy storage devices. Herein, a self-standing, fireproof and electrochemically stable organic-inorganic composite ionogel electrolyte was carefully designed and prepared by using polymerized ionic liquid (PIL), ionic liquid (IL), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium aluminum titanium phosphate (LATP) nanoparticles . The incorporation of LATP nanoparticles into polymer backbone was found to facilitate ionic transport due to the homogenous Li + distribution, which would further boost the ionic conductivity and mechanical properties. In addition, the introduction of IL favored the reduction of interface resistance. Benefiting from the nonflammability, the thermal shrinkage performance of as-prepared electrolyte could stand over a broad operating temperature range. A Li/Li symmetric cell containing optimized PIL-14 wt% LATP could be cycled steadily for over 2000 h at 50 °C. A lithium metal battery containing composite ionogel electrolyte exhibited an outstanding specific capacity of 145 mAh g −1 and 95% capacity retention at 50 °C even after 100 cycles. This study indicates that the co-employment of IL and inorganic nanoparticle is an effective strategy for the construction of organic-inorganic hybrid electrolytes for high-safety solid-state lithium metal batteries (LMBs).
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JOURNAL OF POWER SOURCES
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2019
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IF 7.467
Zeyi Yao,Wu Tang,Xinxin Wang,Chuan Wang,Chuluo Yang,Cong Fan
The organic cathodes with high specific capacity are highly desirable to fabricate high-specific-energy-density organic Li-ion full cells. Herein, we initially propose the long-term plan for the systematic synthesis of the oligomer family of 1,4-benzoquinone (BQ), which can possess theoretical specific capacity above 500 mA h g −1 . As a start, the dimer of 1,4-benzoquinone (2,2′-bis-(1,4-benzoquinone), BBQ) is synthesized, which can realize the specific capacity of 501 mA h g −1 and the average discharge potential of ~2.5 V (vs. Li + /Li). Even facing the dissolution problem, BBQ can deliver average specific capacities of ~190 mA h g −1 during 3000 cycles at 500 mA g −1 and ~120 mA h g −1 during 8000 cycles at 2 A g −1 in Li-ion half cells. Afterwards, the all-organic Li-ion full cells are fabricated by using the reduced state (Li 4 TP) of lithium terephthalate (Li 2 TP) as the starting anode and BBQ as the starting cathode. Delightfully, the resulting Li 4 TP-BBQ Li-ion full cells can realize the specific capacity of 316 mA h g −1 cathode in the 1st cycle (500 mA g −1 ). Meanwhile, average specific capacities of ~98 mA h g −1 during 1000 cycles can be fulfilled (500 mA g −1 ). The results of the Li 4 TP-BBQ Li-ion full cells are among the best all-organic Li-ion full batteries reported to date.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Wensen Liu,Yuxiang Du,Lanxuan Wei,Xiaolin Peng,Yaoxian Hu,Binbin Zhou,Yan Li,Shenghuan Liu,Zhaowu Zhu,Hui Su
Solvation extraction (metal extraction via a solvation mechanism) enables the recovery of multiple metal ions (e.g., Li, Co(II), Zn, Mn(II)) from chloride solutions without alkali consumption or waste production. However, effective alkali-free Ni(II) extraction reagents are lacking, leading to obstacles throughout the recovery route. In this study, three pyridine carboxamides, namely, N-2-ethylhexylpyridine-3-formamide (MEH3), N-2-ethylhexylpyridine-4-formamide (MEH4), and N, N-bis(isooctyl)pyridine-4-carboxamide (DH4) were used to extract Ni(II) and Co(II) without pH adjustment, and the results showed that the order of extraction ability for Ni(II) is MEH3 > MEH4 > DH4. Density functional theory (DFT) calculations showed that the extraction ability of Ni(II) may be related to the binding energies of the Ni(II) complexes. The MEH3 system was selected as the optimal choice for Ni and Co recovery from the chloride leaching solutions of the NCM battery materials. Using 178.8 g/L Mn(II) as a salting-out agent, >99 % Ni(II) and 99 % Co(II) were extracted in three-stage batch continuous tests at an O/A ratio of 7:1. The concentrations of Ni(II), Co(II), Mn(II), and Cu(II) in the organic phase during the first stage were 3.9, 1.7, 1.1, and 0.3 g/L, respectively, and Ca, Mg, and Al impurities were barely extracted. Ni(II) and Co(II) were stripped using deionised water. Under an O/A of 15:1, the single-stage stripping efficiency of Ni(II) and Co(II) reached 88.5 % and 98.3 %, respectively, with concentrations reaching 47.0 and 7.5 g/L, respectively. Mn(II) and Li in the solution were co-extracted and recovered using a TBP (tributyl phosphate) /FeCl 3 extraction system. Based on these results, a closed-loop process for recovering Ni, Co, and Mn from spent NCM battery materials is proposed.
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高影响因子
LANGMUIR
·
2021
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IF 3.882
Qingyu Liao,Dong Chen,Xianhong Zhang,Yuhong Ma,Changwen Zhao,Wantai Yang
A facile synthetic route was developed to prepare a surface-grafted brush layer of poly(vinyl ethers) (PVEs) directly by a radical mechanism, with the “naked” Li+ acting as a catalyst. Density functional theory calculations suggested that complexation of naked Li+ to VEs significantly reduced the highest unoccupied molecular orbital–lowest unoccupied molecular orbital (HOMO–LUMO) energy gap from 5.08 to 0.68 eV, providing a better prospect for electron transfer. The structure, morphology, and surface properties of grafted polymer layers were characterized using attenuated total reflection Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and dynamic water contact angle (DCA). Moreover, ellipsometry data indicated that the thickness of the polymer brushes was in the range of 20–60 nm, which corresponds to the grafting densities of 0.65–1.15 chain/nm2, and DCA decreased from 84.4 to 45.3°. Most importantly, no hydrolysis was observed for the modified surface after 30 days of exposure to phosphate-buffered saline solution, 0.1 mol/L NaOH(eq) and 0.1 mol/L HCl(eq), demonstrating excellent hydrolysis resistance with long service life. In addition, as a proof of concept, the side hydroxyl groups of grafted PVEs provide active sites for efficient fixation of bioactive molecules, e.g., glycosaminoglycan and serum protein.
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Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 19
·11623-11631
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IF 12.732
Shixuan Wang,Alvin Dai,Yuliang Cao,Hanxi Yang,Amine Khalil,Jun Lu,Hui Li,Xinping Ai
Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes are investigated to realize high energy density Li ion batteries for long life electric vehicle applications. However, capacity decay and thermal instability due to cathode-electrolyte interfacial degradation remain challenges that require sophisticated surface stabilization methods to address. Here, we propose a strategy, for the first time, to form an artificial Li+-conducting cathode-electrolyte interphase (ALCEI) on the NCM811 cathode surface using a nucleophilic reaction between polysulfides and vinylene carbonate (VC). The as-formed ALCEI layer simultaneously protects the NCM particles from electrolyte corrosion and facilitates Li+ ion transport, thus enabling stable and high rate cycling of NCM811. As a result, the ALCEI-modified NCM811 cathode exhibits a high capacity (211.6 mA h g−1 at 0.1C), notable rate capability (134 mA h g−1 at 10C), and superior cycle stability (94.2% over 200 cycles at 1C). These results underscore the use of interfacial engineering in high voltage cathode material development and provide a feasible strategy for stabilizing Ni-rich cathode interfaces in practical Li ion battery applications.
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Advanced Science
·
2020
·Vol. 7
·期 18
·1903045
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IF 15.84
Zhe Cui,Shu-Ang He,Qian Liu,Guoqiang Guan,Wenlong Zhang,Chaoting Xu,Jinqi Zhu,Ping Feng,Junqing Hu,Rujia Zou,Meifang Zhu
SnS, is a promising anode material for lithium ion batteries (LIBs) and sodium ion batteries (SIBs), however, undergoes poor cyclic lifespan due to its huge volume changes and bad electroconductivity. Here, a modified CVD method is used to directly grow graphene-like carbon film on the surface of SnS nanosheet arrays which are supported by Co-, N-modified porous carbon fibers (CCF@SnS@G). In the strategy, the SnS nanosheet arrays confined into the integrated carbon matrix containing porous carbon fibers and graphene-like carbon film, perform a greatly improved electrochemical performance. In situ TEM experiments reveal that the vertical graphene-like carbon film can not only protect the SnS nanosheet from destruction well and enhance the conductivity, but also transforms SnS nanosheet into ultrafine nanoparticles to promote the electrochemical kinetics. Systematic electrochemical investigations exhibit that the CCF@SnS@G electrode delivers a stable reversible capacity of 529 mAh g −1 at a high current density of 5 A g −1 for LIBs and 541.4 mAh g −1 at 2 A g −1 for SIBs, suggesting its good potential for anode electrodes.
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ACS Applied Energy Materials
·
2023
·
IF 6.4
Aolai Wang,Dexuan Pei,Ziying Liu,Shuo Huang,Guozhong Cao,Hongyun Jin,Shuen Hou
Composite polymer electrolytes (CPEs) with high security and mechanical flexibility are needed for all-solid-state lithium-metal batteries (LMBs). However, their practical application is hindered by the increasing demand for high-power and high-areal-energy-density storage solutions. Herein, a high-powered CPE relying on poly(ε-caprolactone) (PCL) as the polymer matrix is developed. The binding energy of Li+-PCL is predicted to be −130.163 kcal·mol–1 via density functional theory calculations, which implies a high dissociation of Li salts in the PCL matrix. The weak interactions between the Li+ and the polymer chains enable the CPEs with a high Li+ transfer number (tLi+) of 0.71. Besides, LiFePO4//Li batteries deliver a high capacity retention of 85% for over 600 cycles at 2.0C. This work demonstrates the tremendous potential of PCL-based CPEs in promoting the application of high-power-performance LMBs.
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