CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haihua Wang,Futao Li,Chao Zhu,Chaoxian Chen,Ze Ding,Xiangping Chen
The rapid growth of the new energy market has led to a substantial increase in the demand for ternary lithium batteries, highlighting the importance of recycling their cathode materials to mitigate environmental risks and alleviate the limited supply of valuable metals. Traditional recycling methods for waste ternary lithium batteries are often inefficient and energy-intensive, particularly in recovering lithium. This study proposes a novel process for the separation and recovery of Li, Ni, Co, and Mn from simulated spent ternary lithium battery cathode materials. The process employs chromatographic separation and column operation techniques using amine-modified polyacrylonitrile fibers as adsorbents, which have selective adsorption capacity for Li with transition metals Ni, Co, and Mn. Experimental results demonstrated a lithium recovery rate of 99.4 % with 100 % purity under optimized conditions: solution pH of 2, feed solution concentration of 10 mmol/L, a fully packed adsorption column, and a feed flow rate of 0.29 mL/min. During the elution process, 0.2 mol/L nitric acid achieved effective desorption of the adsorbed metals. Furthermore, the intermetallic separation coefficients revealed significant separation efficiencies for Ni, Co, and Mn. This proposed method offers notable advantages in recovery efficiency, selectivity, and environmental sustainability, with particularly outstanding performance in lithium recovery, making it a promising strategy for recycling valuable metals from spent ternary lithium batteries.
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2024
·
IF 2.6
Guangrui Han,Lang Liu,Minyu Jia,Xuting Li,Linrui Hou,Changzhou Yuan
Recently, silicon has been considered one of the preferred materials for the anodes of next-generation high-energy-density Li-ion batteries due to its advantages of high specific capacity, low working voltage, and abundant reserves. However, the huge volume change and poor electrical conductivity of silicon anodes during the lithiation and de-lithiation process seriously affect their practical application. Herein, honeycomb porous silicon is synthesized by a modified Stöber method and magnesium thermal reduction, which avoids using toxic gases (such as silane) in the traditional preparation of commercial nano-silicon. Moreover, the honeycomb porous structure can effectively alleviate the volume expansion during the charge/discharge process and agglomeration behavior of nano-silicon. Therefore, thanks to its unique structural merits, the honeycomb porous silicon anode is endowed with a reversible specific capacity of 824.1 mA h g−1 after 100 cycles at 0.5 A g−1 and 679.2 mA h g−1 even at an ultrahigh current density of 1.0 A g−1 after an extended cycling period of 200 cycles, which is almost twice that of commercial nano-silicon. More importantly, this finding offers promising advancements in designing silicon anodes in energy storage.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Tianli Li,Wentao Liu,Yizhou Liu,Jian Wang,Hua Hao,Zhiyong Yu,Hanxing Liu
The paramount target in advancing high-efficiency lithium-sulfur (Li–S) batteries lies in hindering polysulfides shuttling and enhancing redox kinetics. Herein, the covalent organic frameworks (designated as TBCOF) are grafted in-situ on the surface of MXene to achieve MXene@TBCOF heterostructure at ambient temperature, modulating the kinetics behavior of ions owing to its unparalleled ionic sieving functionality. The resultant compound possesses a gradient (non-conductive/ conductive) electric field effect, well-defined porous architecture, and abundant sulfophilic/lithiophilic sites, enriching the chemical space of 0D-2D heterostructures. By harnessing the multiple-in-one characteristics of MXene@TBCOF heterostructure, the formed electron-bridge of integrated conductive MXene in heterostructures prohibits the accumulation of TBCOF and MXene, serving as a versatile accelerator for the polysulfides bidirectional evolution, as comprehensively evidenced by theoretical analysis and pouch cells. Therefore, the batteries equipped with MXene@TBCOF functional separator acquire a brilliant cyclicity at a current density of 1C (with capacity decaying rate of merely 0.0191 % per cycle) during 1500 cycles. Impressively, even with a sulfur loading up to 9.31 mg cm −2 , the batteries exhibit a superior area capacity of 7.14 mAh cm −2 after enduring 90 cycles. This work proposes an innovative one-step synthesis strategy to construct catalytic “ion-sieving” heterostructure via covalent coupling for practical Li-S batteries.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Chengzhong Xiong,Runzhang Tao,Jian Lu,Shilong Li,Dong Zou,Yuqing Sun,Wenheng Jing
Efficient recovery of Li + from lithium-ion batteries (LiBs), which also include Co 2+ , Ni 2+ , or Mn 2+ in the cathode material, remains a formidable challenge because the sizes and physicochemical properties of these ions. Composite lamellar membranes are emerging as highly ion-selective nanochannels with controllable interlayers. Herein, Li + /Co 2+ was precisely separated through two-dimensional MXene/δ-MnO 2 composite nanochannels under an electric field. The nanochannels were constructed on tubular ceramic membranes via hydroxyl crosslinking. The membrane layer spacing can be extended to 5.7 Å by electrostatic repulsion between MXene and δ-MnO 2 nanosheets, which is suitable for Li + /Co 2+ separation. Under an electric field of 2 mA cm −2 , Li + /Co 2+ was nearly completely separated, with a high Li + flux of 0.0094 mol m -2 h −1 , and the energy consumption was ∼0.315 kW h (mol Li + ) -1 . Similarly, near-complete separation of Li + /Ni 2+ and Li + /Mn 2+ can be achieved at a current density of 2 mA cm −2 . The transport of Li + in solution was accelerated under a positive electric field and by partial dehydration in the nanopores. Meanwhile, the zeta potential was distinctly more negative in the composite membranes than in individual MXene or δ-MnO 2 . Consequently, Co 2+ was rapidly adsorbed on the negatively charged membrane surface through electrostatic interactions and complexation, forming a positively charged Co 2+ layer that electrostatically repelled further Co 2+ adsorption, ultimately achieving near-complete separation of Co 2+ . Owing to their stable and robust structure, the MXene/δ-MnO 2 membranes maintained high separation efficiency in acidic solutions containing Li + and Co 2+ and remained stable over eight cycles (up to 14 h) of ion separation under an electric field. This approach can potentially realize 2D membrane composites for efficient ion separation in practical applications.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yi-Ying Ma,Ze-Long Lu,Yun-Zhu Xing,Wei-Shi Zheng,Chun-Guang Liu
In this case, various characterization technologies have been employed to probe dissociation mechanism of cellulose in N , N -dimethylacetamide/lithium chloride (DMAc/LiCl) system. These results indicate that coordination of DMAc ligands to the Li + –Cl − ion pair results in the formation of a series of Li x (DMAc) y Cl z (x = 1, 2; y = 1, 2, 3, 4; z = 1, 2) complexes. Analysis of interaction between DMAc ligand and Li center indicate that Li bond plays a major role for the formation of these Li x (DMAc) y Cl z complexes. And the saturation and directionality of Li bond in these Li x (DMAc) y Cl z complexes are found to be a tetrahedral structure. The hydrogen bonds between two cellulose chains could be broken at the nonreduced end of cellulose molecule via combined effects of basicity of Cl − ion and steric hindrance of [Li (DMAc) 4 ] + unit. The unique feature of Li bond in Li x (DMAc) y Cl z complexes is a key factor in determination of the dissociation mechanism.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Sustainable Systems
·
2025
·
IF 6.1
Wei Lin,Yulu Wu,Xinyu Hu,Peng Yang,Hong Wen,Tianfu Zhao,Lianbang Wang,Chaoqi Shen
A well-designed solvothermal approach has been employed to synthesize olivine LiMn 0.5 Fe 0.5 PO 4 (LMFP) cathode material with a nanoplate configuration. This method precisely controls crystal growth to achieve a high proportion of (010) facets while minimizing intrinsic defects. These modifications significantly enhance lithium-ion diffusion kinetics and optimize the electrochemical performance of LMFP. The nanoscale of the (010) facets and the reduced anti-site defect concentration in the MP-PRO sample functionalize jointly to promote lithium-ion transport during the long-cycle. Furthermore, the superior electrochemical performance is closely linked with significantly reduced impedance and enhanced Mn redox kinetics. Both theoretical calculations and experimental results indicate that the confinement effect induced by 1,3-propanediol directs facet orientation and confines nanoplate growth. Compared to the product synthesized using water (MP-H 2 O), the 1,3-propanediol-based sample (MP-PRO) delivers a high specific capacity of 130.7 mAh g −1 at 5C and demonstrates excellent cycling stability, with an 84.6% capacity retention after 1000 cycles. This study provides new insights into the kinetics of Mn redox in LMFP electrodes and reveals an effective electrode structure design to realize long-life high rate batteries.
✓ 已验证
产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2024
·
IF 9.8
Jiaying Zheng,Jiawei Liu,Yanrong Liang,Xiangjia Sun,Jiao Liu,Tongtong Zhu,Chunyan Lv,Xiaojuan Liang,Weidong Xiang
In laser illumination, there is considerable interest in phosphor-converted laser diodes that boast high efficiency and exceptional thermal stability. Phosphor-in-glass (PiG) and phosphor-in-glass film (PiF) are highly favored for their efficiency, cost-effectiveness, and ease of fabrication. To tackle the issue of low thermal conductivity of glass, a novel lithium–aluminum–silicate glass is innovatively developed. This glass induces the precipitation of spodumene crystalline phase, enhancing material stability. Utilizing solid-state sintering techniques, Y 3 Al 3.5 Ga 1.5 O 12 :Ce 3+ (YAGG:Ce) PiG is fabricated, which exhibited a luminous flux (LF) of 866.76 lm under 450 nm blue light with 3.88 W input power. Benefiting from the high thermal conductivity of sapphire substrate and the high-intensity glass system, YAGG:Ce PiF demonstrated a saturation threshold of 10.20 W, yielding an impressive LF of 2178.1 lm, which is 2.5 times that of PiG samples. Notably, the thermal conductivity increased significantly from 2.2 W m −1 K −1 (PiG) to 7.0 W m −1 K −1 (PiF), surpassing traditional organic resin materials. To validate the practicality of the two-color converters, it integrates them into both starlight lamp and laser flashlight modules for encapsulation, thereby generating attractive green light in various environments. This design holds the potential to become the ideal choice for the next generation of high-power, high-brightness laser illumination.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Xinru Wang,Qiuxu Chen,Daming Yang,Ying Li,Dongxu Yin,Baoxin Ni,Wei Lu,Guiru Sun,Ming Feng
Photo-assisted electrochemical strategy has garnered interest for its ability to diminish the large overpotential of lithium-oxygen batteries (LOBs). Nonetheless, creating a sophisticated photocatalyst capable of absorbing a wide spectrum of light and dramatically lowering the recombination rate for electron-hole pairs presents a significant challenge. Herein, we design an Ag-doped ZnO (Ag@ZnO) hollow nanosphere as photocatalysts to boost the reaction dynamics of photo-assisted LOBs. The Ag@ZnO hollow nanospheres, featuring a mesoporous structure, are beneficial for improving O 2 transport and enabling the retention of discharge products. Additionally, the ability to absorb light and the efficiencies of electron-hole separation are enhanced for Ag@ZnO as a result of Ag doping. The electrons generated by photoexcitation facilitate the conversion of O 2 to produce Li 2 O 2 during discharge, whereas during charging, the presence of holes causes the decomposition of Li 2 O 2 . Consequently, a significantly low overpotential of 0.22 V, ultrahigh cycling efficiency of 93.73%, and good reversibility was achieved for the photo-assisted LOBs using Ag@ZnO. We consider that this work can offer a reliable strategy to improve electrochemical kinetics and contribute to the development of efficient photocatalysts for photo-assisted LOBs.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Xin Jiang,Li Qin,Haifeng Yu,Ling Chen,Hao Jiang,Chunzhong Li
Single-crystalline LiNi0.6Mn0.2Co0.2O2 cathodes (NMC622) synthesized by all-dry solid-phase synthesis (ADSPS) are promising candidates for high-voltage Li-ion batteries (LIBs) in virtue of their ecofriendly and cost-effective merits. However, serious Li/O loss at high sintering temperatures results in their structural and interfacial instabilities. Herein, a strontium/tantalum (Sr/Ta) codoped and lithium-borate (LBO) coated single-crystalline LiNi0.6Mn0.2Co0.2O2 (NMC622) with a superior layered structure is successfully prepared by ADSPS for the first time. Sr ions can reduce the sintering temperature by promoting grain-boundary fusion and particle growth, while Ta ions with a high Ta–O bond energy (839 kJ mol–1) further alleviate oxygen loss to decrease Li/Ni mixing and oxygen vacancies. The LBO coating layer helps to remove surface residual alkali, enhancing interfacial stability and Li-ion transfer dynamics. Therefore, the resultant cathode displays a high capacity of 191.9 mAh g–1 at 0.1C with a superior capacity retention of 81.6% at 1C within 2.7–4.5 V after 2000 cycles in pouch-type full cells.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhengren Tao,Fangrui Cheng,Yinghan Wang,Sijie Su,Enhai Song,Jiulin Gan,Shi Ye
The arrangement of lithium and niobium in the LiNbO 3 lattice is crucial to its notable ferroelectric, piezoelectric, ion conductive, and nonlinear optical properties. However, the synthesis of Li concentration-gradient nanocrystals remains a significant challenge. In this paper, we report a reliable method for synthesizing LiNbO 3 : Yb/Er nanocrystals with a Li-gradient through topochemical molten salt synthesis. We elucidate the Li-gradient characteristics using various analytical techniques, including depth-dependent elemental analysis. Variable-temperature upconversion luminescence spectroscopy provided insights into thermally induced surface and interior Li + diffusion. Our findings demonstrate that Li-gradient nanocrystals exhibit enhanced ferroelectric behavior and increased sensitivity to mechanical force in upconversion emission response. This study proposes a feasible universal strategy for synthesizing alkali metal niobate materials with controlled polarization, offering promising candidates for flexible, low-power optoelectronic devices.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Zhiguo Li,Fangbo Zhao,Hongxu Chen,Liu Yang,Jiaming Zhang
The active layer of the thin film composite (TFC) nanofiltration membrane prepared by traditional interfacial polymerization (IP) was usually a non-homogeneous state with dense in the middle and loose on both sides. Such structure would reduce the stability of membrane in operation. In this paper, a novel electrospray polymerization nanofiltration (EPNF) membrane was fabricated for efficient and long-term stable separation for Mg 2+ /Li + by multiple scan 3D electrospray printing technique. The active layer consisted of two homogeneous separation layers, the piperazine-trimesoyl chloride (PIP-TMC) inner layer and polyethyleneimine based (PEI-TMC) outer layer. With a fixed scan of inner layer, the effect of scan number of PEI-TMC outer layer on the performance of EPNF membrane was analyzed detailly from chemical structure and ion separation performance. Under the synergistic effect of electrostatic repulsion and pore size screening, the EPNF membrane achieved a Mg 2+ /Li + separation factor of 36.28 and only 1.5 % performance loss in the operation of 150 h. The electrospray polymerization process presented unique advantages in preparing TFC nanofiltration membranes with long-term separation stability.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2011
·Vol. 212
·期 22
·2487-2492
·
IF 2.437
Chang Su,Yinpeng Ye,Lihuan Xu,Cheng Zhang
A novel sulfide-containing aniline, 4-amino-dihydrobenzothiophene (ADBT), is synthesized by the alkylbromination of 1,2-dimethyl-3-nitrobenzene. Copolymers of aniline and ADBT, P(An-co-ADBT), are prepared by chemical oxidative polymerization and tested as a cathode material for Li-ion batteries. The results show that the copolymerization activity of ADBT is lower than that of aniline. The charge/discharge tests show that the P(An-co-ADBT)-2 gives well-defined and sloping plateaus in the potential rang of 3.0–4.0 V and quite a high capacity of 104.7 mAh g −1 . The P(An-co-ADBT)-2 also shows high cycling stability and coulombic efficiency. After 50 cycles, the discharge capacity of the P(An-co-ADBT)-2 still maintains 87.8% of the capacity obtained at the initial cycle.
✓ 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）