SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yanan Wei,Qian Zhang,Yuan Han,Xinyu Xu,Wenmeihui Zhao,Ying Hu,Rongmei Liu,Guixiang Qian,Zhongliang Tian,Chao Yang
In China, 80 % of lithium resources are in the salt lakes of the Tibetan Plateau, although the Mg 2+ /Li + ratios in them are too high, limiting the development of China’s lithium extraction industry from the salt lakes. This study investigates the potential of the LiMn 2 O 4 -Zn cell system for lithium extraction from brines with high Mg 2+ /Li + ratios. The system demonstrates excellent selectivity for Li + and efficiently extracts Li + even in brines with Mg 2+ /Li + ratios as high as 100:1 (wt%). The system operates stably at various brine concentrations, particularly in high-salinity environments. The study also investigates the kinetic performance of the LMO-Zn system, revealing optimal performance at high Li + concentrations and moderate current densities. The LiMn 2 O 4 -Zn cell system presents a promising approach for lithium extraction from brines, offering high selectivity, reversibility, and adaptability.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Li Wei,Zhang Menghang,Sun Xinyi,Sheng Chuanchao,Mu Xiaowei,Wang Lei,He Ping,Zhou Haoshen
Li-CO 2 batteries offer a promising avenue for converting greenhouse gases into electricity. However, the inherent challenge of direct electrocatalytic reduction of inert CO 2 often results in the formation of Li 2 CO 3 , causing a dip in output voltage and energy efficiency. Our innovative approach involves solid redox mediators, affixed to the cathode via a Cu(II) coordination compound of benzene-1,3,5-tricarboxylic acid. This technique effectively circumvents the shuttle effect and sluggish kinetics associated with soluble redox mediators. Results show that the electrochemically reduced Cu(I) solid redox mediator efficiently captures CO 2 , facilitating Li 2 C 2 O 4 formation through a dimerization reaction involving a dimeric oxalate intermediate. The Li-CO 2 battery employing the Cu(II) solid redox mediator boasts a higher discharge voltage of 2.8 V, a lower charge potential of 3.7 V, and superior cycling performance over 400 cycles. Simultaneously, the successful development of a Li-CO 2 pouch battery propels metal-CO 2 batteries closer to practical application.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Bohua Li,Jingning Lai,Fengling Zhang,Wen Sun,Zhengqiang Hu,Boshun Gui,Nan Chen,Li Li,Feng Wu,Renjie Chen
LiI in Li-O 2 batteries has shown promise in reducing charge overpotential. However, the shuttle effect of oxidated iodine species (OISs) can lead to lithium metal corrosion and loss of OISs. During the discharging process, these iodine species can undergo side reactions, resulting in the accumulation of LiOH and other parasitic products, which in turn accelerates battery failure. In this work, we have drawn inspiration from mussel protein and utilized a simple co-deposition method to form a robust biomimetic functionalized coating on the surface of the glass fiber separator. This was achieved by grafting catechol/polyamine (CA/PA) with 11-mercaptoundecanoic acid (MUA). This separator exhibits strong electrostatic repulsion towards negatively charged OISs and, conversely, electrostatic attraction towards Li + , this dual action effectively suppresses the shuttle effect and facilitates Li + transport. When equipped with this modified separator, the Li-O 2 battery effectively reduces the accumulation of LiOH and demonstrates significantly enhanced rate performance and cycle stability. Our findings provide a versatile approach for the design of modified separators for Li-O 2 batteries with redox mediators (RMs).
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CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Dan Li,Fu Sun,Yuqing Zhang,Yulong Liu,Hao Sun,Haiming Xie,Jia Liu,Seung-Taek Myung,Jiefang Zhu
In situ characterization on interface stability has been hardly tried in redox mediator (RM)-involved Li-O 2 battery thus far. Here, benzyltriethylammonium iodide (BTEAI) can act as a self-defensive RM in the electrolyte LiTFSI/TEGDME to enhance the reaction kinetics and increase the cycling stability by suppressing the redox shuttling. I - effectively reduces the charging overpotential by changing decomposition route for Li 2 O 2. BTEA + can facilitate LiTFSI decomposition in the electrolyte, and participate in formation of an organic–inorganic composite SEI-contained layer on Li anode. Moreover, for the first time, non-destructive synchrotron X-Ray tomography is used to investigate the mechanism of suppressing shuttle effect by monitoring the morphological evolution of electrodes interface. This work provides an insight into the development of functional RM and in situ protection strategies for Li anodes in Li-O 2 batteries.
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RESEARCH ON CHEMICAL INTERMEDIATES
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2017
·Vol. 44
·期 2
·1105-1117
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IF 1.369
Li Na,Gan Kaifeng,Lu Deli,Zhang Jinlong,Wang Lingzhi
Abstract A three-dimensionally macroporous–mesoporous lithium ion sieve (3DM-H 4 Ti 5 O 12 ) was transformed from 3DM-Li 4 Ti 5 O 12 through washing with HCl solution, which was synthesized by a combination of hydrothermal and low-temperature calcination (600 °C) treatment, using polystyrene microarray as hard-template, and titanium isopropoxide and lithium acetate as co-precursors. The influence of HCl concentration and temperature on the deintercalation rate of Li and Ti from Li 4 Ti 5 O 12 was specifically explored to maximize the extraction ratio of Li/Ti. The acceleration of Li extraction and insertion in a porous structure was verified using nonporous Li 4 Ti 5 O 12 as a control. 3DM-H 4 Ti 5 O 12 showed superior Li + adsorption performance (5.51 mmol/g) compared with its nonporous counterpart (1.12 mmol/g), which was ascribed to the reduced Li + mass transfer resistance in the highly interconnected porous channel. The ion selectivity of the 3DM-H 4 Ti 5 O 12 lithium ion sieve followed the order of Li + > Na + ~ Ca 2+ > K + > Mg 2+ . The adsorption performance could be maintained after six cycles. The high adsorption capacity, excellent selectivity, and good recyclability demonstrate the prosperous potential application of 3DM-H 4 Ti 5 O 12 . Graphical Abstract
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Hao Xu,Shuai Liu,Zhiang Li,Fan Ding,Ting Wang,Ting Liu,Weimin Wang,Kaikai Song,Jie Liu,Lina Hu
Succinonitrile has shown significant promise for application in polymer electrolytes for solid-state lithium metal batteries due to its high ionic conductivity at low-temperature. However, the use of Succinonitrile is limited due to its corrosion of Li metal. Herein, we report a solid polymer electrolyte with high ionic conductivity (2.17 × 10 −3 S cm −1 , 35 °C) enhanced by Ti 3 C 2 T x . Corrosion of the Li anode is prevented due to the Succinonitrile molecules being efficiently anchored by Ti 3 C 2 T x . Meanwhile, the coordination environment of Li + is weakened due to the introduction of competitive coordination induction effects into the polymer electrolyte, resulting in efficient Li + conduction. Furthermore, the mechanical properties of the electrolyte are enhanced by modulating the ratio of Ti 3 C 2 T x to suppress the growth of Li dendrites. Therefore, Li||Li symmetric batteries deliver stable cycling up to 8000 h at 28 °C. LiFePO 4 ||Li full batteries exhibit excellent cycling stability of 151.7 mAh g −1 with a capacity retention of 99.3% after 300 cycles. This work not only presents a new idea to suppress the corrosion of the Li anode by Succinonitrile but also provides a simple, feasible, and scalable strategy for high-performance Li metal batteries.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Liyuan Wang,Lingli Dong,Liyuan Xie,Zhitao Wang,Linpo Li,Enbo Shangguan,Jing Li
Regulating metal nodes to innovate the metal–organic framework (MOF) structure is of great interest to boost the performance of MOFs-incorporated composite solid electrolytes. Herein, Ce4+ with a low-lying 4f orbital is selected as metal center to coordinate with organic ligand to prepare MOF of Ce-UiO-66. The unsaturated open metal sites and defected oxygen vacancies furnish Ce-UiO-66 with strengthened Lewis acidity, which promotes Ce-UiO-66 interacting effectively with both poly(ethylene oxide) (PEO) and Li salt anions. Accordingly, Ce-UiO-66 as additive fillers can be uniformly dispersed in PEO matrix to form an advanced composite solid-state electrolyte (Ce-UiO@PEO) with accelerated Li+ transport. The optimized Ce-UiO@PEO displays a boosted ionic conductivity of 4.20 × 10–4 S cm–1 and an improved Li+ transference number of 0.39 at 60 °C, which are highly comparable to those of other MOFs@PEO electrolytes. Combined with the mechanical and thermal stabilities, such a Ce-UiO@PEO electrolyte enables Li/Li symmetric and Li/LiFePO4 full cells with superior cycling stability and rate performance. The Ce-UiO@PEO electrolytes are of great potential to be applied in high-performance lithium metal batteries.
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MATERIALS RESEARCH BULLETIN
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2024
·
IF 5.3
Shimei Xu,Song Liu,Yanlin Zhou,Rengui Xiao,Xiang Ke
Organic materials have garnered significant attention due to abundant resources, recyclability, and ease of design. However, they are hampered in practical applications by poor conductivity and high solubility. Herein, a lithium metal battery is developed in this work, utilizing the cathode material polyanthraquinonyl sulfide (PAQS) doped with a trace of NaCl. Additionally, the ionic liquid lithium bis-trifluoromethanesulfonimide and lithium metal as the anode. Physicochemical characterizations utilizing Raman spectroscopy and X-photoelectron spectroscopy indicate that both Na + and Li + migrate within the cell, forming a dual-cation battery. In addition, the battery displays exceptional rate performance with a capacity of 86 mAh·g −1 at 20 C, which is more than triples the capacity without NaCl, and has excellent cycling performance. Moreover, it retains 98 % capacity after 1000 cycles at 2 C with no significant degradation. This research offers an innovative strategy for developing a high-performance double-cation battery.
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Materials
·
2024
·Vol. 17
·期 19
·4682
·
IF 3.1
Duo Wang,Zhaomin Wang,Chunli Wang,Dongming Yin,Yao Liang,Limin Wang,Yong Cheng,Ming Feng
Polyanionic structures, (MO4)n−,can be beneficial to the transport of lithium ions by virtue of the open three-dimensional frame structure. However, an unstable interface suppresses the life of the (MO4)n−-based anode. In this study, MnWO4@C nanorods with dense nanocavities have been synthesized through a hydrothermal route, followed by a chemical deposition method. As a result, the MnWO4@C anode exhibits better cycle and rate performance than MnWO4as a Li-ion battery; the capacity is maintained at 718 mAh g−1at 1000 mA g−1after 400 cycles because the transport of lithium ions and the contribution of pseudo-capacitance are increased. Generally, benefiting from the carbon shell and electrolyte additive (e.g., FEC), the cycle performance of the MnWO4@C electrode is also effectively improved for lithium storage.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yameng Jiang,Rongrong Liu,Mingjie Liu,Wenbo Ye,Baojian Liu,Qiwei Yang,Zongbi Bao,Qilong Ren,Zhiguo Zhang
H 2 TiO 3 (HTO), recognized as a promising lithium-ion sieve, encounters significant challenges related to slow kinetics and particle agglomeration that hinder its industrial applicability. This study aims to mitigate these limitations by employing a dual-modification strategy that integrates rare-earth doping and hydrogel immobilization. Specifically, yttrium doping was found to induce lattice expansion in HTO, thereby broadening lithium ion (Li + ) diffusion channels and enhancing hydrophilicity, as evidenced by a reduction in contact angle from 31.8° to 17.4°. The modified yttrium-doped HTO (Y-HTO) was further incorporated into a semi-interpenetrating poly(vinyl alcohol)/poly(2-fluoroacrylic acid) (PVA/PFAA) hydrogel through UV-initiated in-situ polymerization. The PFAA component provided fluorine-mediated coordination sites and carboxyl-driven electrostatic gradients, which synergistically accelerated Li + transport. Concurrently, PVA facilitated the formation of hydrogen-bonded networks that immobilized Y-HTO particles and ensured mechanical robustness. The optimized Y-HTO-PVA/PFAA-30 % composite demonstrated a maximum Li + adsorption capacity of 52.36 mg·g −1 at pH 10. Cyclic tests exhibited a remarkable capacity retention of 89.5 % after 10 adsorption–desorption cycles with minimal Ti loss (0.26 %). This innovative strategy offers a sustainable solution for lithium extraction from high-salinity brines.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Guoke Zhao,Jie Sun,Gongqing Tang,Yang Zhang,Guoyuan Pan,Yiqun Liu
To address the critical challenge of lithium extraction from high Mg 2+ /Li + ratio brines, this study develops a high-performance separation membrane through synergistic regulation of binary and ternary acyl chloride monomers combined with a bis-quaternary ammonium salt surface modification strategy. Optimizing the ratio of terephthaloyl chloride (TPC) to trimesoyl chloride (TMC) facilitates the formation of a periodic stripe Turing structure on the piperazine-based polyamide membrane's surface, markedly increasing the effective permeation area and water flux. The study reveals that adjusting the TPC ratio finely tunes the polyamide network's crosslinking density, thereby affecting the size exclusion effect. Additionally, TPC incorporation, by diminishing surface carboxyl density, enhances the membrane's surface positive charge, significantly improving its Li + permeability and Mg 2+ rejection capabilities. The optimized TPC-20 membrane demonstrates exceptional ion selectivity, achieving a MgCl 2 rejection of 91.3 %, a LiCl rejection of 11.3 %, and a water flux of 61 LMH. Further enhancement via amino-terminated bis-quaternary ammonium salt (ATBAS) grafting achieves 98.7 % Mg 2+ rejection, a record Li + negative rejection of -37.3 %, and a Mg 2+ /Li + selectivity of 105.1. Extended testing for 120 h verifies the membrane's reliable performance, highlighting its potential for industrial application. This research provides an efficient and energy-saving membrane separation solution for lithium extraction from brines.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Chuanwei Gao,Guohong Kang,Zengqi Zhang,Zheng Chen,Chuanchuan Li,Jianjun Zhang,Bingqian Zhang,Jie Lu,Yifan Gong,Qingfu Wang,Guanglei Cui
Uncontrollable lithium dendrites caused by the kinetic mismatch between the rapid Li + deposition and the sluggish Li + diffusion, exacerbating capacity degradation and safety risks in lithium metal batteries. The commercially available separator hardly regulates Li + migration due to its heterogeneous pores and inferior electrolyte affinity. Herein, a polypropylene separator modified by lithiophilic sulfonated aramid fibers is proposed to suppress lithium dendrites by accelerating Li + transport kinetics. Specifically, the sulfonate group in the functionalized separator displays superior Li + affinity and effective suppresses anion migration. This enhances the Li + transference number to 0.72, which is two times of the unmodified separator. Additionally, the functionalized separator achieves an increased ionic conductivity of 4.45 × 10 −4 S cm −1 and a high critical current density of 7.7 mA cm −2 . The improved Li + transport kinetics effectively alleviates Li + depletion near lithium electrodes caused by the rapid Li + deposition on electrodes, ultimately suppressing the growth of lithium dendrites. Consequently, the Li||Li cells with as-prepared separators show superior cycling performances for 6000 h, and the 1.2 Ah LiCoO 2 pouch cell remains a capacity of 1.13 Ah after 100 cycles. This work provides a novel paradigm to promote the practical implementation of high-safety lithium metal batteries.
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