JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Yunxing Su,Shuai Liu,Jing Shi,Minghua Huang,Zhicheng Shi,Huanlei Wang,Ting Wang
Lithium metal battery has shown extraordinary promise for electrochemical energy storage due to high theoretical capacity and low reduction potential. However, its energy density improvement and commercial application are seriously limited by the inevitable formation of dendrites and dead lithium and the infinite change of electrode volume during repeated charge-discharge processes. In this work, a three-dimensional Cu foam decorated with a lithophilic sulfide doped carbon layer (Cu 1.81 S-C@CF) is used as an advanced 3D host for long-life lithium metal anode . The average current density is effectively reduced and the volume change is accommodated by the three-dimensional porous structure. Moreover, the effects of different reaction temperature and time on surface morphology and structure of lithophilic layer on 3D current collector is also systemically studied. The Cu 1.81 S-doped carbon layer prepared at a deposition temperature of 800 °C for 2 h (Cu 1.81 S-C@CF-800–2) exhibits excellent lithium dendrite inhibition ability. The symmetrical battery with Cu 1.81 S-C@CF-800–2 as a lithium host could operate for over 6000 h with a low overpotential (about 14.9 mV) without intense voltage fluctuation. Moreover, the Li@Cu 1.81 S-C@CF-800–2 full battery matched with LiCoO 2 (LCO) cathode exhibits a high initial capacity of 142.78 mAh g −1 and excellent capacity retention of 96.4% at 0.2 C, with an average CE of 99.6% over 120 cycles. This work not only successfully prepares a long-life lithium metal anode, but also provides a new strategy for preparing and optimizing lithophilic layer of 3D current collectors.
研究领域:
材料科学
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电化学能源存储
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Ruzhen Zhao,Ziwen Ying,Hao Sun,Qifeng Wei,Xiulian Ren
Lithium extraction has become a hot topic because of global efforts to control carbon emissions. However, the efficient separation of Li/Na is a great challenge. In this study, the lithium carbonate precipitation mother liquor with Li + content of 1.7910 g/L and Na + content of 111.2438 g/L was used as the raw material solution. Due to its high Na/Li ratio, we found that the affinity of nonylphenol oxygen anion with Li + is stronger than that with Na + through quantum chemical analysis. And through the optimization of the effects of saponification degree, pH, temperature, and phase ratio, after twelve rounds of a five-stage countercurrent extraction, the E Li (%) reached 99% and the maximum β Li/Na reached 114799.73. After scrubbing with 0.5 mol/L HCl + 0.5 g/L LiCl solution and stripping with 2 mol/L HCl solution, Li + and Na + could be effectively separated. This study proved that nonylphenol oxygen anion had a significant effect on the extraction of Li + , and could effectively separate Li + from Na + , which brings a new idea for the treatment of high Na/Li solution.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
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.
研究领域:
材料科学
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能源工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2019
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IF 3.218
Zheng-Guang Hu,Zhi-Yuan Tan,Zhong Lin,Jun Chen,Fang Sun,Xuyao Tang,Rui-Ting Zheng,Yong-Chong Chen,Guo-An Cheng
Si is one of the most attractive anode materials because of its extremely high theoretical capacity. In this study, we find that the (111) plane of crystalline Si in the anode is still present after 100 cycles and infer that it is the intercalation site of Li + ions. We believe that Li + ions are inserted into the tetrahedral sites of crystalline Si, and the (111) plane of Si collapses; meanwhile, expansion parallel to 〈220〉 crystal orientation occurs. After full lithiation , the crystalline Si is converted to amorphous silicon . In a Si/ composite anode, although the addition of amorphous carbon may improve the cycling performance of Si anode, the activation process is prolonged as the amount of amorphous carbon increased. We determine that amorphous carbon may reduce the diffusion of Li + , which increases the overpotential and results in the lower formation of the saturated Li/Si alloy.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Ze-Hang Chen,Lei Xu,Chen Chen,Zong-Bin Lv,Ming-Lai Fu,Baoling Yuan
Spent lithium-ion batteries (LIBs) contain a significant amount of valuable metals, representing a precious secondary resource. Solvent extraction is an effective method for recovering valuable metal ions from these batteries. This study proposes the use of a traditional extractant, Cyanex 272, combined with the ionic liquid Cyphos IL 101, to extract and recover leachate from lithium cobalt oxide (LiCoO 2 ) batteries. With an organic-to-aqueous (O/A) phase ratio of 1:1 and a temperature of 25 °C, 97.12 % of Co was extracted, only 2.37 % of Li were co-extracted. The separation factor of Co and Li ( β Co/Li ) was 1390.1. Stripping was accomplished using pure water, achieving nearly 100 % efficiency, with the extractant demonstrating excellent recyclability and stability. Due to the low viscosity of the organic phase, the extraction system exhibits excellent performance even at room temperature (25 °C), eliminating the need for additional heat input. Using Fourier-transform infrared spectroscopy (FTIR), Ultraviolet-visible spectroscopy (UV-Vis), and Nuclear Magnetic Resonance (NMR), it was confirmed that a tetrahedral Co-Cyanex 272 complex is generated during the cobalt extraction process, following a cation exchange mechanism. Concurrently, Cyphos IL 101 facilitates the extraction of Co 2 + by transferring them as [CoCl 4 ] 2− complexes from the aqueous phase into the organic phase. The novel extraction system reduces raw material costs for recycling spent lithium cobalt oxide batteries. This research highlights the feasibility of solvent extraction methods for processing spent LIBs, offering an efficient approach to recover lithium cobalt oxide batteries.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
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2022
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IF 20.831
Chen Wu,Mingli Xu,Chengyi Zhang,Lang Ye,Kanglong Zhang,Hengjiang Cong,Lin Zhuang,Xinping Ai,Hanxi Yang,Jiangfeng Qian
The global lithium-ion battery recycling market is witnessing rapid growth considering the limited mineral resources and environmental sustainability. However, the conventional destructive recycling technology, mainly referred as pyrometallurgy and hydrometallurgy, cannot show obvious advantages in the recovering of low-value cathode (i.e. LiMn 2 O 4, abbreviated as LMO), either judged from the perspective of environment or economy. Herein, we develop a facile and cost-effective chemical lithiation strategy to direct regenerate spent LMO cathode, and further investigate the efficacy of our technology for industrial-scale applications. Pyrene-Li compound, a highly reductive reagent capable of donating both e − and Li + , is adopted as the chemical lithiation agent to heal the Li deficiency in the degraded LMO cathode. Both the Li-deficient LMO model compounds prepared from acid delithiation method and the real degraded LMO harvested from commercial cells can be restored as original with comparable long-term stability as the pristine LMO cathode and even superior rate capability. Life-cycle analysis demonstrates that our approach is superior to conventional metallurgies because of its high economic profitability (2.78 $/kg cell) and minimal environmental impact (527 g GHG /kg cell), thus providing a brand new perspective for the recycling of low-value cathodes.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
DOI
高影响因子
Green Energy & Environment
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2024
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IF 10.7
Wei Lu,Anshun Zhao,Qiuxu Chen,Sihan Liu,Mingxi Yu,Zihao Wang,Ze Gao,Xue Zhao,Guiru Sun,Ming Feng
An artificial solid electrolyte interphase (SEI) with lithiophilic sites and chemical bonds anchoring lithium polysulfides (LiPSs) has been developed as a potential solution to protect the lithium (Li) metal anode of Lithium−sulfur (Li–S) batteries. This strategy aims to guide consistent Li deposition and relieve lithium corrosion. Herein, the evolution process of lithiophilic sites based on aluminum fluoride (AlF 3 ) in an artificial SEI is disclosed in Li–S batteries with metal−based lithiophilic sites. The polyester polymer (PMMA and PPC)/AlF 3 artificial SEI (MPAF−SEI) was homogeneously anchored on Li anode by in−situ polymerization. The conversion of AlF 3 into Li–Al and LiF lithiophilic sites effectively reduce the Li nucleation overpotential and prevents the formation of Li dendrites. At the same time, the polymer can anchor LiPSs by chemical bonds and prevents Li corrosion. The optimized MPAF−SEI protected Li demonstrates excellent stability for over 3000 h at a capacity of 1 mAh cm −2 in Li || Li symmetric cells. The Li–S battery with low N/P (4) exhibits a capacity of 532.6 mAh g −1 over 300 cycles lifespan at 0.5 C.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
FLUID PHASE EQUILIBRIA
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2017
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IF 2.473
Xu Zhao,Haihong Wu,Mengshan Duan,Xiaocui Hao,Qiwei Yang,Qi Zhang,Xiping Huang
Ionic liquids (ILs) have been proposed as promising extractants to broaden the potential utility of liquid–liquid extraction process for lithium, but developing an attractive IL from numerous available ILs remains challenging. In this work, a rapid preliminary predicting and screening method based on COSMO-RS was proposed. The design strategy was to collocate anions that had intensive affinity to lithium ion with high hydrophobic cations. Based on it, a series of candidate ILs were prepared and characterized by 1 H and 13 C NMR spectroscopy, including [P 4444 ]-based and [N 4444 ]-based ILs with phosphate, phosphinate and long-chain carboxylate anions. The further extraction experiments indicated that the tetrabutylammonium mono-2-ethylhexyl(2-ethylhexyl)phosphate ([N 4444 ][EHPMEH]) had the highest Li + extraction efficiency. The extraction mechanism was investigated by slope analysis method and ATR-IR spectroscopy. It was determined that every Li + associated with 1.33 molecule [N 4444 ][EHPMEH] to form the extracted species. The stripping study showed that the Li + was able to be stripped by only 0.5 mol/L HCl without additional agents. The extraction experiments of Li + from multi-metal-ion solution were also carried out, and the distribution ratio of Li + was nearly twice those of Na + , K + , and Rb + , indicating that [N 4444 ][EHPMEH] was available to separate lithium ion from the other alkali metal ions.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Ming Jin,Rui Gao,Guiru Sun,Haibo Li,Xiangxin Xue,Chaoqun Qu,Nan Li,Yuting Zhang,Zhao Wang,Ming Feng
Lithium sulfide (Li 2 S) compounds as cathode materials for Lithium-sulfur (Li-S) battery have attracted more and more attention recently because of its high specific capacity, lower volume expansion and higher thermal stability of Li 2 S. However, high electrochemical barrier of the Li 2 S cathode and “shuttle effect” from S species on anode still block the development of Li-S batteries. Herein, LiFePO 4 (LFP) is employed as dual-function separator modifier to establish hybrid cathode. The modified separator will reduce overpotential for effective and durable sulfur redox reactions at the same time, it can also efficiently immobilize the lithium polysulfides (LiPSs) through the Lewis acid-base interaction of LiPSs and LFP. The battery systems based on the as-developed LFP modified separator exhibit an excellent rate capability, high sulfur utilization and outstanding cycling performance. The capacity retention can reach 83.9% after 400 cycles at 0.2 C, and the capacity can reach 594 mAh g −1 at up to 2 C. Current facile and low-cost strategy to modified Li-S battery systems on one hand offers an effective pathway to enhance electrochemical performance, on the other hand inspire new strategies on reducing the activation barrier of Li 2 S for improved sulfur electrochemistry as well.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Mingqiang Cheng,Juanjian Ru,Qibo Zhang,Yixin Hua,Cunying Xu,Yinghua Zhang,Ding Wang
The boom of the lithium-ion battery (LIB) industry is dialectically correlated with a scarcity of raw resources, particularly lithium (Li), so the recovery of critical metals from spent LIBs has become very essential for resource sustainability. Here, a new strategy for the one-step direct recovery of Li from spent LIB cathode active materials via water-based deep eutectic solvents (DESs) is put forward, together with the recycling and reuse of the DES. Without any reagent and pretreatment, Li2C2O4 can be directly and preferentially precipitated from the H2O-based choline chloride-oxalic acid (ChCl-OA) DES, and CoC2O4·2H2O is obtained easily from the residual Co-rich leachate by adding H2O. The leaching efficiencies are nearly 100% for Li and Co, and the recovery efficiencies reach 91.2 and 94.6%, respectively. The recovery mechanism of Li and Co is clarified based on the coordination-guided design between Li+ and C2O42–, which enables the precise separation of Li and Co. It is crucial to strictly control the H2O content in the DES, which is always being ignored, serving as a diluent and complexant, avoiding the solidification of the DES, and realizing the preferential precipitation of Li. The optimization of the leaching and recovery processes is comprehensively investigated as well as the middle-sized experiments in the 2 L leaching level, and a leaching kinetic model is established. The strategy proposed here offers a promising possibility for the direct and preferential recovery of Li from spent LIBs, promoting the development of high economic efficiency and environmental protection of the battery recycling market.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Li He,Yingjie Cheng,Qiuju Li,Hainan Zhao,Meiling Wang,Xuejian Shi,Xiaoxin Zou,Yizhan Wang,Yingjin Wei
The shuttling and sluggish conversion kinetics of lithium polysulfides (LPSs) seriously hinder the cycling performance of Li-S batteries. To address this issue, a NbB 2 @CC cathode/separator interlayer is designed by dispersing NbB 2 nanoparticles in a textile carbon cloth (CC). NbB 2 has stronger adsorption ability than CC, which can effectively capture the dissolved LPSs in the electrolyte. Then, under the catalysis of NbB 2 , the reaction kinetics of LPSs is greatly facilitated. Benefiting from these advantages, the Li-S cell can offer a high discharge capacity of 735.2 mA·h·g −1 at 1C, with very small capacity fading in 800 cycles. It also shows excellent low-temperature performance, which can deliver a stable discharge capacity of 802 mA·h·g −1 at −10 °C. Moreover, a high areal capacity of 7.34 mA·h·cm −2 is achieved for the Li-S cell with a high sulfur loading of 9.45 mg·cm −2 and low electrolyte/sulfur ratio of 6.34 µL·mg −1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2017
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IF 4.798
Ning Wang,Naiqin Zhao,Chunsheng Shi,Enzuo Liu,Chunnian He,Fang He,Liying Ma
Lithium-sulfur (Li-S) batteries have been recognized as one of the promising next-generation energy storage devices owing to their high energy density, low cost and eco-friendliness. As for cathode’s performance, the main challenges for developing highly-efficient and long-life Li-S batteries are to retard the polysulfides diffusion into electrolyte and the reaction with metallic lithium (Li). Especially, the safety issues, derived from metallic Li in anode, must be overcome. Herein, we fabricated lithium sulfide@porous carbon composites (Li 2 S@PC) by an in-situ reaction between the lithium sulfate (Li 2 SO 4 ) and the pyrolytic carbon from glucose. The nanosized Li 2 S particles were uniformly distributed in the carbon matrix, which not only significantly improve electronic conductivity of the electrode but also effectively trap the dissolved polysulfides. Furthermore, on the basis of the graphite’s electrochemical features in ether-based electrolyte, we assembled graphite-Li 2 S@PC full cells using the obtained Li 2 S@PC composites as the cathode, graphite as the anode and the DOL/DME with LiNO 3 additive as the electrolyte. A unique strategy was proposed to activate the full-cells in descending order using constant voltage and current to charge the cut-off voltage. This Li-S full cell exhibits stable cycling performance at 0.5 C over 100 cycles. Because graphite-Li 2 S batteries are suitable to the lithium-ion batteries industry, our preliminary results here will shed a new light on the cell design and industrial production.
研究领域:
材料科学
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电化学
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能源存储
✓ 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）