Advanced Science
·
2024
·Vol. 11
·期 41
·2405176
·
IF 14.3
Xiaoyu Zhao,Shuo Yang,Xiuli Song,Yushuang Wang,Hui Zhang,Muhan Li,Yanfei Wang
Extracting lithium resources from seawater and brine can promote the development of the new energy materials industry. The electrochemical method is green and efficient. Iron phosphate (FePO 4 ) crystal, with its 1D ion channel, holds significant potential as a primary lithium extraction electrode material. Li + encounters a substantial concentration disadvantage in brines, and the co-intercalation of Na + diminishes Li + selectivity. To address this issue, this work enhances the energy barrier for Na + insertion through prelithiation strategies applied to the 1D channels of FePO 4 crystal, thereby improving Li + selectivity, and further investigating the prelithiation effect with particle size and morphology control. The results indicate that the Li (4C-40%) FePO 4 // Activated carbon(AC) system enhances selectivity of lithium. The Li (4C-40%) FePO 4 with size diameter of 2500 nm demonstrates an energy consumption of 0.79 Wh mol −1 and a purity of 97.94% for lithium extraction at a unit lithium extraction of 5.93 mmol g −1 in simulated brine. Li (4C-40%) FePO 4 -nanoplates demonstrate the most optimal lithium extraction performance among the three morphologies due to their lamellar structure's short ion diffusion path in the [010] channel, favoring Li + diffusion. The diffusion energy barriers of Li + and Na + are calculated using Density Functional Theory (DFT) before and after prelithiation, showing good agreement with experimental results.
研究领域:
材料科学
·
能源材料
·
电化学
·
可持续能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Qian Zhang,Xinwen Li,Kang Chen,Ying Hu,Rongmei Liu,Guixiang Qian,Zhongliang Tian,Chao Yang
This study presents a FePO 4 -Zn/Pt hybrid power battery system designed for lithium extraction from salt lake brines. Initially, the FePO 4 -Zn battery is utilized for lithium intercalation to form LiFePO 4 , which is subsequently reassembled into a LiFePO 4 -Pt battery for lithium deintercalation. As a result, a Li + -rich aqueous solution, free from interfering metal cations, is obtained. The system eliminates the need for ion-exchange membranes, as the Pt electrode remains separated from the brine, thereby preventing contamination by impurity cations. When applied to a brine containing 0.25 g/L Li + and 73 g/L Mg 2+ , followed by desorption in a solution of 0.25 g/L Li + , only a minimal amount of Mg 2+ was transferred to the lithium chloride solution after two cycles, achieving effective lithium extraction and enrichment with an efficiency of 80.6%.
研究领域:
电化学
·
能源材料
·
环境工程
·
分离科学
·
无机化学
·
资源循环利用
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 14
·期 7
·2302761
·
IF 27.8
Jian Zhou,Chunxian Xing,Jiawei Huang,Yucheng Zhang,Guowei Li,Long Chen,Shuqiang Tao,Zhuoli Yang,Guangren Wang,Linfeng Fei
Lithium-ion batteries (LIBs) with LiFePO 4 (LFP) cathode materials have occupied a significant market share in state-of-the-art power storage systems and electric vehicles, yet the approaching “retiring wave” of these LIBs should be appropriately treated (i.e., recycling of spent LIBs). Current recycling strategies of degraded LFP materials largely direct on leaching of lithium elements, leaving the leached FePO 4 residual as a waste. Inspiringly, LiMn x Fe 1− x PO 4 material is considered one of the potential candidates for next-generation cathode materials because of its high electrochemical performance, extraordinary stability, and low cost. Herein, the direct upcycling of leached FePO 4 toward LiMn 0.25 Fe 0.75 PO 4 (LMFP) cathode material is demonstrated via a green, simple, and scalable mechanochemical pathway. The product features a gradient-doping of Mn, as well as a uniform carbon coating for LMFP particles. As a result, the LMFP cathode material delivers superior electrochemical performance; the capacity (161.3 mA h g −1 at 0.1 C), rate capability (90.1 mA h g −1 at 5 C), cycling stability (95.6% capacity retention after 800 cycles at 1 C), and energy density (≈15% increase as compared to LFP) are almost comparable with those of fresh materials. The as-established upcycling protocol offers a favorable reuse method for leached FePO 4 materials.
研究领域:
材料科学
·
储能技术
·
可持续化学
·
电池回收
·
电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Xu Zhang,Haowen Cui,Qinfang Li,Haian Xia
It is of great significance to develop an affordable and environmentally friendly method for producing 5-hydroxymethylfurfural (HMF) and furfural from inexpensive and abundant agricultural waste. Herein, FePO4 combined with organic acids such as mandelic acid were used as catalysts in a one-pot catalytic conversion of untreated wheat straw into HMF and furfural in a two-phase system of THF/H2O saturated by NaCl. H+, Fe(OH)2+, and Fe(OH)2+ originated from partially dissolved FePO4 in hot water together with organic acids provided Brønsted and Lewis acid sites for the cascade conversion of wheat straw. Whereas organic acid could regulate the concentrations of Lewis and Brønsted acid sites to promote the dehydration process of fructose and hinder the production of by-products and humins, boosting the yield of HMF and furfural. The response surface methodology (RSM) was used to optimize the reaction conditions. The highest yield of HMF was 62.9% at 200 °C and 120 min, which is higher than the reported yield of HMF using lignocellulose as raw material in the current literature. Furfural has also achieved a higher yield (93.9%) at 180 °C and 90 min. This study demonstrates the rationality of the deployment of lignocellulose to produce furan compounds by organic acids and FePO4, providing the possibility for efficient production of HMF and furfural from recalcitrant agricultural waste.
研究领域:
化学工程
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绿色化学
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生物炼制
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jie Ma,Lei Wang,Fei Yu,Xiaohu Dai
Due to its low energy consumption, capacitive deionization (CDI) is regarded as one of the most promising technologies in brackish water desalination. However, CDI has two drawbacks, namely, low deionization capacity and unavoidable parasitic reactions that limit its further development. Unlike the traditional CDI electrodes that store the ions in the electric double layer capacitors, faradic electrodes store ions at crystallographic sites or between the atomic planes, which could effectively address the issues mentioned above. However, obtaining low-cost faradic electrode materials with a high salt removal capacity for practical applications is still challenging. Here, we report a new material, mesoporous amorphous FePO 4 nanosphere@Graphene (FePO 4 @RGO) synthesized via a one-step hydrothermal method. Electrochemical experiments demonstrate that the formation of a mesoporous structure and covered by graphene can address the drawbacks of pure FePO 4 for electroconductivity and ion diffusion rates. When used in desalination, the novel design enhances the desalination capacity, and the rates increase by 60% (50.13–85.94 mg/g) and 180% (0.079–0.24 mg/g/s), respectively, while energy consumption decreases by 25%. The production cost of the material was calculated, and implies that this material has potential for use in large-scale desalination.
研究领域:
环境科学
·
材料科学
·
水处理
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Tao Han,Xiaoping Yu,Yafei Guo,Mingli Li,Ji Duo,Tianlong Deng
As a unique and indispensable element in modern battery and energy industries, the recovery of lithium has attracted wide attention worldwide. In this work, the recovery of low concentration of Li + in geothermal water was carried out by a green and novel FePO 4 /K 2 NiFe(CN) 6 [FPO/KNiFC] electrochemical ion pump technique. Different K 2 MFe(CN) 6 (M = Cu, Co, or Ni) was synthesized and used to construct an electrochemical ion pump with FePO 4 . It was found that K 2 NiFe(CN) 6 has excellent electrochemical properties, and the recovery of Li + is mainly restricted by the insertion capacity and rate of the FePO 4 electrode. This problem was successfully solved by the modification of electrode using multiwalled carbon nanotube . Even though the optimized ion pump system has a low single insertion capacity for low concentrations of Li + , a cycle extraction method was developed and successfully realized high-effective recovery of Li + from geothermal water. Subsequently, a multi-stage extraction device was designed and proposed for the continuous recovery of low concentrations of Li + .
研究领域:
环境科学
·
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Particuology
·
2025
·
IF 4.3
Jing Lao,Zihan Mu,Yangcheng Lu
A novel high temperature oxidation precipitation method for synthesizing high-purity nano-sized ferric phosphate was proposed. We systematically investigated the impact of reaction temperature on the properties of the ferric phosphate product and its slurry. The study found that the FePO 4 obtained by the high-temperature precipitation method consisted of amorphous nanoparticles with a narrow size distribution around 30 nm. Increasing the reaction temperature did not affect the purity or crystal structure of the particles, but it reduced the viscosity and solid content of the slurry, beneficial for improving the solid-liquid separation efficiency in subsequent production processes. Characterization of products obtained at different reaction temperatures using FTIR, XPS, and ICP-OES revealed that elevated temperatures decreased the content of hydroxyl groups on the surface of the ferric phosphate particles, weakening the adsorption of metal ion impurities on the particle surface and the interaction between particles. The LiFePO 4 @C material synthesized using the nano FePO 4 product obtained by the high-temperature oxidative precipitation method as a precursor exhibited good rate performance (137.1 mAh g −1 at 5 C). This high-temperature oxidative precipitation method might enable controllable, continuous, and easily scalable production of nano-sized FePO 4 production.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xueliu Wang,Jin Long,Zixiang Guo,Yi Xing,Wenge Jiang
The quality of iron(III) phosphate (FePO 4 , FP), a critical precursor for lithium iron phosphate (LiFePO 4 , LFP) cathodes, is paramount to the electrochemical performance of LFP. However, conventional industrial FP often suffers from irregular morphology, broad size distribution, and severe agglomeration, which limit LFP performance. To address this issue, we developed a temperature-mediated liquid-phase precipitation method for the controllable synthesis of FP precursors and systematically investigated how the precipitation temperature influences the properties of the precursors and, in turn, determines the electrochemical performance of the resulting LFP material. The optimized FP obtained at 80 °C exhibits uniform spherical particles, a narrow size distribution, excellent dispersibility, a near-theoretical Fe/P ratio, and high purity. Consequently, the derived LFP cathode demonstrates enhanced crystallinity, reduced particle size, and improved dispersion, leading to superior electrochemical properties. It delivers an initial discharge capacity of 161.63 mAh·g −1 at 0.1C and maintains 141.48 mAh·g −1 after 100 cycles at 1C, corresponding to a 97.20% capacity retention. The material also showcases outstanding rate performance, high reversibility, and low charge-transfer resistance. This work provides a robust and scalable strategy for producing high-quality FP precursor and high-performance LFP cathodes, contributing to the advancement of lithium-ion battery technology.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Wenxin Xia,Huan Ye,Guoxing Ren,Wenqing Zhao,Jiayu Hao,Wanwan Hong,Wenhua Xu,Dongfu Liu,Qiqi Huang,Jianwei Zhao,Songwen Xiao,Zhongwei Zhao
Na2FePO4F (NFPF) is a promising cathode material for sodium-ion batteries, yet it is still confronted with a cost–performance trade-off. In this study, a low-cost preparation method of high-performance NFPF cathode materials was proposed via an Al-doping strategy, using commercial FePO4 without premodification. The effect of the Al content on the crystal structure, sodium-ion diffusion kinetics, and electrochemical performance of NFPF was investigated in detail. X-ray diffraction and Rietveld refinements confirmed the high-purity phase. Na1.98Fe0.98Al0.02PO4F/C (NFPF-Al0.02) showed an excellent rate capability (57.7 vs 44.5 mAh·g–1 at 5.0 C) and better cycling stability (93.6% vs 66.7% after 100 cycles at 0.5 C) than the undoped NFPF sample. NFPF-Al0.02 also exhibited an excellent capacity retention of 84.6% after 1000 cycles at 5.0 C. GITT, CV, and EIS results revealed an order-of-magnitude increase in the sodium-ion diffusion coefficient of Al-doped NFPF-Al0.02 compared to that of pristine NFPF. A cost–performance comparison between this work and previous studies was conducted. In summary, this innovative method, which can produce high-performance NFPF cathode materials at low cost, is anticipated to significantly promote the commercialization of NFPF-based sodium-ion batteries.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xinyue Zhao,Mingwu Luo,Kunyao Peng,Zhibo Zhang,Bin Cheng,Bingbing Wang,Changbao Zhu,Xingbin Yan,Kaiyuan Shi
The dramatic growth of the sodium-ion battery market evokes a high demand for high-performance cathodes. In this work, a nanosized amorphous FePO4@rGO composite is developed using coprecipitation combined with low-temperature hydrothermal synthesis, which registered a surface area of 179.43 m2 g–1. The composites maintain three-dimensional mesoporous morphology with a pore size in the range of 3–4 nm. Uniform distribution of amorphous FePO4 allows a reversible capacity of 175.4 mA h g–1 at 50 mA g–1 while maintaining a stable cycle life of 500 cycles at 200 mA g–1. The amorphous FePO4@rGO, obtained by energy-efficient synthesis, significantly improved the rate performance compared to the crystalline material prepared at high temperatures. Cyclic voltammetry tests reveal that the fast reaction kinetics can be attributed to the pseudocapacitive behavior of the electrode. In addition, we demonstrated the promise of FePO4@rGO cathodes for low-temperature sodium-ion batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Wei Xu,Qingguo Chen,Wanjun Zhang,Xiaofeng Zhao,Weipeng Wang
The rhabdophane–monazite system has been proposed as a promising material for the immobilization of actinides from radioactive waste streams due to its potential for lower processing costs. Assessing the influence of impurities present in such waste streams on monazite properties is therefore critical, particularly given that rhabdophane precipitation is frequently accompanied by the co-formation of FePO 4 ·2H 2 O as a common secondary phase. This study systematically investigates the effects of Fe 3+ incorporation on the sintering behavior and chemical stability of monazite ceramics, with particular focus on the solubility limit of Fe 3+ and the diffusion dynamics of the molten FePO 4 phase. The results reveal that trace amounts of Fe 3+ (up to 2 mol%) can be incorporated into the monazite lattice at 1200 °C via solid-state diffusion during grain growth. When the Fe 3+ doping level exceeds 2 mol%, excess FePO 4 seg = regates at grain boundaries, leading to microcrack formation and significant reductions in density and hardness. Furthermore, leaching experiments demonstrate that Fe 3+ doping below 2 mol% increases the leaching rate of Th 4+ . In contrast, the presence of a secondary FePO 4 phase (>2 mol%) at grain boundaries promotes preferential dissolution, thereby accelerating localized corrosion and the co-leaching of Th 4+ and La 3+ .
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Zhongyu Wang,Yangcheng Lu
A facile strategy to construct composites of amorphous FePO4 (a-FePO4) nanoparticles and carbon additives with high dispersion and tap density was developed in this work, in which the a-FePO4·2H2O nanoparticles were handled without drying until being mixed with carbon nanomaterials in water to assure high dispersion of a-FePO4·2H2O nanoparticles and carbon nanomaterials; the controlled sedimentation was exploited by rapid adjustment of the pH value via a micromixer to obtain the composites that are easy to manipulate; the composites were endowed with high tap density after simple ball-milling. Using this strategy, hybrid carbon additives were uniformly introduced into the a-FePO4 cathode to form a hierarchical 3D conductive network. Through proper distribution of these components to provide both long- and short-range electron pathways, the reversible discharge capacity could reach 175.6 mA h g–1 at 0.1 C and 139.1 mA h g–1 at 5 C. The composites of a-FePO4, carbon black, and carbon nanotubes (CNT) exhibited the distinct advantages of low cost and excellent rate capacity over the composites of a-FePO4 and CNT, indicating the importance of optimizing the hierarchical structure of cathode composites. The high effectiveness of this construction strategy to build a hierarchical conductive network is also promisingly used for the development of other functional nanocomposites.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）