ACS Applied Energy Materials
·
2019
·
IF 0
Jing Yang,Zhen Huang,Peng Zhang,Gaozhan Liu,Xiaoxiong Xu,Xiayin Yao
Developing solid electrolytes with high lithium-ion conductivity is crucial to realize high-performance all-solid-state lithium batteries. The substitution of ions with larger ionic radius can enlarge the Li+ migration tunnels and therefore enhance the lithium-ion conductivity. In this work, Ti4+ is employed to partially replace Ge4+ in Li2O–Al2O3–GeO2–P2O5 glass-ceramics electrolyte in order to improve its conductivity. The highest total lithium-ion conductivity of 1.07 × 10–3 S cm–1 at room temperature is obtained from Li1.5Al0.5Ge1.5(PO4)3-7.5 wt % TiO2 sample sintered at 900 °C for 6 h. The bulk and grain boundary conductivities are 1.67 × 10–3 S cm–1 and 2.99 × 10–3 S cm–1, respectively, which are superior than that of the pristine Li1.5Al0.5Ge1.5(PO4)3 counterpart. Both bulk and grain boundary conductivities of the sample have been significantly improved, which could be attributed to the increase of bottleneck sizes of the Li+ migration tunnels and the decrease of grain boundary area. All-solid-state lithium batteries employing LiFePO4 as cathode and solid electrolyte as separator and ionic conductor are assembled. A reversible capacity of 132.3 mAh g–1 is delivered after 200 cycles under a current density of 0.1C with a capacity retention ratio of 91.1%, showing the solid electrolyte is ideal for all-solid-state lithium-battery applications.
研究领域:
材料科学
·
固体离子学
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储能技术
·
电化学
·
陶瓷与玻璃
✓ 已验证
DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Pengfei Wang,Lianyi Shao,Haoxiang Yu,Jinping Dong,Ting-Feng Yi,Shangshu Qian,Lei Yan,Peng Li,Miao Shui,Jie Shu
In this work, we propose a facile solid state reaction to prepare Li 3-x Na x V 2 (PO 4 ) 3 /C (0 ≤ x ≤ 3), which are rarely explored as possible cathode materials in sodium-ion batteries. Their phase composition, surface morphology and electrochemical property are described and compared in detail by using various physical/chemical methods. Seen from phase analysis results, it is known that Li 2.5 Na 0.5 V 2 (PO 4 ) 3 is a three-phase mixture (monoclinic Li 3 V 2 (PO 4 ) 3 , rhombohedral Li 3 V 2 (PO 4 ) 3 and rhombohedral Na 3 V 2 (PO 4 ) 3 ). In contrast, Li 2 NaV 2 (PO 4 ) 3 , Li 1.5 Na 1.5 V 2 (PO 4 ) 3 , LiNa 2 V 2 (PO 4 ) 3 and Li 0.5 Na 2.5 V 2 (PO 4 ) 3 are two-phase mixtures consisting of rhombohedral Na 3 V 2 (PO 4 ) 3 and rhombohedral Li 3 V 2 (PO 4 ) 3 . Evaluated as cathode materials in half-cells, Li 3-x Na x V 2 (PO 4 ) 3 /C (0 ≤ x ≤ 3) can deliver the initial reversible capacities of 94.3 mAh g −1 (x = 0.0), 103.6 mAh g −1 (x = 0.5), 115.1 mAh g −1 (x = 1.0), 112.7 mAh g −1 (x = 1.5), 99.6 mAh g −1 (x = 2.0), 94.0 mAh g −1 (x = 2.5) and 91.9 (x = 3.0) mAh g −1 , respectively. After 45 cycles, the reversible capacities of 88.9 mAh g −1 (x = 0.0), 88.2 mAh g −1 (x = 0.5), 80.6 mAh g −1 (x = 1.0), 99.6 mAh g −1 (x = 1.5), 87.2 mAh g −1 (x = 2.0), 72.7 mAh g −1 (x = 2.5) and 72.3 mAh g −1 (x = 3.0) can be still kept for these samples. The electrochemical results suggest that Li/Na co-existence in M 3 V 2 (PO 4 ) 3 /C may be beneficial to enhance the electrochemical performance . As a result, Li 1.5 Na 1.5 V 2 (PO 4 ) 3 /C shows the best sodium storage capability as cathode material in sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
高影响因子
Journal of Hazardous Materials Advances
·
2026
·
IF 9.1
Jiawei Li,Gaiyuan Chen,Min Chen,Zhengxin Wu,Yong Liu
Uranium (U) tailings, generated as byproducts of U mining and milling, pose significant disposal challenges owing to their large volume, radiotoxicity, and chemically heterogeneous mineral composition. Herein, we report a microwave–assisted route for preparing (1– x )Sr 0.5 Zr 2 (PO 4 ) 3 – x CePO 4 ( x = 0, 0.2, 0.4, 0.6, 0.8, 1) [strontium zirconium phosphate(SZP)–cerium phosphate(CP)] composite ceramics while incorporating real U tailings as a Si/Al–rich secondary waste component. The raw–batch U–tailing loading was 39.7–47.0 wt% for the designed compositions and 45.4 wt% for the optimized SZP–CP–0.8 batch. Compared with reagent–derived SZP–CP systems, the present work focuses on the practical utilization and stabilization of actual U tailings during ceramic waste−form preparation. The phase assemblage, microstructure, density, Vickers hardness, Ce surface valence, and 42–day PCT chemical durability were evaluated. The optimized SZP–CP–0.8 ceramic exhibited a density of 4.32 g ·cm –3 , a porosity of 0.12%, and low normalized leaching rates after 42 days, with Sr, P, and Si of approximately 10 −4 g ·m −2 ·d −1 , Ce of approximately 10 –7 g ·m –2 ·d –1 , and Zr of approximately 10 –8 g ·m –2 ·d –1 , supporting the feasibility of microwave–sintered SZP−CP composites for treatment and disposal of U tailings and simulated divalent/tetravalent radionuclides. Quantitative phase refinement, statistically representative grain–size analysis, replicate–vessel leaching uncertainty, and radionuclide–specific leaching of native trace elements from tailings are identified as future work rather than over interpreted from the present dataset.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2022
·
IF 4.889
Nan Jiang,Long Chen,Yitao Wang,Hao Jiang,Yanjie Hu,Chunzhong Li
Sodium-ion batteries have been extensively studied due to their high safety and high natural abundance characteristics. Na 3 V 2 (PO 4 ) 3 (NVP) cathode materials, which have extraordinary rate performance and cycle stability, have become among the most promising cathode materials for commercialization. However, due to their low conductivity problem, it is still a serious challenge to develop a nanocrystalline and uniform conductive frame structure. This work reports a confinement reaction strategy derived from the chelation reaction, which can successfully realize electrode materials with adjustable internal NVP grains. The obtained ultrasmall grained carbon frame material showed to have ultrahigh rate performance, and it could reach 101 mAh g −1 at 100C and 100 mA h g −1 after 1800 cycles at 10C rate (capacity retention rate 99%). Moreover, it showed the characteristics of excellent low-temperature performance, and no capacity degradation at − 20 °C after 1000 cycles.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Feng Chen,Xinqi Zhu,Weilong Dai,Congcong Yao,Junchao Qian,Zhigang Chen,Chengbao Liu
The high nickel cathode LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 (combination of NCM and NCA) coated with the Li + conductor Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 in various mass fractions was prepared via using the typical sol-gel process. The LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 after the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 covering demonstrated the similar crystal structure and particle morphology in comparison with the bare cathode. The electrochemical test results indicated the superior rate capabilities and cycling performances were acquired for the coated cathodes due to the presence of the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 film on the surface of LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 . The 2 wt% Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 covered LiNi 0.83 Co 0.06 Mn 0.06 Al 0.05 O 2 exhibited the greatest electrochemical performance with a large cycle retention rate of 90.9% over 300 cycles at 45 °C, rate capacity of 139.8 mAh g −1 at 5 C current density, and a high capability of 126.5 mAh g −1 at − 30 °C, superior than those (80.9%, 99.8 mAh g −1 , 71.3mAh g −1 accordingly) of the bare cathode. In addition, the safety and environmental reliability tests of pouch batteries suggested the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 film on the surface of cathode acted as a protective layer to promote the stability for application.
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 10
·4631-4639
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IF 2.961
Huang Hong-bo,Liu Cai-ling,Yang Yue,Luo Shao-hua
Na 3 V 2 (PO 4 ) 3 with NASICON structure is regarded as a hopeful cathode in sodium-ion batteries (NIBs). Nevertheless, the immanently inferior electronic conductivity significantly restricts its electrochemical performance and practical application. In this work, a facile solid-state sintering approach employing citric acid as both the reduction agent and carbon source has been developed to prepared Na 3 V 2 (PO 4 ) 3 /C composite. The influence of different sintering temperatures on the structure, morphology, and electrochemical performance of Na 3 V 2 (PO 4 ) 3 /C for NIBs was systematically investigated. The results indicate that the Na 3 V 2 (PO 4 ) 3 /C sample calcined at 850 °C (NVP/C-850) presents the best electrochemical property among the as-obtained four NVP/C samples studied. The optimized NVP/C-850 composite exhibits a reversible capacity of 117.4 mAh/g at 0.2 C, and after 100 cycles, capacity retention of 94.7% was kept. Besides, among the four electrodes, NVP/C-850 electrode exhibited smallest resistance and highest Na + diffusion coefficient. Thus, the outstanding results demonstrate potential application of the NVP/C for NIBs.
✓ 已验证
产品关联
DOI
高影响因子
POWDER TECHNOLOGY
·
2018
·
IF 3.23
Weiwei Chu,Zhenzhen Lu,Ruiqin Tan,Shihui Tang,Wei Xu,Weijie Song,Junhua Zhao
In this work, β-SrHPO 4 , Sr 3 (PO 4 ) 2 , and Sr 5 (PO 4 ) 3 (OH) (SrHAp) powders were successfully prepared by a controllable hydrothermal method and were utilized in removal of lead ion (Pb 2+ ). The effects of pH value, contact time and initial ion concentration on the immobilization of Pb 2+ were investigated systematically. Results showed that β-SrHPO 4 exhibited a capacity of 1438 ± 45 mg/g for Pb 2+ , while Sr 3 (PO 4 ) 2 and SrHAp showed values of 1223 ± 45 mg/g and 543 ± 45 mg/g respectively under the optimum conditions. The XRD , SEM and EDX results revealed that the mechanism of Pb 2+ immobilization by β-SrHPO 4 , Sr 3 (PO 4 ) 2 and SrHAp was mainly due to a process of dissolution and precipitation in the acidic solution. Comparing the immobilization behavior and capacities of β-SrHPO 4 , Sr 3 (PO 4 ) 2 and SrHAp for Pb 2+ removal, it is shown that β-SrHPO 4 is an effective and eco-friendly material for the removal of Pb 2+ from acidic aqueous solutions among strontium phosphates materials.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Xudong Wang,Lei Fu,Yun Huang,Jiepeng Chen,Jiapin Liu,Jie Xiao,Xinyan Xiang,Wenping Zeng,Siming Huang,Xing Li,Mingshan Wang,Bingshu Guo,Yuanhua Lin,Haijun Cao
Sodium super ion conductor (NASICON) structure materials such as Na 3 V 2 (PO 4 ) 3 (NVP) are suitable cathodes for Sodium-ion batteries (SIBs) due to their open three-dimensional structure that can provide fast Na + migration channels. However, low inherent conductivity and capacity restrict the application of NVP. In this paper, NASICON-structured Na 2.25 V 1.25 Ti 0.75 (PO 4 ) 3 @Y (NT 0.75 VP@Y) constructed by yeast with the biological template method is successfully synthesized. Theoretical calculations show that the spherical structure of bio-derived carbon formed after calcination produces a local compressive strain that leads to a uniform distribution of electronic states and stronger adsorption of Na + and NaClO 4 , thus enhancing the electronic and ionic conductivities of the material. NT 0.75 VP@Y exhibits a discharge specific capacity of 135 mAh g −1 at 0.2 C and a capacity retention rate of 94.8 % after 500 cycles. Finally, the full cell and the pouch cell are successfully assembled to verify the practicality of NT 0.75 VP@Y. This paper provides a simple, low-cost, and environmentally friendly way to synthesize high-performance cathode materials for SIBs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Mengyue Liu,Kexin Wan,Xinmiao Zhang,Mingkun Wang,Dawei Yang,Jishi Wei,Kun Chang,Hongwei Tang
NASICON-type cathodes as promising candidates have attracted more and more attention, and Na 3 V 2 (PO 4 ) 3 is one of the outstanding representatives. In particular, it can tolerate complex interface reaction processes during the Zn 2+ insertion/desertion in the aqueous environment. However, existing three-dimensional channels in the intrinsic Na 3 V 2 (PO 4 ) 3 always hardly play to their advantages as narrow pathways and some other defects. This work has considered both the conductivity and capacity of this vanadium-based NASICON cathode at the same time, where a sodium-rich cathode material Na 3.2 V 1.8 Mn 0.15 Mg 0.05 (PO 4 ) 3 (NVMMP) with Mn 2+ and Mg 2+ dual-substituents has been designed considering the low cost and environmentally friendly characteristics. The synergistic effects introduced by Mn 2+ and Mg 2+ substitution led to a significant increase in the capacity and cycle life of the optimized NVMMP cathode material (with a capacity retention rate of 90.6 % after 2500 cycles at 2 A g −1 ). Furthermore, the reversible storage mechanism of Zn 2+ in NVMMP cathode materials and the theoretical study of such synergistic substitution on intrinsic electronic conductivity have been revealed by different in/ex-situ characterization techniques and theoretical calculations, where redox processes generated by Mn 3+ /Mn 4+ , enhanced ionic/electron pathway, and the pinning effect caused by injecting inert MgO 6 octahedra into the NASICON framework are key points to high capacity and long-life span.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yingshuai Wang,Qianchen Wang,Xiangyu Ding,Meng Wang,Yuhang Xin,Hongcai Gao
As a promising cathode material for sodium-ion batteries, the NASICON-structured Na 4 MnV(PO 4 ) 3 (NMVP) possesses a high working voltage with two discharge potential plateaus located at ∼3.4 V and 3.6 V from the V 4+ /V 3+ and Mn 3+ /Mn 2+ redox couples, respectively. However, the rate capability and cycling stability of NMVP is unsatisfactory because of the low electronic conductivity and dissolution of manganese. In this work, a series of NMVP@C-xN (x = 10, 20 and 30) was synthesized using a sol-gel method with the generation of a nitrogen-doped carbon on the surface of NMVP particles to reveal the effect of heteroatom-doped carbon coating on improving the electrochemical performance of the cathode material. Among the prepared samples, NMVP@C–20N exhibited a high initial reversible capacity of 103.8 mAh g −1 at 0.1 C and an excellent cycling stability with a capacity retention of 86.1 % after 2000 cycles at 5 C. The excellent performance of the cathode material should be ascribed to the generation of defects and active sites of the nitrogen-doped carbon coating, leading to increased electronic conductivity and diffusion rate of sodium ions.
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2017
·
IF 2.354
Xujiao Yang,Kaiying Wang,Xianli Wang,Guangli Chang,Siao Sun
NASICON-type NaTi 2 (PO 4 ) 3 material has been extensively studied as a promising anode for sodium-ion batteries due to the open 3D framework with the large interstitial spaces, high theoretical capacity and small volume change during cycling process. However, the practical application of NaTi 2 (PO 4 ) 3 is hampered because of its low electronic conductivity . Herein, a simple approach along with post-annealing has been designed and adopted to prepare the carbon-coated NaTi 2 (PO 4 ) 3 (NaTi 2 (PO 4 ) 3 @C) composite. The as-prepared anode material is characterized by XRD , SEM, TEM and Raman spectrum . The electrochemical measurements reveal that NaTi 2 (PO 4 ) 3 @C has excellent Na-storage performances including high reversible capacity (112.6 mAh g − 1 at 0.2 C) and good rate capability (87.1 mAh g − 1 at 5 C). The superior electrochemical performance can be resulted from the synergistic effects of the nanosized NaTi 2 (PO 4 ) 3 particles and conductive carbon layer .
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Bin Li,Boxuan Jin,Ruochen Zhang,Kaixuan Ma,Xianwen Wu,Lei Dai,Ling Wang,Zhangxing He
Metal zinc is used as anode in aqueous zinc-ion batteries due to its environmental protection, abundant storage, and high theoretical capacity. However, zinc anode has many challenges such as side reactions and zinc dendrites, which impede the further development of aqueous zinc-ion batteries. A facile strategy of constructing Sn doped NaTi 2 (PO 4 ) 3 (NTP/Sn) protective layer on surface of zinc anode (Zn@NTP/Sn) was adopted to enhance the cycling stability of zinc anode in this work. Sn doped NaTi 2 (PO 4 ) 3 was used to realize high-performance zinc anode via the structure design and interfacial characteristics, which are beneficial to accelerating transfer of Zn 2+ and improving interface performance. The average voltage hysteresis of Zn@NTP/Sn symmetric cell is only 17.4 mV at the current density of 0.4 mA cm −2 , which is much lower than that of bare Zn (75.8 mV) and Zn@NTP (43.7 mV) symmetric cells. Furthermore, Zn-MnO 2 full cell using Zn@NTP/Sn anode also shows good cycling performance. After 500 cycles at a current density of 1.2 A g −1 , Zn@NTP/Sn-MnO 2 full cell has the highest capacity of 124.2 mAh g −1 . While the bare Zn-MnO 2 and Zn@NTP-MnO 2 full cells only have 39.3 mAh g −1 and 74.2 mAh g −1 . The excellent electrochemical performance is related to improvement of wettability , increase of cell volume, and reduction of side reactions. In general, this work realizes a synergistic strategy combining structural design and interfacial modification by doping Sn for NTP as a protective coating layer for zinc anode, which provides a simple strategy for high-performance rechargeable aqueous zinc-ion batteries.
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DOI
高影响因子
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