JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Dewei Liu,Qijie Zhang,Saipeng Ding,Fufeng Yan,Haiyang Dai,Tao Li,Renzhong Xue,Jing Chen,Gaoshang Gong,Cui Shang,Xuezhen Zhai
A series of nano-V 1- x Mn x O 2 samples ( x = 0–0.035) were prepared by a simple solvothermal method. XRD patterns and the Rietveld refinement results of V 1- x Mn x O 2 samples showed that Mn ions were incorporated into the V sites during the solvothermal process. XPS results indicated that the valence state of Mn ion was a mixed state of Mn 2+ , Mn 3+ and Mn 4+ . The corresponding relationship between the diameter, specific surface area and electrochemical performances of V 1- x Mn x O 2 nanorods was studied. It can be found that Mn doping promoted the insertion of K + ions into the electrode material and improved the conductivity, discharge capacity and cycle stability, which was due to more defects induced by Mn doping. The x = 0.020 sample had the largest specific capacitance (the 88% capacity retention rate after 550 cycles at 0.1 A·g −1 ) due to the improvement of structural stability by Mn-ion doping. These results provide great potential applications for nano-VO 2 (B) in the cathode material of lithium-ion battery and supercapacitor .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Weicai Liu,Hui Zong,Mengshu Li,Ziquan Zeng,Shijing Gong,Ke Yu,Ziqiang Zhu
A two-dimensional MXene (Ta4C3) was innovatively used herein to modulate the space group and electronic properties of vanadium oxides, and the MXene/metal–organic framework (MOF) derivative VO2(B)@Ta4C3 with 3D network cross-linking was prepared, which was then employed as a cathode to improve the performance of aqueous zinc ion batteries (ZIBs). A novel method combining HCl/LiF and hydrothermal treatments was used to etch Ta4AlC3 to obtain a large amount of accordion-like Ta4C3, and the V-MOF was then hydrothermally grown on the surface of the stripped Ta4C3 MXene. During the annealing process of V-MOF@Ta4C3, the addition of Ta4C3 MXene liberates the V-MOF from agglomerative stacking, allowing it to show additional active sites. More significantly, Ta4C3 prevents the V-MOF in the composite structure from converting into V2O5 of space group Pmmn but into VO2(B) of space group C2/m after annealing. A considerable advantage of VO2(B) for Zn2+ intercalation is provided by the negligible structural transformation during the intercalation process and the special tunnel transport channels, which have an enormous area (0.82 nm2 along the b axis). According to first-principles calculations, there is a strong interfacial interaction between VO2(B) and Ta4C3, which deliver remarkable electrochemical activity and kinetic performances for the storage of Zn2+. Therefore, the ZIBs prepared with the VO2(B)@Ta4C3 cathode material exhibit an ultra-high capacity of 437 mA h·g–1 at 0.1 A·g–1 while showing good cycle performance and dynamic performance. This study will offer a fresh approach and a reference for creating metal oxide/MXene composite structures.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wenqin Ling,Zhengguang Zou,Shuchao Zhang,Xiaoxiao Peng,Shiying Luo,Xin Tang,Jing Geng
Heteroatom doping has always been a common modification method for lithium-ion batteries (LIBs) cathodes. The addition of guest heteroatoms to the material can adjust the microstructure of the host material, and enlarge the lattice spacing or form the vacancy defect of oxygen, which can effectively improve the Electrochemical performance of materials. Herein, CO 2 -modified VO 2 (B) nanorods were synthesized via a simple one-step hydrothermal method . Thanks to the extended layer spacing in VO 2 (B) that results from CO 2 small molecules, the synthesized CO 2 -VO 2 electrode exhibits a high initial capacity of 251.1 mA g −1 at 100 mA g −1 , and a capacity retention of 81.8 % after 80 cycles. It is worth noting that the CO 2 -VO 2 electrode also has a high rate capacity (170.0 mAh g −1 at 1 A g −1 ), and the capacity recovery rate can reach 84.5 % even under the condition of variable current. Further studies showed that the role of CO 2 small molecules as a pillar in the interlayer of VO 2 (B) and a weak electrostatic attraction between O CO2 and Li + existed, resulting in a robust crystal structure and convenient Li-ion diffusion conditions during the (de)intercalation of lithium ions in VO 2 (B). This study opens the way for further exploration of the application of small molecule doping in the field of lithium-ion batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Ziyan Yuan,Fuyu Xiao,Yixing Fang,Peixun Xiong,Xiaoli Sun,Xuehui Duan,Xuhui Yang,Haosen Fan,Mingdeng Wei,Qingrong Qian,Qinghua Chen,Lingxing Zeng
Designing cathodes with long service life, remarkable rate capability and all-climate workable is crucial to improve the performance of aqueous zinc-ion batteries (AZIBs). Herein, we constructed a vanadium dioxide/graphene oxide (VO 2 (B)/GO) sample that combines VO 2 with GO through hydrothermal route and can simultaneously provide rate capability. VO 2 (B)/GO is rich in oxygen vacancies , which weakens the electrostatic force , and GO prevents vanadium oxidation . Density functional theory (DFT) calculations elucidate oxygen vacancies can offer more storage sites with increased reaction kinetics. The electrode exhibited a high reversible capacity of 423 mAh g −1 at 0.5 A g −1 and preserved long-life cycling properties at 15 A g −1 . The presence of oxygen vacancies and GO can contribute to the excellent performance and prevent the structure of VO 2 from collapsing during cycling. We successfully lit up commercial light-emitting diode (LED) lights with a VO 2 (B)/GO electrode. In addition, VO 2 (B)/GO exhibits excellent performance in all-climate conditions (-15-60 °C). This combinatorial design strategy provides a broadly applicable approach for durability and all-climate workable batteries .
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2018
·
IF 2.21
Han Zhang,Sixv Zhu,Beibei Guo,Dongyun Wan,Hongjie Luo,Yanfeng Gao
This work first reports the controllable preparation of rGO/VO 2 (B) intercalation films via a simple sol-gel method at relative low temperature (420 °C). The excellent conductance and thermal conductivity of rGO could significantly enhance the performance and sensitivity of VO 2 (B) films to be used for uncooled infrared detectors . Aluminum (Al) reduction is introduced to reduce the oxygen-containing functional groups of graphene oxide (GO) and V 2 O 5 of GO/V 2 O 5 intercalation films in a two-zone furnace. According to our results, the reduced-GO (rGO), as a fast channel for electron transport , was inserted into the VO 2 (B) film, and thus the electron transfer between rGO/VO 2 (B) intercalation films occurs much faster than in pure VO 2 (B) films. The film preparation processes were optimized through adjusting the doping concentration of rGO, and rGO/VO 2 (B) intercalation films with applicable temperature coefficient of resistance (TCR) (−2.78%/K) and square-resistance (21.22 kΩ) were achieved. Our work provided a promising and feasible technique to convict the cost and complexity of high vacuum method used to fabricate the VO 2 thermal sensing thin films .
研究领域:
材料科学
·
纳米技术
·
热感应
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 8
·A1660
·
IF 3.12
Yuan Cen,Sha Li,Yan Zhou,Xing Cai,Xian Wang,Qin Xiang,Bingbing Hu,Danmei Yu,Yuping Liu,Changguo Chen
With the worldwide demand for electrochemical energy storage continuing to rise, rechargeable magnesium-based batteries have received considerable attention, because of their low cost, high volumetric capacity, and dendrite-free nature. However, limited cathode options and parasitic side reactions hinder the development of magnesium-based batteries. To overcome these issues, a self-designed hybrid magnesium-lithium ion batteries using ultrathin vanadium dioxide nanosheets as the cathode, magnesium as the anode, molybdenum as the current collector and an all-phenyl complex with lithium chloride as the electrolyte was assembled in this work. The battery delivers outstanding electrochemical performance with a high reversible capacity of 275 mAh g−1, standout rate performance of 145 mAh g−1 at a current density of 4 A g−1, long cycle life and high energy density of 484 Wh kg−1. This superior electrochemical performance demonstrates the great potential of ultrathin vanadium dioxide nanosheets for application in hybrid magnesium-lithium ion batteries.
研究领域:
电化学
·
储能技术
·
材料科学
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Changqing Yuan,Xiaorong Meng,Han Shen,HaoHao Wei
To address the shortcomings of VO 2 (B) when utilized as cathode materials for aqueous zinc ion batteries (AZIB), this study prepared a fluorine and manganese co-doped VO 2 (B) with a nanorod-like structure, formed from convoluted multilayered nanosheets, was synthesized via a solvothermal method. It was established that F and Mn doping effectively broadens the lattice structure and tunneling space of VO 2 (B) and induces lattice distortion of VO 2 (B) through the high electronegativity of F element, leading to the ductile growth of FMVO into a nanorod-like structure made of multilayered ultrathin nanosheets curled. The increased tunneling space and active sites of FMVO, compared to pure VO 2 (B), significantly enhanced the de-embedding rate of Zn 2+ and reduced diffusion resistance. The specific capacity of F 0.06 M 0.02 VO is 523.92 mAh/g (0.2 A/g) with 88.64 % capacity retention after 2,000 cycles (5 A/g). This research provides a novel approach to the development of cathode materials for AZIB.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Xuezhen Zhai,Xiaohong Chen,Yongqi Wu,Xuzhe Wang,Cui Shang,Lamei Zhang,Chengzhou Zhao,Huawei Zhang,Jimin Shang,Dewei Liu
The VO 2 (B) cathode materials maintain high stability during the zinc ion embedding/removal process, making it a research hotspot in positive electrode materials for water-based zinc ion batteries . However, its poor ion diffusion kinetics and intrinsic semiconductor properties have become the main reasons limiting the enhancement of the specific capacity and rate performance. Herein, the function of Co-doping on the microstructure, morphological characteristics, transport characteristics and electrochemical performances of the Co x V 1- x O 2 (B) nanorods were comparatively investigated. The Co 0.05 V 0.95 O 2 (B) cathode has the highest specific capacity and unmatched cycle stability. The optimized electrochemical performance was mainly due to the synergistic optimization of grain distortion, grain size and oxygen vacancy inside the lattice. The electrochemical kinetics results show that the Co 0.05 V 0.95 O 2 (B) cathodes were capacitor and battery hybrid characteristics. The above conclusions provide a good idea and experimental verification for applying VO 2 (B) cathode in the water-based zinc ion batteries market.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
·
半导体物理
·
电极工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shiwen Wang,Chuanzhen Ma,Junwei Ding,Kang Zhao,Heng Wang,Hewei Luo,Shide Wu,Shaoming Fang
VO 2 (B) has attracted tremendous attention as a cathode for aqueous zinc-ion batteries (AZIBs), but its low intrinsic electronic conductivity and uncontrolled vanadium dissolution hinder further practical applications. Herein, Zn 0.03 VO 2 , with guest zinc ions preinserted into the tunnel sites, is demonstrated to enhance the conductivity and cyclability of VO 2 (B). The tailored structure, featuring a modulated electronic configuration, offers enlarged ion diffusion tunnels, improved electronic conductivity, and enhanced electrochemical activity, thereby facilitating the reversible de-intercalation of Zn 2+ /H + ions, as confirmed by both experimental results and theoretical calculations. Notably, vanadium dissolution is significantly suppressed due to the chemical pre-insertion of guest zinc, which weakens the interaction between Zn 2+ and host lattice, as well as the homologous ion effect. As a result, Zn 0.03 VO 2 cathode delivers a high capacity of 358 mAh g −1 , particularly at low current density of 0.1 A g −1 , with 85% capacity retention after 300 cycles, excellent rate capability of 175 mAh g −1 at 5 A g −1 , and long cycling stability over 2000 cycles at 20 A g −1 . Moreover, a pseudocapacitive-dominated Zn 2+ /H + co-insertion mechanism is conclusively identified through electrochemical and spectroscopic analyses. This work provides valuable insights into ion-preinserted structural modulation of vanadium oxides for the development of high-performance AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-8
·
IF 4.011
Lv Weifeng,Yang Can,Meng Ge,Zhao Ruifeng,Han Aijuan,Wang Rong,Liu Junfeng
Vanadium oxide has attracted extensive attention for electrochemical capacitors due to its wide range of versatility. However, due to the relative poor conductivity and chemical stability of vanadium oxide, severe losses of capacitance often occur during charge and discharge processes. Herein, a free-standing vanadium dioxide (VO 2 (B)) nanobelts/reduced graphene oxide (VO 2 /rGO) composite film was fabricated by assembly of VO 2 (B) nanobelts and rGO for supercapacitors. The flexible rGO sheets and VO 2 (B) nanobelts intertwined together to form a porous framework, which delivered a 353 F g −1 specific capacitance at 1 A g −1 , and after 500 cycles, the specific capacitance retention rate was 80% due to the enhanced conductivity of the VO 2 (B) nanobelts by rGO and increased transport of ions and electrons by the porous structures. An all-solid-state symmetrical supercapacitor was assembled from the VO 2 /rGO composites, which exhibited good energy storage performance with a maximum voltage of 1.6 V. The maximum power density is 7152 W kg −1 at the energy density of 3.13 W h kg −1 , ranking as one of the highest power densities for reported materials. In addition, after 10000 cycles, it still has a specific capacitance retention rate of 78% at 10 A g −1 .
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xuezhen Zhai,Xiaohong Chen,Ruihan Li,Lamei Zhang,Xuzhe Wang,Cui Shang,Chengzhou Zhao,Huawei Zhang,Jimin Shang,Dewei Liu
VO 2 (B) has emerged as a promising cathode candidate for aqueous zinc-ion batteries (ZIBs) due to its unique tunnel-structured framework that facilitates zinc ion transport. Nevertheless, practical implementation faces challenges including limited coulombic efficiency, inadequate cycling stability, and restricted rate capability, primarily attributed to poor electrical conductivity and strong Zn 2+ interionic repulsion. In this work, Al 3+ is selectively incorporated into VO 2 (B) and induced structural optimization in Al x V 1- x O 2 (B), where controlled lattice contraction and electronic structure modification near the Fermi level. Aluminum doping induces 3D morphology that enhances ion diffusion pathways and electrolyte interaction. The engineered material exhibits enhanced electrochemical kinetics through oxygen vacancy formation (providing active sites) and substantially improved pseudo-capacitive charge storage. The optimized Al 0.05 V 0.95 O 2 (B) cathode achieves a remarkable specific capacity of 364.7 mA·h·g −1 at 0.1 A/g, while maintaining 91.64 % capacity retention after 2000 cycles under high-current operation (5.0 A/g), demonstrating superior electrochemical stability.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jie Chen,Baoquan Xiao,Changfa Hu,Hangda Chen,Juanjuan Huang,De Yan,Shanglong Peng
VO2 (B) electrode material has relatively high capacity and good cycle stability. However, its poor rate performance limits its further development because of the strong interaction between zinc ions and the main lattice of VO2 (B). Herein, considering the design principle of rate performance improvement, we furnished a different scheme from a previous multistep method of the synthesis–modification strategy of pure VO2 (B). VO2@V2C 1D/2D heterostructure was constructed by controllable partial oxidation of V2C by a one-step hydrothermal method. The unique 1D/2D heterostructure improves diffusivity and reduces the diffusion size of zinc ions at the same time, which significantly improved the rate performance of VO2. The situation at the heterostructure interface is analyzed by Raman spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. Combined with cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic intermittent title technology tests, the promotion mechanism for the rate performance of the derived VO2 is further explained. In addition, it is found that V2C MXene can be electrochemically activated when the voltage reaches 1.24 V. By further widening the voltage window to activate V2C, VO2@V2COx heterostructure was obtained, which realizes high capacity and maintains high rate performance in aqueous zinc-ion batteries. This work provides key insights for the design of high-rate-performance electrode materials for aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）