CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xiangjie Chen,Qingquan Kong,Xiaoqiang Wu,Xuguang An,Jing Zhang,Qingyuan Wang,Weitang Yao
Aqueous zinc-ions batteries (AZIBs) are expected to be a new green energy storage devices due to the low cost and safety. As classic cathode materials for AZIBs, layered vanadium oxides have excellent redox activity and large capacity performance. However, it not only has poor conductivity, but easily dissolved during (dis)charge process. Therefore, it is necessary to modify vanadium oxide to improve electrochemical performance in AZIBs. Herein, we successfully synthesized V 2 O 3 with carbon shell (V 2 O 3 @C) by the reduction reaction of carbon with V 2 O 5 in an oxygen-free environment and tested its electrochemical performance. By exploiting the effect of different calcination temperatures on the carbon reduction reaction, V 2 O 3 @C nanospheres with different carbon shell thicknesses were successfully synthesized. After fitting the experimental data, the calcination temperature for optimal electrochemical performance was determined to be 800 ℃ (VC-800). Detailly, the capacities of V 2 O 3 @C obtained at 700, 800 and 900 ℃ in the first 100 cycles at 0.5 A/g were 454.5, 400.7 and 325.1 mAh/g, respectively. Furthermore, the obtained VC-800 showed 126 % capacity retention after 10,000 cycles at 10 A/g. In the presence of carbon shell, V 2 O 3 maintains the reversible redox valence characteristics while improving the conductivity and cycle life. This work may broaden ideas in improvement of vanadium-based materials for zinc ion storage.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wentao Wang,Xiang Li,Ruyi Wang,Jingjing Wang,Hongxia Deng,Shanshan Tong
The scarcity and economic importance of gold has motivated the researchers to develop novel and efficient adsorbents to the increase of recycling from secondary waste streams. In this work, the three-dimensional (3D) Ti 3 C 2 MXene-POSS/V 2 O 3 @C aerogel (MPVA) with orderly network structure was fabricated by the interfacial assembly of MXene and freezing-induced preassembly. The new MPVA hybrid exhibited ultrafast kinetics (only 10 min to reach equilibrium), selectivity, and excellent trapping capacity for Au (III) , owing to the reductive capture mechanism. The Langmuir model was used to describe the capture of Au (III) delivered by MPVA, achieving the maximum capture capacity of 1425.4 mg g −1 at 298 K. Moreover, MPVA displayed extremely high trapping efficiency (>99.9%) at 273 K, which suggests that this composite is promising for capturing Au (III) in cold temperatures. MPVA also shows good reusability after ten cycles. The results indicate that MPVA has great potential for efficient capturing from complex and cold aqueous solutions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 8
·e202200075
·
IF 9.14
Jun Zheng,Chenyang Zhan,Kai Zhang,Wenwu Fu,Qiaojun Nie,Ming Zhang,Zhongrong Shen
Graphical Cellmates : A zinc-ion battery cell is constructed with V 2 O 3 @C as the cathode and a “water-in-salt” electrolyte. Electrochemically induced oxidation of V 2 O 3 @C into amorphous V 2 O 5 with in situ Zn 2+ and H 2 O co-insertion leads to excellent cycling and rate performances. Systematic improvement of this architecture indicates significant promise for practical application. Aqueous Zn-ion batteries (ZIBs), with the advantages of low cost, high safety, and high capacity, have great potential for application in grid energy storage and wearable flexible devices. However, their commercial application is still restricted by their inferior long-term cycling stability, Zn dendrite formation, and the decomposition of aqueous electrolyte. In this study, a Zn|Zn(CF 3 SO 3 ) 2 +LiTFSI|V 2 O 3 @C cell is constructed to address the above issues. The V 2 O 3 @C electrode can be fully oxidized into amorphous V 2 O 5 @C simultaneously with Zn 2+ and H 2 O co-insertion. The cell delivers a high specific capacity of more than 240 mAh g −1 at 3 A g −1 , with extraordinary coulombic efficiency and capacity retention. The excellent electrochemical performances are attributed to synergistic effects between the V 2 O 3 @C electrode and the water-in-salt electrolyte with enhanced stability and improved interface reaction kinetics. Systematic improvements of this architecture indicate much promise for application.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Energy Technology
·
2019
·Vol. 8
·期 3
·1900986
·
IF 3.163
Leichao Meng,Ruisong Guo,Fuyun Li,Yuanliang Ma,Jianhong Peng,Tingting Li,Yani Luo,Youzhen Li,Xiaohong Sun
V 2 O 3 is considered to be a potential anode material due to its large specific capacity and rich resources. Herein, flock-like V 2 O 3 coated with carbon is prepared through a facile and simple solvothermal method followed by annealing at a relatively low temperature. The structure of V 2 O 3 /C is composed of porous strips. Due to the unique morphology and structure, the V 2 O 3 /C anode material shows excellent electrochemical performance. It delivers a specific discharge capacity of 696 mAh g −1 after 100 cycles, which is 95% of the specific discharge capacity (732 mAh g −1 ) after the sixth cycle. The V 2 O 3 /C anode material annealed at 360 °C (V 2 O 3 /C-360) delivers 601 mAh g −1 at a current density of 300 mA g −1 after 500 cycles. It implies superior cyclic stability of V 2 O 3 /C-360. In addition, the anode also shows excellent rate capability. Specific capacities of approximately 600, 420, and 300 mAh g −1 are obtained at the current densities of 0.3, 2, and 5 A g −1 , respectively. The large current contribution of the capacitive reveals favorable superior lithium storage kinetics. This anode material presents great application potential in high-performance 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
Nanoscale
·
2020
·Vol. 12
·期 7
·4552-4561
·
IF 6.895
Jing Yang,Bo Wang,Fan Jin,Yu Ning,Hao Luo,Jian Zhang,Fei Wang,Dianlong Wang,Yu Zhou
Lithium–sulfur batteries are promising candidates for the next generation of energy storage systems owing to their high energy density, low toxicity and abundant reserves of sulfur. However, sulfur has poor conductivity, large volume change during charge/discharge, and more importantly, the intermediate polysulfide (Li2Sn, 3 ≤ n≤8) produced in the cycling process is easily soluble in the electrolyte resulting in the “shuttle effect”, which have greatly limited the commercialization of lithium–sulfur batteries. Therefore, it is of great value to develop optimized sulfur cathode materials to improve electrode conductivity, buffer volume change and restrain the diffusion of polysulfide. In this work, we construct a V-MOF (MIL-47) derived V2O3@C hollow microcuboid with a hierarchical lasagna-like structure through hydrothermal synthesis followed by calcination, and employ it as a sulfur host for the first time. The fast anchoring of polysulfide by V2O3 nanoparticles and the high electronic conductivity of the 3D carbon framework can simultaneously inhibit the “shuttle effect” in the charge–discharge process and accelerate the kinetics of the redox process. Moreover, the special lasagna-like structure with appropriate voids generated during calcination not only provides many sites for sulfur loading, but also effectively alleviates the volume expansion problem during the electrochemical reaction. Therefore, the final fabricated sulfur cathode via the melt impregnation method exhibits good cycling stability (62.3% after 1000 cycles at 1C) and rate performance (663 mA h g−1 at 2C) at a relatively high sulfur loading of 3.7 mg cm−2.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yan Li,Huibin Liu,Mingyu Ma,Wenchao Peng,Yang Li,Xiaobin Fan
Vanadium-based oxides, known for their high capacity and low cost, have garnered significant attention as promising cathode candidates in aqueous zinc-ion batteries. Nonetheless, their poor rate performance and limited durability in aqueous electrolytes present a challenge to the realistic implementation of vanadium-based aqueous zinc-ion batteries. Here, we synthesized nitrogen-doped V2O3@C (N–V2O3@N–C) via ammonia treatment of V2O3@C derived from vanadium-based metal–organic framework (V-MOF), aiming to achieve outstanding rate and cycling performance. The N–V2O3@N–C electrode exhibits notable in situ self-transformation into an amorphous state. Density functional theory calculations reveal that the distorted N–V2O3 structure and uneven charge distribution result in the creation of an amorphous state. As expected, Zn/N–V2O3@N–C aqueous zinc-ion batteries can achieve remarkable specific capacity (349.0 mAh g–1 at 0.1 A g–1), along with impressive rate performance, showcasing a capacity of 253.5 mAh g–1 at 5 A g–1 and exceptional durability at 5 A g–1 (96.4% after 1350 cycles). The employed induced amorphization approach offers novel perspectives for designing high-performance cathodes that exhibit both sturdy structures and extended cycling lifespans.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Heng-xue Zhou,Yi Long,Qiu-fang Zhong,Jia-liang Wang,Bo Liang,Ying-bang Yao,Daniel Q. Tan,Sheng-guo Lu,Tao Tao
A novel V 2 O 3 @C/S composite cathode material is prepared via a combined strategy consisting of solution synthesis, hydrothermal treatment and high-temperature carbonization, and all solid-state lithium‑sulfur (Li S) batteries with high-performance are constructed. The obtained V 2 O 3 @C host material demonstrates excellent properties, including good structural stability, superior electrical conductivity, strong interfacial compatibility, notable sulfur adsorption and high catalytic capabilities. At a current rate of 0.1C, the V 2 O 3 @C/S cathode delivers an initial capacity of 1125 mAh g −1 with a capacity retention of 67.1 % after 150 cycles in solid-state cells at the room temperature. At 0.5C, the capacity retention still remains 45.5 % after 250 cycles. Cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel analysis further demonstrate the enhanced reaction kinetics and reduced charge-transfer resistance. This work provides a promising strategy for designing the high-performance cathode materials of solid-state Li S batteries.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Tian Tian,Xuansheng Wang,Keke Shi,Fang Liu,Jiali Wang,Xiaoying Zhang,Shengting Li,Wei Chen,Yufei Song,Jinping Li,Guang Liu
Magnesium hydride (MgH₂) is deemed to a prospective high-capacity solid-state hydrogen storage material. However, slow kinetics and high desorption temperature severely limit its practical application. In this study, V₂O₃/C nanospheres composed of two-dimensional nanosheets were especially synthesized and employed as catalysts to enhance the hydrogen storage performance of MgH₂. The initial dehydrogenation temperature of the MgH₂-V₂O₃/C system was reduced to 200.4°C, with a dehydrogenation capacity of 6.69 wt%. At 300°C, the MgH₂ with 10 wt% V₂O₃/C catalyst could release 6.3 wt% H₂ in just 7 min and could start hydrogen absorption reaction at room temperature. The dehydrogenation activation energy (Ea) of the MgH₂-10 wt% V₂O₃/C system was calculated to be 88.96 ± 4.66 kJ/mol, representing an approximate 34.8 % reduction compared to the 136.43 ± 4.32 kJ/mol of ball-milled (BM) MgH₂. Moreover, the sample demonstrated exceptional cyclic stability, remaining the hydrogen storage capacity of 99.5 % after 30 cycles. In this system, in-situ elemental vanadium serves as the catalytic active site and plays a crucial catalytic role. Additionally, the carbon material helps prevent the agglomeration of MgH₂. The combined effect of these two components significantly improves the kinetic property for the MgH₂ system.
研究领域:
材料科学
·
能源化学
·
纳米催化
·
固态储氢
·
物理化学
✓ 已验证
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Anqi Ni,Zhiqiang Xiong,Yingna Zhang,Xiao Jiang,Xin Li,Chongbo Liu,Xiaojun Zeng
Over the recent years, carbon materials derived from biomass have gained extensive interest owing to their structural diversity and high porosity. In this work, butterfly wings (BWs) with concave-cavity-array structure and vanadium-containing metal-organic framework (V-MOF) are selected as precursors, and a rail-like heterostructure composed of V 2 O 3 @C/BWs derived carbon (BWC) composite is constructed by a facile solvothermal reaction and one-step carbonization procedure. The unique concave-cavity-array structure of BWs is conducive to multiple reflections and scattering of electromagnetic waves (EMWs). Moreover, the V-MOF derived V 2 O 3 @C microspheres are uniformly dispersed on the surface and concave cavities of BWC, which generates abundant heterogeneous interfaces and boosts the interfacial polarization. The results show that the minimum reflection loss of V 2 O 3 @C/BWC composites reaches −59.3 dB, and the effective absorption bandwidth is up to 6.56 GHz, which covers the entire Ku-band. In addition, under the incidence angle of 15°, the maximum radar cross section reduction value of V 2 O 3 @C/BWC materials is found to be 43 dB m 2 . Overall, this work provides a new approach to develop carbon-based EMW absorbers with strong and ultra-wideband absorption.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Changmeng Huan,Xinyue Zhao,Xiudi Xiao,Yuan Lu,Shuai Qi,Yongjun Zhan,Lingzhi Zhang,Gang Xu
In this work, the V 2 O 3 nanoparticles (NPs) with ultrathin carbon shells were synthesized by a facile solvothermal process. The V 2 O 3 NPs were about 30 nm and contained a carbon shell of about 2 nm thick. The V 2 O 3 NPs were homogeneously dispersed and loosely packed. When used as anode material , the V 2 O 3 core-shell NPs showed a reversible capacity up to 525 mA h g −1 at 200 mA g −1 over 200 cycles with good cycle stability and rate capability. The excellent electrochemical performance promotes its practical application in lithium-ion batteries.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yu Rao,Kongjun Zhu,Guoliang Zhang,Feng Dang,Jiatao Chen,Penghua Liang,Zhihan Kong,Jun Guo,Hongjuan Zheng,Jie Zhang,Kang Yan,Jinsong Liu,Jing Wang
Molybdenum sulfide has been widely investigated as a prospective anode material for Li+/Na+ storage because of its unique layered structure and high theoretical capacity. However, the enormous volume variation and poor conductivity limit the development of molybdenum sulfide. The rational design of a heterogeneous interface is of great importance to improve the structure stability and electrical conductivity of electrode materials. Herein, a high-temperature mixing method is implemented in the hydrothermal process to synthesize the hybrid structure of MoS2/V2O3@carbon-graphene (MoS2/V2O3@C-rGO). The MoS2/V2O3@C-rGO composites exhibit superior Li+/Na+ storage performance due to the construction of the interface between the MoS2 and V2O3 components and the introduction of carbon materials, delivering a prominent reversible capacity of 564 mAh g–1 at 1 A g–1 after 600 cycles for lithium-ion batteries and 376.3 mAh g–1 at 1 A g–1 after 450 cycles for sodium-ion batteries. Theoretical calculations confirm that the construction of the interface between the MoS2 and V2O3 components can accelerate the reaction kinetics and enhance the charge-ionic transport of molybdenum sulfide. The results illustrate that interfacial engineering may be an effective guide to obtain high-performance electrode materials for Li+/Na+ storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Cong Gao,Wei Sun,Weitong Zhang,Qiao Zhang,Shanyi Guang,Qianjin Chen
Open-framework crystal structured vanadates have been extensively investigated as cathode materials for aqueous zinc-ion batteries (ZIBs). However, the inherent challenges of poor electronic conductivity and structural instability compromise the rate capability and overall cycle life. Herein, we first successfully synthesized octahedral MIL-101(V) and prepared the Zn 3 (OH) 2 V 2 O 7 ·2H 2 O@C (ZVOH@C) composite by in-situ electrochemical conversion of MIL-101(V)-derived crystalline V 2 O 3 and carbon composite (V 2 O 3 @C). The ZVOH@C composite of open-framework crystal structured Zn 3 (OH) 2 V 2 O 7 ·2H 2 O and conductive carbon skeleton not only possesses more active sites, more stable crystal structure and higher electrical conductivity , but also provides faster Zn 2+ diffusion kinetics. As expected, the ZVOH@C composite electrode exhibits excellent capacity of 506.3 mAh/g at a current density of 1.0 A/g, exceptional rate performance (375.7 mAh/g at 20.0 A/g), and impressive long-term cycling stability, maintaining 314.5 mAh/g over 5000 cycles at 20.0 A/g. This study demonstrates a promising method for designing new cathode materials through in-situ electrochemical synthesis for ZIBs .
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）