CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jing Wang,Feng Zheng,Yi Yu,Pengfei Hu,Mingjun Li,Jiao Wang,Jifang Fu,Qiang Zhen,Sajid Bashir,Jingbo Louise Liu
Supercapacitors with improved specific capacitance , long cycling life, high power density and energy density are fabricated to close the gap between traditional and emerging energy storage. We develop interactive ternary metal oxides nano-ribbon electrodes used to assemble symmetric supercapacitor. The well-aligned vanadium oxide ribbon arrays act as the matrix, growing from nickel oxide/nickel substrate and then being grafted by manganese oxide nanoparticles. These tri-metallic oxides are formed in a cost-effective and green hydrothermal chemistry. The electrodes composed of ribbon arrays retain their crystallographic structure during charging and discharging processes, enabling steadiness at 83.6 % after 10,000 cycles. These as-prepared electrodes demonstrate a specific capacitance of 788 F g −1 at 5 mV s −1 . The symmetrical supercapacitors are assembled using triple component electrodes, achieving a high energy density of 138 W h kg −1 at a power density of 450 W kg −1 . These binderless single-cell devices are reported with a simplified design showing 10–20 times higher energy density in comparison with reported results of the V 2 O 5 -MnO 2 system. The nanografting results in reactive interfaces with interpenetrating channels for efficient ion transport and electron conduction. The advances to design nanostructured supercapacitor materials are based on these heterojunction arrays to enhance their supercapacitive performances.
研究领域:
材料科学
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能源存储技术
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DOI
高影响因子
Chemical Physics Impact
·
2022
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IF 0
Yanke Yu,Mengqiao Geng,Jiahang Li,Jingjing Wang,Desheng Wei,Chi He
Commercial V 2 O 5 -WO 3 /TiO 2 (VWTi) catalysts used in NH 3 -SCR reaction with varied Zn loading were prepared and then effect of SO 2 on Zn-poisoned VWTi catalysts was investigated. Zn could cause the deactivation of VWTi catalysts. Nevertheless, the effect of SO 2 on Zn-poisoned VWTi catalysts varied with Zn loading. For Zn-poisoned catalyst with low content of Zn (1.0 wt.%, ZnL), SO 2 would promote the activity recovery of the catalyst. However, SO 2 had no influence on the Zn-poisoned catalyst with high Zn content (4.0 wt.%, ZnH). The catalyst was characterized by N 2 adsorption-desorption, XRD, XPS, SO 2 -TPD, NH 3 -TPD, H 2 -TPR and in situ DRIFTS. Tri-coordinated sulfate species were formed on ZnL sample in the presence of SO 2 , and the sulfate species could form new Brønsted acid sites, causing the recovery of activity. But ZnSO 4 was appeared and no Brønsted acid sites formed on ZnH sample under SO 2 , thus the activity of ZnH sample changed little.
研究领域:
催化化学
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环境科学
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产品关联
DOI
Nano Energy
·
2023
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IF 17.6
Yuexin Liu,Yuning Sun,Jing Zhang,Xuxia Hao,Mingcheng Zhang,Ping Wei,Xiaoli Zhao,Kefeng Cai
The lack of suitable cathode materials greatly limits the potential applications of rechargeable aqueous zinc ion batteries (ZIBs), despite their great promise in terms of high safety, high energy density , and low cost. One promising cathode material is VOOH, which possesses high specific capacity and fast Zn 2+ transport channels after a phase transition to V 2 O 5 ·nH 2 O during electrochemical cycling. However, its susceptibility to structural disintegration and aggregation during charging and discharging leads to severe capacity decay. To address this issue, we construct a composite consisting of VOOH particles and VS x microrods by a one-step hydrothermal method using a vanadium-based metal-organic framework (MIL-88B(V)) as a sacrificial template. The VOOH particles undergo electrochemical activation and transform into V 2 O 5 ·nH 2 O nanoarrays that vertically grow on the VS x microrods. This unique nano-composite effectively maintains the morphology of nanoarrays in electrochemical cycling, resulting in a significant enhancement of rate performance and long-term cycling stability. Moreover, the VS x itself provides considerable capacity and its high conductivity improves the rate performance of the composite. Consequently, the VOOH/VS x nanocomposite exhibits a superior capacity of 364 mA h g −1 at 0.2 A g −1 after activation. Notably, it maintains remarkable capacity retention of 99.6% after 700 cycles, even at a high current density of 10 A g −1 . Based on these findings, we believe that the VOOH/VS x composite holds great promise as a cathode material for aqueous ZIBs.
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高影响因子
Materials Today Chemistry
·
2023
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IF 7.3
Tongyu Liu,Yaoguo Huang,Linlin Chen,Hui Zhang,Caifu Dong,Ming Wang,Yali Zhang
Vanadium oxide (V 2 O 5 ) cathode material , possessing abundant reserves and high theoretical capacity, has been extensively researched in aqueous zinc ion batteries (ZIBs). However, its electrochemical performance is significantly hindered by insufficient electronic conductivity, vanadium dissolution into electrolyte, and slow diffusion kinetics. In this study, the V 2 O 5 micro-flower was first synthesized by a solvothermal method, and then modified by coating with AlF 3 passivation layer, forming AlF 3 @V 2 O 5 hybrid material . Impressively, AlF 3 @V 2 O 5 exhibits excellent electrochemical and kinetic properties due to the special structure of V 2 O 5 and the interfacial protection of AlF 3 . An exceptional rate property (325 mAh g −1 at 0.1 A g −1 , 188 mAh g −1 at 15 A g −1 ) as well as extraordinary cycling stability with 89.3% capacity retention after 6000 cycles at 10 A g −1 can be attained with 2 wt% AlF 3 addition (that is AF-2@V 2 O 5 ). The computation based on density functional theory (DFT) suggests that AlF 3 coating can reduce the interlayer electrostatic interaction and adsorption energy barrier between the intercalated Zn 2+ and V 2 O 5 host, thereby enabling fast redox kinetics. This study showcases the efficacy of interfacial modification of passivated coatings and presents an influential approach for material design in ZIBs .
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2023
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IF 4.5
Mengmei Liu,Zhihua Li,Yibo Zhang
The safety and low toxicity of aqueous zinc-ion batteries (ZIBs) are piqueing intense scientific interest. Slow reaction kinetics and substantial structural degradation of the cathode materials, however, prevent the creation of ZIBs. As a better cathode for ZIBs, tunnel-structured V 2 O 5 hierarchical with a high preintercalated K cation content (K-V 2 O 5 ) are proposed here. The K-V 2 O 5 are specifically made using a self-sacrificial template approach that also involves hydrothermal intercalation in a neutral solvent and phase change during annealing. A subsequent H + and Zn 2+ intercalation procedure at various voltage platforms is clarified when tested as cathodes for ZIBs. Prior to the subsequent insertion of Zn 2+ into V 2 O 5 , the water-solvated H + first enters tunnel cavities, which partially transforms the V 2 O 5 phase from a tunnel-type structure to a layered-type structure. The pre-intercalated K cations with a high content that act as pillars in the layered-type matrix stabilize the layered structures and widen the migration channels for Zn 2+ , which can aid in the diffusion of Zn 2+ in the V 2 O 5 cathodes.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Jingwei Li,Zhengyi Huang,Cong Wang,Lei Tian,Xiaoqing Yang,Rongfu Zhou,Mohamed Nawfal Ghazzal,Zhao-Qing Liu
Refining carrier transfer in bandgap-broken heterojunctions, which consist of two semiconductors with broken bandgaps, is crucial yet highly challenging for photocatalysis. Herein, we incorporated amorphous carbons (AC) into the bandgap-broken V 2 O 5 /GdCrO 3 heterojunctions, inducing a linkage effect to facilitate photoexcited carrier transfer. The created V-O-C and Cr-O-C bonds in V 2 O 5 -AC-GdCrO 3 interfaces show almost identical orbital energies to overcome the broken-gap energy barriers at interfaces. The holes at GdCrO 3 ’s valence band and electrons at V 2 O 5 ’s conduction band tent to migrating toward the carbon ring of amorphous carbon via Cr-O-C and V-O-C bonds, thereby enhancing carrier separation of bandgap-broken V 2 O 5 /AC/GdCrO 3 heterojunction. By controlling the relative amount of metal-O-C bonds in the interface, the modulation of charge transfer kinetics was also achieved on V 2 O 5 /AC/GdCrO 3 , resulting in ∼7 times higher of H 2 generation than V 2 O 5 /GdCrO 3 . The concept could be expanded to the other carbon allotropes, including graphene, carbon nanotube, and graphdiyne conjugated structures, demonstrating a universal strategy in reaching optimal charge transfer of broken-bandgap heterojunctions for photocatalytic H 2 production.
研究领域:
材料科学
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能源科学
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化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 34
·期 2
·2309753
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IF 19
Xu Zhao,Linyuan Li,Lirong Zheng,Longlong Fan,Yong Yi,Guobin Zhang,Cuiping Han,Baohua Li
Vanadate materials are feasible cathodes for metal–ion batteries due to their stable layered structure, abundant valence states, and high capacity. However, much uncertainty still exists about precisely modulating intercalants to facilitate ion storage. Here, V 2 O 5 pre-intercalated with various transition metal ions M 2+ (M═Ni, Co, Mn) are developed as model materials to analyze the coupling effect between guest ions and host material. Through density functional theory simulations, it is found that M 2+ interacts with V–O chain via M 3d-O 2p covalent bonds, and extended X-ray absorption fine structure reveals the Ni─O interatomic distance at 1.56 Å shorter than Co─O (1.60 Å) and Mn─O (1.72 Å), suggesting the M–O band type with different covalency degree can optimize VO x polyhedron and local electronic structure. Furthermore, NiVO cathode materials with the smallest layer spacing shows higher redox voltage and better rate/cycling performance for Ca 2+ storage than CoVO/MnVO, elucidating that Ni has stronger tendency to attract electrons and bonds with V–O layer tightly, thus supplying a reliable ion diffusion channel for Ca 2+ . Through ions pre-intercalated techniques, this work highlights both layer spacing and physicochemical properties of intercalants affect electrochemical process, which is significant for developing high-performance vanadate cathode materials.
研究领域:
材料科学
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电化学
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电池技术
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DOI
高影响因子
JOURNAL OF CATALYSIS
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2025
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IF 6.5
Wenli Zhang,Xu Han,Xianhong Zheng,Yi Yang,Zhiqi Zhao,Haiwei Yang,Yi Zhang,Chengbo Du,Zongqian Wang,Qingbo Xu,Changlong Li,Peng Wang
Solar-driven photocatalysis is inherently limited by its diurnal discontinuity. Herein, we report a V 2 O 5 /g-C 3 N 4 /Ti 3 C 2 triadic composite that transcends this limitation via a “micro proton-battery-like” mechanism, enabling round-the-clock catalytic activity. The optimized composite achieves 93.9 % tetracycline degradation under visible light and, remarkably, maintains 64.1 % efficiency in the dark. This is underpinned by an 8-fold higher electron storage capacity (0.16 μmol/mg) than pristine g-C 3 N 4 , achieved via reversible V 5+ /V 4+ redox transitions. DFT calculations corroborate charge localization in V 3d orbitals during the light-driven “charging” phase and subsequent Ti 3 C 2 -mediated electron release for ·O 2 − generation in the dark. This work establishes a groundbreaking paradigm that unifies photocatalysis with electrochemical energy storage for persistent environmental remediation.
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2017
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IF 3.012
Y.X. Wei,Y.B. Ma,M. Chen,W.M. Liu,L. Li,Y. Yan
Electrochromic devices (ECDs) based on WO 3 and Ti doped V 2 O 5 films are fabricated by using lithium (LiClO 4 ) liquid electrolyte containing ferrocene redox couple . The addition of ferrocene in electrolyte enhances electrochromic properties of device. The device based on LiClO 4 -Ferrocene electrolyte has larger charge density than that based on LiClO 4 electrolyte. In the 600–1500 nm wavelength range, the transmittance of colored device is under 2% and it has faster coloring response. At 680 nm wavelength, it shows larger changes in transmittance from 68% to 1.8% while device based on LiClO 4 electrolyte changes transmittance from 68.3% to 11.5%. The cycling data reveal that device based on LiClO 4 -Ferrocene electrolyte can yield more stable electrochromic properties at 65 °C than room temperature. In order to deeper understand the effect of electrolyte on films and devices, electrochemical impedance spectroscopy (EIS) and the voltage distribution of films based on an analog cell are separately measured and analyzed in LiClO 4 and LiClO 4 -Ferrocene electrolytes. Results indicate that compared with LiClO 4 electrolyte, films have lower charge-transfer resistance and the distributed voltage on Ti doped V 2 O 5 film is larger in LiClO 4 -Ferrocene electrolyte, which can enhance optical properties of ECD by improving charge density of Ti doped V 2 O 5 film.
研究领域:
材料科学
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电化学
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功能材料
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纳米科技
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能源技术
✓ 已验证
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·Vol. 22
·期 1
·e14882
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IF 1.8
Yifei Dai,Yuxuan Liao,Aoping He,Huan He,Tianquan Liang
The hot corrosion behaviors of the Sc 2 O 3 –Gd 2 O 3 –Y 2 O 3 co-doped ZrO 2 (SGYSZ) ceramics in Na 2 SO 4 + V 2 O 5 molten salts at high temperature were investigated in this work. The results show that the SGYSZ exhibits good hot corrosion resistance to the 50 wt% Na 2 SO 4 + 50 wt% V 2 O 5 molten salts at 1000°C. It is attributed to the doping of small Sc 3+ , which can decrease the M–O bonding length and increase the binding energy, and then reduce the dissolution and loss of the stabilizer as rare-earth cations Gd 3+ and Y 3+ from the SGYSZ. The significant synergistic effects of Sc 3+ , Gd 3+ , and Y 3+ are beneficial to enhance the phase stability and corrosion resistance of the zirconate ceramic due to the different ionic radius and basicity of rare-earth oxides (RE 2 O 3 ). More Gd 3+ in SGYSZ can promote the forming and coarsening of the GdVO 4 during mineralization, which can also decrease the loss of Y 3+ from the SGYSZ. The corrosion mechanism is discussed in detail.
研究领域:
材料科学
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陶瓷
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高温腐蚀
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无机化学
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DOI
高影响因子
Journal of Energy Storage
·
2026
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IF 10.7
Xiao Jing,Jiaheng Wang,Wei Wang,Jiarui Li,Bo Wu,Yu Sun,Jiaxu Gong,Yatang Dai
Zn-doped V 2 O 5 /NH 4 V 4 O 10 heterojunction in-situ constructed on carbon cloth. • Electronic mismatch drives interfacial charge rearrangement and coupling. • Heterointerface boosts Zn 2+ kinetics and suppresses V dissolution to prevent degradation. • Heterostructure cathode delivers high capacity and ultra-stable cycle life. Layered vanadium-based heterojunctions and cation pre-intercalation serve as effective strategies to address sluggish ion diffusion and inferior structural stability of aqueous zinc-ion batteries. Herein, hierarchical Zn-doped V 2 O 5 /NH 4 V 4 O 10 heterojunction is in-situ grown on carbon cloth via two-step hydrothermal treatment. The fabricated heterojunction accelerates Zn 2+ migration and eliminates discharge kinetic limitations of pristine cathode materials. It also restrains Jahn-Teller distortion to mitigate lattice degradation and improve structural reversibility. Benefiting from structural and interfacial advantages, the obtained cathode delivers a high specific capacity of 523.8 mA h g −1 , outstanding rate performance and 72.4% capacity retention over 3000 cycles at 3 A g −1 . It maintains 171.4 mA h g −1 at 5 A g −1 and exhibits 96.37% capacity recovery after current adjustment. This work offers a promising interfacial engineering route for advanced aqueous zinc-ion battery cathodes and expands the application prospect of vanadium-based layered heterostructures.
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xiangsen Xu,Qin Huang,Yajing Wu,Yiqing Zeng,Feng Zhang,Zhaoxiang Zhong,Weihong Xing
For catalytic membranes, the loading of catalysts provides the membrane substrate with novel catalytic functionality, while simultaneously inducing membrane surface reconstruction. However, the effect of such surface reconstruction on performance remains unclear. Herein, VCeTi/SiC catalytic membranes with distinct surface structures were fabricated by three distinct preparation routes. Their NH 3 -SCR activity, gas permeance, and separation performance were systematically evaluated. For both VCeTi/SiC-A and VCeTi/SiC–B, the multi-step impregnation and catalyst blockage led to significantly reduced pore sizes (7.6 μm and 5.4 μm) and poor pore size distributions. In contrast, the VCeTi/SiC–C catalytic membrane prepared by single-step solution impregnation method exhibited an optimal catalyst distribution while largely maintaining a concentrated pore size distribution almost identical to the original catalytic membrane. Benefiting from the more uniform gas flow within the carrier owing to its concentrated pore size distribution, it exhibited the widest operating temperature window for NH 3 -SCR with >90% NO conversion from 300 to 450 °C. Meanwhile, VCeTi/SiC–C also displayed the improved pore size (8.0 μm), the highest gas permeance (380 m 3 m −2 h −1 ·kPa −1 ) and the lowest filtration resistance. Furthermore, we discovered "defect-compensating effect" of dust in combined removal experiment, where dust particulates contribute to enhanced denitration performance. This work provides critical insights into the surface design of high-performance catalytic membranes for medium-high temperature gas purification applications.
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DOI
高影响因子
危险品化学品经营许可证（带存储）