APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Peng Zhou,Guangyao Zhai,Xingshuai Lv,Yuanyuan Liu,Zeyan Wang,Peng Wang,Zhaoke Zheng,Hefeng Cheng,Ying Dai,Baibiao Huang
Constructing a suitable coupling interface to improve the performance is of great significance for the development of high-efficient electrocatalysts. Here, we design and synthesize a Ni 3 N-V 2 O 3 composite via nitriding treatment of NiV-LDH precursor, which exhibits excellent electrocatalytic hydrogen evolution reaction (HER) performance including low potential, fast kinetic rate and high stability. Combined with various characterizations and theoretical calculations, the performance promotion mechanism of Ni 3 N-V 2 O 3 is analyzed in depth. It is proved that the confinement effect and interface coupling effect caused by the introduction of V 2 O 3 can greatly increase the catalytic sites, regulate the charge distribution at the interface, optimize the occupancy of the N 2p orbital, and ultimately improve the electrocatalytic HER performance of Ni 3 N. This work provides a new idea and guidance for the design and preparation of high-efficient catalysts in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 13
·2101955
·
IF 6.389
Anping Tang,Ziqin Liang,Hezhang Chen,Guorong Xu,Haishen Song
A new type of cathodic active material for lithium-ion batteries based on a composite of Li 3 PO 4 and V 2 O 3 is proposed in this work. Although the V 2 O 3 component is almost inactive in the voltage range of 2–4.5 V versus Li + /Li, the mixture of the two components can deliver a larger reversible specific capacity of ≈190 mA h g −1 in the voltage range of 2–4.5 V at a current density of 15 mA g −1 . X-ray photoelectron spectroscopy data and cyclic voltammetry data suggest that the vanadium ions are probably oxidized and reduced repetitively upon cycling and that the V 3+ ions are partially oxidized to V 4+ and even V 5+ ions during charging to 4.5 V. This distinctive lithium-ion uptake and release phenomenon, in which Li 3 PO 4 functions as a lithium source of surface conversion reaction, will introduce a new path for designing unique cathodic active materials for lithium-ion batteries.
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
·
2021
·
IF 13.273
Zhongzheng Qin,Xin Zhou,Yongyuan Hu,Jian Pei,Gang Chen
V 2 O 3 is a promising candidate for sodium-ion batteries (SIBs) anode. Compared with common rhombohedral V 2 O 3 , cubic V 2 O 3 is a unique metastable phase with ordered oxygen vacancies and high energy state, but lacks study in the field of electrochemical energy storage. Herein, a metastable cubic V 2 O 3 embedded in N-doped carbon nanosheets (c-V 2 O 3 @NC) is synthesized by a simple molten salt method with urea assisted. Ab initio molecular dynamics calculations demonstrate that cubic V 2 O 3 possesses reduced Na + diffusion activation energy. Benefiting from the novel metastable structure and multiple modifications, the c-V 2 O 3 @NC shows enhanced ion diffusion kinetics, robust structure and improved conductivity. As a consequence, the c-V 2 O 3 @NC exhibits high specific capacity, ultralong cycle life and ultrahigh rate capability (274 mAh g −1 even after 3000 cycles at 5 A g −1 ) as anode material for SIBs. This work shows a feasible synthesis and synchronous modification for metastable materials to electrical energy storage applications.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xindou Yu,Jin Zhang,Xiaomin Zhang,Kedi Cai
The potassium‑oxygen battery (KOB) as the only new system in metal-air batteries does not generate singlet oxygen ( 1 O 2 ). It is a novel high-energy-density storage device which has attracted widespread attention. However, the low efficiency of potassium ion and oxygen transfer in KOB, along with slow kinetics, results in poor cycling stability. For this reason, a new composite catalytic material with a multicomponent Mo@VN/V 2 O 3 -Co 3 O 4 in cathode of KOB has been designed and prepared. The homologous heterostructure formed between VN and V 2 O 3 exhibits a good lattice match, enhancing the carrier mobility and electrochemical activity of the electrode, thereby increasing the discharge capacity of the KOB. The multicomponent active interface formed between Co 3 O 4 and VN/V 2 O 3 stimulates more electrons to participate in redox reactions, and the synergistic catalytic effect promotes the reversible decomposition of KO 2 , improving the cycle life of the KOB. The doping of Mo enables Mo 6+ to enter the V 2 O 3 lattice, replacing some V δ+ , which creates crystal defects that facilitate the rapid diffusion of K + and O 2 in the electrode. Final, the Mo@VN/V 2 O 3 -Co 3 O 4 is used as a cathode catalyst of KOB, shown discharge specific capacity of 1899.61 mAh·g −1 with a cycle life >170 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Energy Research
·
2020
·
IF 2.746
Wang Ning,Song Qing-Song,Liu Wen-Jing,Zhang Jian
A new ringlike V2O3 architecture was successfully synthesized by a template-free hydrothermal method, and the sulfur ions-assisted central-etching mechanism of the ringlike structure was proposed. Herein, as a proof-of-concept experiment, taking V2O3 nanorings as non-noble-metal-free nitrogen reduction reaction (NRR) catalysts, they show desired electrocatalytic performance toward NRR under ambient conditions (maximum yield: 47.2 µg h−1 mgcat.−1 at −0.6 V vs. reversible hydrogen electrode, maximum Faraday efficiency: 12.5% at −0.5 V vs. reversible hydrogen electrode), which is significantly higher than those of noble metal-based catalysts.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Haolong Nie,Jing Wen,Chaoqun Shang,Xiaomin Wang,Pu Hu
Zinc-ion batteries (ZIBs) are promising candidates for next-generation energy storage systems due to their high energy density and low cost. However, challenges such as poor cycling stability and sluggish kinetics hinder their practical application. In this study, we propose a novel heterostructure composed of microsphere V2O3 integrated with vanadium nitride (VN) and uniformly coated with carbon (V2O3/VN@C) to address these challenges. The optimized V2O3/VN@C heterostructure exhibits excellent stability during cycling within a voltage window of 0.1–1.3 V (vs Zn/Zn2+). The V2O3/VN@C electrode exhibits a large specific capacity (278 mA h g–1 at 200 mA g–1), remarkable cycling stability (96% capacity retention after 400 cycles at 200 mA g–1), improved rate capacity (141 mA h g–1 at 15 A g–1), and higher energy density besides. Furthermore, the investigation of the Zn-ion storage mechanism in the V2O3/VN@C electrode reveals that the heterostructure effectively enhances the conductivity and inhibits the phase transition of V2O3 to a high-valence state. During charging and discharging, the heterostructure facilitates the desolvation process of Zn[H2O]62+ and accelerates the charge transfer kinetics of the electrodes. The proposed strategy provides new opportunities for designing long-cycling and high-energy cathodes for AZIBs and beyond.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2024
·
IF 5.9
Weiyuan Liu,Wentao Wang,Jiahui Zhou,Hongxia Deng,Shanshan Tong
Treatment of precious metals in electronic waste has attracted tremendous attention and is essential for both environmental protection and resource sustainable development. In this study, a novel adsorbent for precious metal ions, V 2 O 3 spiny hollow nanospheres (p-V 2 O 3 SHN), was synthesized through a one-step hydrothermal-assisted methodology for the adsorption of Au(III), Ag(I), Pd(II), and Pt(IV) from the leaching solution of electronic waste. The results reveal that the p-V 2 O 3 SHN hierarchy was successfully constructed with a hollow structure and dense spiny morphology. The prepared p-V 2 O 3 SHN can effectively remove precious metal ions such as Au(III), Ag(I), Pd(II), and Pt(IV), with the selective capture order being Au(III) > Ag(I) > Pt(IV) > Pd(II) > other metal ions. This superior adsorption capability can be attributed to the multi-diffusible, intermingled composition, and numerous active sites decorating the p-V 2 O 3 SHN hierarchy, facilitating the uptake of Au(III), Ag(I), Pd(II), and Pt(IV) ions from electronic waste. The Langmuir model provided a better fit for the uptake process, revealing maximum uptake capacities of 833.33 mg/g for Au(III), 370.37 mg/g for Ag(I), 77.51 mg/g for Pd(II), and 42.01 mg/g for Pt(IV) on p-V 2 O 3 SHN. Remarkably, p-V 2 O 3 SHN exhibited a robust affinity for the adsorbate due to the presence of surface defects and reduction. The new p-V 2 O 3 SHN also demonstrated good reusability for three sorption cycles, highlighting its potential for electronic waste treatment. Due to its facile synthesis and excellent efficiency, hierarchical p-V 2 O 3 SHN presents itself as a promising candidate for the selective uptake of Au(III), Ag(I), Pt(IV), and Pd(II) from electronic waste.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
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
ADVANCED POWDER TECHNOLOGY
·
2022
·
IF 4.969
Yongjie Liu,Fupeng He,Qingqing Hu,Qingyun Huang,Xuyang Liu,Zhixiong You,Guibao Qiu,Xuewei Lv
Vanadium nitride (VN) has a wide range of application because of its excellent properties, which include high hardness, outstanding wear resistance, and good electrical conductivity. This study investigated the mechanism for the reduction and nitridation of V 2 O 3 with clean ammonia gas, using both experimental and density functional theory (DFT) studies. The experimental results indicated that V 2 O 3 could easily be converted to VN in an ammonia atmosphere at 500–800 °C. The reaction pathway to form VN was V 2 O 3 → VN x O 1– x → VN. Increasing the reaction temperature was conducive to an increase in the N content of VN x O 1– x . A DFT study systematically revealed the adsorption of NH x and H on the V 2 O 3 (0001) surface. The results showed that with the dissociation of NH 3 , its adsorption energy on the surface of vanadium oxide became higher. The whole reaction process could be divided into NH 3 decomposition on the surface and the formation of H 2 O(g). Both of these were endothermic reactions, and the reaction step of generating H 2 O(g) needed a higher temperature. The bonding of V 3c –N facilitated the desorption of O 3c atoms to form H 2 O(g), which explained why VN can be prepared by the reaction of NH 3 and V 2 O 3 .
研究领域:
材料科学
·
化学工程
·
理论化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ziqi Liu,Hua Ning,Ruojiang Liu,Sizhi Ding,Jiakun Yang,Yuanxin Tan,Yi Fan,Renhuan Li,Peilin Qing,Haizhen Liu,Jin Guo,Zhiqiang Lan
The application prospects of MgH 2 as a potential solid hydrogen storage material are limited by its stable thermodynamic properties and slow hydrogenation/dehydrogenation kinetics. In this study, a ternary heterogeneous composite material V 2 O 3 -TiO 2 -rGO (V-T-rGO) was synthesized using the ultrasonic hydrothermal method and doped into MgH 2 through ball milling to improve its hydrogen storage performance. The experimental results demonstrated that the MgH 2 + V-T-rGO samples exhibit superior hydrogen storage properties compared with single-doped V 2 O 3 , TiO 2 , rGO or V-T materials. Specifically, it can uptake hydrogen at room temperature, and adsorbs 5.00 wt% H 2 in just 4 min at 150 °C, and releases 5.87 wt% H 2 within 6 min at 325 °C, demonstrating a faster reaction rate and successful hydrogen absorption. Additionally, the hydrogenation/dehydrogenation activation energies of MgH 2 + V-T-rGO samples are measured at 27.1/72.3 kJ·mol −1 , representing a reduction of 51.2/59.2 kJ·mol −1 compared to MgH 2 alone. Mechanistic analysis revealed that the multiphase composite system produced synergistic catalytic effects, providing abundant active sites and hydrogen diffusion channels to enhance the hydrogen storage performance of MgH 2 . This study presents an innovative approach for constructing transition metal oxide heterostructured materials and holds significant reference value for applications in the field of hydrogen storage.
研究领域:
材料科学
·
能源存储
·
催化
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 10
·1387-1393
·
IF 4.446
Jiabao Zhang,Qingwei Li,Zhenhua Liao,Lei Wang,Juan Xu,Xiaochuan Ren,Biao Gao,Paul K. Chu,Kaifu Huo
Graphical In situ carbonization : V 2 O 3 -intercalated N-doped graphene (NG) nanobelts are synthesized by one-step controlled pyrolysis of inorganic-organic hybrid VO x /3-phenylpropylamine nanobelts under Ar and the obtained V 2 O 3 /NG nanobelts possess well-defined 0D-in-1D morphology and excellent electrochemical performance as anodes for alkali-ion batteries. V 2 O 3 is a promising anode material for lithium- and sodium-ion batteries due to its high theoretical capacity and natural abundance. However, the low conductivity, sluggish ion reaction kinetics, and large volume change limit the rate and cycling stability in batteries. In this work, the V 2 O 3 -nanoparticles-intercalated N-doped graphene (V 2 O 3 /NG) hybrid is prepared by one-step controlled pyrolysis of inorganic-organic hybrid VO x /3-phenylpropylamine nanobelts under Ar. The intercalated 3-phenylpropylamine molecules are carbonized in situ into the NG layers and the sandwiched VO x layers are converted into 10–20 nm V 2 O 3 nanoparticles. The V 2 O 3 /NG nanobelts possess well-defined 0D-in-1D morphology and excellent electrochemical performance such as high reversible capacities of 435 mAh g −1 at 100 mA g −1 over 250 cycles for Li-ion storage and 154 mAh g −1 at 500 mA g −1 over 500 cycles for Na-ion storage. The well-defined 0D-in-1D hybrid V 2 O 3 /NG structure with small V 2 O 3 nanoparticles, interconnected nanochannels, and conductive NG layers offer abundant electrochemical active sites leading to fast Li + and electron transport and excellent alkali-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
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
危险品化学品经营许可证（带存储）