Journal of Energy Storage
·
2023
·
IF 9.4
Caiping Xu,Chuanyu Jin,Lintao Liu,Yu Qi,Fangjie Xie,Jie Chen,Yaning Chang,Na Du,Shengyang Cheng
Vanadium pentoxide (V 2 O 5 ) is an attractive high-energy cathode material for thermal batteries but is limited by the high solubility and tendency to react with halogenic molten salt. Li x V 2 O 5 (0 < x ≤ 1) are expected to take the place of V 2 O 5 as the promising cathode materials in thermal batteries. In this work, Li x V 2 O 5 were successfully synthesized by the high-efficiency and low-cost method, which uses the molten salt as lithium source and through a brief-time sintered process (900 °C for 15 s). Li x V 2 O 5 /molten salt electrode with CNTs conductive agent exhibits an original discharge voltage with 2.51 V and a specific capacity up to 309.46 mA h g −1 . The high chemical stabilization between Li x V 2 O 5 and molten salt which could increase interfacial structure stabilization and improve the transmission rate of Li + . Besides, CNTs could build the continuous electron transport channels in active cathode inter-particles and improve the utilization rate of Li x V 2 O 5 . This paper not only prepares the Li x V 2 O 5 cathode materials with high specific capacity via a simple method, but also provides insights into the phase evolution process of V 2 O 5 based cathode electrodes during discharge process of thermal batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Tongyu Liu,Linlin Chen,Xin Wang,Yaoguo Huang,Ming Wang,Yali Zhang
V 2 O 5 is considered as a promising cathode material for zinc ion batteries due to its abundance, low-cost, layered structure and high capacity. However, low electronic conductivity, vanadium dissolution accompanied with sluggish ion transport kinetics, severely limit its electrochemical performance. Herein, the polypyrrole-coated V 2 O 5 nanobelts arrays grown on carbon cloth (PPy@V 2 O 5 /CC) are rationally designed and prepared by combination of solvothermal and vapor-phase polymerization process. The resultant flexible PPy@V 2 O 5 /CC electrode delivers a high specific capacity of 276 mAh g −1 at 0.1 A g −1 , an excellent rate capability of 185 mAh g −1 at 10 A g −1 , and extraordinary long-term cycling stability with 76% capacity retention after 8000 cycles at 5 A g −1 , better than V 2 O 5 /CC. The significant enhancement can be attributed to the PPy protective layer, which can simultaneously achieve higher electronic conduction, suppressed vanadium dissolution, enhanced surface pseudocapacitive behavior, and faster Zn 2+ diffusion rate. This work offers a novel strategy for constructing high-performance micro/nano functional composites for electrochemical energy storage system.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Rongguan Lv,Huayu Wu,Zhouheng Jiang,Anyu Zheng,Haiyan Yu,Ming Chen
A highly flexible hydrogel cathode applied in rechargeable aqueous zinc-ion batteries (ZIBs) fabricated by polyvinyl alcohol (PVA), vanadium pentoxide (V 2 O 5 ) and graphene oxide (GO) has been successfully synthesized by repeated freeze-thaw method. The V 2 O 5 /GO hydrogel (VOGH) presented complex 3D cross-linking system and excellent flexibility through hydrogen bonding and inorganic nanosheets reinforcement. The mechanical and electrochemical properties of VOGH are balanced and achieved by adjusting the content of GO (5%), V 2 O 5 (30%), PVA (25%) and water (40%) of the total mass, respectively. From the electrochemical result, the flexible hydrogel cathode displayed a high capacity (240.5 mA h g –1 ) and a good cyclic stability after 200 cycles at 1 A g –1 . Moreover, the electrochemical kinetics exhibite the capacitive control process, which confirm the excellent ion transport to enhance storage performance of ZIBs. The soft package ZIBs using VOGH as cathode and Zn foil as anode display good cycle performance (191.7 mA h g –1 at 1 A g –1 after 1000 cycles) and provide stable power supply at different bending angles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Yatao Yang,Yaqin Hou,Xiaoxiao Ding,Jie Tian,Yifan Li,Zequan Zeng,Jiancheng Wang,Zhanggen Huang
Dioxins are high chlorine, toxic, and persistent organic pollutants that exert significant pressure on both human and the environment. From the analysis of current pollutant removal of the whole life cycle, such as integrated removal of NOx, SO 2 and dioxins in a system, the dioxins oxidation activity as well as the distribution of oxidation products in the presence of SO 2 are still a challenge. In this study, dibenzofuran (DBF) was regarded as a model dioxin compound, and V 2 O 5 /AC was used as a catalyst to investigate the impact of SO 2 on degradation activity and the degradation path of DBF. Various characterization results showed that SO 2 could promote the transformation of DBF to intermediates through a reaction with lattice oxygen and lower the apparent activated energy of DBF catalytic oxidation on V 2 O 5 /AC catalysts. The density functional theory (DFT) calculations confirmed that SO 2 improved the oxidation ability of lattice oxygen on V 2 O 5 /AC. The ethyl hydrogen fumarate intermediate decreased and the small-molecule byproducts increased, providing further evidence that SO 2 accelerates the degradation of DBF and its intermediates. However, the formation of VOSO 4 would inevitably deteriorate the adsorption and oxidation abilities of V 2 O 5 /AC. A model is pioneered to describe the relationship between SO 2 promotion and VOSO 4 inhibition on DBF catalytic oxidation on a V 2 O 5 /AC catalyst. This study is expected to provide theoretical guidance for the collaborative abatement of multi-pollutants in flue gas .
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Cheng Huang,Pei Wu,Yunlong Guo,Yiping Guo
Natural kaolin clay with inherent structures shows huge potential for serving as catalytic carriers. Mesoporous kaolin carrier was obtained by a facile acidification and alkalization treatment, resulting in an extreme enhancement of specific surface area from 16.6 m 2 /g to 303.4 m 2 /g. The V 2 O 5 /mesoporous kaolin composite catalysts realized that nearly completely dibenzothiophene oxidative degraded within 10 min. This excellent catalytic performance should be attributed to the synergistic effect of mesoporous kaolin and well dispersed V 2 O 5 nanoparticles , which can expose more V 5+ /V 4+ Lewis acids and transfer bulky organic sulfides to active sites. The mechanism of oxidation desulfurization was proposed as: the V 2 O 5 active component react with tert-butyl hydroperoxide to form O .- , which oxidizes dibenzothiophene molecules on the active sites to form dibenzothiophene sulfone. The modifications of kaolin and its combination with V 2 O 5 demonstrated in this work are expected to open a new window for applying such abundant and cost-effective clay as catalytic carriers.
研究领域:
催化
·
环境化学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Qiang Li,Yanyi Wang,Ming Yang,Jianhui Zhu,Peixin Zhang,Zonggang Quan,Shichang Sun,Dingtao Ma
Aqueous zinc-ion battery (AZIB) attracts a great attention and becomes a hotspot due to its low cost and high safety in recent years. However, the sluggish transport kinetics of cathode materials is a significant drawback limiting their application. Herein, this work reports a novel VSe 2 /V 2 O 5 · n H 2 O/reduced graphene oxide ternary composite (VSe 2 /V 2 O 5 · n H 2 O/rGO) constructed with an anti-aggregation and porous 3D framework. The as-prepared ternary composite acting as cathode for AZIBs could provide a high capacity of 327.4 mA h g −1 at the current density of 0.2 A g −1 . More importantly, it also possesses excellent rate capability and cyclic stability, which deliver a specific capacity of 254 mA h g −1 at a high current density of 5 A g −1 . In addition, the structural evolution and transport kinetics of VSe 2 /V 2 O 5 · n H 2 O/rGO upon cycling are investigated. Benefiting from the high reversibility of phase evolution and the reduced graphene oxide (rGO) composition, the prepared VSe 2 /V 2 O 5 · n H 2 O/rGO can maintain a robust structure during cycling, improve the transport kinetics and thus displaying an outstanding electrochemical performance. This study offers a new route for designing cathode materials and promoting the development of high-performance AZIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2024
·
IF 17.3
Junyang Tan,Jingwei Wang,Shengnan Li,Huiyu Nong,Shengfeng Zeng,Xiaolong Zou,Bilu Liu,Hui-Ming Cheng
Two-dimensional (2D) transition metal oxides (TMOs) have attracted much interest because of their unusual properties and high-temperature stability. However, due to isotropic bonding in all three dimensions and surface energy constraints, the direct synthesis of 2D TMOs with high crystal quality is challenging. Here, we develop a metal-lattice-heredity (MLH) strategy for synthesizing ultrathin TMO single crystals (e.g., Fe 2 O 3 ) with tunable properties on SiO 2 /Si substrates. The MLH starts with chemical vapor deposition-grown 2D transition metal dichalcogenides (TMDs), followed by unique sequential sulfur-to-oxygen substitution reactions to obtain TMOs, where metal atoms retain their original lattice arrangement and symmetry. Such a process results in growing single-crystalline TMOs coinciding with the morphology and thickness of TMD templates, as supported by in situ optical studies and atomic-resolved imaging. The method can be used to grow many 2D TMOs, including Fe 2 O 3 , V 2 O 5 , Cr 2 O 3 , Co 3 O 4 , and NiO, with band gaps ranging from the near-infrared to the near-UV.
研究领域:
材料科学
·
纳米技术
·
化学
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
·
2022
·
IF 16.383
Kang Zhao,Guilan Fan,Jiuding Liu,Fangming Liu,Jinhan Li,Xunzhu Zhou,Youxuan Ni,Meng Yu,Ying-Ming Zhang,Hui Su,Qinghua Liu,Fangyi Cheng
The hydrophobic internal cavity and hydrophilic external surface of cyclodextrins (CDs) render promising electrochemical applications. Here, we report a comparative and mechanistic study on the use of CD molecules (α-, β-, and γ-CD) as electrolyte additives for rechargeable Zn batteries. The addition of α-CD in aqueous ZnSO4 solution reduces nucleation overpotential and activation energy of Zn plating and suppresses H2 generation. Computational, spectroscopic, and electrochemical studies reveal that α-CD preferentially adsorbs in parallel on the Zn surface via secondary hydroxyl groups, suppressing water-induced side reactions of hydrogen evolution and hydroxide sulfate formation. Additionally, the hydrophilic exterior surface of α-CD with intense electron density simultaneously facilitates Zn2+ deposition and alleviates Zn dendrite formation. A formulated 3 M ZnSO4 + 10 mM α-CD electrolyte enables homogenous Zn plating/stripping (average Coulombic efficiency ∼ 99.90%) at 1 mA cm–2 in Zn|Cu cells and a considerable capacity retention of 84.20% after 800 cycles in Zn|V2O5 full batteries. This study provides insight into the use of supramolecular macrocycles to modulate and enhance the interface stability and kinetics of metallic anodes for aqueous battery chemistry.
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 Materiomics
·
2019
·
IF 0
En-Lai Zhao,Shi-Xi Zhao,Xia Wu,Jing-Wei Li,Lü-Qiang Yu,Ce-Wen Nan,Guozhong Cao
A series of 20Li 2 O-30V 2 O 5 -(50- x) SiO 2 - x B 2 O 3 (mol.%) ( x = 10, 20, 30, 40) glasses were prepared by the traditional melt-quenching synthesis. The amorphous nature of the glasses was determined by XRD, DSC and TEM investigations. FTIR measurement revealed the functional group of obtained glasses. And EDS results confirmed the presence and uniform distribution of elements in the glasses. 20Li 2 O-30V 2 O 5 -40SiO 2 -10B 2 O 3 (LVSB10) sample with the highest V 4+ ratio exhibited the best cycling capacity. In order to further improve cycling stability of LVSB10 sample, ball milling was employed to reduce the particle size. The ball milled LVSB10 sample (LVSB10-b) showed an improved first discharge capacity, cycling stability and rate capacity. EIS measurements showed that ball milling can effectively decrease charge transfer impedance and facilitate Li + ion diffusion. This work provides a new way to explore a new type of cathode materials for lithium ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Lingqin Meng,Lu Wei,Duan Zhang,Jialong Wang,Yali Wang,Suping Cui
Tl poisons VTi catalysts by forming stable V-O-Tl bonds at V O active sites. • WO 3 provides steric shielding and acts as a sacrificial trap for Tl species. • WO 3 drives the electronic oxidation of highly toxic Tl + to less harmful Tl 3+ . • Optimized VWTi catalysts retain ~80% NO x conversion under cement kiln flue gas. Thallium (Tl), an extremely toxic and highly volatile heavy metal, has become the primary cause of rapid deactivation of V 2 O 5 /TiO 2 (VTi) SCR catalysts used in cement kilns. Industrial post-operation analyses consistently show exceptional Tl enrichment on catalyst surfaces—often 2–3 orders of magnitude higher than other heavy metals—resulting in a sharp decline in NO x removal efficiency and raising significant environmental and operational hazards. Motivated by real industrial observations that appropriate amounts of WO 3 substantially enhance the Tl tolerance of VTi catalysts, this study provides a mechanistic explanation for both the poisoning pathway and the mitigation effect. We demonstrate that Tl deactivation originates from its strong affinity for V O active sites, where it forms stable V-O-Tl bonds that collapse Lewis acidity, suppress oxygen-vacancy regeneration, and disrupt the V 5+ /V 4+ redox cycle essential for SCR activity. Through multi-scale characterization and DFT analysis, we reveal that WO₃ alleviates Tl toxicity through a dual synergistic mechanism: steric shielding that limits Tl access to vanadium centers, and oxidation of mobile Tl + to less reactive Tl 3+ , thereby weakening its ability to bind and deactivate V sites. This cooperative electronic-structural modulation preserves both acidity and redox functionality under realistic high-Tl exposure. The mechanistic insights presented here offer a rational foundation for developing durable, Tl-resistant SCR catalysts tailored for hazardous flue gas environments in cement and waste-incineration industries.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yuan Wang,Liying Wang,Mengjiao Zhang,Yufang Sun,Qian Liu,Dingding Guo,Yuxin Zhang,Ting Wu,Zheng Hu,Wenjie Feng,Zhenzhu Cao,Yongfeng Zhang
V2O5/MnV2O6 heterostructure suppresses Jahn-Teller distortion via V-O-Mn interface. • In-situ EIS and DRT analysis reveal the dynamic evolution of charge transfer. • Peak of 234.8 mAh g-1, with 94.8% initial retention over 12 000 cycles at 20 A g-1. Aqueous zinc-ion batteries (AZIBs) are increasingly recognized as frontrunners for next-generation energy storage owing to their high safety and cost advantages. Despite these merits, the large-scale implementation of AZIBs is severely constrained by persistent cathode-related problems, including the Jahn-Teller distortion in manganese-based oxides and the vanadium dissolution as well as poor electrical conductivity in vanadium-based oxides. Herein, we report a novel heterostructure (V 2 O 5 -TRZ/MnV 2 O 6 ) constructed from a vanadium-based layered nanosheet precursor by precisely tuning the manganese doping amount and the calcination temperature. The optimized sample (VMn 1 -350) exhibits a unique flower-like morphology assembled from nanowires, with the heterointerfaces to form a stepped energy band gradient. Mn 3+ and V 4+ are both Jahn–Teller active. Upon Mn doping, electron transfer from V 4+ to Mn 3+ generates V 5+ and Mn 2+ , and their synergistic interplay mutually suppresses excessive Jahn-Teller distortion, thereby stabilizing the structure and enabling ultra-long cycling stability. The heterojunction interface establishes an internal electric field that lowers the charge-transfer barrier and enhances charge transport, thereby greatly mitigating polarization during high-rate Zn 2+ (de)intercalation. Triggered by self-activation at 20 A g –1 , the VMn 1 -350 cathode climbs from an initial 170.3 to a peak of 234.8 mAh g –1 , maintaining 161.5 mAh g –1 after 12 000 cycles-a high 94.8% retention relative to the first stable cycle. Combined with ex situ XRD, XPS, in situ EIS, and electrochemical kinetic analyses, the zinc storage mechanism and structural evolution during the charge-discharge process are systematically elucidated. This work demonstrates that the effective inhibition of Jahn-Teller distortion through near-pure Mn 2+ doping, in synergy with the heterostructure and oxygen-vacancy-mediated charge compensation, is crucial for achieving exceptional structural stability and ultra-stable cycling performance in V-based cathode materials designed for aqueous zinc-ion batteries. Download: Download high-res image (325KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Changyi Zheng,Wenjian Wang,Feng Liu,Zidong Zhang,Yue Zhang,Fei Han,Rui Zhao,Yao Liu,Linjuan Zhang,Weidong Xue
Vanadium pentoxide (V 2 O 5 ) has emerged as a compelling cathode candidate for aqueous zinc-ion batteries (AZIBs) owing to its high theoretical capacity (589 mAh g −1 ). Nevertheless, practical implementation faces critical challenges: (1) intrinsic electronic insulating properties, (2) irreversible structural collapse during Zn 2+ intercalation, and (3) vanadium dissolution in aqueous media, collectively resulting in rapid capacity degradation. While existing modification approaches (e.g., pre-intercalation, nano structuring) partially address these issues, their multi-step processing and high energy consumption hinder scalability. Herein, we propose a novel hybrid electrolyte strategy (ZnSO 4 + Na 2 SO 4 ) that enables spontaneous electrochemical reconstruction of commercial V 2 O 5 during initial cycles (∼200 cycles). The dual-anion synergy precisely controls phase evolution, inducing in situ formation of a Zn 3 V 2 O 7 (OH) 2 ·2H 2 O/Na 2 V 6 O 16 ·3H 2 O dual-phase heterostructure. The optimized cathode delivers exceptional cyclability with 206 mAh g −1 residual capacity after 1500 cycles at 1 A g −1 (ultrahigh 78 % retention), outperforming most reported V-based AZIB cathodes. This simple yet effective electrolyte engineering strategy demonstrates high material utilization from raw V 2 O 5 , establishing a paradigm for sustainable battery manufacturing through electrochemically-driven structural optimization.
研究领域:
电化学
·
储能
·
材料科学
·
电池技术
✓ 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）