JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 11
·1-19
·
IF 2.8
Wang Lu,Zhou Ying-Hua,Liu Xiaoheng
Carbon fibers’ textile (CFT)-based flexible electrodes containing a large number of SnO 2 nanospheres and V 2 O 5 /SnO 2 nanoparticles were obtained by a facile one-pot template method. The homogeneously distributed SnO 2 and V 2 O 5 /SnO 2 exhibit an optimized worm-like mesoporous skeleton and an ideal pore size distribution with a highest surface area of around 295.5 m 2 ·g −1 and 198.0 m 2 ·g −1 , respectively. Using the mesoporous transition/mixed transition metal oxide nanomaterials simultaneously as both positive and negative electrodes, a solid-state flexible asymmetric supercapacitor was fabricated with the V 2 O 5 /SnO 2 @CFT as the positive electrode and SnO 2 @CFT as the negative electrode with well-widened voltage windows. Benefiting from the 3D controllable mesoporous architecture of electroactive species, the assembled supercapacitors delivered a high specific capacitance of 151.3 F·g −1 at 1 A·g −1 , and good rate stability with 70.9% capacitance retention at a higher current density of 5 A·g −1 . Notably, the device can operate in a wide voltage window (0~1.6 V), which enhance substantially the energy density to 193.6 Wh·kg −1 at a power density of 2880 W·kg −1 . These encouraging results are expected to open up a possibility of designing and fabricating the other metal oxide nanomaterials with mesoporous structure and uniform morphology for high-performance supercapacitors and other energy storage devices application.
研究领域:
材料科学
·
纳米技术
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Shengxiang Kang,Jiyao Zhang,Haojie Liang,Jiaming Huang,Zhiwei Ren,Teng He,Xiaohui Liu,Jing Zhang,Yuejin Zhu,Kuan Liu,Gang Li,Like Huang
Perovskite solar cells (PSCs) face challenges in long-term stability, especially under reverse bias. Here, a water-soluble vanadium pentoxide (V 2 O 5-x ) hole-collecting layer (HCL) is introduced into inverted PSCs to improve the photovoltaic performance and multiple-scenario stability under operational, thermal recycle, and reverse bias. V 2 O 5-x annealed at 50–250°C are characterized for multiple physical properties, revealing that 150°C annealing optimizes oxygen vacancy to reduce trap density and improve interface carrier collection. The champion device based on (FA 0.83 MA 0.17 ) 0.95 Cs 0.05 Pb(I 0.95 Br 0.05 ) 3 absorber achieves power conversion efficiency (PCE) of 23.3% with negligible hysteresis (HI = 0.64%) and good stability (retains ∼88% of initial PCE after 1000 h of storage). Further, with Cs 0.05 MA 0.1 FA 0.85 PbI 3 as absorber, the PCE of the device can be further improved to be 25.88% with an HI of 3.26%, superior to the device without V 2 O 5-x (PCE = 24.94%, HI = 5.47%). Moreover, the operational and thermal cycling stability of the device has been obviously improved. Crucially, V 2 O 5-x enhances the reverse breakdown voltage from about |−2| to |−6| V, endowing the device with higher reverse bias stability and tolerance to the shadow effect. These results demonstrate that V 2 O 5-x can simultaneously boost PCE and stability of PSCs, offering a promising route toward efficient and durable PSCs.
研究领域:
光伏技术
·
材料科学
·
能源材料
·
半导体器件
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Tingfeng Shan,Zhen Zhang,Bowen Li,Qi Zhang,Xiangfu Wang,Yusi He,Hongmin Yang
The utilization of commercial vanadium-titanium based catalysts (V 2 O 5 /TiO 2 ) within the selective catalytic reduction (SCR) process is a prominent contributor to the emergence of sulfur trioxide (SO 3 ) in coal-fired boiler environments. The direct modification of vanadium-titanium based catalysts has big potential to be an efficacious strategy for in-situ inhibiting SO 3 formation. This research evaluates the effectiveness of MoS 2 modified V 2 O 5 /TiO 2 catalyst on SO 2 oxidation under diverse conditions, using controlled condensation for SO 3 collection. The results showed that V 2 O 5 -MoS 2 /TiO 2 catalysts outperformed conventional V 2 O 5 /TiO 2 catalysts in inhibiting the oxidation from SO 2 to SO 3 between 200 and 400 °C, with optimal performance at 350 °C. No significant effect was observed on the catalytic oxidation of SO 2 when the O 2 concentration was lower than that of SO 2 , whereas the introduction of appropriate quantities of NO promoted the generation of SO 3 . The excessive inclusion of NH 3 nearly doubled the SO 3 generation rate, increasing it from 0.284 % to 0.434 %. The NO and NH 3 mixture markedly reduced SO 3 generation to 0.085 % at a 62 mL/min mixture concentration, just 30 % of the rate without the mixture. Following the reaction of SO 2 and O 2 , the reacted catalyst exhibited reduced pore volume, enhanced thermochemical stability, and lower susceptibility to SO 2 catalytic oxidation. The addition of low-valence sulfur improves catalyst reducibility, reduces V 5+ –OH reactions in various atmospheres, and decreases the formation of sulphate and gaseous SO 3 . The Mo-S-Mo group also effectively prevents the formation of HSO 4 − intermediates. Additionally, MoS 2 reacts with SO 3 via a reduction reaction, significantly lowering the SO 3 levels. Finally, in diverse atmospheric conditions, the catalysts maintained their V 5+ content and catalytic efficiency, thus improving SCR performance stability.
研究领域:
环境科学
·
催化
·
化学工程
·
能源技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 45
·23213-23224
·
IF 6.895
Yue Jiao,Caichao Wan,Yiqiang Wu,Jingquan Han,Wenhui Bao,He Gao,Yaoxing Wang,Chengyu Wang,Jian Li
A green biomass-derived nanoporous carbon network (NCN) has been prepared and integrated with V2O5 sub-micron bricks (SMBs). The large surface area and high pore volume of the NCN can not only provide abundant sites for electrochemical reactions but also stabilize the structure of the V2O5 SMBs. The NCN@V2O5 SMB composite, acting as a novel cathode material, delivers a high areal capacitance of 786 mF cm−2 at 0.2 mA cm−2 and superior cycling stability with 89.5% capacitance retention after 5000 cycles. Besides, the electrode achieves an ultra-high rate capability (82% capacitance retention as the current density increases from 0.2 to 5 mA cm−2) since the contribution from the non-diffusion-controlled process is estimated to be as high as 95.5%–98.5% according to the kinetic analysis. Furthermore, the micropores are more favorable than the mesopores at lower current densities (0.2–2 mA cm−2), while the contribution of the external surface area becomes more significant for current densities higher than 2 mA cm−2. Moreover, an asymmetric supercapacitor assembled using this cathode and the NCN anode shows superior electrochemical properties, such as wide operating voltage, long cycle life and large energy density (72.2 μW h cm−2). Their excellent electrochemical features and good eco-friendliness confirm the potential of the NCN@V2O5 SMBs for use as supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xingxing Li,Yanan Ma,Yang Yue,Guosheng Li,Chuankun Zhang,Minglei Cao,Yongchen Xiong,Jintao Zou,Yongheng Zhou,Yihua Gao
In recent years, the metal ion hybrid micro-supercapacitor (MSC) comprised of the battery-type Faradaic cathode based electrode and capacitor-type anode based electrode, can realize both high power and energy density, which becomes one of the most hottest areas of energy device. Herein, we demonstrated a zinc-ion hybrid micro-supercapacitor (ZIHMSC) by designing a Ti 3 C 2 T x MXene based electrode as capacitor-type anode and vanadium pentoxide (V 2 O 5 ) based electrode as battery-type cathode. In addition, the polyacrylamide (PAM) hydrogel where ZnSO 4 dissolved was chosen as the electrolyte, which effectively avoids the security risks, unlike other hybrid MSC based on the organic electrolytes. Meanwhile, the flexible ZIHMSC also exhibits well electrochemical properties, displaying a remarkable capacitance (129 mF cm −2 under 0.34 mA cm −2 ), high energy density (48.9 μWh cm −2 at 673 μW cm −2 ) and well-cycle stability (retaining ~ 77% capacitance after 10,000 cycles). This work supports a prospective routine for constructing the new-generation flexible micro-energy storage systems.
研究领域:
能量存储
·
材料科学
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yi Wang,Jun Cao,Jinghe Guo,Jianglei Zhang,Guangsen Liu,Dong Wang,Weimeng Si,Jia Song,Xiuxia Meng,Guangwu Wen
To meet the rapid development of flexible supercapacitors with both high energy density and power density, hybrid ion capacitors like lithium and sodium ion capacitors have attracted more and more attention. However, the hidden danger associated with the using of organic electrolytes limit their practical application. In this regard, a new configuration flexible zinc-ion hybrid supercapacitor (ZHSC) based on free-standing films of RGO-V 2 O 5 (RGV) battery-type cathode and RGO-MXene (RGM) capacitor-type anode in aqueous electrolyte has been designed. The RGM/RGV system consists of specific layered structure, short ion diffusion pathway, high electrical conductivity and exceptional structural stability. As a result, the ZHSC based on RGM/RGV exhibits excellent electrochemical performance, including a large specific capacity of 175 F g −1 at 0.5 mV s −1 , a maximum energy density up to 107.2 Wh kg −1 (321.6 W kg −1 ) and a high capacitance retention of 81% of its initial capacitance (10,000 cycles). Additionally, the ZHSC displays a high specific capacity of 125 F g −1 at 0.5 mV s −1 even in an aqueous gel electrolyte. More importantly, supercapacitors based on the composite films exhibit stable flexibility electrochemical performance. The investigation provides an essential strategy to synthesize composite films for application in high performance flexible hybrid supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Fan Li,Shang Sun,Lina Ma,Wenjing Zhang,Min Zhou,Yu Fu,Hengrui Guo,Xueying Su,Jinliang Shi,Hao Luo,Yang Yang
The intrinsically low electrical conductivity of elemental iodine and its slow redox kinetics represent two significant obstacles that hinder the commercialization of aqueous zinc-iodine batteries. These challenges can be addressed by modulating the adsorption-desorption equilibrium of iodide ions in the active material. This study presented a synergistic strategy of “Electronic Modulation” and “Phase Transition Engineering” to optimize the catalytic adsorption-desorption dynamics. A dual-designed Fe ions doped VO 2- x heterostructure anchored on reduced graphene oxide (Fe-VO 2- x /rGO) is demonstrated to synchronously adjust iodine adsorption and boost redox kinetics. The Fe-induced electronic structure modulation elevated the d-band center of vanadium, creating catalytic sites to promote the desorption of iodide ions and facilitate their diffusion. Concurrently, the phase transition from VO 2- x to V 2 O 5- n within the heterostructure establishes a 3D conductive network, synergizing with rGO to ensure rapid ion/electron transport. This “adsorption-catalysis-transport” collaborative mechanism enabled the Fe-VO 2- x /rGO cathode to achieve an ultrahigh capacity retention of 81.48% after 60,000 cycles at 20 A g −1 , surpassing state-of-the-art zinc-iodine systems. The work provides a paradigm for manipulating interfacial dynamics through electronic and crystallographic dual regulation in conversion-type batteries.
研究领域:
储能
·
材料科学
·
电化学
·
纳米技术
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Ali Asghar,Muhammad Shahid Rashid,Muhammad Hamza,Mohsin Raza,Iftikhar Hussain,Zhangwei Chen
Due to the dense and disordered distribution of nanomaterials, the bulk electrode structure hindered advancement in energy storage devices. However, 3D printing technology supported the layer-by-layer printing process displays interconnected porous structures that provided the continuous pathways for effective diffusion of ions and electrons transportation, offering the kinetic limitations typically associated with electrode thickness. Herein, a functionalized ink composed of MV0.3/AC/PVDF for both bulk and direct ink writing (DIW) printing, enabling the construction of both electrodes with customized structure in 1-layer and 2-layer configuration. In the AASC testing, the 2-layer printed AASC(3DP-2LMV0.3) revealed a significantly high areal capacity up to 1.54 C cm −2 at 6.2 mg cm −2 mass loading. Furthermore, the 3DP-2LMV0.3 delivered a high areal energy density 333.4 μW h cm −2 compare to 3DP-1LMV0.3 and BMV0.3, without compromising areal power density (2.1 mW cm −2 ) at current density (1.24 mA cm −2 ), with the excellent retention of 94.8 % after 5 k charging/discharging cycles. This work highlights the potential of DIW-3D printing as a scalable approach to construct vertically aligned porous structure with thick electrode scaffolds. It offers a promising platform for advanced energy storage applications with reduced solution resistance for ion/electron transport compared to bulk electrode structures.
研究领域:
材料科学
·
储能技术
·
纳米技术
·
增材制造
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 37
·18003-18009
·
IF 9.931
Ruixiang Qu,Weifeng Zhang,Xiangyu Li,Yanan Liu,Tzungyu Shih,Yen Wei,Lin Feng
A co-responsive material is successfully fabricated by coating nano-vanadium pentoxide/octadecylamine (nano-V2O5/ODA) onto a copper mesh via a hydrothermal reaction. “Co-response” means that a material can realize a multi-performance transition under one environmental stimulus. Nano-V2O5 provides the material with a photo-induced wettability transition and reactive oxygen species (ROS) generation properties, while ODA produces a superhydrophobic material in its initial state. As a result, this material can achieve a reversible superhydrophobic/superhydrophilic transition under 254 nm ultraviolet (UV) light. By combining the wettability transition with ROS generation properties, a smart mesh can realize in situ photo-controlled water purification, i.e., the controllable and simultaneous removal of the oil and soluble contaminants. An extra V2O5-coated mesh is used as an auxiliary mesh to improve the oil removal and ROS generation efficiencies. Moreover, the mesh exhibits satisfactory reusability and physical/chemical stability, which is more promising for practical applications such as remote controlled water purification, timed discharge of sewage and microfluidic valves.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2025
·
IF 2.8
Abdudin Geremu TEMAM,Adil Alshoaibi,Chawki Awada,Assumpta Chinwe Nwanya,Fabian I Ezema,P. M. Ejikeme
The development of renewable energy technologies requires effective energy storage devices. Supercapacitors are promising energy storage devices that have attracted considerable attention from researchers due to their fast charging and discharging rates. In this study, V2O5 and f-CNT integrated V2O5 composites (f-CNT/V2O5) were synthesized and studied for electrochemical capacitors' application. While the V2O5 was synthesised using a hydrothermal process. The f-CNT integrated V2O5 (f-CNT/V2O5) composites at various percentages of f-CNT were synthesized using a wet impregnation process. The specific capacitance obtained for V2O5 nanoparticles was 20.78 F.g-1 at 0.1 A.g-1, but f-CNT integrated V2O5 composites showed enhanced specific capacitance of 66.58, 140.94 and 73.15 F.g-1 at 0.1 A.g-1 for f-CNT/V2O5 (10:90), f-CNT/V2O5 (20:80) and f-CNT/V2O5 (30:70) composite, respectively. These results confirmed the enhancement in the supercapacitive performance of V2O5 due to the integration of f-CNT into it. The f-CNT facilitates electron transfer through enhanced conductivity and promote redox reactions through an increased electrode surface area. The best performing f-CNT/V2O5 composite (f-CNT/V2O5 (20:80)) electrode was used to assemble an asymmetrical supercapacitor cell. The f-CNT/V2O5//C device shows a specific capacitance of 261.1 F.g-1 at 1 A.g-1, and 81.8 % of coulombic efficiency for 5000 cycles at 4 A.g-1. Additionally, the assembled device shows a characteristic energy density (52.2 Wh.kg-1) and power density (2400 W.kg-1), which is better than many similar devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 8.3
Wenyao Xue,Ziyue Wang,Hongliang Fu,Guanjie Xue,Jing Zhao,Yue Lian,Zhifeng Wang,Yongfeng Hu,Huaihao Zhang
Four-electron transfer process of oxygen evolution reaction (OER) has become a bottleneck restricting water electrolysis, due to its inherently high kinetic energy barrier. Therefore, the exploration for high-efficiency and long-term stable non-noble metal OER catalysts is crucial for sustainable energy conversion. This work designs a molten salt-mediated ball milling-pyrolysis stepwise treatment to synthesize spongy V 2 O 5 composite Fe-intercalated graphitic nitrogen (N–V 2 O 5 @FeC). Specifically, Fe-intercalated graphite is achieved using the FeCl 3 /KCl molten salt system, a highly conductive FeC substrate being constructed accordingly. Then, NH 3 generated from melamine pyrolysis enables spongy porous structure construction and N-doping. N–V 2 O 5 @FeC catalyst possesss the following advantages: First, spongy porous structure greatly increases exposure of active sites, while Fe intercalation-induced graphite edge defects and Fe–O–V bonds jointly enhance active site density of V 2 O 5 composite, thereby boosting catalyst activity. Second, N-doped carbon network improves electron transport performance, enabling catalyst's charge transfer resistance decline to 19.9 Ω. Moreover, dual stabilization mechanisms of Fe–O–V stable structure and chemical anchoring of V–O–C bonds endow the material with good structural stability under alkaline conditions. In detail, N–V 2 O 5 @FeC reaches 10 mA cm −2 current density at only 299 mV overpotential in alkaline solution, with low Tafel slope (53.0 mV dec −1 ) and 50-h stability.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yun Guo,Hong-Yi Li,Shuo Shen,Jie Cheng,Jiang Diao,Bing Xie
Chromium sludge is a hazardous solid waste which cannot be effectively treated but only piled up and abandoned, causing serious environment pollution and resource wasting. This work proposes an effective novel process to separately recover all resources in chromium sludge via a sustainable way. The obtained acid solving liquid from chromium sludge is desiliconized by cationic flocculant (PCAM) to induce coprecipitation of polysilicate gel and PCAM , which mixture is calcinated to generate the product of white carbon black in purity of 94.35% with a recovery of 92.58%. After desiliconization, V in the solving liquid is selectively extracted by microemulsion (ME), which is recovered as V 2 O 5 in purity of 99.34% with a recovery of 95.53% by the subsequent procedure of stripping-precipitation-calcination. The Fe 3+ in raffinate is reduced to Fe 2+ cations by Na 2 SO 3 , and is then recovered by H 2 C 2 O 4 precipitation to generate the FeC 2 O 4 product in purity of 99.12% with a recovery of 98.25%. Cr 3+ cations in residual solution are recovered by alkaline precipitation and calcination to generate the Cr 2 O 3 product in purity of 98.25% with a recovery of 92.68%. This work provides fresh penetrations into the synchronous detoxification, resource recovery and value-added utilization of hazardous industrial solid wastes.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）