ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Yanli Zhou,Yanlu Li,Jing Yang,Jian Tian,Huayun Xu,Jian Yang,Weiliu Fan
VS4 as an electrode material in lithium-ion batteries holds intriguing features like high content of sulfur and one-dimensional structure, inspiring the exploration in this field. Herein, VS4 submicrospheres have been synthesized via a simple solvothermal reaction. However, they quickly degrade upon cycling as an anode material in lithium-ion batteries. So, three conductive polymers, polythiophene (PEDOT), polypyrrole (PPY), and polyaniline (PANI), are coated on the surface to improve the electron conductivity, suppress the diffusion of polysulfides, and modify the interface between electrode/electrolyte. PANI is the best in the polymers. It improves the Coulombic efficiency to 86% for the first cycle and keeps the specific capacity at 755 mAh g–1 after 50 cycles, higher than the cases of naked VS4 (100 mAh g–1), VS4@PEDOT (318 mAh g–1), and VS4@PPY (448 mAh g–1). The good performances could be attributed to the improved charge-transfer kinetics and the strong interaction between PANI and VS4 supported by theoretical simulation. The discharge voltage ∼2.0 V makes them promising cathode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiaxun Yang,Hailong Yu,Feng Zhen,Zhongyang Zhang,Liping Wang,Lingling Zhang,Liubin Ben,Bin Qu,Xuejie Huang
Electronically and ionically conductive sulfur-based cathode materials play a pivotal role in improving the electrochemical capabilities of high-energy rechargeable batteries. Among these, vanadium tetrasulfide (VS 4 ) stands out for its remarkable specific capacity and cost-effectiveness, marking it as a notable contender. However, its intrinsic low conductivity and significant volume expansion during cycling pose challenges for its adoption in rechargeable batteries. Here, we introduce a “sea urchin”-like VS 4 cathode material, characterized by a microsized core coupled with nanosized spines. This distinctive architecture is used to exploit the benefits of both micro- and nanosized electrode materials. The nano-sized spines, abundant in active sites, facilitate rapid electron and lithium-ion transport, thereby boosting catalytic activity. Moreover, the distinctive architecture offers ample space to accommodate volume expansion during cycling. The "sea urchin"-like VS 4 cathode demonstrates a substantial specific capacity of approximately 994.1 mAh g −1 or 1671.7 Wh kg −1 , maintaining a capacity of 670.0 mAh g −1 after 100 cycles at a 0.5 C rate. Furthermore, the unique morphology of the VS4 cathode ensures structural stability and minimal volume change during use, owing to the sufficient internal space. Our study facilitates potential of morphological innovations to enhance the electrochemical performance of electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 12
·5267-5273
·
IF 2.8
Zhao Shiqi,Liu Jingxuan,Wu Xiang
At present, lithium-ion batteries are widely used in many aspects in mankind society, but considering the cost and safety factors, aqueous multivalent ion batteries are much suitable for large-scale applications. Among them, aqueous zinc ion batteries (AZIBs) possess the advantages of high safety, environmental friendliness and large theoretical capacity. In this work, we prepare VS 4 nanosheets as cathode electrodes for zinc-ion batteries. The assembled batteries achieve an excellent discharge capacity and rate performance in 3 M Zn (CF 3 SO 3 ) 2 electrolyte. It presents a reversible capacity of 225.43 mAh g −1 at 0.5 A g −1 . In addition, it still can maintain a capacity retention rate of 81% after 700 cycles at 5 A g −1 .
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
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Abubakar Abdussalam,Hongzhan Liu,Islam Mohamed Mostafa,Baohua Lou,Dmytro Viktorovych Snizhko,Yuriy Tymofiiovych Zholudov,Wei Zhang,Guobao Xu
Chemiluminescence (CL)-based analytical methods utilize luminophores that need to be activated with an oxidizing agent to trigger CL emission. Despite its susceptibility to decomposition when exposed to external light or trace metals, hydrogen peroxide (H2O2) has been widely used to develop chemiluminescent methods due to the limited number of suitable alternatives for activating chemiluminescent luminophores. Also, analytical methods based on the well-known luminol/H2O2 CL system have low sensitivity. Dissolved oxygen (DO) is a naturally abundant and environmentally benign alternative oxidant for luminol and other CL luminophores. However, DO alone is inactive and needs an efficient catalyst or a coreaction accelerator for its activation. Because of the narrow bandgap of VS4 (ca. 1.12 eV), it can facilitate fast electron-transfer kinetics with an acceptor molecule such as DO. Here, we introduce vanadium tetrasulfide (VS4) to boost CL for the first time. Under the optimized conditions, VS4 nanodendrite catalyzes the generation of reactive oxygen species by activating DO which subsequently reacts with luminol to generate intense CL. It enhances the CL intensity of luminol/DO by about 10,000 times. Surprisingly, hemin remarkably quenches the generated CL of luminol/DO/VS4 nanodendrites, which is completely opposite to its typical enhancement of luminol CL. Based on the remarkable concentration-dependent quenching of the luminol/DO/VS4 nanodendrite CL by hemin, we have developed a sensitive CL method that can selectively detect hemin in the linear concentration range of 1–250 nM and achieved a limit of detection of 0.11 nM. The practical utility of the developed method was demonstrated by the determination of hemin in a pharmaceutical drug for the treatment of acute intermittent porphyria and in human serum. This study demonstrates that VS4 holds great promise in analytical method development.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 46
·21671-21680
·
IF 7.233
Wenbin Li,Jianfeng Huang,Liangliang Feng,Liyun Cao,Shuwei He
Surface structure plays a decisive role in the surface capacity and electrochemical kinetics of rechargeable batteries. Tuning the surface structure of building blocks has been considered to be a new effective strategy to promote the electrochemical performance of 3D self-assembled nanoarchitectures. Herein, VS4 microspheres assembled from the nano-units with different crystallinities are synthesized via a facile template-free hydrothermal method. The results show that the electrochemical performance of VS4 microspheres as anode materials for sodium-ion batteries (SIBs) largely depends on their crystallinity, and a VS4 electrode with the lowest crystallinity delivers a high reversible capacity of 412 mA h g−1 at 0.2 A g−1 after 230 cycles and that of 345 and 293 mA h g−1 even at 1.0 and 2.0 A g−1, respectively. The insertion mechanism is revealed within the selected voltage window of 0.50–3.00 V. Further analysis suggests that decreasing the crystallinity of the nano-units can dramatically enhance the pseudocapacitive behavior of VS4 microspheres, which takes the main responsibility for the improvement of sodium storage properties. This work can provide a new insight for the exploration and design of high-performance anodes for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Qiang Shu,Xiaojiang Hou,Kaiming Hou,Xiaohui Ye,Qianhong Cao,Danting Li,Guoquan Suo
Hybrid magnesium-lithium batteries (MLIBs) have become the focus of research due to the advantages of combining a magnesium metal anode (free dendrite) and Li-driven reaction cathode (fast ion diffusion rate). VS 4 with large interchain space can be used as a potential cathode for MLIBs, but its low conductivity and weak structural stability limit the development of MLIBs. In this work, MoS 2 was introduced into VS 4 to induce the generation of abundant sulfur vacancies , which improved the structural stability and Li + ion transport properties of VS 4 . The VS 4 /MoS 2 cathode retains stability and an impressively high reversible capacity of 581.7 mAh·g −1 after 100 cycles, corresponding to a capacity retention of 98.99 % (compared with the second cycle). Meanwhile VS 4 /MoS 2 still has 472.64 mAh·g −1 at high current density of 1500 mA·g −1 , which is much higher than that of NF-VS 4 (11.9 mAh·g −1 ) and VF-VS 4 (29.8 mAh·g −1 ). This work points the way to ameliorate Mg-based rechargeable 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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xin-ya Bu,Yan-li Zhu,Yu Xia,Bin-chao Shi,Shu Zhang,Xiao-yu Wei,Jing Luo,Yi Zhang,Ting Quan
Thermal batteries are a type of thermally activated reserve batteries, where the cathode material significantly influences the operating voltage and specific capacity of the battery. In this work, VS 4 -VO 2 has been synthesized through the hydrothermal method and used as the cathode material for thermal batteries. Firstly, the material with the VS 4 crystallinity is obtained at 170 °C and the mass percentages of VS 4 /VO 2 are 63.1 % and 36.9 %, respectively. The formation mechanism of VS 4 -VO 2 has been proposed based on in-situ ultraviolet (UV) spectrum, which shows that the hydrolysis product S 2- under alkaline conditions promotes the formation of VS 4 . To further improve the conductivity of the material, the reduced graphene oxide (rGO) has been introduced into VS 4 -VO 2 nanomaterials. When applied in thermal batteries, the rGO-VS 4 -VO 2 composite exhibits a voltage plateau of approximately 2.4 V and a discharging specific capacity of 327 mAh/g with the cut-off voltage of 1.5 V at 50 mA and 350°C, which are higher than those of VS 4 -VO 2 . Furthermore, the discharge mechanisms of rGO-VS 4 -VO 2 in thermal batteries have been analyzed, which indicates that VS 4 -VO 2 involves two processes of phase transformation, including the intercalation process and conversion process. The results confirm rGO-VS 4 -VO 2 as a promising cathode material for thermal batteries.
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
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jian Wang,Di Zhang,Zhaojin Li,Qiujun Wang,Huan Wang,H.J. Woo,S. Ramesh,Yachuan Shao,Bo Wang
Transition metal polysulfides/oxides typically perform high reversible capacities in sodium-ion batteries/capacitors (SIBs/SICs), but low conductivity and slow redox reaction kinetics are still the main challenges for achieveing fast kinetics. Here, we construct the VS 4 /Nb 2 O 5 /GO composite structure, which can promote the overall conductivity and structural stability through the GO and VS 4 bonding (V-C and S-C) on the surface. Meanwhile, the chain-like VS 4 and Nb 2 O 5 connected with the V-O chemical bond can accelerate the electron and ion transfer internally, thus enabling the internal structure exposed during the activation process. Additionally, the bonding of VS 4 and Nb 2 O 5 is calculated by density functional theory (DFT), indicating that the strong metallic properties of the composite. When as the anode material of SIBs, the specific capacity of 268.8 mA h g −1 can be maintained after 2000 cycles at a current density of 10 A g −1 . After that, SICs are assembled using activated carbon (AC) as the cathode, which exhibit 58.01 Wh kg −1 at high power density of 3800 W kg −1 . This unique composite structure design can provide a reference for achieving fast electron and ion transport both internally and externally to the electrode material.
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
ChemSusChem
·
2019
·Vol. 12
·期 23
·5183-5191
·
IF 7.804
Wenbin Li,Jianfeng Huang,Ruizi Li,Liyun Cao,Xifei Li,Shaoyi Chen,Liangliang Feng
Graphical Ordered channels, improved performance : Ordered and bridged nanoblocks-self-assembled VS 4 microspheres are prepared through a facile one-step hydrothermal method. The synergistic effect of (1 1 0)-oriented and bridged structures that collectively construct multidimensional Na + transfer channels in the VS 4 microspheres leads to an electrode that shows dramatically enhanced rate capability when used in Na-ion batteries. Developing 3 D self-assembled nanoarchitectures with well-defined crystal structures is an effective strategy to enhance the electrochemical performances of electrode materials. (1 1 0)-oriented and bridged-nanoblocks self-assembled VS 4 microspheres are controllably synthesized by a facile one-step hydrothermal method. The (1 1 0)-bridged structure sets up open pathways for Na + diffusion among nanoblocks, and the (1 1 0)-oriented structure provides unobstructed pathways for Na + diffusion in the nanoblocks, which collectively constructs multidimensional Na + transfer channels in the VS 4 microspheres, promoting the electrochemical kinetics. As an anode for Na-ion batteries (SIBs), this material exhibits pseudocapacitive Na + storage and excellent rate capability, delivering high capacities of 339 and 270 mAh g −1 at rates of 0.1 and 2.0 A g −1 , respectively, with a capacity retention of 79 % in the voltage window of 0.5–3.0 V. In particular, the reversible capacity reaches 575 mAh g −1 after 300 cycles even at 1.0 A g −1 in the voltage window of 0.05–3.0 V, outperforming those of the ever-reported VS 4 -based anode materials. This work presents an effective strategy to the exploration and design of high-performance anodes for SIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Haoqiang Wang,Pengju Wang,Wei Gan,Lijie Ci,Deping Li,Qunhui Yuan
Aiming to improve the sluggish ion insertion/extraction at the battery-type anode in lithium-ion/sodium-ion hybrid capacitor (LIC/SIC), herein, a VS 4 @L-Ti 3 C 2 T x composing of VS 4 nanoarrays and MXene with enlarged interlayer spacing is developed through a facile hydrothermal approach. Benefiting from the merits of building blocks, the VS 4 @L-Ti 3 C 2 T x based lithium-ion half-cell exhibits superior specific capacity (1328 mAh g −1 after 170 cycles at 0.1 A g −1 ), rate performance (808 mAh g −1 after 10 cycles at 20 A g −1 ) and cycling stability (721 mAh g −1 after 500 cycles at 1.0 A g −1 ), surpassing most of the reported VS 4 based counterparts. The sodium-ion half-cell with VS 4 @L-Ti 3 C 2 T x anode also shows good performances. Moreover, LIC and SIC based on VS 4 @L-Ti 3 C 2 T x anodes deliver high energy densities of 122.5 Wh kg −1 and 117.0 Wh kg −1 at a low power density 100.3 W kg −1 , respectively. Additionally, they exhibit excellent cycling lifespans with capacity retention of 60% after 20000 cycles for LIC at a high current rate 1.0 A g −1 , outperforming most of the reported analogues. This study may shed light on the development of other layered anode materials for energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Wenbin Li,Jianfeng Huang,Ruizi Li,Liyun Cao,Xifei Li,Liangliang Feng,Shaoyi Chen
Development of three-dimensional self-assembled hollow nanoarchitectures combining functional shells and inner voids is an important approach for realizing high-rate and long-life battery electrodes. As a potential high-performance anode for sodium-ion batteries (SIBs), (1 1 0)-bridged nanoblocks self-assembled VS 4 hollow microspheres (PNBH-VS 4 ) are controllably synthesized by a facile one-step hydrothermal method. The (1 1 0)-bridged structure constructs the Na + conducting channels and e − transfer paths among nano-grains and nanoblocks, and the self-assembled hollow structure presents the double space physical entrapment effect for the excessive volume change of nanoblocks, which synergistically improve the Na + storage kinetics and structure stability. When employed as an anode for SIBs, PNBH-VS 4 electrode exhibits the superior rate capability and long cycling life, outperforming those of the ever-reported VS 4 -based anode materials. At 0.2, 0.5, 1.0 and 2.0 A g −1 , the capacity can reach 629, 564, 428 and 400 mAh g −1 after 250, 200, 350 and 700 cycles, respectively. Even at 5.0 A g −1 , the capacity can still stabilize at 309 mAh g −1 after 1000 long cycles. In addition, it is revealed that PNBH-VS 4 electrode undertakes the insertion and conversion reaction in the potential range of 0.50–3.00 and 0.05–0.50 V, respectively, where the main capacity contribution originates from the insertion reaction. Meanwhile, PNBH-VS 4 electrode exhibits better insertion reversibility at lower current densities and conversion reversibility at higher current densities during cycling, respectively.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xu Zhang,Jiabao Bai,Yana Liu,Yunfeng Zhu,Jiguang Zhang,Jun Wang,Xiaohui Hu,Rui Shi
Rechargeable Mg Li hybrid batteries (MLHBs) have gained ever-increasing attention owing to their advantages of high theoretical energy density, rich natural sources, and rapid ion intercalation kinetics. Nevertheless, the improvement of MLHBs performance is still seriously plagued by the lack of advanced cathode materials with high reversible capacity and long cycle lifespan. Herein, we have rationally designed an appealing heterostructure consisted of VS 2 microflower with expanded interlayer partially embedded into VS 4 microsphere ( E -VS 2 /VS 4 ) through a facile solvothermal reaction, serving as cathodes for MLHBs. The electrochemical results coupled with systematic kinetic investigations confirm that the synergistic effects of heterointerfaces and sulfur vacancies can facilitate charge transfer, provide rich reaction active sites, and enhance ion transport kinetics. Additionally, theoretical calculations reveal significant charge redistribution at the interface regions, which facilitates electron transfer and ion migration. Consequently, the MLHBs based on the E -VS 2 /VS 4 cathode manifest high reversible capacity (227.2 mAh g −1 at 200 mA g −1 after 70 cycles), excellent energy density (549.9 Wh kg −1 ), and ultralong cycling lifespan (123.3 mAh g −1 after 3000 cycles at 4000 mA g −1 ). Moreover, the ion storage behavior and phase evolution mechanism of E -VS 2 /VS 4 are systematically investigated by comprehensive ex-situ characterizations. This work provides an effective strategy in the rational design of cathode materials with heterointerfaces and vacancies for constructing high-performance metal-ion batteries.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）