IONICS
·
2023
·Vol. 30
·期 3
·1457-1467
·
IF 2.8
Xu Wengang,Zhang Xiaonan,Li Junhao,Chen Xiaobo,Lan Lin,Zhang Jun,Ling Francis Chi-Chung,Ru Qiang
The scaffolded hierarchical CeVO 4 /V 2 CT x -MXene composite is harvested to boost the performance of vanadium oxides in aqueous zinc-ion batteries. Benefiting from the high electronic-ion conductivity of V 2 CT x -MXene and the multilayered structure of the composite, CeVO 4 /V 2 CT x -Mxene cathode depicts the advantages of the acceptable zinc storage and ionic reaction kinetics. Compared with pure CeVO 4 , CeVO 4 /V 2 CT x -MXene cathode shows a reversible discharge capacity of 295.0 mAh g −1 at 1 A g −1 , capacity retention of 81.6% over 3000 cycles at 5 A g −1 , and good high-rate performance of 233.5 mAh g −1 at 8 A g −1 . The quasi-solid-state batteries of CeVO 4 /V 2 CT x -MXene demonstrate well mechanical deformability and good cycling performance. This work provides a reference for solving the problem of vanadium-based materials for aqueous zinc-ion batteries.
研究领域:
材料科学
·
能量存储
·
电化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Bo Zhang,Yanrong Han,Yanrong Chen,Chenyu Wang,Guozhen Fang,Shuo Wang
A novel molecularly imprinted electrochemical sensor (MIECS) is successfully prepared for the chlortetracycline (CTC) determination in food, based on a gold‑platinum ruthenium/vanadium carbide (Au-PtRu/V 2 CT x ) nanocomposite integrated with a molecularly imprinted polymer (MIP) film. The incorporated nanocomposite, featuring excellent electron transport properties, enhances the current response owing to the synergistic effect between the Au-PtRu nanoalloy (NA) and V 2 CT x MXene. Following a one-step electropolymerization process and the efficient removal of template molecules, imprinted cavities are formed on the imprinted electrode (MIP/Au-PtRu/V 2 CT x /GCE) surface, enhancing the targeted recognition of CTC molecules. Under optimized conditions, the sensor exhibits a broad linear range from 1 to 120 μM with a low detection limit of 0.16 μM (S/N = 3). Besides, the sensor demonstrates excellent selectivity, reproducibility, reusability and stability. Its practical applicability is further validated through CTC detection in food samples, yielding satisfactory spiked recoveries (83.3–93.6 %), which are consistent with high-performance liquid chromatography (HPLC) results.
研究领域:
分析化学
·
食品安全
·
纳米技术
·
电化学
·
高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Tianyi Zhu,Qiukai Tang,Yanbo Zeng,Shijie Chen,Yiwen Yang,Hailong Wang,Jianrong Chen,Longhua Guo,Lei Li
A novel fluorescence aptasensor of prostate-specific antigen (PSA) was established using few-layer vanadium carbide (FL-V 2 CT x ) nanosheet as a quencher. First, FL-V 2 CT x was prepared by the delamination of multi-layer V 2 CT x (ML-V 2 CT x ) with tetramethylammonium hydroxide. The aptamer-carboxyl graphene quantum dots (CGQDs) probe was prepared by combining the aminated PSA aptamer and CGQDs. Then, the aptamer-CGQDs were absorbed onto the surface of FL-V 2 CT x by hydrogen bond interaction, which led to the decrease in fluorescence of aptamer-CGQDs due to photoinduced energy transfer. After addition of PSA, PSA-aptamer-CGQDs complex was released from FL-V 2 CT x . The fluorescence intensity of aptamer-CGQDs-FL-V 2 CT x with PSA was higher than that without PSA. The FL-V 2 CT x -based fluorescence aptasensor provided a PSA detection linear range from 0.1 to 20 ng mL −1 with detection limit of 0.03 ng mL −1 . The ΔF value of fluorescence intensities for aptamer-CGQDs-FL-V 2 CT x with and without PSA was 5.6, 3.7, 7.7, and 5.4 times of ML-V 2 CT x , few-layer titanium carbide (FL-Ti 3 C 2 T x ), ML-Ti 3 C 2 T x and graphene oxide aptasensors, respectively, indicating the advantage of FL-V 2 CT x . The aptasensor had high selectivity for PSA detection compared with some proteins and tumor markers. This proposed method had convenience and high sensitivity for PSA determination. The determination results of PSA in human serum samples using the aptasensor were consistent with those by chemiluminescent immunoanalysis. The fluorescence aptasensor can be successfully applied for PSA determination in serum samples of prostate cancer patients.
研究领域:
分析化学
·
生物传感器
·
纳米技术
·
癌症诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yuming Zhang,Junming Cao,Junzhi Li,Zeyu Yuan,Dongdong Li,Lili Wang,Wei Han
High-performance aqueous electrochemical energy storage technology has attracted extensive research interest due to its high safety and potential for commercialization. Herein, following the simultaneous doping-electrostatic synergistic assembly strategy, we synthesized the 2D/2D Co-doped NiMn-Layered double hydroxide (LDH)/V 2 CT x MXene (CNMV) composite materials that serve as advanced electrodes for aqueous energy storage devices, such as supercapacitors and zinc ion batteries (ZIBs). For supercapacitors, benefiting from the hetero ion doping effect, the as-assembled CNMV electrode exhibits a higher specific capacitance of 1005 F g −1 at a current density of 1 A g −1 . For the assembled asymmetric supercapacitor (ASC) devices, a high energy density of 30.16 Wh kg −1 at 0.7 kW kg −1 was achieved. Acting as the cathode for ZIBs, CNMV exhibits a high reversible capacity of 322.7 mA h g −1 at 0.2 A g −1 after 100 cycles, and a considerable energy density of 368.7 W h kg −1 at a power density of 246 W kg −1 . The battery-type transformation to the pseudocapacitance-type CNMV electrode for the supercapacitor was demonstrated by quantitative kinetic analysis, while phase transformation and Zn 2+ insertion/extraction for zinc ion storage mechanism were demonstrated by ex-situ XRD and XPS. This study provides a facile and effective approach for the design of high-performance MXene-based electrodes for aqueous electrochemical energy storage devices.
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
Energy Material Advances
·
2023
·
IF 12.9
Xinliang Li,Mian Li,Wenyu Xu,Zhaodong Huang,Guojin Liang,Qi Yang,Qing Huang,Chunyi Zhi
Despite the remarkable ion-hosting capability of MXenes, their electrochemical performance is restricted to the ion shuttle barrier stemming from the capacious surface and the sluggish chemical activity of intrinsic transition metal layers. Herein, we construct a vertically aligned array of V 2 CT X flakes utilizing a carbon sphere template (V 2 CT X @CS), with the interlayer galleries outward facing the external electrolyte, to shorten the diffusion length and mitigate the ion shuttle barrier. Moreover, we leverage the high sensitivity of V 2 CT X flakes to the water–oxygen environment, fully activating the masked active sites of transition metal layers in an aqueous environment via continuous electrochemical scanning. Aqueous V 2 CT X @CS/Zn battery delivers a novel capacity enhancement over 42,000 cycles at 10 A g −1 . After activation, the capacity reaches up to 409 mAh g V 2 CT X − 1 at 0.5 A g −1 and remains at 122 mAh g V 2 CT X − 1 at 18 A g −1 . With a 0.95-V voltage plateau, the energy density of 330.4 Wh kg V 2 CT X − 1 surpasses previous records of aqueous MXene electrodes.
研究领域:
材料科学
·
电化学
·
储能
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuhao Xia,Li Xu,Xingxing Li,Chuankun Zhang,Manman Yu,Yanan Ma,Yang Yue,Yi Yuan,Mengdi Guo
TEM, XRD, XPS and DFT have been employed to investigate energy storage mechanism of FZIHM. • FZIHM demonstrates wide window voltage and good flexibility. • This work may pave the way for further advance high performance zinc-ion hybrid supercapacitors. Aqueous zinc ion hybrid micro-supercapacitor is considered for emerging cutting-edge candidate for micro-energy storage technologies due to their inimitable advantages of low-cost materials, high safety, high abundance and environmental friendliness. The selection of electrode materials and the matching of positive and negative electrodes are of vital importance for enhancing the electrochemical performance of flexible zinc ion hybrid micro-supercapacitor (FZIHM) using V 2 CT x MXene as anode, MoO 3 as cathode, demonstrating an areal capacitance of 108.26 mF cm −2 , along with about 90% capacitance retention even after 5000 loops test. And it also exhibits excellent flexibility with 83.7% capacitance retention even after 1000 bending cycles. The transmission electron microscopy (TEM), X-ray diffractometer, X ray photoelectron spectroscopy (XPS) and theoretical calculation demonstrates that zinc ions entered the interlayer of the V 2 CT x anode during the charging process, resulting in an increase in the d-spacing. During the discharging process, zinc ions were released from the d-spacing of the V 2 CT x anode, and the d-spacing returned to its original position. This work using V 2 CT x MXene as anode material for zinc ion hybrid micro-supercapacitors may pave the way for further advance high-performance zinc-ion hybrid supercapacitors.
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Meng He,Xiaohui Lu,Yanyan Li,Yanfang Tao,Li Zhao,Yang Li
Perovskite solar cells (PSCs) suffer from a high density of defects at the buried bottom interface, which negatively impacts the efficiency in the PSCs and interface recombination. This is primarily due to carrier recombination losses occurring at the perovskite/SnO 2 . In this study, a two-dimensional lamellar V 2 CT x MXene materials, synthesized by hydrofluoric acid (HF) etching, was incorporated at the buried interface between the SnO 2 electron transport layer and the perovskite layer. The introduction of a V 2 CT x MXene modified layer at the perovskite/SnO 2 buried interface simultaneously modulates the crystallization and defect passivation within the perovskite material, leading to enhanced grain size and crystallinity. Consequently, highly efficient and stable PSCs were achieved. The presence of terminal group T x (OH − , F − ) in V 2 CT x facilitates the transfer of electrons to the 6p vacant orbitals of Pb 2+ ions, promoting the formation of Pb-F complexes. These complexes effectively suppress uncoordinated Pb ions at the perovskite interfaces, thereby significantly reducing defect density. As a result, the V 2 CT x -modified PSCs achieve an average power conversion efficiency (PCE) of 14.6 %, a notable improvement over the 12.8 % of the control devices, while also enhancing operational stability. This research provides a convenient and effective approach for enhancing crystallization and passivation defects in perovskite films, thereby improving device efficiency and stability.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 22
·3079
·
IF 4.9
Dan Zhou,Qihuang Deng,Liping Yang
In order to improve the electrochromic performance of polyaniline (PANI), porous PANI/vanadium carbide MXene (PANI/V2CTx) composite electrochromic films were prepared via a rapid, facile, and low-cost one-pot electrodeposition method from an aqueous solution composed of aniline and V2CTxfor the first time. The addition of V2CTxwith a 2D layered structure results in the PANI/V2CTxcomposite films exhibiting significantly different morphologies, structures, electrochemical and electrochromic properties from the pure PANI film. The results show that compared with the pure PANI film, the composite film with optimum V2CTxcontent possesses superior electrochromic properties, such as higher optical contrast, switching speed, coloration efficiency, and cycling stability. The improved electrochromic properties of the composite film can be ascribed to its unique porous morphology and strong hydrogen bond and/or electrostatic interaction between PANI and V2CTx. This research demonstrates that the one-pot electrodeposition method and the prepared conductive PANI/MXene composite films have potential applications in various fields.
研究领域:
材料科学
·
电化学
·
纳米材料
·
智能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Jingxin Zhao,Hongyu Lu,Xijun Wei,Yuanyuan Gao,Yingze Song,Bingang Xu
Constructing a Zinc ion hybrid supercapacitor (ZHMSC) configuration with excellent electrochemical performance for progressive energy storage is worldwide attractive but yet still a considerable challenge. In this study, a universal and effective strategy has been proposed and developed for 3D-writing additive-free V 2 CT x MXene architected ZHMSC to realize the excellent electrochemical performance. With proper designs of printable electrochemical materials and direct ink writing architectures, 3D printed ZHMSC devices with high areal capacitance and excellent areal energy density have been achieved in a limited footprint area. Benefitting from the excellent ion diffusion and highly conductive networks, the 3D printed ZHMSCs device achieves the ultrahigh specific capacitance of 3.82 F cm −2 , large energy density of 1.36 mW h cm −2 and remarkable cyclic performance with the capacitance retention of 97.8 % after 12,000 cycles at 20 mA cm −2 . This work not only provides new insights on direct ink writing for high-performance Zn-Ion hybrid capacitor, but also offers a facile and efficient method to construct large-scale energy storage devices with high electrochemical performance for future energy storage.
研究领域:
材料科学
·
电化学储能
·
纳米材料
·
先进制造
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 44
·23531-23541
·
IF 14.511
Fei Yu,Zhengqu Yang,Xiaochen Zhang,Peiyu Yang,Liqing Li,Jie Ma
MXenes have promising applications in capacitive deionization (CDI) due to their excellent electrical conductivity, tunable layer structure and hydrophilic surface. However, the electrochemical performance and water stability of MXenes would be limited by the large number of terminations on their surface. In this work, we obtained VS2/V2CTx nanocomposites by in situ partial derivatization of MXene to enhance electrochemical performance and slow down its own oxidation, and the resulting material was used as a cathode for CDI desalination. The TOPSIS-Entropy weight model was first used to achieve multi-objective optimization, realizing a salt adsorption capacity of 166.83 mg g−1, a salt removal rate of 3.67 mg g−1 min−1 and an energy consumption of only 0.256 kW h kg−1-NaCl. It also showed good stability over 60 CDI cycles. The fast salt removal rate and high desalination capacity of VS2/V2CTx can be explained by the synergy between the pseudocapacitive and battery behaviors of the VS2/V2CTx hybrid material. In situ electrochemical analysis based on electrochemical quartz crystal microbalance (EQCM) demonstrated that the desalination process is reversible and that the deionization mechanism is a combination of faradaic reaction (removal of Na+·4H2O) and intercalation pseudocapacitance (removal of desolvated Na+). This work shows that VS2/V2CTx, as a partially derived MXene material, provides a new solution to improve the stability and electrochemical properties of MXenes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Green Chemical Engineering
·
2025
·
IF 7.6
Guangcai Zhao,Shuo Meng,Zhongyuan Zheng,Jian Guo,Lu Chen,Hongli Zheng,Peng Zhang,Jia Yu,Lujie Zuo,Hongbin Zhao,Ting He
Vanadium-based compounds are promising cathodes for aqueous zinc-ion batteries owing to their high capacity derived from multi-electron redox reactions. However, their practical application is often hampered by poor rate capability, caused by low electrical conductivity and sluggish Zn 2+ diffusion kinetics. Herein, we propose a precise amorphization strategy applied to conductive V 2 CT x MXene to overcome these limitations. Starting from exfoliated few-layer V 2 CT x , a controlled annealing process in argon induces a crystalline-to-amorphous transition, which effectively elevates the valence state of surface vanadium, creates abundant active sites for Zn 2+ storage, and expands the interlayer spacing to facilitate ion diffusion. Meanwhile, the intrinsic conductive V-C-V framework remains intact, ensuring rapid electron transport. As a result, the amorphous a-V 2 CT x cathode delivers remarkable electrochemical performance: a high reversible capacity of 543 mAh/g at 1 A/g, exceptional rate capability (494 mAh/g at 30 A/g), and outstanding cycling stability over 3000 cycles with a minimal decay rate of 0.012% per cycle. This work demonstrates the great potential of phase engineering MXenes for developing high-performance energy storage materials.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jiapei Wang,Yunfeng Guan,Qin Zhang,Hui Zhu,Xuanke Li,Yanjun Li,Zhijun Dong,Guanming Yuan,Ye Cong
Developing homogeneous dispersion and efficient loading Pt-based electrocalalyst remains a huge challenge for hydrogen evolution reaction (HER). Herein, a facile approach to deposit Pt nanoparticles on two-dimensional V 2 C MXene (Pt/V 2 CT x ) is achieved. Pt nanoparticles with narrow size distribution (∼3 nm) and high loading capacity are uniformly anchored on the surface of V 2 CT x . The obtained catalysts possess outstanding activity and stability for HER. In 0.5 M H 2 SO 4 , the overpotential of Pt/V 2 CT x (20%) is 67 mV, and the Tafel slope is 20.6 mV/dec. The oxygen-rich surface of V 2 CT x can provide good hydrophilicity, low hydrogen adsorption free energy and oxophilicity to provide abundant bonding sites for Pt nanoparticles. Moreover, the intrinsically excellent conductivity of V 2 CT x and strong coupling between V 2 CT x and Pt are also of benefit for improving the charge transfer and accelerating the HER kinetics. Therefore, Pt/V 2 CT x may be a promising candidate for HER.
研究领域:
材料科学
·
电化学
✓ 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）