Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 25
·12705-12715
·
IF 11.301
Xinming Wu,Han Wang,Zhilin Zhao,Bin Huang
Although potassium-ion batteries have been widely studied because of their low cost and high theoretical capacity, the origin of the poor potassium-ion storage kinetics and low structural stability still remains elusive mainly due to the large size of K+ (0.138 nm). Herein, we report an interstratification-assembly strategy via van der Waals interactions to design a novel BPE@V2CTx hybrid anode, wherein black phosphorene (BPE) and V2CTx MXene are derived from their individual 2D nanosheets. The coupled BPE@V2CTx hybrid anode with a 2D stacked interstratification structure and large specific surface area could efficiently take advantage of BPE and V2CTx nanosheets and create more active sites. This interstratification hybrid electrode not only provides an enlarged interlayer spacing and a three-dimensional interconnected conductive network to accelerate the K+ transport rates, but also has good tolerance to volume changes caused by phase transformations during the fast potassiation/depotassiation process. DFT calculations further confirm that potassium affinities and diffusion kinetics are significantly enhanced in the BPE@V2CTx hybrid anode, particularly in BPE@V2CF2. As a result, the hybrid anode possesses a remarkable synergetic effect and achieves a high reversible capacity of 593.6 mA h g−1 at 0.1 A g−1 and excellent cycling stability of 485/261 mA h g−1 with 91/86% capacity retention after 3000 cycles at 0.2/2.0 A g−1. This work opens a new way for the application of self-assembled hybrid electrodes in energy storage, electrocatalysis and sensors.
研究领域:
材料科学
·
能源存储
·
计算化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Sairao Zhao,Xiao Luo,Yongfa Cheng,Zhixiang Shi,Tao Huang,Shanghua Yang,Haojian Zheng,Yun Bi,Jun Zhang,Qiuyue Shi,Minglei Cao,Chuankun Zhang,Yang Yue,Yanan Ma
Ti 3 C 2 T x MXene with unique physical and chemical properties are recently sparked tremendous interest in the energy storage field. Compared to Ti 3 C 2 T x , V 2 CT x MXene is a more promising candidate for energy storage due to a low number of atomic layers in the V 2 CT x structure and varied valence states of vanadium. Herein, we report a flexible V 2 CT x electrode with different layers (named accordion-like V 2 CT x , multi-layer V 2 CT x , and few-layer V 2 CT x, respectively) fabricated by using electrophoretic deposition, then assembled a flexible zinc ion hybrid capacitor (ZIHC) by virtue of zinc anode and gel electrolyte. The areal capacitance of few-layer V 2 CT x based ZIHC is 54.12 mF cm −2 at 0.1 mA cm −2 , which is greater than those of accordion-like V 2 CT x and multi-layer V 2 CT x based ZIHC. The outstanding electrochemical performance of few-layer V 2 CT x based ZIHC is attributed to its richer active sites and shorter ion transport routes. Additionally, the few-layer V 2 CT x based ZIHC also owns well cycling stability, with 81.48 % capacity retention after 8000 cycles, and a low self-discharge rate of 6.4 mV h −1 , making it suitable for wearable devices. So, the V 2 CT x based ZIHC is integrated with a Ti 3 C 2 T x based pressure sensor to monitor diverse human activities, demonstrating its steady and long-term power supply capacity as the energy storage device.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2025
·
IF 1.7
Wang Yunqian,Shi Haixiang,Chen Liuyun,Su Tongming,Luo Xuan,Xie Xinling,Ji Hongbing,Qin Zuzeng
NiIn intermetallic compounds are constructed over V 2 CT x MXene for the selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL). Ni 4 In/V 2 CT x demonstrated a conversion rate of 93.6% for CAL, with a high selectivity of 77.4% for COL. The COL yield of Ni 4 In/V 2 CT x is much greater than that of Ni 4 In, Ni/V 2 CT x , and Ni 4 In/Al 2 O 3 . Moreover, the V 2 CT x support is the key to the formation of NiIn intermetallic compounds, which effectively inhibit the oxidation of metallic Ni. NiIn metal particles are uniformly distributed on the surface of V 2 CT x , increasing the metal‒support interaction. Electron-deficient metallic Ni and In inhibit the hydrogenation of the C=C bond. Furthermore, the introduction of In provides more abundant and stronger Lewis acid sites, facilitating the adsorption of C=O bonds and thereby enhancing the selectivity for COL.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Jiucong Liu,Mengdi Zhang,Di Zhang,Xizheng Liu
Lithium-ion batteries (LIBs) suffered from severe performance fading when operated at lower temperatures due to the increase of Li desolvation energy and the formation of Li dendrites on the anode surface. It is critically important to develop a suitable anode with higher capacity retention at lower temperatures for advanced LIBs. Herein, we report the fabrication of a composite anode by confining room-temperature liquid GaInSn alloys within a porous 2D-layered V2CTx MXene. This configuration combines the high capacity of liquid metal (LM) and high ionic conductivity of 2D V2CTx by confining self-healing LM within the V2CTx framework, resulting in enhanced long-term cycle performance (1174.6 mA h g–1 after 200 cycles at 200 mA g–1) and low-temperature performance (529.6 mA h g–1 after 100 cycles at −20 °C). Theoretical calculations disclose that the strong adsorption of V2CTx to LM ensures the stability of the composites. It also reveals that LM with a lower adsorption energy promotes the transportation of Li+. The LM nanodroplets buffer the volume change of V2CTx during charging/discharging and avoid electrode crushing. The expanded layers of V2CTx and the porous structure facilitate the Li-ion desolvation and transportation at lower temperatures, thus suppressing the performance fading. This work paves the way for the development of composite anodes for LIBs with high specific capacity toward low-temperature applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yu Han,Li Zhang,Shaobin Li,Fengbo Li,Jianjiao Xin,Xue Wang,Minjie Liang
Hydroquinone (HQ) and catechol (CC) are toxic isomers with similar structures that often coexist, leading to interference during detection. In this study, we employed a controllable selenization strategy to construct V 2 CT x MXene-based multiphase electrode materials (VSe 2 @V 2 O 3 @V 2 CT x MXene) for the simultaneous detection of HQ and CC. Electrochemical tests revealed VSe 2 @V 2 O 3 @V 2 CT x MXene modified electrode exhibited low electrochemical impedance, a large active surface area, and excellent electrocatalytic performance. The sensor demonstrated linear detection ranges for HQ and CC from 0.5 to 600 μM, with limits of detection 0.144 μM and 0.131 μM, respectively. Additionally, it exhibited excellent repeatability, reproducibility, selectivity, and stability. The practical applicability of the sensor was confirmed through testing in drinking water and beverages, showing satisfactory recovery rates. This work expands the application of V 2 CT x MXene in the field of electrochemical sensing and offers new insights for food safety monitoring.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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
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
ACS Nano
·
2020
·
IF 14.588
Xinliang Li,Mian Li,Qi Yang,Hongfei Li,Hailong Xu,Zhifang Chai,Ke Chen,Zhuoxin Liu,Zijie Tang,Longtao Ma,Zhaodong Huang,Binbin Dong,Xiaowei Yin,Qing Huang,Chunyi Zhi
Nonbattery behavior related phase transition of electrodes is usually not favorable for any batteries because it results in performance degradation at all times. Here, we demonstrate a zinc hybrid-ion battery (ZHIB) with an unusual capacity enhancement even within 18 000 cycles by employing V2CTX MXene as the cathode, enormously differing from all reported counterparts with capacity degradation initiated within hundreds of cycles. The dominated mechanisms are determined to be MXene delamination and an unexpected phase transition during cycling. Both the original cathode and secondary derivative contribute to capacity simultaneously, resulting in the unusual capacity enhancement. Consequently, the specific capacity of 508 mAh g–1 (highest for all reported aqueous zinc-ion batteries) and high energy density of 386.2 Wh kg–1 are realized. Also, the quasi-solid-state batteries fabricated can output stably at −20 °C and in bending, twisting, stabbing, and cutting conditions. Our work brings an effective approach, that is, utilizing “unstable” electrode materials, which should usually be avoided, to achieve continuously enhanced performance of a battery. The idea to use both original and secondary materials for energy storage may be developed to be a general method to achieve extraordinary cycling stability of batteries.
✓ 已验证
产品关联
DOI
PubMed
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
危险品化学品经营许可证（带存储）