ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 24
·2010987
·
IF 18.808
Di Yang,Chunyu Zhao,Ruqian Lian,Lin Yang,Yizhan Wang,Yu Gao,Xu Xiao,Yury Gogotsi,Xudong Wang,Gang Chen,Yingjin Wei
The propensity of Li to form irregular and nonplanar electrodeposits has become a fundamental barrier for fabricating Li metal batteries. Here, a planar, dendrite-free Li metal growth on 2D Ti 3 C 2 T x MXene is reported. Ab initio calculations suggest that Li forms a hexagonal close-packed ( hcp ) layer on the surface of Ti 3 C 2 T x via ionic bonding and the lattice confinement. The ionic bonding weakens gradually after a few monolayers, resulting in a nanometers-thin transition region of hcp -Li. Above this transition region, the deposition is dominated by plating of body-centered cubic ( bcc ) Li via metallic bonding. Formation of a dense and planar Li metal anode with preferential growth along the (110) facet is explained by the lattice matching between Ti 3 C 2 T x and hcp -Li and then with bcc -Li, as well as preferred thermodynamic factors including the large dendrite formation energy and small migration barrier for Li. The prepared Li metal anode shows stable cycling in a wide current density range from 0.5 to 10.0 mA cm –2 . The LiFePO 4 ‖Li full cell fabricated with this Li metal anode exhibits only 9.5% capacity fading after 500 charge–discharge cycles at 1 C rate.
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 Energy Storage
·
2025
·
IF 9.8
Jingdi Shang,Libo Wang,Ying Gao,Ji’a Yang,Qixun Xia,Qianku Hu,Aiguo Zhou,Bo Wang
Due to its unique structure and performance, Ti 3 C 2 T x has been widely investigated as an electrode material for flexible energy storage devices using hydrogel as a solid electrolyte. The composition and structure of hydrogels determine their poor performance at high temperatures and there is little research on MXene flexible devices at high temperature. In this work, we designed a method for preparing capacitors with Ti 3 C 2 T x as the electrode material and ionic liquid as the electrolyte. By leveraging the high permeability of ionic polymer solution, a seamless electrode-electrolyte interface is constructed. The device can achieve a maximum capacitance of 173.8 mF cm −2 at a 5 mV s −1 scan rate, with a maximum specific energy density and power density of 96.57 μWh cm −2 and 1.74 mW cm −2 , respectively. The capacitor retains 89.5 % of its initial capacitance after 20,000 cycles, demonstrating excellent cycle stability. Importantly, the supercapacitor can operate at 100 °C with a specific capacitance of 278.66 mF cm −2 . In addition, the designed device can retains 100 % or more of its capacitance even after 1000 cycles of 180° bending，demonstrating robust mechanical performance. This work provides a reference for studying the application of MXene in high-temperature flexible supercapacitor.
研究领域:
材料科学
·
能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Xinru Gong,Haohao Zou,Huadong Ye,Weiwei Zhu,Ying Han,Zhenxin Duan,Suqiu Jia,Xu Ran
In this study, copper (Cu) nanoparticles (NPs)-modified Ti 3 C 2 T x MXene nanosheets (Ti 3 C 2 T x @Cu) were synthesized via chemical reduction. Subsequently, Ti 3 C 2 T x @Cu/Cu composite powder was synthesized via low-energy ball milling, followed by rapid hot pressing to fabricate Ti 3 C 2 T x @Cu/Cu composites. The influence of Ti 3 C 2 T x @Cu content on the microstructure, mechanical properties, and tribological performance of Ti 3 C 2 T x @Cu/Cu composites was systematically investigated. With increasing Ti 3 C 2 T x @Cu content (0–10 vol%), the Brinell hardness of the composites gradually increased, while the tensile strength showed an initial increase to a maximum of 311.59 MPa at 3 vol%, and then gradually decreased. The main reason for this improvement was the enhancement effect of Ti 3 C 2 T x @Cu. Moreover, Ti 3 C 2 T x @Cu effectively enhanced the tribological performance of the Cu matrix, attributed to the synergistic effect of Ti 3 C 2 T x MXene nanosheets and Cu NPs. These components could get adsorbed onto the surface of the friction pairs and induce tribochemical reactions, resulting in the formation of Fe 2 O 3 and CuO. Consequently, a stable protective film composed of Fe 2 O 3 /CuO/Ti 3 C 2 T x MXene was formed on the worn surface, thereby reducing friction.
研究领域:
材料科学
·
纳米技术
·
冶金学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xianhong Zheng
MXenes have attracted tremendous attention in the area of electrochemical energy-storage devices owing to their high electrical conductivity , pseudocapacitance and two-dimensional lamellar structure . Nevertheless, MXene flakes intrinsically tend to lie flat and restack, resulting in highly tortuous ion transport pathways and inferior ion accessibility. Herein, we develop a femtosecond laser ablation strategy to fabricate flexible and high-performance MXene ribbon supercapacitor electrodes. The fabricated MXene ribbons have porous edges with exposed continuous lamellar channels, which shortens the H + transport pathways, impregnates with sufficient electrolyte, benefits for H + intercalation and ion storage. The resultant MXene ribbons exhibit high specific capacitance (1308.3 mF/cm 2 ), good rate capability and long cycling life (95% capacitance retention and 92% coulombic efficiency after 30,000 cycles). This work provides a new strategy for the rational structure design of high-rate MXene-based supercapacitor electrodes and lays the foundation for the next generation high-performance energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Small Methods
·
2023
·Vol. 7
·期 8
·2201526
·
IF 12.4
Yongqiu Xian,Bin Wang,Zifeng Lin
MXenes have been extensively explored as supercapacitor electrodes, especially in acidic aqueous electrolytes, where ultrahigh specific capacitance can be achieved; however, their narrow working potential window (≤ 1.0 V) limits the acquisition of high energy. Neutral and alkaline electrolytes can be used to extend the working potential window but MXenes in these electrolytes are less pseudocapacitive active, which leads to reduced charge storage. In this study, it is shown that Ti 3 C 2 T x MXene in a mild AlCl 3 aqueous electrolyte can operate at a wide potential range from 0 to −1.3 V versus Hg/Hg 2 SO 4 and retain high pseudocapacitive activity. Thus, a high capacity of up to 85 mAh g −1 is achieved, surpassing its performance in H 2 SO 4 electrolyte of 78 mAh g −1 . More interestingly, most of the capacity is released at a more negative potential range than that in acidic electrolytes, making it more suitable as a negative electrode material. In situ electrochemical quartz crystal microbalance results suggest that the high capacity originates from the pseudocapacitive intercalation/deintercalation of H + instead of Al 3+ , providing the possibility of coupling MXene anodes with proton redox active cathodes to achieve high-energy and high-power devices.
研究领域:
材料科学
·
储能技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wei Huang,Ling Ding,Dianhui Wang,Ping Cai,Jing Wang,Ruixiang Gao,Haiqing Hu,Yashuai Ye,Chengwen Huang,Xiaogang Xue,Hongliang Peng,Lixian Sun
An appropriate electron transport layer (ETL) or cathode buffer layer (CBL) is critical for high-performance perovskite solar cells (PVSCs). In this work, tetrabutylammonium hydroxide (TBAOH)-functionalized Ti3C2Tx MXene (TBAOH-Ti3C2Tx) is developed to improve the photovoltaic performance of PVSCs. TBAOH-Ti3C2Tx is synthesized by HF etching and then TBAOH intercalation, and TBAOH can effectively attach to the Ti3C2Tx surface during the intercalation process. In hole transport material (HTM)-free carbon-based PVSCs with the structure of ITO/ETL/MAPbI3/carbon, the SnO2 doped by TBAOH-Ti3C2Tx (SnO2:TBAOH-Ti3C2Tx) as ETL shows decreased WF and increased conductivity and improves the growth of the perovskite film with a larger grain and significantly reduced defects, which synergistically facilitate charge transport and extraction and reduce charge recombination. The HTM-free carbon-based PVSC with SnO2:TBAOH-Ti3C2Tx ETL exhibits a significantly higher PCE of 14.93% with enhanced device stability compared to the control device with pristine SnO2 ETL (11.95%) and also outperforms most of the HTM-free carbon-based PVSCs with MAPbI3 perovskite reported so far. In traditional inverted PVSCs with the structure of ITO/PTAA/MAPbI3/PCBM/CBL/Ag, the TBAOH-Ti3C2Tx is utilized as a CBL to significantly enhance device performance with a high PCE of 21.16%, which is obviously superior than that (16.26%) of the control device without CBL. The impressive results indicate that tetrabutylammonium hydroxide-functionalized Ti3C2Tx MXene possesses great application potential in different functional layers for high-performance PVSCs.
研究领域:
材料科学
·
能源科学
·
光伏技术
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 36
·19022-19027
·
IF 11.301
Hui Ma,Haoge Cheng,Xinlei Ma,Sen Wang,Zhuqing Zhou,Yuqiao Chai,Ruoqi Chen,Xinyue Zhang,Yonglin He,Yapei Wang,Yan Li,Xusheng Wang,Rui Li,Ning Ma,Mianqi Xue
Charge/light-related advancements have greatly pushed the development of modern technology, and the relationship between charge and light is worth exploring. While research into the applications of light and charge flow (photoelectric current) is in full swing, studies on the reaction between light and electrostatic charge have made little progress on rare ways to realize photo-stimulated discharge. Herein, we link electrostatic charge and light using a bridge of intense heat, which is produced from the efficient photothermal conversion of Ti3C2Tx MXene. The in situ photothermal conversion and selective thermally stimulated discharge are successfully combined, then novel light-induced electrostatic lithography can be realized on both polymethyl methacrylate glasses and nanofilms. In this process the surface temperature of Ti3C2Tx film can be as high as 300 °C using 808 nm near-infrared irradiation at a power density of 1.7 W cm−2. The combination of light and electrostatic charge is also successfully applied to electrostatic printing and chemical reactions.
研究领域:
材料科学
·
光子学
·
纳米技术
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 15
·2261
·
IF 5.3
Zelin Li,Yang Zhao,Qinglin Deng,Xuhui Zhu,Yipeng Tan,Ziwen Feng,Hao Ji,Shan Zhang,Lingmin Yao
Using natural light energy to convert water into hydrogen is of great significance to solving energy shortages and environmental pollution. Due to the rapid recombination of photogenerated carriers after separation, the efficiency of photocatalytic hydrogen production using photocatalysts is usually very low. Here, efficient CdZnS nanoparticles@Ti3C2TxMXene nanosheet heterojunction photocatalysts have been successfully prepared by a facile in situ growth strategy. Since the CdZnS nanoparticles uniformly covered the Ti3C2TxMxene nanosheets, the agglomeration phenomenon of CdZnS nanoparticles could be effectively inhibited, accompanied by increased Schottky barrier sites and an enhanced migration rate of photogenerated carriers. The utilization efficiency of light energy can be improved by inhibiting the recombination of photogenerated electron-hole pairs. As a result, under the visible-light-driven photocatalytic experiments, this composite achieved a high hydrogen evolution rate of 47.1 mmol h−1g−1, which is much higher than pristine CdZnS and Mxene. The boosted photocatalytic performances can be attributed to the formed heterojunction of CdZnS nanoparticles and Ti3C2TxMXene nanosheets, as well as the weakened agglomeration effects.
研究领域:
材料科学
·
能源化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-12
·
IF 9.429
Yu Rongjun,Xue Jian,Wang Yang,Qiu Jingfu,Huang Xinyi,Chen Anyi,Xue Jianjiang
In this work, Ti 3 C 2 T x MXene was identified as efficient nanozyme with area-dependent electrocatalytic activity in oxidation of phenolic compounds, which originated from the strong adsorption effect between the phenolic hydroxyl group and the oxygen atom on the surface of Ti 3 C 2 T x MXene flake. On the basis of the novel electrocatalytic activity, Ti 3 C 2 T x MXene was combined with alkaline phosphatase to construct a novel cascading catalytic amplification strategy using 1-naphthyl phosphate (1-NPP) as substrate, thereby realizing efficient electrochemical signal amplification. Taking advantage of the novel cascading catalytic amplification strategy, an electrochemical biosensor was fabricated for BCR/ABL fusion gene detection, which achieved excellent sensitivity with linear range from 0.2 fM to 20 nM and limit of detection down to 0.05 fM. This biosensor provided a promising tool for ultrasensitive fusion gene detection in early diagnosis of chronic myelogenous leukemia and acute lymphocytic leukemia. Moreover, the manageable catalytic activity of MXene broke a path for developing nanozymes, which possessed enormous application potential in not only electrochemical analysis but also the extensive fields including organic synthesis, pollutant disposal and so on. Graphical Abstract
研究领域:
生物医学工程
·
纳米材料科学
·
癌症早期诊断
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 9
·e70571
·
IF 3.4
Xiaoya Meng,Zhongyu Li,Zili Xia,Dongdong Chen,Zijing Yuan,Yang Han,Heng Zhang,Xia Sun,Jun Seop Lee,Usmanova Surayo Rakhmatzhanovna,Bobokalonov Jamshed Tolehmurodovich,Wenping Zhao
An electrochemical aptasensor based on Ti 3 C 2 T x (MXene) and cDNA-PAA was established for sensitive detection of aflatoxin B1 (AFB1) in peanuts. The high specific surface area of Ti 3 C 2 T x (MXene) contributed to improve electrochemical efficiency and enhancing sensor stability which were characterized by the Randles−Sevcik equation. The self-made polyacrylic acid (PAA) nanogel was added with aptamer complementary chain (cDNA) to form cDNA-PAA nano gel composite, which could realize the synergistic amplification of the difference between the electrochemical signals before and after the addition of AFB1. The sensing effect of cDNA-PAA was validated using DPV. Methylene blue (MB) was modified at the proximal 3′ termini of the aptamer (Apt-MB), meanwhile AuNPs was used to immobilize Apt-MB and improve the efficiency of electrochemical reactions. The competition between AFB1 and cDNA-PAA combined with Apt MB resulted in a significant change in the electrochemical signal current. In addition, the constructed electrochemical aptasensor had a lower detection limit of 1.0 × 10 −3 ng/L for AFB1 under optimal detection conditions, and a detection range of 1 to 1000 ng/L. Moreover, peanuts with different concentrations of AFB1 were used as actual detection samples. Through the constructed sensor detection, the spiked recovery rates within the spiking range of 50 to 500 ng/mL were 97.76% to 101.84% ( n = 3).
研究领域:
生物传感器
·
食品安全检测
·
分子诊断
·
纳米材料应用
·
电化学分析
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2024
·
IF 10.5
Junyu Lu,Lei Xu,Cheng Xie,Qun Wei,Qilin Jiang,Guangsheng Yao,Zhaohui Han
The rapid development of modern wireless communication technology makes electromagnetic wave pollution increasingly serious, necessitating the development of high-performance electromagnetic wave-absorbing materials. This study introduces a Ti 3 C 2 T x MXene hybrid carbon foam (HCF) that exhibits a tunable and efficient electromagnetic wave absorption performance. The HCF features a porous, multilayered structure, which enhances its multi-reflection properties, and a heterogeneous interface between the carbon foam and MXene boosting its dielectric loss. By regulating the content of MXene, the ratio of polarization loss to conduction loss can be regulated to achieve better impedance matching. As a result, the HCF demonstrated superb electromagnetic wave absorption performance with RL min = −72.25 dB and EAB max = 6.55 GHz. Furthermore, the minimum absorption frequency domain could be tuned within 8–14 GHz by varying the MXene content. The performance in radar wave absorption and electromagnetic-thermal conversion (ramp rate 85.81 °C/s from RT to 200 °C) proves that HCF is an efficient and reliable electromagnetic wave absorber, suitable for radar technology, microwave heating, and communication systems applications.
研究领域:
材料科学
·
电磁学
·
纳米技术
·
通信技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Rui Ma,Xujing Zhang,Jingting Zhuo,Lingyun Cao,Yutong Song,Yajiang Yin,Xiaofeng Wang,Guowei Yang,Fang Yi
MXenes have shown great potential for supercapacitor electrodes due to their unique characteristics, but simultaneously achieving high capacitance, rate capability, and cyclic stability along with good mechanical flexibility is exceptionally challenging. Here, highly enhanced capacitance, rate capability, and cyclic stability, as well as good mechanical flexibility for T3C2Tx MXene-based supercapacitor electrodes are simultaneously obtained by engineering the electrode structure, modifying the surface chemistry, and optimizing the fabrication process via an optimized integration approach. This approach combines and more importantly optimizes three methods that all require a calcination process: carbonizing in situ grown polymer (“Cpolymer”) on the MXene, alkali treatment (“A”), and template sacrificing (“P”); and the optimized processes lead to more abundant active sites, faster ion accessibility, better chemical stability, and good mechanical flexibility. The obtained P-MXene/Cpolymer-A electrodes are binder-free and self-supporting and not only have good mechanical flexibility but also demonstrate much larger capacitances and better rate performance than the pristine MXene electrode. Specifically, the P-MXene/CPAQ-A electrode (PAQ: quinone-amine polymer) achieves a high capacitance of 532.9 F g–1 at 5 mV s–1, together with superior rate performance and improved cyclic stability (97.1% capacitance retention after 40 000 cycles at 20 A g–1) compared with the pristine MXene (79.6% retention) and P-MXene-A (77.3% retention) electrodes. In addition, it is discovered that carbonizing in situ grown polymers can variously remove the −F group and the removal effect can be accumulated with that by the alkali treatment.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）