Energy & Environmental Science
·
2025
·
IF 30.8
Hongyu Qin,Ao Liu,Kefeng Ouyang,Sheng Chen,Shubing Wei,Yan Huang
Sluggish diffusion rate and exceptionally uneven distribution of Zn2+ at the electrode/electrolyte interface under high depth of discharge (DOD) severely limits the advancement of high-energy-density Zn metal batteries (ZMBs). Herein, a hydrated eutectic colloidal electrolyte based on two-dimensional transition metal boride, Mo4/3B2T2 MBene (where T represents -OH and -F), is developed. The good Zn²⁺ affinity of terminal groups of MBene promotes ion diffusion, thus achieves a high Zn²⁺ transference number of 0.91, which significantly enhances and balances the ion concentration at the Zn anode surface, improving the Zn deposition dynamics. As a result, Zn anode with ultrathin thickness of 10 μm demonstrates 900 h of cyclability under ultrahigh DOD of 90%. Additionally, the enlarged Zn||Zn pouch cell with a scale of 10×10 cm2 shows a stable cyclic performance for 500 h at 60% DOD, meanwhile the constructed 2 Ah four-electron Zn||I2 pouch battery delivers an energy density of 158.5 Wh L−1 under the same condition. This work provides a new guideline for the development of high-DOD metal anodes and high-energy-density metal batteries.
研究领域:
电化学
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材料科学
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储能技术
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纳米技术
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电池技术
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yuanyuan Zeng,Titao Fang,Hanjing Wei,Yiwen Ma,Wenhe Xia,Lihui Zhao,Chenpeng Huang,Jinyang Han,Bingmeng Hu,Xiaoming Zhang
Two-dimensional transition-metal borides, known as MBenes, are promising electrode materials for microsupercapacitors (MSCs) because of their excellent mechanical properties, hydrophilic surfaces, metallic conductivity, and rich surface chemistry. However, strong van der Waals interactions cause MBene nanosheets to restack, which reduces electrochemically active sites and limits ion transport. In this work, carbon nanotubes (CNTs) were incorporated into the layered MBene framework, where they are distributed through accessible inter-sheet regions and form an interconnected conductive network that mitigates severe restacking. This structure improves the connection between adjacent MBene sheets, promotes charge transfer, and provides more accessible pathways for electrolyte ions. The MBene/CNTs composite delivered a high areal capacitance of 196 mF cm⁻ 2 at 2 mV s⁻ 1 . The assembled flexible MBene/CNTs MSC achieved an areal capacitance of 94.5 mF cm⁻ 2 and an areal energy density of 5.43 μWh cm⁻ 2 at an areal power density of 1 mW cm⁻ 2 . The device also retained 94.4% of its initial capacitance after 1600 cycles and maintained more than 95% capacitance retention when bent from 0° to 120°. Density functional theory (DFT) calculations reveal interfacial charge redistribution between MBene and CNTs together with regulated K adsorption behavior at the composite interface. These results show that the interlayer engineered MBene/CNTs structure is an effective design for flexible microscale energy-storage devices with high capacitance, good stability, and mechanical flexibility.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Ying Wang,Xiaofeng Zhao,Ying Yu,Xiang Gao,Chunpeng Ai
As emerging nanomaterials, MBenes (two-dimensional transition metal borides) have attracted increasing attention, but synthesis strategies still face limitations. In this study, MnB MBene was successfully synthesized via molten salt etching of the Mn 2 AlB 2 precursor, with a systematic investigation of the effects of etching conditions on the etched products. Characterization revealed that under optimal conditions (a Mn 2 AlB 2 to ZnCl 2 molar ratio of 1:2, etching temperature of 650 °C, and etching time of 4 hours), the products exhibited high crystallinity and a well-defined thin-layer nanosheet structure. Furthermore, the intrinsic magnetism of the MnB MBene was investigated through macroscopic magnetic response and hysteresis loop analysis. Macroscopically, the MnB MBene powder demonstrates clear magnetism, as it is visibly attracted to a permanent magnet. The hysteresis loop analysis shows that the MnB MBene has a saturation magnetization of 42 emu/g and a coercivity of 228 Oe at room temperature. Moreover, temperature-dependent hysteresis loop measurements revealed that both saturation magnetization and coercivity decrease with increasing temperature, while the MnB MBene retains their magnetism even at 400 K.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Lihao Guo,Shuxiang Xu,Xiaolin Tai,Li Wang,Gandong Zhou,Jie Yang,Taorui Yang,Yue Lin,Jianzhi Gao,Minghu Pan,Weiwei Wu,Miaomiao Yuan
Sonodynamic therapy, as a deep penetrating therapy method with high therapy efficacy, is garnering attention in the field of tumor therapy. Nevertheless, the trade-off between high sonodynamic efficacy and stability is difficult to balance for conventional sonosensitizers, which impedes their clinical translation. Exploring the sonodynamic performance of novel materials is imperative to synchronously achieve these two aims. Two-dimensional (2D) metal borides (MBene) possess enormous application potential in biotechnology fields, but so far there are few studies on sonodynamic therapy research. In this work, two types of metal boride nanosheets, orthorhombic and hexagonal molybdenum boride (MoAlB-MoB and Mo 4/3 B 2-x T z ), are synthesized, and their properties are characterized to understand the structure-properties relationship. The MBene nanosheets demonstrate superior and stable sonodynamic efficacy compared with commercial sonosensitizers (TiO 2 and indocyanine green) and a nanosheet sonosensitizer (Mo 2 C MXene). By delivering via microneedle, the MBene nanosheets can significantly inhibit tumor growth with a high precision through sonodynamic reactions. Mechanistic investigations reveal that immunity is activated and long-term immunity memory is established to suppress tumor. The structure-function relationship of MBene nanosheets are further simulated. This work elucidates the therapeutic potential and mechanistic foundations of MBene-based sonodynamic therapy, establishing a promising platform for sonodynamic cancer therapy.
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DOI
高影响因子
Science Advances
·
2026
·Vol. 12
·期 13
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IF 13.9
Binfen Wang,Hongwei Wang,Wenyu Xu,Zelin Chang,Jialin Li,Yutong Gong,Fei Huang,Junjie Wang,Xinliang Li
Charge carrier recombination represents a fundamental constraint in semiconductor photocatalysis. Combining heterostructure design with deliberate defect engineering to facilitate hydrogen intermediate (*H) adsorption is a viable strategy for boosting photocatalytic hydrogen evolution reaction (HER). Herein, we design defective MBene via controlled etching and perform in situ hydrothermal assembly to develop a tailored MoBT x /CdS heterostructure. Incorporating a mere 0.5 wt % two-dimensional MoBT x MBene leads to a fourfold enhancement in HER activity over bare CdS. The established MoBT x /CdS catalyst achieves a remarkable HER of 10.2 millimoles per gram per hour under ambient conditions with 23.2% apparent quantum yield and sustains 90.2% activity after 24 hours of continued operation. Outstanding environmental adaptability is demonstrated through a consistent HER value of 7.1 millimoles per gram per hour in tap water and 5.7 millimoles per gram per hour in seawater. The temperature-dependent performance demonstrates notable robustness, reaching 11.1 millimoles per gram per hour at 35°C while preserving 40% functionality at harsh 5°C. Integrated photoelectrochemical and computational analyses elucidate that Mo vacancies create band alignment–optimizing electron traps and reduced *H adsorption barriers, enhancing fast carrier separation. Concurrently, interfacial covalent Mo─S bonds establish atomic-level charge-transfer pathways and enable rapid electron migration. This work establishes a previously unidentified paradigm for advanced photocatalyst design through concerted defect-interface modulation.
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Liangzhu Zhang,Shucheng Xing,Tian He,Wei-Bin Wu,An-lei Zhang,Zhoubin Guo,Pratteek Das,Shuanghao Zheng,Jun-Yi Ge,Xinliang Feng,Zhimei Sun,Zhong-Shuai Wu
The rapid development of low energy dissipation spintronic devices has stimulated the search for air-stable 2D nanomaterials possessing room-temperature ferromagnetism. Here the experimental realization of 2D Mo 4/3 B 2 nanosheets is reported with intrinsic room-temperature ferromagnetic characteristics by vacancy engineering. These nanosheets are synthesized by etching the bulk MAB phase (Mo 2/3 Y 1/3 ) 2 AlB 2 into Mo 4/3 B 2 nanosheets in ZnCl 2 molten salt. The Mo 4/3 B 2 nanosheets show robust intrinsic ferromagnetic properties, with a saturation magnetic moment of 0.044 emu g −1 at 300 K, while vacancy-free MoB MBene exhibits paramagnetism. It is elucidated that the Mo-vacancy defect generates large density of states near the Fermi surface and spontaneously spin-split bands through first-principles calculations, which contributes to the non-zero magnetic moment in Mo 4/3 B 2 nanosheets. This work lays the groundwork for activating the magnetic properties of MBene nanosheets by vacancy engineering, offering the possibilities for development of practical spintronic devices.
研究领域:
材料科学
·
凝聚态物理
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Wei Xiong,Xingyu Feng,Tao Huang,Zhencheng Huang,Xuanlong He,Jianhong Liu,Yi Xiao,Xinzhong Wang,Qianling Zhang
Two-dimensional (2D) transition metal borides (MBenes) have emerged as a rising star and hold great potential promise for catalysis and metal ion batteries owing to a well-defined layered structure and excellent electrical conductivity. Unlike well-studied graphene, perovskite and MXene materials in various fields, the research about MBene is still in its infancy. The inadequate exploration of efficient etching methods impedes their further study. Herein, we put forward an efficient microwave-assisted hydrothermal alkaline solution etching strategy for exfoliating MoAlB MAB phase into 2D MoB MBenes with a well accordion-like structure, which displays a remarkable electrochemical performance in sodium ion batteries (SIBs) with a reversible specific capacity of 196.5 mAh g –1 at the current density of 50 mA g –1 , and 138.6 mAh g –1 after 500 cycles at the current density of 0.5 A g –1 . The underlying mechanism toward excellent electrochemical performance are revealed by comprehensive theoretical simulations. This work proves that MBene is a competitive candidate as the next generation anode of sodium ion batteries .
研究领域:
材料科学
·
电化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xinyu Zheng,Lunhong Ai,Jia Ran,Sheng Tu,Aike Liu,Jing Jiang
Two-dimensional (2D) MXene materials have been recognized as a new candidate for the development of robust catalytic systems to promote the peroxymonosulfate (PMS)-based Fenton-like reaction towards organic pollutant elimination in water, however, there is an ongoing demands for the discovery of MXene analogs to enrich and understand their functions in PMS catalysis. Herein, we introduce a new 2D transition metal boride (MBene, MoAl 1-x B) with a structure similar to MXene to combine with cobaltic nanocatalyst, achieving highly efficient PMS catalysis. The resulting Co-MoAl 1-x B catalyst exhibits the impressive catalytic performance in activating PMS for ornidazole (ONZ) degradation, delivering a first-order kinetic constant of 0.4261 min −1 . In-depth experimental investigations using the combined spectroscopic, electrochemical and quenching tests demonstrate that the sulfate radical (SO 4 •− ), singlet oxygen ( 1 O 2 ) and electron transfer simultaneously dominate the radical/nonradical pathways to mediate the ONZ degradation. This study provides a new catalytic system and sheds light on the fundamental understanding the role of MBene for efficient PMS catalysis.
研究领域:
环境科学
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催化化学
·
材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Ge Ding,Tao Li,Jiang Li,Hongwei Du,Ying Xu,Tianli Wu
MBene, a novel two-dimensional material derived from bulk ternary metal borides (MAB phase), has attracted increasing attention in recent research. However, the strong covalent bonding within MAB phases hinders the synthesis of pure-phase MBene. Herein, two-dimensional molybdenum boride (MoB) MBene nanosheets are successfully synthesized via a mild hydrothermal etching method, featuring high specific surface area, abundant active sites, and excellent metallic conductivity properties that enable fast lithium-ion diffusion and superior structural stability. In-depth electrochemical in-situ and ex-situ characterizations confirm the rapid charge transfer kinetics, stable phase evolution, and reversible redox behavior of MoB MBene. Complementary theoretical calculations further reveal its robust structural stability, outstanding electronic conductivity, and low lithium-ion diffusion barriers. Consequently, the MoB MBene anode delivers a reversible capacity of 511 mAh g −1 after 2500 cycles at 1000 mA g −1 , and maintains capacities of 261 and 753 mAh g −1 after 200 cycles even at −20 °C and 50 °C, respectively. The corresponding LiFePO 4 -based full cell exhibits capacity retention ≈98.5 % (123 mAh g −1 ) after 1000 cycles at 1000 mA g −1 .
研究领域:
材料科学
·
储能技术
·
纳米技术
·
电化学
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DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Weida Zhang,Yusi Peng,Chunli Wang,Liangzhu Zhang,Meimei Xu,Shuai Zhao,Dan Li,Yong Yang
The inherently poor chemical stability and sensitivity of two-dimensional MXene materials pose significant challenges for their application in non-noble metal surface enhanced Raman scattering (SERS) under harsh conditions. Herein, a novel unfunctionalized Mo4/3B2 MBene with an ultraclean surface is reported as a stable, ultrasensitive SERS substrate for portable detection of environment toxins. The Mo4/3B2 MBene enables the detection of R6G down to 10–11 M with an SPF of 4.23 × 105, surpassing most MXene substrates, and its SERS mechanism is mainly attributed to the synergistic effects of enhanced charge transfer efficiency promoted by the ultraclean surface and vacancy modulated photon induced charge transfer resonance. Moreover, it exhibits excellent long-term SERS enhanced stability, which can maintain 86%, 75%, and 61% of its initial SERS performance after 45 days of storage at room temperature and 14 days of storage at low (−26 °C) and high (100 °C) temperatures. Notably, a portable Raman system based on Mo4/3B2 demonstrates ultrasensitive detection of the ricin A chain in real river water, achieving a concentration limit of 0.01 μg/mL and 97.8% accuracy assisted by the developed Transformer model. This work offers new insights for designing stable and sensitive MBene-based SERS substrates for field-deployable sensing in security and public health scenarios.
研究领域:
材料科学
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纳米技术
·
分析化学
·
环境科学
·
应用物理
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Qianxi Wang,Yuqi Wang,Jijun Tang,Yuqing Li,Jianjing Zhu,Xue Zhao,Rong Xie,Xiaoyan Wang,Yuqiao Chai,Jiaoxia Zhang
Aqueous zinc-ion batteries (AZIBs) display great promise for large-scale energy storage due to their high safety and low cost, but they are still hampered by limited capacity and insufficient cycling stability due to the cathodic expansion, anodic hydrogen evolution and corrosion, and the inherently low ionic conductivity. This work designed a V 2 O 5 nanofiber/MBene heterojunction to suppress expansion of cathode. The V 2 O 5 nanofibers provide multidimensional ion transport channels and abundant electrochemically active sites, while the introduction of MBene helps establish a more efficient electron-transport network and lowers the interfacial charge-transfer resistance. This unique heterojunction enhances the structural stability and enables highly efficient reversible redox reactions through a synergistic effect. The optimized VM-73 delivered a reversible specific capacity of 210 mAh g −1 at 1 A g −1 , with 92% capacity retention after 1000 cycles and 62.9% capacity retention even after 30,000 cycles. The electrode exhibits pronounced surface-controlled kinetics at high scan rates, with the surface-controlled contribution reaching 89%, together with a Zn 2+ diffusion coefficient ranging from 10 −8 to 10 −10 cm 2 s −1 , demonstrating rapid charge transfer and interfacial reaction kinetics. DFT calculations suggest that interfacial electronic coupling in the heterojunction is favorable for Zn 2+ storage and interfacial charge transport, leading to superior amplification performance and cycling stability. The synergistic effect of V 2 O 5 and MBene effectively promotes multi-step reversible reactions and suppresses side reactions, significantly improving the long-term electrochemical stability of the electrode.
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高影响因子
DESALINATION
·
2024
·
IF 8.3
Mingming Chang,Ruiru Yang,Xiaojing Lai,Xinzhi Wang,Jing Jiang
Solar-driven water evaporation for sustainable freshwater production is an efficient and economical solution to alleviate global water shortages. However, available solar evaporators still face efficiency and durability limitations. Herein, this challenge is overcome via the ingenious design of a three-dimensional (3D) monolithic porous architecture based on the reduced graphene oxide (rGO) and layered molybdenum boride (MBene). Benefiting from broad light absorption, efficient water activation and porous architecture feature, the rGO-MBene acquires an impressive rate of ~2.79 kg·m −2 ·h −1 to steam pure water under one-sun (1 kW/m 2 ), which is superior to most of state-of-the-art graphene-based evaporators reported so far. When applied to solar desalination, the rGO-MBene exhibits highly durable desalination capability with a salt-free evaporation surface. After continuous irradiation in a 3.5 % NaCl solution for 100 h, an almost constant evaporation rate of approximately 2.34 kg·m −2 ·h −1 can be maintained. Meanwhile, the rGO-MBene evaporator also demonstrates its robustness for effective production of freshwater from various wastewater sources. This work not only establishes an attractive example of rGO-hybridized architecture to achieve highly efficient solar evaporation for long-lasting salt-resistant desalination and multitasking water purification , but also provides exciting opportunities to design new MBene-based materials with the improved photothermal performance for sustainable solar conversion.
研究领域:
材料科学
·
环境工程
·
可再生能源
·
纳米技术
·
水净化技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）