iScience
·
2025
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IF 4.1
Shixin Wang,Yuzhe Gao,Zhanshu Yang,Hui Zhou,Desheng Ni,Chuanbo Li,Qi Li,Xiaoming Zhang
Transition metal oxide CoO has attracted extensive attention as a potential anode material for lithium-ion batteries (LIBs) due to its impressive theoretical specific capacity. However, pristine CoO often suffers from structural collapse during cycling, resulting in reduced capacity. To address these challenges, we developed a method to in situ grow octahedral CoO nanoparticles on hierarchical multilayer MoB MBene. The matched layer gradients and heterojunction formation between CoO and MoB MBene effectively accommodate the volume expansion of CoO. Following 200 cycles at 100 mA/g, the CoO/MoB MBene electrode achieves a capacity of 819.8 mAh/g, a significant 2.58-fold performance improvement over pristine CoO. Even at 1000 mA/g, the composite retains a capacity of 601.3 mAh/g after 600 cycles, while the pristine material retains only 142.4 mAh/g. This breakthrough suggests CoO/MoB MBene composite holds great promise in improving the performance of LIBs and may pave the way for the development of advanced materials.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Sen Jin,Zuhao Shi,Ruige Wang,Yitong Guo,Libo Wang,Qianku Hu,Kai Liu,Neng Li,Aiguo Zhou
Highly active and low-cost co-catalysts have a positive effect on the enhancement of solar H2 production. Here, we employ two-dimensional (2D) MBene as a noble-metal-free co-catalyst to boost semiconductor for photocatalytic H2 production. MoB MBene is a 2D nanoboride, which is directly made from MoAlB by a facile hydrothermal etching and manual scraping off process. The as-synthesized MoB MBene with purity >95 wt % is treated by ultrasonic cell pulverization to obtain ultrathin 2D MoB MBene nanosheets (∼0.61 nm) and integrated with CdS via an electrostatic interaction strategy. The CdS/MoB composites exhibit an ultrahigh photocatalytic H2 production activity of 16,892 μmol g–1 h–1 under visible light, surpassing that of pure CdS by an exciting factor of ≈1135%. Theoretical calculations and various measurements account for the high performance in terms of Gibbs free energy, work functions, and photoelectrochemical properties. This work discovers the huge potential of these promising 2D MBene family materials as high-efficiency and low-cost co-catalysts for photocatalytic H2 production.
研究领域:
材料科学
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催化
·
可再生能源
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纳米技术
·
光化学
✓ 已验证
产品关联
DOI
PubMed
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.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wei Xiong,Xingyu Feng,Yi Xiao,Tao Huang,Xiaoyan Li,Zhencheng Huang,Shenghua Ye,Yongliang Li,Xiangzhong Ren,Xinzhong Wang,Xiaoping Ouyang,Qianling Zhang,Jianhong Liu
MBene, an emerging two-dimensional material generated from bulk ternary metallic boride (MAB phase), has gradually attracted increasing research attention. However, the fabrication of MBene is still a great challenge, resulting in no literature reported about the application of MBene in energy storage fields (e.g. lithium-ion batteries). It is not advisable to adopt the same HF etching strategy which is generally used for the fabrication of MXene owing to the severely corrosive and toxic properties of the HF acid. Here, a fluorine-free hydrothermal-assisted alkane solution etching method is used to prepare the two-dimensional (2D) MoB MBene from MoAlB. The 2D MoB MBene as an anode material in LIBs exhibits a high electrochemical performance, the results exhibit a reversible specific capacity of 144.2 mAh g −1 after 1000 cycles at the current density of 2 A g −1 , which is higher than many reported MXene anodes. This fluorine-free method provides a promising green strategy for exploring series of MBene materials for a wealth of application fields.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
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
✓ 已验证
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
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纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）