1
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Schmiedecke B, Wu B, Schultz T, Emerenciano AA, Sharma N, Douglas-Henry DA, Koutsioukis A, Görüryılmaz MT, Nicolosi V, Petit T, Koch N, Sofer Z, Browne MP. Enhancing the oxygen evolution reaction activity of CuCo based hydroxides with V 2CT x MXene. JOURNAL OF MATERIALS CHEMISTRY. A 2024:d4ta02700k. [PMID: 39157537 PMCID: PMC11325309 DOI: 10.1039/d4ta02700k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 08/02/2024] [Indexed: 08/20/2024]
Abstract
The oxygen evolution reaction (OER) is a key reaction in the production of green hydrogen by water electrolysis. In alkaline media, the current state of the art catalysts used for the OER are based on non-noble metal oxides. However, despite their huge potential as OER catalysts, these materials exhibit various disadvantages including lack of stability and conductivity that hinder the wide-spread utilization of these materials in alkaline electrolyzer devices. This study highlights the innovative chemical functionalization of a mixed copper cobalt hydroxide with the V2CT x MXene to enhance the OER efficiency, addressing the need for effective electrocatalytic interfaces for sustainable hydrogen production. The herein synthesized CuCo@V2CT x electrocatalysts demonstrate remarkable activity, outperforming the pure CuCo catalysts for the OER and moreover show increased efficiency after 12 hours of continuous operation. This strategic integration improved the water oxidation performance of the pure oxide material by improving the composite's hydrophilicity, charge transfer properties and ability to hinder Cu leaching. The materials were characterized using an array of materials characterization techniques to help decipher both structure of the composite materials after synthesis and to elucidate the reasoning for the OER enhancement for the composites. This work demonstrates the significant potential of TMO-based nanomaterials combined with V2CT x for advanced innovative electrocatalytic interfaces in energy conversion applications.
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Affiliation(s)
- Bastian Schmiedecke
- Helmholtz Young Investigator Group Electrocatalysis: Synthesis to Devices, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Bing Wu
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5 166 28 Prague 6 Czech Republic
| | - Thorsten Schultz
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Berlin 14109 Germany
- Institut für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin Berlin 12489 Germany
| | - Aline Alencar Emerenciano
- Helmholtz Young Investigator Group Electrocatalysis: Synthesis to Devices, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Namrata Sharma
- Young Investigator Group Nanoscale Solid-Liquid Interfaces, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Danielle A Douglas-Henry
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin College Green Dublin D02 PN40 Ireland
| | - Apostolos Koutsioukis
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin College Green Dublin D02 PN40 Ireland
| | - Mehmet Turan Görüryılmaz
- Helmholtz Young Investigator Group Electrocatalysis: Synthesis to Devices, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Valeria Nicolosi
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin College Green Dublin D02 PN40 Ireland
| | - Tristan Petit
- Young Investigator Group Nanoscale Solid-Liquid Interfaces, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Norbert Koch
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Berlin 14109 Germany
- Institut für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin Berlin 12489 Germany
| | - Zdenek Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5 166 28 Prague 6 Czech Republic
| | - Michelle P Browne
- Helmholtz Young Investigator Group Electrocatalysis: Synthesis to Devices, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Str. 15 12489 Berlin Germany
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2
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Lu Z, Kang Y, Du Y, Ma X, Ma W, Zhang J. Functionalizing Janus-structured Ti 2B 2 unveils exceptional capacity and performance in lithium-ion battery anodes. J Colloid Interface Sci 2024; 661:662-670. [PMID: 38310772 DOI: 10.1016/j.jcis.2024.01.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/15/2024] [Accepted: 01/20/2024] [Indexed: 02/06/2024]
Abstract
With the ever-growing demand for high-capacity energy storage technologies, lithium-ion batteries (LIBs) have drawn increasing attention. Ti2B2, a typical two-dimensional MBenes material, has been considered as a strong contender for anode materials of LIBs with significant performance. However, the limited Li storage capacity of MBenes has hindered its wide applications. To address this issue, we have functionalized Janus-structured MBenes, denoted as Ti2B2XaXb (Xa/Xb = N, O, S, Se). Employing first-principles simulations based on density functional theory, we have investigated the geometric characteristics and electrochemical properties of Ti2B2XaXb. Our results reveal that Ti2B2NO exhibits an exceptionally large theoretical specific capacity of 1091.17 mAh·g-1, improved by 2.4 times compared with the pristine Ti2B2 (456 mAh·g-1). Li atoms on the O side of Ti2B2NO possess a low diffusion barrier of 0.33 eV, which is conducive to the rapid charging and discharging of the battery. Moreover, the open-circuit voltage of Ti2B2NO within the safe voltage range of 0-1 V ensures the safety of battery operation. Overall, our study sheds light on understanding the underlying mechanism of surface functionalization on the Li storage properties of Janus-structured MBenes from atomic-scale, laying the groundwork for future design of high-performance anode materials.
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Affiliation(s)
- Zhiqiang Lu
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, China
| | - Yuchong Kang
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, China
| | - Yingjie Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
| | - Xiaoyun Ma
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, China
| | - Wei Ma
- Ningxia Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan 750021, China.
| | - Jin Zhang
- Max Planck Institute for the Structure and Dynamics of Matter and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761, Germany.
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Ahmad S, Xu H, Chen L, Din HU, Zhou Z. Functionalized MBenes as promising anode materials for high-performance alkali-ion batteries: a first-principles study. NANOTECHNOLOGY 2024; 35:285401. [PMID: 38574464 DOI: 10.1088/1361-6528/ad3a6d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
The discovery of novel electrode materials based on two-dimensional (2D) structures is critical for alkali metal-ion batteries. Herein, we performed first-principles computations to investigate functionalized MXenes, Mo2BT2(T = O, S), which are also regarded as B-based MXenes, or named as MBenes, as potential anode materials for Li-ion batteries and beyond. The pristine and T-terminated Mo2BT2(T = O, S) monolayers reveal metallic character with higher electronic conductivity and are thermodynamically stable with an intrinsic dipole moment. Both Mo2BO2and Mo2BS2monolayers exhibit high theoretical Li/Na/K storage capacity and low ion diffusion barriers. These findings suggest that functionalized Mo2BT2(T = O, S) monolayers are promising for designing viable anode materials for high-performance alkali-ion batteries.
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Affiliation(s)
- Sheraz Ahmad
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, People's Republic of China
| | - Hu Xu
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, People's Republic of China
| | - Letian Chen
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, People's Republic of China
| | - H U Din
- Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department of Physics, Bacha Khan University, Charsadda, KP, Pakistan
| | - Zhen Zhou
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, People's Republic of China
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4
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Alharbi SAR, Yu M. Crucial role of interfacial interaction in 2D polar SiGe/GeC heterostructures. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:215301. [PMID: 38364275 DOI: 10.1088/1361-648x/ad2a0a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/16/2024] [Indexed: 02/18/2024]
Abstract
The planar charge transfer is a distinctive characteristic of the two-dimensional (2D) polar materials. When such 2D polar materials are involved in vertical heterostructures (VHs), in addition to the van der Waals (vdW) interlayer interaction, the interfacial interaction triggered by the in-plane charge transfer will play a crucial role. To deeply understand such mechanism, we conducted a comprehensive theoretical study focusing on the structural stability and electronic properties of 2D polar VHs built by commensurate SiGe/GeC bilayers with four species ordering patterns (classified as a C-group with patterns I and II and a Ge-group with patterns III and IV, respectively). It was found that the commensurate SiGe/GeC VHs are mainly stabilized by interfacial interactions (including the electrostatic interlayer bonding, the vdW force, as well as thesp2/sp3orbital hybridization), with the Ge-group being the most energetically favorable than the C-group. A net charge redistribution occurs between adjacent layers, which is significant (∼0.23-0.25 e cell-1) in patterns II and IV, but slightly small (∼0.05-0.09 e cell-1) in patterns I and III, respectively, forming spontaneousp-nheterojunctions. Such interlayer charge transfer could also lead to a polarization in the interfacial region, with the electron depletion (accumulation) close to the GeC layer and the electron accumulation (depletion) close to the SiGe layer in the C-group (the Ge-group). This type of interface dipoles could induce a built-in electric field and help to promote photogenerated electrons (holes) migration. Furthermore, a semi-metal nature with a tiny direct band gap at the SiGe layer and a semiconducting nature at the GeC layer indicate that the commensurate SiG/GeC VHs possess a type-I band alignment of heterojunction and have a wide spectrum of light absorption capabilities, indicating its promising applications for enhancing light-matter interaction and interfacial engineering.
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Affiliation(s)
- Safia Abdullah R Alharbi
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
- Department of Physics, College of Sciences, Al Imam Mohammad Ibn Saud Islamic University (IMISU), Riyadh 11623, Saudi Arabia
| | - Ming Yu
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
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5
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Wan Z, Li C, Liu R, Zhou W, Fan W, Huang C, Liu Y. Probing Thermal Transport on a Suspended Ti 3C 2T x MXene Film via a Photothermally Actuated Resonator. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4999-5008. [PMID: 38241705 DOI: 10.1021/acsami.3c16291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
Two-dimensional (2D) Ti3C2Tx MXene materials show great potential in electrochemical and flexible sensors due to their high electrical conductivity, good chemical stability, and special delaminated structure. However, their thermal properties were rarely studied, which remarkably affect the stability and safety of various devices. Here, we fabricated a suspended MXene drum resonator photothermally driven by a sinusoidally modulated laser, measured the thermal time constant by demodulating the thermomechanical motion, and then calculated the thermal conductivity and thermal diffusivity of the MXene film. Experiments show the thermal conductivity of the film increases from 3.10 to 3.58 W/m·K while the thermal diffusivity from 1.06 × 10-6 to 1.22 × 10-6 m2/s when temperature increases from 300 to 360 K. We also confirm the film thermal conductivity is mainly contributed by phonon transport rather than electron transport. Furthermore, the relationship between the mechanical and thermal properties of the MXene films was disclosed. The thermal conductivity decreases when film strain increases, caused by enhanced phonon scattering and softening of high-frequency phonons. The measurements provide a noninvasive method to analyze the thermal characteristics of suspended MXene films, which can be further extended to the thermal properties of other 2D materials.
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Affiliation(s)
- Zhen Wan
- School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
| | - Cheng Li
- School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
- Research Institute of Beihang University in Shenzhen, Shenzhen 518055, China
| | - Ronghui Liu
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Wei Zhou
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Wenjing Fan
- School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
| | - Chuanxue Huang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Yang Liu
- School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
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6
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Xiong Y, Wang Y, Ma N, Zhang Y, Luo S, Fan J. First principles study of B 7N 5 as a high capacity electrode material for K-ion batteries. Phys Chem Chem Phys 2023; 25:24303-24312. [PMID: 37470079 DOI: 10.1039/d3cp02391e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Potassium-ion batteries (KIBs) are considered a promising candidate for energy storage owing to their low cost and similar "rocking chair" mechanism to lithium-ion batteries. However, there is a great lack of suitable and high working performance electrode materials for KIBs. Herein, first principles calculations based on density functional theory (DFT) are applied to evaluate the potential of the B7N5 monolayer as an anode material for KIBs. It is found that B7N5 shows negative adsorption energies for Li/Na/K on its surface. Besides, the B7N5 monolayer can effectively achieve double-layer adsorption for K atoms on both sides of the monolayer surface, while one-layer adsorption for Li and Na. Thus, B7N5 exhibits an ultra-high theoretical capacity of 1471.5 mA h g-1 for KIBs, which is almost the highest value for the anode materials reported in the literature. And the attractive capacity for KIBs is mainly contributed by the multiple empty electron orbitals of the constituting elements of B7N5 and the small distance mismatch. In addition, K atoms display high diffusivities on B7N5 with low energy barriers of 0.10 eV, and the open circuit voltages of 0.14 V for KIBs are also smaller compared with previous research. It is also shown that after adsorbing K, the semiconducting B7N5 monolayer is transformed to a metallic state with good conductivity. Furthermore, despite the large size of K+, the maximum change in the lattice constant of B7N5 is only 1.32%, indicating structural stability and ensuring good cycling stability for KIBs. The above-mentioned results suggest that B7N5 is a potential anode material for KIBs.
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Affiliation(s)
- Yu Xiong
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
| | - Yuhang Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
| | - Ninggui Ma
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
| | - Yaqin Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
| | - Shuang Luo
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
| | - Jun Fan
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
- Center for Advance Nuclear Safety and Sustainable Department, City University of Hong Kong, Hong Kong, China
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7
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Zheng S, Li C, Wang C, Ma D, Wang B. The Combined Effects of an External Field and Novel Functional Groups on the Structural and Electronic Properties of TMDs/Ti 3C 2 Heterostructures: A First-Principles Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1218. [PMID: 37049310 PMCID: PMC10097373 DOI: 10.3390/nano13071218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
The stacking of Ti3C2 with transition metal dihalide (TMDs) materials is an effective strategy to improve the physical properties of a single material, and the tuning of the related properties of these TMDs/Ti3C2 heterostructures is also an important scientific problem. In this work, we systematically investigated the effects of an external field and novel functional groups (S, Se, Cl, Br) on the structural and electronic properties of TMDs/Ti3C2X2 heterostructures. The results revealed that the lattice parameters and interlayer distance of TMDs/Ti3C2 increased with the addition of functional groups. Both tensile and compressive strain obviously increased the interlayer distance of MoS2/Ti3C2X2 (X = S, Se, Cl, Br) and MoSe2/Ti3C2X2 (X = Se, Br). In contrast, the interlayer distance of MoSe2/Ti3C2X2 (X = S, Cl) decreased with increasing compressive strain. Furthermore, the conductivity of TMDs/Ti3C2 increased due to the addition of functional groups (Cl, Br). Strain caused the bandgap of TMDs to narrow, and effectively adjusted the electronic properties of TMDs/Ti3C2X2. At 9% compressive strain, the conductivity of MoSe2/Ti3C2Cl2 increased significantly. Meanwhile, for TMDs/Ti3C2X2, the conduction band edge (CBE) and valence band edge (VBE) at the M and K points changed linearly under an electric field. This study provides valuable insight into the combined effects of an external field and novel functional groups on the related properties of TMDs/Ti3C2X2.
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Affiliation(s)
- Siyu Zheng
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
| | - Chenliang Li
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
| | - Chaoying Wang
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
| | - Decai Ma
- School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Baolai Wang
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
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8
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Nie X, Ji Y, Ding YM, Li Y. Layer-stacking of chalcogenide-terminated MXenes Ti 2CT 2(T = O, S, Se, Te) and their applications in metal-ion batteries. NANOTECHNOLOGY 2022; 34:105704. [PMID: 36562513 DOI: 10.1088/1361-6528/aca9d7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Owning to limited supply of lithium for Li-ion batteries, the development of non-Li-ion batteries (such as Na+, K+Mg2+, Ca2+, and Al3+ion batteries) has attracted significant research interest. In this work, by means of the first-principles calculations, we systematically investigated the performance of chalcogenide-terminated MXenes Ti2CT2(T = O, S, Se, and Te) as electrodes for Li-ion and non-Li-ion batteries, as well as the layer-stacking and electronic properties of Ti2CT2. We find that the stacking type of O and Te terminated Ti2C multilayers with AA stacking differs from that of S and Se terminated Ti2C multilayers with AB stacking. More importantly, Ti2CO2monolayer can be potential anode material for Na- and K-ion batteries with high capacities and very low diffusion barriers (0.03-0.11 eV), while Ti2CS2and Ti2CSe2are promising anode materials with relatively low average open circuit voltages (OCVs) for Na-, K-, and Ca-ion batteries (0.4-0.87 V). Among these materials, Ti2CS2exhibits the largest ion capacity of 616 mAh g-1. These results of our work may inspire further studies of Ti2C-MXenes multilayers as electrodes for metal-ion batteries either experimentally or theoretically.
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Affiliation(s)
- Xiaomin Nie
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, People's Republic of China
- Institute of Functional Nano & Solf Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Yujin Ji
- Institute of Functional Nano & Solf Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Yi-Min Ding
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, People's Republic of China
| | - Youyong Li
- Institute of Functional Nano & Solf Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa 999078, Macau SAR, People's Republic of China
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Zhang W, Qu J, Wang X, Huang H, Yao M. Performance investigation of Ti xN x-1O 2MXene ( x= 2, 3, 4) as anode materials for Na-ion batteries by first-principles calculation. NANOTECHNOLOGY 2022; 33:495403. [PMID: 36067729 DOI: 10.1088/1361-6528/ac8f99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
The number of MXene layers plays a crucial role in their performance when they are used as anode materials for sodium-ion batteries. Herein, Ti-based nitride MXenes with different layers, TixNx-1O2MXene (x= 2, 3, 4) structures, were constructed to calculate the structural stability of their precursor, electronic properties after etching, and sodium storage behavior compared with the common Ti2CO2and Ti3C2O2MXene. First-principles calculations indicate that nitride MXenes possess a better rate capability than carbide MXenes of the same thickness. Moreover, the barrier for Na diffusion on the Ti2NO2MXene surface (0.114 eV) is lowest. Meanwhile, comparing the properties of three nitride MXenes with different thicknesses, Ti2NO2MXene performs relatively well with a high theoretical capacity with 756 mAh g-1and a lower open circuit voltage of 1.1 V. In conclusion, the performance improvement of nitride MXene is not linear with thickness, because that of Ti3N2O2MXene is relatively weaker. This work lays the foundation for the feasibility of Ti3N2Txexperimental preparation and provides corresponding evidence on the choice of MXene thickness. More attention should be paid to the etching method for Ti2NTxMXene.
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Affiliation(s)
- Wenshu Zhang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Jianping Qu
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Xudong Wang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Hao Huang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Man Yao
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), Dalian University of Technology, Dalian, 116024, People's Republic of China
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10
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Sharma SK, Kumar A, Sharma G, Vo DVN, García-Peñas A, Moradi O, Sillanpää M. MXenes based nano-heterojunctions and composites for advanced photocatalytic environmental detoxification and energy conversion: A review. CHEMOSPHERE 2022; 291:132923. [PMID: 34813851 DOI: 10.1016/j.chemosphere.2021.132923] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/26/2021] [Accepted: 11/14/2021] [Indexed: 05/22/2023]
Abstract
Extensive research is being done to develop multifunctional advanced new materials for high performance photocatalytic applications in the field of energy production and environmental detoxification, MXenes have emerged as promising materials for enhancing photocatalytic performance owing to their excellent mechanical properties, appropriate Fermi levels, and adjustability of chemical composition. Numerous experimental and theoretical research works implied that the dimensions of MXenes have a significant impact on their performance. For photocatalysis to thrive in the future, we must understand the current state of the art for MXene in different dimensions. Using MXene co-catalysts in widely used in photocatalytic applications such as CO2 reduction, hydrogen production and organic pollutant oxidation, this study focuses on the most recent developments in MXenes based materials, structural modifications, innovations in reaction and material engineering. It has been reported that using 5 mg of CdS-MoS2-MXene researchers were able to generate as high as 9679 μmol/g/h hydrogen under visible light. The MXenes based heterojunction photocatalyst Co3O4/MXene was utilized to degrade 95% bisphenol A micro-pollutant in just 7 min. Numerous novel materials, their preparations and performances have been discussed. Depending upon the nature of MXene-based materials, the synthesis techniques and photocatalytic mechanism of MXenes as co-catalyst are also summarized. Finally, some final thoughts and prospects for developing highly efficient MXene-based photocatalysts are provided which will indeed motivate researchers to design novel hybrid materials based on MXenes for sustainable solutions to energy and pollution issues.
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Affiliation(s)
- Sunil Kumar Sharma
- School of Advance Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, India, 173229
| | - Amit Kumar
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Laboratory for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518060, PR China; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, India, 173229; School of Science and Technology, Glocal University, Saharanpur, India.
| | - Gaurav Sharma
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Laboratory for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518060, PR China; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, India, 173229.
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
| | - Alberto García-Peñas
- University Carlos III of Madrid, Av. de la Universidad, 3028911, Leganés, Madrid, Spain
| | - Omid Moradi
- Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran
| | - Mika Sillanpää
- Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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Tasnim KJ, Alharbi SAR, Musa MRK, Lovell SH, Akridge ZA, Yu M. Insight into the stacking and the species-ordering dependences of interlayer bonding in SiC/GeC polar heterostructures. NANOTECHNOLOGY 2022; 33:155706. [PMID: 34972095 DOI: 10.1088/1361-6528/ac475b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Two-dimensional (2D) polar materials experience an in-plane charge transfer between different elements due to their electron negativities. When they form vertical heterostructures, the electrostatic force triggered by such charge transfer plays an important role in the interlayer bonding beyond van der Waals (vdW) interaction. Our comprehensive first principle study on the structural stability of the 2D SiC/GeC hybrid bilayer heterostructure has found that the electrostatic interlayer interaction can induce theπ-πorbital hybridization between adjacent layers under different stacking and out-of-plane species ordering, with strong hybridization in the cases of Si-C and C-Ge species orderings but weak hybridization in the case of the C-C ordering. In particular, the attractive electrostatic interlayer interaction in the cases of Si-C and C-Ge species orderings mainly controls the equilibrium interlayer distance and the vdW interaction makes the system attain a lower binding energy. On the contrary, the vdW interaction mostly controls the equilibrium interlayer distance in the case of the C-C species ordering and the repulsive electrostatic interlayer force has less effect. Interesting finding is that the band structure of the SiC/GeC hybrid bilayer is sensitive to the layer-layer stacking and the out-of-plane species ordering. An indirect band gap of 2.76 eV (or 2.48 eV) was found under the AA stacking with Si-C ordering (or under the AB stacking with C-C ordering). While a direct band gap of 2.00-2.88 eV was found under other stacking and species orderings, demonstrating its band gap tunable feature. Furthermore, there is a charge redistribution in the interfacial region leading to a built-in electric field. Such field will separate the photo-generated charge carriers in different layers and is expected to reduce the probability of carrier recombination, and eventually give rise to the electron tunneling between layers.
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Affiliation(s)
- Kazi Jannatul Tasnim
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
| | - Safia Abdullah R Alharbi
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
| | - Md Rajib Khan Musa
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
| | - Simon Hosch Lovell
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
| | - Zachary Alexander Akridge
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
| | - Ming Yu
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, United States of America
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Li N, Li Y, Fan J. Prediction of chemically ordered dual transition metal carbides (MXenes) as high-capacity anode materials for Na-ion batteries. NANOSCALE 2021; 13:7234-7243. [PMID: 33889918 DOI: 10.1039/d1nr00681a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Na-ion batteries have attracted tremendous attention. In this work, various electrochemical properties of three titanium zirconium dual transition metal carbides (TiZrCO2, Ti2ZrC2O2, and TiZr2C2O2) as anode materials for Na-ion batteries are systemically investigated by using density functional theory calculations. Firstly, all these three systems are dynamically stable and exhibit good conductivities. Besides, all of them can realize energetically favorable double-layer adsorption of Na atoms on each side, which endows them with obviously higher capacities than their corresponding mono-titanium- and zirconium-based MXenes. Moreover, their low diffusion energy barriers (<0.3 eV) and suitable open circuit voltages further indicate that these three titanium zirconium dual transition metal carbides are promising anode materials for Na-ion batteries. More importantly, our work opens an avenue to exploit other dual transition metal carbides as high-performance anode materials for Na-ion batteries.
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Affiliation(s)
- Na Li
- Department of Materials Science & Engineering, City University of Hong Kong, Hong Kong, China.
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