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Zhu X, Yang K, Zhang Z, He S, Shen Z, Jiang W, Huang Y, Xu Y, Jiang Q, Pan L, Li Q, Yang J. Additive-Free Anode with High Stability: Nb 2CT x MXene Prepared by HCl-LiF Hydrothermal Etching for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28709-28718. [PMID: 38780517 DOI: 10.1021/acsami.4c05140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
MXenes, represented by Ti3C2Tx, have been widely studied in the electrochemical energy storage fields, including lithium-ion batteries, for their unique two-dimensional structure, tunable surface chemistry, and excellent electrical conductivity. Recently, Nb2CTx, as a new type of MXene, has attracted more and more attention due to its high theoretical specific capacity of 542 mAh g-1. However, the preparation of few-layer Nb2CTx nanosheets with high-quality remains a challenge, which limits their research and application. In this work, high-quality few-layer Nb2CTx nanosheets with a large lateral size and a high conductivity of up to 500 S cm-1 were prepared by a simple HCl-LiF hydrothermal etching method, which is 2 orders of magnitude higher than that of previously reported Nb2CTx. Furthermore, from its aqueous ink, the viscosity-tunable organic few-layer Nb2CTx ink was prepared by HCl-induced flocculation and N-methyl-2-pyrrolidone treatment. When using the organic few-layer Nb2CTx ink as an additive-free anode of lithium-ion batteries, it showed excellent cycling performance with a reversible specific capacity of 524.0 mAh g-1 after 500 cycles at 0.5 A g-1 and 444.0 mAh g-1 after 5000 cycles at 1 A g-1. For rate performance, a specific capacity of 159.8 mAh g-1 was obtained at a high current density of 5 A g-1, and an excellent capacity retention rate of about 95.65% was achieved when the current density returned to 0.5 A g-1. This work presents a simple and scalable process for the preparation of high-quality Nb2CTx and its aqueous/organic ink, which demonstrates important application potential as electrodes for electrochemical energy storage devices.
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Affiliation(s)
- Xiaoxue Zhu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Kai Yang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Zhen Zhang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Siyuan He
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Zihao Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Wei Jiang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Yiling Huang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Yan Xu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Qiutong Jiang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Limei Pan
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Qian Li
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Jian Yang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
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Chen G, Xie Y, Tang Y, Wang T, Wang Z, Yang C. Unraveling the Role of Metal Vacancy Sites and Doped Nitrogen in Enhancing Pseudocapacitance Performance of Defective MXene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307408. [PMID: 37940624 DOI: 10.1002/smll.202307408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/20/2023] [Indexed: 11/10/2023]
Abstract
Nitrogen-doped titanium carbides (MXene) films exhibit extraordinary volumetric capacitance when high-concentration sulfuric acid electrolyte is utilized owing to the enhancement of pseudocapacitance. However, the energy storage mechanism of nitrogen-doped MXene is unclear due to the complex electrode structure and electrolyte ions' behavior. Here, based on pristine MXene (Ti3C2O2), three different MXene structures are constructed by introducing metal vacancy sites and doped nitrogen atoms, namely, defective MXene (Ti2.9C2O2), nitrogen-doped MXene (Ti3C2O1.9N0.1), and nitrogen-doped MXene with metal vacancy sites (Ti2.9C2O1.9N0.1). Then, the density functional theory (DFT)-based calculations coupled with the effective screening medium reference interaction site method (ESM-RISM) are applied to reveal the electrochemical behavior at the electrode/electrolyte interfacial area. Through analyzing the electronic structure, electrical double-layer capacitance (EDLC), and equilibrium potential of the pseudocapacitance reaction, the specific effect of structural changes on their performance can be clarified: metal vacancy sites can reduce the potential difference of gap layer (Outer Helmholtz plane) at charged state and increase the electronic capacity of Ti, which can be used to explain the high pseudocapacitance, low charge transfer resistance and high-rate capacity properties of nitrogen-doped MXene observed in experiments.
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Affiliation(s)
- Guanglei Chen
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, No. 1 Dongxiang Road, Chang'an, Xi'an, Shaanxi, 710129, P. R. China
| | - Yangyang Xie
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, No. 1 Dongxiang Road, Chang'an, Xi'an, Shaanxi, 710129, P. R. China
- Innovation Center NPU Chongqing, Northwestern Polytechnical University, Chongqing, 400000, P. R. China
| | - Yi Tang
- College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, Shaanxi, 710054, P. R. China
| | - Tianshuai Wang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, No. 1 Dongxiang Road, Chang'an, Xi'an, Shaanxi, 710129, P. R. China
| | - Zhenyu Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Chenhui Yang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, No. 1 Dongxiang Road, Chang'an, Xi'an, Shaanxi, 710129, P. R. China
- Innovation Center NPU Chongqing, Northwestern Polytechnical University, Chongqing, 400000, P. R. China
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Zhang Y, Liu S, Xu R, Ruan S, Liu C, Ma Y, Li X, Chen Y, Zhou J. Solar-blind ultraviolet photodetector based on Nb 2C/ β-Ga 2O 3heterojunction. NANOTECHNOLOGY 2024; 35:165502. [PMID: 38150735 DOI: 10.1088/1361-6528/ad18e7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
β-Ga2O3has been widely investigated for its stability and thermochemical properties. However, the preparation ofβ-Ga2O3thin films requires complex growth techniques and high growth temperatures, and this has hindered the application ofβ-Ga2O3thin films. In this study,β-Ga2O3thin films with good crystalline quality were prepared using a green method, and an ultraviolet (UV) detector based onβ-Ga2O3with a photocurrent of 2.54 × 10-6A and a dark current of 1.19 × 10-8A has been developed. Two-dimensional materials have become premium materials for applications in optoelectronic devices due to their high conductivity. Here, we use the suitable energy band structure between Nb2C and Ga2O3to create a high carrier migration barrier, which reduces the dark current of the device by an order of magnitude. In addition, the device exhibits solar-blind detection, high responsiveness (28 A W-1) and good stability. Thus, the Nb2C/β-Ga2O3heterojunction is expected to be one of the promising devices in the field of UV photoelectric detection.
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Affiliation(s)
- Yongfeng Zhang
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Shuainan Liu
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Ruiliang Xu
- State Key Laboratory of High Power Semiconductor Lasers, School of Science, Changchun University of Science and Technology, 7089 Wei-Xing Road, Changchun 130022, People's Republic of China
| | - Shengping Ruan
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Caixia Liu
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Yan Ma
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Xin Li
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Yu Chen
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
| | - Jingran Zhou
- College of Electronic Science & Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
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Ren Z, Zhao Y, Gao Y, Li N, Qi Y, Shen C, Xie K. A multifunctional constrained host towards dendrite-free lithium anode. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yu Z, Han D, Chen J, Xu Z, Liu X, Yang S, Liu Y. In-situ growth of iron nanoparticles on porous carbon nanofibers for structural high-performance lithium metal anode. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140552] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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A graphdiyne analogue for dendrite-free lithium metal anode. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Shen B, Liao X, Zhang X, Ren HT, Lin JH, Lou CW, Li TT. Synthesis of Nb2C MXene-based 2D layered structure electrode material for high-performance battery-type supercapacitors. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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