1
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Dai YX, Li YX, Chauvin J, Zhang XJ, Cosnier S, Marks RS, Shan D. l-Cysteine-Tuned the Hierarchical Structure Based on Benzimidazole: Synthesis, Characterization, and Application in Ratiometric Electrochemiluminescence Immunoassay. ACS Sens 2024; 9:2176-2182. [PMID: 38537645 DOI: 10.1021/acssensors.4c00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2024]
Abstract
Efficient and robust electrochemiluminescence (ECL) emitters are crucial for enhancing the ECL immunosensor sensitivity. This study introduces a novel ECL emitter, CoBIM/Cys, featuring a hierarchical core-shell structure. The core of the structure is created through the swift coordination between the sulfhydryl and carboxyl groups of l-cysteine (l-Cys) and cobalt ions (Co2+), while the shell is constructed by sequentially coordinating benzimidazole (BIM) with Co2+. This design yields a greater specific surface area and a more intricate porous structure compared to CoBIM, markedly enhancing mass transfer and luminophore accessibility. Moreover, the l-Cys and Co2+ core introduces Co-S and Co-O catalytic sites, which improve the catalytic decomposition of H2O2, leading to an increased production of hydroperoxyl radicals (OOH•). This mechanism substantially amplifies the ECL performance. Leveraging the competitive interaction between isoluminol and BIM for OOH• during ECL emission, we developed a ratiometric immunosensor for cardiac troponin I (cTnI) detection. This immunosensor demonstrates a remarkably broad detection range (1 pg mL-1 to 10 ng mL-1), a low detection limit (0.4 pg mL-1), and exceptional reproducibility and specificity.
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Affiliation(s)
- Yu-Xuan Dai
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Yi-Xuan Li
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Jérome Chauvin
- University of Grenoble Alpes-CNRS, DCM UMR 5250, F-38000 Grenoble, France
| | - Xue-Ji Zhang
- School of Biomedical Engineering, Health Science Centre, Shenzhen University, Shenzhen 518060, PR China
| | - Serge Cosnier
- University of Grenoble Alpes-CNRS, DCM UMR 5250, F-38000 Grenoble, France
- Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M. Strzody 9, 44-100 Gliwice, Poland
| | - Robert S Marks
- Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva 90089, Israel
| | - Dan Shan
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
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2
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Eom TH, Cho SH, Suh JM, Kim T, Yang JW, Lee TH, Jun SE, Kim SJ, Lee J, Hong SH, Jang HW. Visible Light Driven Ultrasensitive and Selective NO 2 Detection in Tin Oxide Nanoparticles with Sulfur Doping Assisted by l-Cysteine. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106613. [PMID: 35060312 DOI: 10.1002/smll.202106613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/18/2021] [Indexed: 06/14/2023]
Abstract
In the pandemic era, the development of high-performance indoor air quality monitoring sensors has become more critical than ever. NO2 is one of the most toxic gases in daily life, which induces severe respiratory diseases. Thus, the real-time monitoring of low concentrations of NO2 is highly required. Herein, a visible light-driven ultrasensitive and selective chemoresistive NO2 sensor is presented based on sulfur-doped SnO2 nanoparticles. Sulfur-doped SnO2 nanoparticles are synthesized by incorporating l-cysteine as a sulfur doping agent, which also increases the surface area. The cationic and anionic doping of sulfur induces the formation of intermediate states in the band gap, highly contributing to the substantial enhancement of gas sensing performance under visible light illumination. Extraordinary gas sensing performances such as the gas response of 418 to 5 ppm of NO2 and a detection limit of 0.9 ppt are achieved under blue light illumination. Even under red light illumination, sulfur-doped SnO2 nanoparticles exhibit stable gas sensing. The endurance to humidity and long-term stability of the sensor are outstanding, which amplify the capability as an indoor air quality monitoring sensor. Overall, this study suggests an innovative strategy for developing the next generation of electronic noses.
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Affiliation(s)
- Tae Hoon Eom
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Hwan Cho
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jun Min Suh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Taehoon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sang Eon Jun
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Ju Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jongwon Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seong-Hyeon Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 16229, Republic of Korea
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3
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Deng W, Chen X, Hu A, Zhang S. Graphitic carbon-wrapped NiO embedded three dimensional nitrogen doped aligned carbon nanotube arrays with long cycle life for lithium ion batteries. RSC Adv 2018; 8:28440-28446. [PMID: 35542488 PMCID: PMC9083915 DOI: 10.1039/c8ra03352h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/30/2018] [Indexed: 11/21/2022] Open
Abstract
In this work, a three-dimensional nitrogen doped aligned carbon nanotube array (NACNTs)@NiO@graphitic carbon composite was fabricated by an effective strategy involving nebulized ethanol assisted infiltration, In this structure, the NiO nanoparticles were wrapped by graphitic carbon layers and NiO@graphitic carbon core–shell nanoparticles adhered strictly to the surface of NACNTs to form a highly ordered 3D structure. When this composite was used as an anode for lithium ion batteries, the well-ordered pore of its NACNTs can facilitate the electrolyte to penetrate and improve electronic conductivity. At the same time, the graphitic layers can promote the stability of a solid electrolyte interface film. Therefore, the NACNTs@NiO@graphitic carbon composite containing 68.1 wt% NiO delivers excellent capacity retention of 91.6% after 200 cycles at 0.2C. NACNTs@NiO@graphitic carbon composites were synthesized with the help of nebulizing. The outstanding performances are attributed to the original structure of NACNTs@NiO@graphitic carbon.![]()
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Affiliation(s)
- Weina Deng
- Hunan Key Laboratory of Applied Environmental Photocatalysis
- Changsha University
- Changsha 410022
- China
| | - Xiaohua Chen
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
| | - Aiping Hu
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
| | - Shiying Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis
- Changsha University
- Changsha 410022
- China
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4
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Wang M, Ma R, Liu Y, Chung C, Deng Y, Lu Z. Ionic Liquid Mediated Synthesis of Lath Shaped CuO Micro-Assembles as Extremely Stable Anode Material for Lithium-Ion Batteries. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Man Wang
- Department of Materials Science and Engineering; Southern University of Science and Technology; Shenzhen Guangdong 518055 China
| | - Ruguang Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences; Shanghai 200050 China
| | - Ying Liu
- Department of Physics and Materials Science; City University of Hong Kong, 83 Tat Chee Avenue; Kowloon Hong Kong China
| | - C.Y. Chung
- Department of Physics and Materials Science; City University of Hong Kong, 83 Tat Chee Avenue; Kowloon Hong Kong China
| | - Yonghong Deng
- Department of Materials Science and Engineering; Southern University of Science and Technology; Shenzhen Guangdong 518055 China
| | - Zhouguang Lu
- Department of Materials Science and Engineering; Southern University of Science and Technology; Shenzhen Guangdong 518055 China
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5
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Grain Boundaries Enriched Hierarchically Mesoporous MnO/Carbon Microspheres for Superior Lithium Ion Battery Anode. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Sun Y, Zuo X, Xu D, Sun D, Zhang X, Zeng S. Flower-like NiCo2O4Microstructures as Promising Anode Material for High Performance Lithium-Ion Batteries: Facile Synthesis and its Lithium Storage Properties. ChemistrySelect 2016. [DOI: 10.1002/slct.201601147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuanwei Sun
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
| | - Xintao Zuo
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
| | - Dan Xu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
| | - Dezhi Sun
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
| | - Xianxi Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
| | - Suyuan Zeng
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng 252059 China
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7
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Hernández-Gordillo A, Rodríguez-González V, Oros-Ruiz S, Gómez R. Photodegradation of Indigo Carmine dye by CdS nanostructures under blue-light irradiation emitted by LEDs. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.09.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Feng N, Sun X, Yue H, He D. Rational design of hierarchical Ni embedded NiO hybrid nanospheres for high-performance lithium-ion batteries. RSC Adv 2016. [DOI: 10.1039/c6ra12846g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Uniform-sized Ni embedded NiO nanospheres exhibit a high capacity of 453 mA h g−1 (12C) and 800 mA h g−1 (0.2C) after 300 cycles.
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Affiliation(s)
- Na Feng
- Northwest Institute of Nuclear Technology
- Xi'an
- China
| | - Xiaolei Sun
- Leibniz Institute for Solid State and Material Research
- Dresden
- Germany
| | - Hongwei Yue
- School of Physical Science and Technology
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou
- China
| | - Deyan He
- School of Physical Science and Technology
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education
- Lanzhou University
- Lanzhou
- China
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9
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Boyjoo Y, Wang M, Pareek VK, Liu J, Jaroniec M. Synthesis and applications of porous non-silica metal oxide submicrospheres. Chem Soc Rev 2016; 45:6013-6047. [DOI: 10.1039/c6cs00060f] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A variety of metal oxide particles of spherical morphology from nano to micrometer size have been reviewed with a special emphasis on the appraisal of synthetic strategies and applications in biomedical, environmental and energy-related areas.
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Affiliation(s)
- Yash Boyjoo
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Meiwen Wang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Vishnu K. Pareek
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Jian Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Mietek Jaroniec
- Department of Chemistry & Biochemistry
- Kent State University
- Kent
- USA
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10
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Controllable synthesis of hierarchical porous nickel oxide sheets arrays as anode for high-performance lithium ion batteries. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.10.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Hernández-Gordillo A, Oros-Ruiz S, Gómez R. Preparation of efficient cadmium sulfide nanofibers for hydrogen production using ethylenediamine (NH2CH2CH2NH2) as template. J Colloid Interface Sci 2015; 451:40-5. [DOI: 10.1016/j.jcis.2015.03.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 03/25/2015] [Accepted: 03/27/2015] [Indexed: 10/23/2022]
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12
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Liang Q, Huang ZH, Kang F, Yang QH. Facile Synthesis of Crystalline Polymeric Carbon Nitrides with an Enhanced Photocatalytic Performance under Visible Light. ChemCatChem 2015. [DOI: 10.1002/cctc.201500076] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Wang J, Lin S, Han Z, Liu Y. Glutamine-assisted synthesis of Cu-doped CeO2 nanowires with an improved low-temperature CO oxidation activity. RSC Adv 2015. [DOI: 10.1039/c4ra16556j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glutamine (GLN)-assisted Cu-doped CeO2 nanowires exhibit an outstanding performance for CO oxidation and can completely convert CO at 90 °C.
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Affiliation(s)
- Juan Wang
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Siwen Lin
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Zeye Han
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Yuping Liu
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
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14
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Ibupoto ZH, Nafady A, Soomro RA, Sirajuddin S, Hussain Sherazi ST, Abro MI, Willander M. Glycine-assisted synthesis of NiO hollow cage-like nanostructures for sensitive non-enzymatic glucose sensing. RSC Adv 2015. [DOI: 10.1039/c4ra15858j] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, a highly sensitive non-enzymatic glucose sensor was developed based on NiO hollow cage-like nanostructures (NiO HCs).
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Affiliation(s)
| | - Aynam Nafady
- Department of Chemistry
- Sohag University
- Cairo
- Egypt
- Department of Chemistry
| | - Razium Ali Soomro
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro
- Pakistan
| | - Sirajuddin Sirajuddin
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro
- Pakistan
| | | | - Muhammad Ishaq Abro
- Department of Metallurgy and Materials Engineering
- Mehran University of Engineering & Technology
- Jamshoro 76080
- Pakistan
| | - Magnus Willander
- Department of Science and Technology
- Campus Norrkoping
- Linkoping University
- SE-60174 Norrkoping
- Sweden
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15
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Song Y, Li X, Sun L, Wang L. Metal/metal oxide nanostructures derived from metal–organic frameworks. RSC Adv 2015. [DOI: 10.1039/c4ra12273a] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
MOFs-derived micro/nanostructures have important potential applications. In this review, we describe the use of MOFs as templates in the synthesis of metal/metal oxide micro/nanostructures and composite materials. The applications of the derived materials are also reviewed.
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Affiliation(s)
- Yonghai Song
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Xia Li
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
| | - Lanlan Sun
- State Key Laboratory of Luminescence and Applications
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun 130033
| | - Li Wang
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
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16
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Wang X, Wang G, Zhai G, Wang H. Nickel Oxide Nanoparticle-Assembled Microspheres with a High Rate Capability for Lithium Storage. Aust J Chem 2015. [DOI: 10.1071/ch14418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This paper presents the massive preparation of nickel oxide nanoparticle-assembled mesoporous microspheres using acid-treated carbon microspheres as sacrificial templates. The microstructure and morphology of the hollow NiO microspheres are characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption–desorption methods. Scanning electron microscopy and transmission electron microscopy images reveal that these hollow spheres are assembled by NiO particles with sizes of ~20 nm. The nickel oxide nanoparticle-assembled mesoporous microspheres feature high surface area and good electronic conductivity, leading to high capacity and excellent cycling performance as anode materials for lithium-ion batteries.
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17
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Liang J, Yu XY, Zhou H, Wu HB, Ding S, Lou XWD. Bowl-like SnO2@Carbon Hollow Particles as an Advanced Anode Material for Lithium-Ion Batteries. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407917] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Liang J, Yu XY, Zhou H, Wu HB, Ding S, Lou XWD. Bowl-like SnO2@Carbon Hollow Particles as an Advanced Anode Material for Lithium-Ion Batteries. Angew Chem Int Ed Engl 2014; 53:12803-7. [DOI: 10.1002/anie.201407917] [Citation(s) in RCA: 432] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Indexed: 11/10/2022]
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19
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Zheng F, Zhu D, Chen Q. Facile fabrication of porous Ni(x)Co(3-x)O4 nanosheets with enhanced electrochemical performance as anode materials for Li-ion batteries. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9256-9264. [PMID: 24853470 DOI: 10.1021/am501512j] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein, we report a novel and facile route for the large-scale fabrication of 2D porous NixCo3-xO4 nanosheets, which involves the thermal decomposition of NixCo1-x hydroxide precursor at 450 °C in air for 2 h. The as-prepared 2D porous NixCo3-xO4 nanosheets exhibit an enhanced lithium storage capacity and excellent cycling stability (1330 mA h g(-1) at a current density of 100 mA g(-1) after 50 cycles). More importantly, it can render reversible capacity of 844 mA h g(-1), even at a high current density of 500 mA g(-1) after 200 cycles, indicating its potential applications for high power LIBs. Compared to pure Co3O4, the reduction of Co in NixCo3-xO4 is of more significance because of the high cost and toxicity of Co. The improved electrochemical performance is attributed to the 2D structure and large amounts of mesopores within the nanosheets, which can effectively improve structural stability, reduce the diffusion length for lithium ions and electrons, and buffer volume expansion during the Li(+) insertion/extraction processes.
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Affiliation(s)
- Fangcai Zheng
- Hefei National Laboratory for Physical Science at Microscale, Department of Materials Science & Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China , Hefei 230026, China
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