partially unzipped multi-walled carbon nanotubes, oxygen electrode, electrocatalysis, electrode materials.

How to Cite

Danilov, M., Rusetskyi , I., Dovbeshko, G., Nikolenko, A., Fomanyuk, S., & Kolbasov , G. (2019). OBTAINING PARTIALLY UNZIPPED CARBON NANOTUBES FOR OXYGEN ELECTRODES. Ukrainian Chemistry Journal, 85(11), 41-51. https://doi.org/10.33609/0041-6045.85.11.2019.41-51


Various methods for unzipping carbon nanotubes are described, which differ only in the method of acting on multi-walled carbon nanotubes which leads to obtain a partial unzipped carbon nanotubes or the creation of a defective hybrid structure in carbon nanotubes.

By electrochemical anodic oxidation in 80 % sulfuric acid of multi-walled carbon nanotubes synthesized partially unzipped nanotubes and shows the results of the study. Using the methods of X-ray phase analysis, electron microscopy, and Raman spectra, it has been established that, as a result of electrochemical anodic oxidation, partially unzipped multi-walled carbon nanotubes are obtained. Two-layer oxygen electrodes were made, where synthesized materials were used as an active layer. Studies of the electrocatalytic characteristics of oxygen electrodes from partially unzipped multi-walled carbon nanotubes were carried out in a mock up of fuel cell with alkaline electrolyte. It is established that the degree of unzipping of multi-walled carbon nanotubes depends on the time of electrochemical oxidation. It has been suggested that it is possible to control the process of synthesis of partially unzipped nanotubes. It has been established that one of the methods for estimating the degree of unzipping of multi-walled carbon nanotubes can be studies the electrochemical characteristics of oxygen electrodes based on these materials.

Electrochemical investigation has established that the obtained samples of partially unzipped multi-walled carbon nanotubes are promising materials as catalysts carrier for oxygen electrodes of fuel cells. The developed method synthesis of partially unzipped multi-walled carbon nanotubes allows obtaining electrode materials for chemical current sources. Oxygen electrodes, based on such electrochemically produced materials, were stable for six months at a discharge current density of 200 mA/cm2. Partially unzipped multi-walled carbon nanotubes are promising catalyst carrier for electrodes of chemical current sources, as well as a material for hybrid nanocomposites with predetermined characteristics.



Danilov M.O., Slobodyanyuk I.A., Rusetskii I.A., Kolbasov G.Ya. Synthesis of Reduced Graphene Oxide Obtained from Multiwalled Carbon Nanotubes and Its Electrocatalytic Properties. In: Graphene Science Handbook: Fabrication Methods. Eds. M.Aliofkhazraei, N.Ali, W.I.Milne, C.S.Oz-kan, S.Mitura, J.L.Gervasoni. (London; New York: CRC Press / Taylor & Francis 2016).. P. 205.

Young R.J., Kinloch I.A., Gong L., Novoselov K.S. The mechanics of graphene nanocomposites: A review. Composites Sci-ence and Technology. 2012. 72: 1459.

Torres D., Pinilla J.L., Moliner R., Suelves I. On the oxidation degree of few-layer graphene oxide sheets obtained from chemi-cally oxidized multiwall carbon nanotubes. Сarbon. 2015. 8: 405.

Tang C., Guo W., Chen C. Structural and mechanical properties of partially unzipped carbon na-notubes. Physical Review B. 2011. 83: 075410-1.

Huang B., Son Y-W., Kim G., Duan W., Ihm J. Multiple localized states and magnetic or-derings in partially open zigzag carbon nano-tube superlattices: An ab initio study. J. Am. Chem. Soc. 2009. 131: 17919.

Hu H., Song Y., Feng M., Zhan H. Carbon nanomaterials for simultaneous determination of dopamine and uric acid in the presence of ascorbic acid: from one-dimensional to the quasi one-dimensional. Electrochimica Acta. 2016. 190: 40.

Tiwary C.S., Javvaji B., Kumar C., Mahapatra D.R., Ozden S., Ajayan P.M., Chattopadhyay K. Chemical-free graphene by unzipping car-bon nanotubes using cryomilling. Carbon. 2015. 89: 217.

Silva A.A., Pinheiro R.A., Rodrigues A.C., Bal-dan M.R., Trava-Airoldi V.J., Corat E.J. Graphe-ne sheets produced by carbon nanotubes unzip-ping and their performance as supercapacitor. Applied Surface Science. 2018. 446: 201.

Danilov M.O., Rusetskii I.A., Slobodyanyuk I.A., Dovbeshko G.I., Khyzhun O.Y., Strel-chuk V.V., Kolbasov G.Ya. A Facile Electro-chemical Method for Graphene Nanoplatelets Preparation Using Multi-walled Carbon Nanotubes. Fuel cells. 2019. 19(3): 202.

Long D., Li W., Qiao W., Miyawaki J., Yoon S.-H., Mochida I., Ling L. Partially unzipped carbon na-notubes as a superior catalyst sup-port for PEM fuel cells. Chemical Communications. 2011. 47: 429.

Chandran P., Ramaprabhu S. Catalytic per-formance of non-platinum-based hybrid car-bon hetero-structure for oxygen reduction and hydrogen oxidation reactions in proton exchange membrane fuel cell. Int. J. Hydro-gen Energy. 2018. 43(39): 18477.

Alim S., Vejayan J., Yusoff M.M., Kafi A.K.M. Recent uses of carbon nanotubes & gold nanoparticles in electrochemistry with application in biosensing: A review. Biosen-sors and Bioelectronics. 2018. 121: 125.

Chen S., Chen Q., Cai D., Zhan H. Defect-mediated synthesis of Pt nanoparticles uni-formly anchored on partially-unzipped car-bon nanofibers for electrochemical biosensing. Journal of Alloys and Com-pounds. 2017. 709: 304.

Xiao B., Li X., Li X., Wang B., Langford C., Li R., Sun X. Graphene Nanoribbons De-rived from the Unzipping of Carbon Nano-tubes: Controlled Synthesis and Superior Lithium Storage Performance. J. Phys. Chem. C. 2014. 118: 881.

Shende R.C., Ramaprabhu S. Thermo-optical pro-perties of partially unzipped multiwalled carbon nanotubes dispersed nanofluids for direct absorption solar ther-mal energy systems. Solar Energy Materials & Solar Cells. 2016. 157: 117.

Ferrari A.C., Robertson J. Interpretation of Raman spectra of disordered and amor-phous carbon. Physical Review B. 2000. 61: 14095.

Dovbeshko G., Fesenko O., Dementjev A., Karpicz R., Fedorov V., Posudievsky O.Yu. Coherent anti-Stokes Raman scatter-ing enhancement of thymine adsorbed on graphene oxide. Nanoscale Res. Lett. 2014. 9(1): 263.

Gerasimchuk A.I., Murafa N., Ogenko V.M., Shubrt I. Deformation and high-energy degradation of carbon nanotubes. Nanostrukturnoye materialovedeniye. 2009. 3: 47.


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