@article{MTMT:34630527, title = {Mulberry-paper-based electrodes with hybrid nanocomposite coatings and their application to eco-friendly energy-storage devices}, url = {https://m2.mtmt.hu/api/publication/34630527}, author = {Han, Yurim and Ha, Heebo and Suryaprabha, Thirumalaisamy and Baumli, Péter and Hwang, Byungil}, doi = {10.1007/s10570-023-05701-y}, journal-iso = {CELLULOSE}, journal = {CELLULOSE}, volume = {31}, unique-id = {34630527}, issn = {0969-0239}, year = {2024}, eissn = {1572-882X}, pages = {1675-1685} } @article{MTMT:34566987, title = {Supercapacitors: An Efficient Way for Energy Storage Application}, url = {https://m2.mtmt.hu/api/publication/34566987}, author = {Czagány, Máté and Hompoth, Szabolcs and Keshri, Anup Kumar and Pandit, Niranjan and Galambos, Imre and Gácsi, Zoltán and Baumli, Péter}, doi = {10.3390/ma17030702}, journal-iso = {MATERIALS}, journal = {MATERIALS}, volume = {17}, unique-id = {34566987}, abstract = {To date, batteries are the most widely used energy storage devices, fulfilling the requirements of different industrial and consumer applications. However, the efficient use of renewable energy sources and the emergence of wearable electronics has created the need for new requirements such as high-speed energy delivery, faster charge–discharge speeds, longer lifetimes, and reusability. This leads to the need for supercapacitors, which can be a good complement to batteries. However, one of their drawbacks is their lower energy storage capability, which has triggered worldwide research efforts to increase their energy density. With the introduction of novel nanostructured materials, hierarchical pore structures, hybrid devices combining these materials, and unconventional electrolytes, significant developments have been reported in the literature. This paper reviews the short history of the evolution of supercapacitors and the fundamental aspects of supercapacitors, positioning them among other energy-storage systems. The main electrochemical measurement methods used to characterize their energy storage features are discussed with a focus on their specific characteristics and limitations. High importance is given to the integral components of the supercapacitor cell, particularly to the electrode materials and the different types of electrolytes that determine the performance of the supercapacitor device (e.g., storage capability, power output, cycling stability). Current directions in the development of electrode materials, including carbonaceous forms, transition metal-based compounds, conducting polymers, and novel materials are discussed. The synergy between the electrode material and the current collector is a key factor, as well as the fine-tuning of the electrode material and electrolyte.}, year = {2024}, eissn = {1996-1944} } @article{MTMT:34166678, title = {Wetting Transition of Liquid Tin on the Surfaces of Initially Oxidized Steels}, url = {https://m2.mtmt.hu/api/publication/34166678}, author = {Aldawoudi, K. and Varanasi, Dheeraj and Baumli, Péter and Kaptay, György}, doi = {10.1007/s12666-023-03077-y}, journal-iso = {T INDIAN I METALS}, journal = {TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS}, volume = {77}, unique-id = {34166678}, issn = {0972-2815}, abstract = {Experiments were carried out to investigate the wetting behaviour of liquid tin on two different steel substrates EN1.4301 stainless steel and 42CrMo4 low-alloyed steel. The experiments were carried out in a vacuum furnace at residual pressure (10 −8 bar) with the temperature raised till 1233 K (960 °C). The transition of the liquid tin droplet from a non-wetting to a wetting state was achieved on the surface of both steels after the spontaneous oxide removal. The transition temperatures in the Sn/EN1.4301 and Sn/42CrMo4 systems were nearly identical, 1140 K and 1130 K, respectively. SEM images showed the formation of the Fe–Sn intermetallic compounds at the Sn/steel interfaces above the transition temperature. Tin penetration into the grain boundaries of EN1.4301 and 42CrMo4 steels was also observed.}, year = {2024}, eissn = {0975-1645}, pages = {253-259}, orcid-numbers = {Kaptay, György/0000-0003-4419-142X} } @article{MTMT:34505389, title = {Cink-levegő akkumulátor töltési-kisütési karakterisztikájának vizsgálata}, url = {https://m2.mtmt.hu/api/publication/34505389}, author = {Kecsmár, Gergő and Baumli, Péter and Czagány, Máté and Dobó, Zsolt}, journal-iso = {MAGYAR ENERGETIKA}, journal = {MAGYAR ENERGETIKA}, volume = {XXX}, unique-id = {34505389}, issn = {1216-8599}, year = {2023}, pages = {11-20} } @misc{MTMT:34504519, title = {Bevonatok fejlesztése nagy hatékonyságú pszeudokondenzátorokhoz}, url = {https://m2.mtmt.hu/api/publication/34504519}, author = {Hompoth, Szabolcs and Czagány, Máté and Baumli, Péter}, unique-id = {34504519}, abstract = {Az energiafelhasználásunkat exponenciálisan növelő fejlődő technológia évről évre több energia mennyiséget igényel az eszközeink működtetéséhez. Bár hatékony elektromos energia előállítási módszereket fejlesztettünk ki, a tárolás terén további fejlesztésekre van szükségünk. Korábban az akkumulátorok ideális megoldást nyújtottak az energia tárolására, azonban most olyan funkciókra van szükségünk, mint például a gyorsabb töltés és kisütés sebessége, valamint az újrafelhasználhatóság, hogy lépést tudjunk tartani az eszközeink növekvő energiafogyasztásával és a modern elvárásokkal. Az újabb igényeket figyelembe véve megjelentek innovatív megoldások, például a fém-levegő cellás akkumulátorok és a szuperkondenzátorok. Kutatásom során a kémiai redukciós módszerrel előállított Ni-P ötvözetet használtam szuperkondenzátorok létrehozásához, majd ezek tulajdonságait elemeztem. Az aktív anyagot a szuperkondenzátor működése szempontjából szilárd hordozóra helyeztem. A kutatás során acél (AISI 1345) szilárd hordozót használtam, amelyre nikkel-foszfor (Ni-P) ötvözetet vittem fel, majd aktív szénnel kombináltam a szuperkondenzátor kialakításához. Az aktív szén előállításához természetes anyagok hulladékát használtam, mint például mogyoróhéj, kávézacc, dióhéj stb., amelyeket pirolízissel és kémiai aktiválással, KOH felhasználásával állítottam elő. Ezáltal nagy fajlagos felületet értem el, ami kiemelkedően fontos a szuperkondenzátorok készítésében. Az elkészült szuperkondenzátorokat potenciosztát segítségével vizsgáltam. A végzett vizsgálatok közé tartozott a ciklikus voltammetria és a galvanosztatikus töltéskisütés vizsgálat. Ezek alapján fontos paramétereket határoztam meg, mint például az energiasűrűség és a teljesítménysűrűség, amelyek mindkét esetben ígéretes eredményeket mutattak.}, year = {2023} } @article{MTMT:34443979, title = {The role of grain boundary interfaces and its effect to the intermetallic layer in hot dip galvanizing of steel sheets}, url = {https://m2.mtmt.hu/api/publication/34443979}, author = {Csaba, Nemeth and Baumli, Péter and Kaptay, György}, journal-iso = {Doktorandusz Almanach}, journal = {Doktorandusz Almanach}, volume = {1}, unique-id = {34443979}, issn = {2939-7294}, year = {2023}, pages = {228-234}, orcid-numbers = {Kaptay, György/0000-0003-4419-142X} } @article{MTMT:34180702, title = {A Review of Recent Progress in Fabrication Methods and Applications of Polydimethylsiloxane Sponge}, url = {https://m2.mtmt.hu/api/publication/34180702}, author = {Hong, Seungwoo and Kim, Haeji and Qaiser, Nadeem and Baumli, Péter and Hwang, Byungil}, doi = {10.1080/15440478.2023.2264497}, journal-iso = {J NAT FIBERS}, journal = {JOURNAL OF NATURAL FIBERS}, volume = {20}, unique-id = {34180702}, issn = {1544-0478}, year = {2023}, eissn = {1544-046X} } @article{MTMT:34054991, title = {Investigation of the Supercapacitive Behavior of Electroless Ni-B Coatings}, url = {https://m2.mtmt.hu/api/publication/34054991}, author = {Czagány, Máté and Hompoth, Szabolcs and Windisch, Márk and Baumli, Péter}, doi = {10.3390/met13071233}, journal-iso = {METALS-BASEL}, journal = {METALS}, volume = {13}, unique-id = {34054991}, abstract = {Amorphous electroless Ni-B coatings were deposited on steel substrates with different surface morphologies and B contents (6.5–8.64 wt.%) that could be changed by altering the temperature and the composition of the baths. The supercapacitive behavior of the coatings was evaluated by cyclic voltammetry and galvanostatic charge–discharge measurements, and it was found that Ni-B coatings had higher capacitance than pure electroless Ni or the bulk Ni plate. A close relationship was identified between the microstructure, the B content, and the capacitive behavior of the coatings. The presence of the B alloying element had the most significant effect in determining the capacitance, while the surface area and particle size also contributed to its increase. A surface-specific capacity of 31 mF/cm2 was achieved by the coating containing the highest B content and largest AFM surface area. Furthermore, it was revealed that the particle size of the deposits was determined by the combined effect of the bath temperature and the B content under the applied experimental conditions. The obtained results indicate that Ni-B coatings are promising candidates for supercapacitive applications.}, year = {2023}, eissn = {2075-4701}, orcid-numbers = {Windisch, Márk/0009-0004-3413-2471} } @article{MTMT:34054967, title = {Electrochemical behavior of GNP/CNT porous composite for supercapacitor}, url = {https://m2.mtmt.hu/api/publication/34054967}, author = {Pandit, Niranjan and Singh, Pushpender and Prasad, Suraj and Kumar Keshri, Anup and Czagány, Máté and Hompoth, Szabolcs and Gácsi, Zoltán and Baumli, Péter}, doi = {10.1016/j.cplett.2023.140695}, journal-iso = {CHEM PHYS LETT}, journal = {CHEMICAL PHYSICS LETTERS}, volume = {827}, unique-id = {34054967}, issn = {0009-2614}, year = {2023}, eissn = {1873-4448}, orcid-numbers = {Singh, Pushpender/0000-0002-1386-2289} } @CONFERENCE{MTMT:33333744, title = {PURE CAO AND FE2O3 DOPED CAO NANOPARTICLES CALCINED UNDER VACUUM: PREPARATIONS AND CHARACTERIZATIONS}, url = {https://m2.mtmt.hu/api/publication/33333744}, author = {Khine, Ei Ei and Baumli, Péter and Kristály, Ferenc and Kaptay, György}, booktitle = {INTERNATIONAL ASIAN CONGRESS ON CONTEMPORARY SCIENCES-VI May 27-29, 2022 Van-Türkiye FULL TEXTS BOOK}, unique-id = {33333744}, year = {2022}, pages = {138-141}, orcid-numbers = {Kristály, Ferenc/0000-0002-0075-5994; Kaptay, György/0000-0003-4419-142X} }