Radiana, Rizeni (2024) Sintesis dan Karakterisasi NiCo-LDH Sebagai Elektrokatalis Untuk Oxygen Evolution Reaction (OER) Berbahan Dasar Limbah Baterai Lithium Ion (LIB). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baterai lithium-ion (LIB) adalah baterai sekunder yang dapat diisi ulang, yang terdiri dari anoda, katoda, lembaran tembaga, lembaran aluminium, serta separator. Penelitian ini menggunakan katoda baterai, larutan asam nitrat, dan hidrogen peroksida untuk sintesis leaching HNO3. Sintesis NiCo-LDH dan LiCoO2 dilakukan dengan variasi pH (9; 10; 11,8; 12,5; 13,3) dan Vulcan XC-72 sebagai pendukung elektrokatalis untuk reaksi evolusi oksigen (OER). Karakterisasi meliputi XRD, FE-SEM, TEM, BET, ICP-OES, dan FTIR, serta pengujian elektrokimia LSV, CV, EIS, Potentiodynamic, dan Galvanostatic. NiCo-LDH pada pH 9 dan 10 menunjukkan fasa stabil, morfologi spherical, struktur berlapis ganda hidroksida, luas permukaan 6,49 m²/g, dan konsentrasi unsur Ni dan Co tertinggi. LiCoO2 pada pH 11,8; 12,5; 13,3 menunjukkan morfologi heksagonal, struktur berlubang, luas permukaan 58,89 m²/g, dan konsentrasi unsur Co dan Li tertinggi, namun performanya sebagai elektrokatalis kurang optimal. NiCo-LDH pada pH 10 menjadi kandidat terbaik untuk elektrokatalis OER dengan overpotential 360 mV, nilai tafel 68 mV/dec, ECSA 0,084 mF/cm², dan Rct 3.739 Ω.cm².
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Lithium-ion batteries (LIB) are rechargeable secondary batteries consisting of an anode, cathode, copper foil, aluminum foil, and a separator. This research utilizes battery cathodes, nitric acid solution, and hydrogen peroxide for HNO3 leaching synthesis. The synthesis of NiCo-LDH and LiCoO2 was conducted with pH variations (9; 10; 11.8; 12.5; 13.3) and Vulcan XC-72 as a support for the electrocatalyst in oxygen evolution reactions (OER). Characterization techniques included XRD, FE-SEM, TEM, BET, ICP-OES, and FTIR, along with electrochemical testing such as LSV, CV, EIS, Potentiodynamic, and Galvanostatic. NiCo-LDH at pH 9 and 10 exhibited stable phases, spherical morphology, double-layer hydroxide structures, a surface area of 6.49 m²/g, and the highest concentrations of Ni and Co. LiCoO2 at pH 11.8, 12.5, and 13.3 showed hexagonal morphology, porous hexagonal structure, a surface area of 58.89 m²/g, and the highest concentrations of Co and Li, though its performance as an electrocatalyst was suboptimal. NiCo-LDH at pH 10 emerged as the best candidate for OER electrocatalysts with an overpotential of 360 mV, a Tafel value of 68 mV/dec, ECSA of 0.084 mF/cm², and Rct of 3.739 Ω.cm².
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Baterai Lithium Ion, Elektrokatalis, LiCoO2, NiCo-LDH, Oxygen Evolution Reaction (OER), Lithium Ion Battery, Electrocatalyst, LiCoO2, NiCo-LDH |
| Subjects: | Q Science > QD Chemistry > QD115 Electrochemical analysis Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis Q Science > QD Chemistry > QD569 Electrocatalysis. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Rizeni Radiana |
| Date Deposited: | 26 Aug 2024 02:47 |
| Last Modified: | 26 Aug 2024 02:47 |
| URI: | http://repository.its.ac.id/id/eprint/113387 |
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