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Abstrak :

Teknik Neutron Scattering merupakan salah satu teknik yang berperan sangat penting terhadap perkembangannya teknologi baterai lithium-ion, yang dimana teknik ini digunakan untuk menginvestigasi kemampuan penyimpanan energi pada baterai lithium-ion. Pada prinsipnya neutron scattering memanfaatkan neutron yang mampu mendeteksi unsur-unsur yang sangat ringan dan menjadikan suatu kelebihan yang sangat penting pada teknik.neutron scattering. Mengingat pentingnya material penyimpanan energi seperti lithium-ion yang digunakan pada perangkat elektronik sehari-hari maka semakin besar tuntutan untuk membuat dan menemukan material baterai litihum-ion semakin berkembang pada life time, kemampuan cyclic dan stabilitasnya. Penelitian ini dilakukan untuk mempelajari cara penggunaan dan pemanfaatan teknik neutron beam scattering dalam mengidentifikasi struktur crystal dari sampel yang digunakan yaitu anoda ZnO, dengan menggunakan high resollution power diffraction (HPRD) di Badan Tenaga Nuklir Nasional (BATAN). Hasil yang didapat pada posisi 2 theta pada titik 114,32 derajat didapat grid parameter 2,899 yang dimana apabila dibulatkan sangat mendekati grid parameter unsur besi (Fe) yang bernilai 2,866 Angstorm. Namun belum terlihat unsur lain selain besi dikarenakan besarnya intensitas casing besi dari sample coin cell baterai.

 

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Neutron Scattering technique is one technique that plays a very important role in the development of lithium-ion battery technology, which is used to investigate the energy storage capabilities of lithium-ion batteries. In principle, neutron scattering utilizes neutrons which are capable of detecting very light elements and making a very important advantage in techniques. Neutron scattering. Considering the importance of energy storage materials such as lithium-ion used in everyday electronic devices, the greater the demand to make and find battery-litihum-ion materials increasingly develops on life time, cyclic ability and stability. This research was conducted to study how to use and use the neutron scattering technique in identifying the crystal structure of the sample used, namely ZnO anode, using high resistance power diffraction (HPRD) at BadaN National Nuclear Power (BATAN).

 

Abstrak :
The National Nuclear Energy Agency of Indonesia (BATAN) has one dedicated spectrometer for inelastic neutron scattering experiments. The instrument is a thermal neutron triple-axis spectrometer known as SN1. SN1 was installed in 1992 in the experimental hall of G. A. Siwabessy Research Reactor, Serpong, Banten. Malfunctions of the hardware and software have prevented the instrument from performing inelastic scattering measurements since 1996. The 2011-2015 five years project has been initiated to revitalize and optimize the SN1. The project serves as a preparation for the utilization of SN1 for the investigation of lattice dynamics, spin wave and magnetic excitations in condensed matters that will be started in 2016. In 2013, SN1 has successfully been repaired and was able to measure phonon dispersion relation of available single crystals, i.e., Cu, pyrolytic graphite (PG), Ge, and Al. In 2015, the first experiment on magnetic excitation to investigate magnon dispersion relation of a known Fe single crystal has been carried out. Standard methods of inelastic scattering measurements, i.e., a constant-energy transfer hω with either fixed final neutron energy Ef = 14.7 meV or fixed incoming neutron energy Ei = 30.59 meV, and a constant momentum transfer Q with fixed incoming neutron energy Ei = 30.59 meV, were applied to measure the low-energy magnetic excitations. For fixed Ef measurement, a 5-cm thick PG filter was set between the sample and the analyzer to eliminate λ/n harmonics. To limit the energy and momentum spreads of the beam, collimations of 40 minutes were applied before and after the sample. The spin waves were measured along the three principal symmetry directions of [00ζ], [ζζ0], and [ζζζ]. The measured magnons were compared to values in reference and were found to be in a good agreement with them. With such accomplishments, we are convinced that SN1 is now ready for its inelastic scattering application and will become one of BATAN’s neutron instrument which is routinely utilized for materials characterization on lattice dynamics and magnetic excitations by local and foreign scientists. Besides reporting the SN1 first measured magnon, the current status of SN1 instrument development will also be presented briefly.