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ITS » Undergraduate Theses » Teknik Material
Posted by tondoindra@gmail.com at 29/10/2015 13:33:39  •  884 Views


PENGARUH KONSENTRASI POLIVINIL ALKOHOL PVA TERHADAP PERFORMA ELEKTROKIMIA LITI2PO43 HASIL PROSES SOL-GEL SEBAGAI ANODA UNTUK BATERAI ION LITHIUM TIPE AQUEOUS ELEKTROLIT

THE EFFECTS OF POLIVINYL ALCOHOL PVA CONCENTRATION ON ELECTROCHEMICAL PERFORMANCE LiTi2PO43 BY SOL-GEL PROCESS AS ANODE FOR LITHIUM ION BATTERY TYPE AQUEOUS ELECTROLYTE

Author :
AZMY, ILHAM ( 2710100067 )




ABSTRAK

Penelitian tentang baterai ion lithium sebagai sistem penyimpanan energi berkembang begitu pesat. Pada baterai ion lithium salah satu bagian utama adalah anoda yang terdiri atas material LiTi2PO43. Maka penelitian ini bertujuan untuk mengetahui pengaruh konsentarsi polivinil alkohol PVA terhadap performa elektrokimia LiTi2PO43 sebagai anoda baterai ion lithium. Proses sintesis material LiTi2PO43 dilakukan dengan proses sol-gel menggunakan Li2CO3 TiO2 NH4H2PO4 dan variasi penambahan konsentrasi 5 wt 10 wt 15 wt polivinil alkohol PVA. Pada pengujian XRD dari ketiga sampel teridentifikasi LiTi2PO43 sesuai dengan JCPDS 35-074 meskipun masih ada fasa lain dalam intensitas yang kecil. Pengujian SEM menunjukkan bahwa material LiTi2PO43 5wt. PVA memiliki ukuran partikel yang lebih kecil dibandingkan dengan lainnya. Namun demikian ukuran partikel tidak merata dan masih ada sedikit aglomerasi karena proses kalsinasi pada temperatur tinggi. Pengujian performa elektrokimia Cyclic Voltammetry CV menunjukkan bahwa anoda LiTi2PO43 5wt. PVA menunjukkan nilai kinetik ion yang tinggi karena pada anoda tersebut memiliki ukuran partikel yang paling kecil dibandingkan yang lainnya sehingga meningkatkan difusivitas ion Li. Adapun pengujian Galvanostat Charge- Discharge menunjukkan bahwa anoda LiTi2PO43 5wt. PVA memiliki stabilitas yang lebih baik karena pada anoda LiTi2PO43 5wt. PVA memiliki sebaran ukuran partikel yang lebih kecil sehingga transfer ion saat proses interkalaside-interkalasi dapat berlangsung secara stabil.


ABSTRACT

The development of research on lithium ion battery as energy storage system is very rapidly. In lithium ion battery one of the main part composed as anode by the material LiTi2PO43. So this research aimed to determine the effect of the concentration of polyvinyl alcohol PVA on the electrochemical performance LiTi2PO43 as an anode of lithium ion battery. The synthesis process of LiTi2PO43 conducted by sol-gel process that using Li2CO3 TiO2 NH4H2PO4 and variations in concentrations of 5 wt 10 wt 15 wt polyvinyl alcohol PVA. In the XRD testing of three samples identified LiTi2PO43 according to JCPDF 35-074 although there is still other phase in a small intensity. The SEM test showed the material LiTi2PO43 5wt. PVA have particles size smaller than the other variations. However the particle size is not homogeny and there is still little agglomeration due to the calcination process at high temperature. The electrochemical performance test of Cyclic Voltammetry CV showed that anode LiTi2PO43 5wt. PVA showed high ion kinetic values because at the anode has the smallest particle size compared to the other increasing the Li ion diffusivity. The Charge-Discharge Galvanostat testing showed that the anode LiTi2PO43 5wt. PVA has better stability because the anode LiTi2PO43 5wt. PVA has a particle size distribution smaller so that the transfer of ions during the process of intercalationdeintercalation can take place in a stable.



Keywords(LiTi2(PO4)3, Polivinil Alkohol (PVA), Sol-gel, Performa Elektrokimia.
 
Subject:  Kimia Elektrik
Contributor
  1. Dr. Lukman Noerochim, S.T., M.Sc
Date Create: 29/10/2015
Type: Text
Format: PDF
Language: Indonesian
Identifier: ITS-Undergraduate-27001150007610
Collection ID: 27001150007610
Call Number: 621.312 423 Azm p


Source
Undergraduate Theses of Material And Metalurgy Engineering RSMt 620.112 2 Far p , 2015

Coverage
ITS Community

Rights
Copyright @2015 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-Undergraduate-39273-2710100067-Abstract_in.pdf - 224 KB
  2.  ITS-Undergraduate-39273-2710100067-Abstract_en.pdf - 225 KB
  3.  ITS-Undergraduate-39273-2710100067-Conclusion.pdf - 233 KB




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