Elektro Kaplama Yöntemi ile Elde Edilen Kalay Anodunun Lityum İyon Pillerde Performansının İncelenmesi

Öz

Kalay (Sn), Li-ion piller için gelişmekte olan alternatif bir anot adayıdır. Bolca bulunması ve düşük maliyeti nedeniyle araştırmacılar, Li-ion piller (LIP) için yeni nesil bir anot alternatifi olarak Sn anot üzerinde çalışmaktadırlar. Bu çalışmada sulu ortamdan elde edilen elektrolizle kaplanmış Sn anodunu inceledik. Bakır akım toplayıcı üzerinde saf kalay anot sentezlemek için elektro kaplama yöntemini kullandık. Kalay tuzu, yüzey aktivatörü, yapıştırıcı ajan, tamponlama ve kompleks yapıcıdan oluşan sulu ortam, herhangi bir bağlayıcı ve iletken ajan kullanılmadan saf kalay elde etmek için kullanılmıştır. Biriktirme potansiyelleri ve bunların partikül morfolojisi ve kristal yapısı üzerindeki etkileri araştırıldı. Elektrokimyasal performansı arttırmak için kalay anodu iletken polimer kaplama ile kapladık ve ısıl işlemin polimer kaplı kalay anotlar üzerindeki etkisini inceledik. Elektro kaplama ile Sn elektrodun elektrokimyasal performansı ve fiziko kimyasal özellikleri, Taramalı elektron mikroskobu, X-ışını Kırınımı ve elektrokimyasal tekniklerle karakterize edildi. Kaplama potansiyelinin voltajı arttırıldıkça kalay parçacıklarının daha da büyüdüğü gözlemlenmiştir. X-ışını kırınımı sonuçlarında farklılık gözükmemiştir. -0.8V ve -0.9V kaplama voltaj değerleri ideal elektrokimyasal sonuçları vermiştir. Polimer kaplamanın ilk kapasite değerine olumlu etkisi olsa da döngü ömründe yeteri iyileştirme oluşturmadığı gözlemlenmiştir.

Anahtar Kelimeler

• Elektro kaplama
• Kalay anot
• Lityum İyon
• Anot Aktif Malzeme
• Elektrokimya

Proje Numarası

118C307

Understanding the Effect of Deposition Potential on the Electrodeposited Tin Anodes for Lithium-Ion Batteries

Öz

Tin (Sn) is an emerging anode candidate for Li-ion batteries. Due to its high availability and low cost, researchers are studying Sn anode as a next-generation anode alternative for Li-ion batteries (LIB). In this study, we have investigated the electroplated Sn anode obtained from the aqueous media. We have utilized the electrodeposition method for synthesizing pure tin anode on the copper current collector. Aqueous media comprised of tin salt, surface activator, adhesive agent, buffering, and the complexing agent was utilized for obtaining pure tin without using any binder and a conductive agent. Deposition potentials and their effect on the particle morphology and crystal structure were investigated. To enhance the electrochemical performance, we coated the tin anode with the conducting polymer coating and further analyzed the effect of the heat treatment on the polymer-coated tin anodes. The electrochemical performance and physicochemical properties of the electrodeposited Sn electrode were characterized by, Scanning electron microscopy, X-ray Diffraction, and electrochemical techniques. As the voltage of the coating potential increases, it has been observed that the tin particles further enlarge. No difference is observed in X-ray diffraction results for the tin electrodes obtained at different voltages. Coating voltage values of -0.8V and -0.9V have provided ideal electrochemical results. Although polymer coating has a positive effect on the initial capacity value, it has been observed that it does not have sufficient improvement in cycle life.

Anahtar Kelimeler

• Deposition of Tin
• Lithium Ion
• Anot Active Material
• Electrochemistry
• Tin Anode

Destekleyen Kurum

TÜBİTAK

Proje Numarası

118C307

Teşekkür

MNA is also indebted to TÜBİTAK for providing the grant of 2232-International Fellowship for Outstanding Researchers Programme (project no. 118C307).

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