Lityum-iyon Pillerin Aşırı Şarj ve Aşırı Deşarja Maruz Kalması Durumunda Empedans Tepkisinin Eşdeğer Devre Modellemesi
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Keywords:
Elektrokimyasal Empedans Spektroskopisi, Li-İyon Pili, Aşırı Şarj, Aşırı Deşarj, Eşdeğer Devre ModellemesiAbstract
Bu çalışma, ticari madeni tip lityum-iyon pillerin aşırı şarj ve aşırı deşarj koşullarında eşdeğer devre
modellemesi kullanılarak empedans spektroskopisi tepkisini araştırmaktadır. Pil hücreleri üzerinde yapılan
elektrokimyasal empedans testlerinde, aşırı şarj ve aşırı deşarj durumlarındaki değişimler empedans
spektroskopisi ile takip edilmiştir. Empedans verileri, normal çalışma sırasında belirgin kalıplar sergilemiş
ve bu durum anormal difüzyon empedans modelinin uygulanmasını gerektirmiştir. Model parametrelerinin
regresyon analizi, hücrelerin aşırı şarj ve aşırı deşarj öncesi ve sonrası elektrokimyasal performansına dair
değerli bilgiler sunmuştur.
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