fa سنتز ترکیب LiFePO4/C به روش هم رسوبی و بررسی خواص ساختاری و الکترو‌‌شیمیایی آن سایر موارد Other fields پژوهشي Research <span style="font-size:10pt"><span style="text-justify:inter-ideograph"><span style="line-height:120%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">در این تحقیق در ابتدا </span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">تاثیر نوع مواد اولیه و پارامترهای اثرگذار بر فرآیند سنتز </span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">پودر </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">LiFePO₄</span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">(LFP)</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">،</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> به روش هم رسوبی</span></span></span> <span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">مورد بررسی قرار گرفت. پس از آن تاثیر افزودن پودر کربن و گلوکز </span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">به پودر </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%">LFP</span></span> <span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">به</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> روش های متفاوت </span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">به عنوان </span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">منبع کربن برای سنتز کامپوزیت </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">LiFePO₄/C</span></span></span> <span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">و تاثیر آنها بر خواص الکتروشیمیایی کامپوزیت حاصل بررسی شد. برای مشخصه یابی پودرهای سنتز شده </span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">از آنالیز </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%">XRD</span></span> <span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">و تصاویر </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">SEM</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> به ترتیب برای بررسی فازی و ریخت شناسی و تست های ولتامتری چرخه ای</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">،</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> ظرفیت باتری و امپدانس به منظور بررسی رفتار الکتروشیمیایی پودرها استفاده شد. </span></span></span>&nbsp;<span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">نتایج آنالیز </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">XRD</span></span></span> <span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">نشان داد از بین مواد اولیه مختلف برای تشکیل رسوبات <a name="_Hlk108550421">آهن دی فسفات و لیتیم فسفات،، </a>ماده لیتیم هیدروکسید و </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%">pH</span></span><span style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> حدود 10 مناسب است. </span></span></span>&nbsp;<span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">نتایج تصاویر </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">SEM</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> نشان داد که ذرات </span></span></span><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">LFP</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> دارای ریخت شناسی کروی و گل مانند است. </span></span></span><a name="_Hlk111202556"><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">نتایج آزمون های الکترو‌‌‌‌شیمیایی نشان دادند که افزودن درصد مناسبی از پودر کربن (10 درصد وزنی) به ماده </span></span></span></a><span dir="LTR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">LFP</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> خام باعث بهبود هدایت الکتریکی</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">،</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> افزایش برگشت‌‌ پذیری یون لیتیم</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:">، کاهش مقاومت انتقال بار بین کاتد و الکترولیت</span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:120%"><span b="" nazanin="" style="font-family:"> و همچنین افزایش ظرفیت باتری می شود.</span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:120%"><span style="font-family:"B Nazanin""></span></span></span></span></span></span></span></span></span><br> <br> &nbsp; <span style="font-size:10pt"><span style="text-justify:inter-ideograph"><span style="line-height:110%"><span style="font-family:Calibri,sans-serif"><span style="font-size:11.0pt"><span style="background:white"><span style="line-height:110%"><span new="" roman="" style="font-family:" times=""><span style="color:#444444">In this research, the effect of the type of raw materials and the influencing parameters on the synthesis process of LiFePO₄ (LFP) powder was initially investigated by the co-precipitation method. Then, the effect of adding carbon powder and glucose to LFP powder in different ways as a carbon source for the synthesis of LiFePO₄/C composite and their effect on the electrochemical properties of the resulting composite was investigated To characterize the synthesized powders, XRD analysis and SEM images were used to investigate the phase and morphology, respectively, and cyclic voltammetry, battery capacity, and impedance tests were used to investigate the electrochemical behavior of the powders</span></span></span></span></span></span></span></span></span><br> <span style="font-size:10pt"><span style="text-justify:inter-ideograph"><span style="line-height:110%"><span style="font-family:Calibri,sans-serif"><span style="font-size:11.0pt"><span style="background:white"><span style="line-height:110%"><span new="" roman="" style="font-family:" times=""><span style="color:#444444">The results of X-ray diffraction analysis showed that lithium hydroxide LiOH and pH of about 10 is suitable for the formation of iron diphosphate and lithium phosphate deposits. The results of SEM images showed that LFP particles have a spherical and flower-like morphology. The results of the electrochemical tests showed that adding a suitable percentage of carbon (10%wt) to the raw LFP material improves the electrical conductivity, increases the reversibility of lithium ions, reduces the charge transfer resistance between the cathode and the electrolyte, and also increases the battery capacity.</span></span></span></span></span></span></span></span></span> باتری لیتیم-یون, هم رسوبی, کاتد, LiFePO4 lithium-ion battery, Co-Precipitation, Cathode, LiFePO4 43 58 http://jicers.ir/browse.php?a_code=A-10-1815-1&slc_lang=fa&sid=1 Babak Hashemi بابک هاشمی hashemib@shirazu.ac.ir 10031947532846004048 10031947532846004048 Yes Shiraz University دانشگاه شیراز Shima Ostovar شیما استوار shima.ostovar72@gmail.com 10031947532846004049 10031947532846004049 No Shiraz University دانشگاه شیراز