LiCoPO₄ cathode from a CoHPO₄·xH₂O nanoplate precursor for high voltage Li-ion batteries

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• 作者：Daiwon Choi ; ^{daiwon.choi@pnnl.gov" class="auth_mail" title="E-mail the corresponding author} ; Xiaolin Li ; Wesley A. Henderson ; Qian Huang ; Satish K. Nune ; John P. Lemmon ; Vincent L. Sprenkle
• 关键词：Materials science ; Nanomaterials ; Materials synthesis ; Materials chemistry ; Alternative energy technologies
• 刊名：Heliyon
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：2
• 期：2
• 全文大小：1392 K

文摘

A highly crystalline LiCoPO₄/C cathode material has been synthesized without noticeable impurities via a single step solid-state reaction using CoHPO₄·xH₂O nanoplate as a precursor obtained by a simple precipitation route. The LiCoPO₄/C cathode delivered a specific capacity of 125 mAhg⁻¹ at a charge/discharge rate of C/10. The nanoplate precursor and final LiCoPO₄/C cathode have been characterized using X-ray diffraction, thermogravimetric analysis − differential scanning calorimetry (TGA-DSC), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) and the electrochemical cycling stability has been investigated using different electrolytes, additives and separators.