Synergy of Black Phosphorus−Graphite−Polyaniline-Based Ternary Composites for Stable High Reversible Capacity Na-Ion Battery Anodes
學年 107
學期 2
出版（發表）日期 2019-04-15
作品名稱 Synergy of Black Phosphorus−Graphite−Polyaniline-Based Ternary Composites for Stable High Reversible Capacity Na-Ion Battery Anodes
作品名稱（其他語言）
著者 Hongchang Jin; Taiming Zhang; Chenghao Chuang; Ying-Rui Lu; Ting-Shan Chan; Zhenzhen Du; Hengxing Ji; Li-jun Wan
單位
出版者
著錄名稱、卷期、頁數 ACS Applied Materials and Interfaces 11, p.16656-16661
摘要 In recent times, few-layer black phosphorus (BP) has attracted tremendous attention as a promising anode material for sodium-ion batteries due to its particular two-dimensional structure, good electron conductivity, and high theoretical capacity. The main disadvantages of BP-based materials are the lower practical specific capacity of the BP-based composite than expectation because of the low P atom utilization and the structural fracture due to the large volume expansion that occurs during sodiation/desodiation cycles. In this work, we report a ternary composite comprising BP, graphite, and polyaniline (BP-G/PANI) with a BP mass content of ∼65 wt %. The ternary composite provides an optimized ion pathway (electrolyte → PANI → BP-G → BP), which reduces the charge transfer resistance of the electrode. Also, further ex situ X-ray absorption spectroscopy measurements demonstrate that the presence of graphite in the BP-G composite allows a deep sodiation of BP and also leads to a higher sodiation/desodiation reversibility. In addition, the uniformly coated PANI also restricts the huge volume expansion of the BP electrode through discharge/charge processes, which promise the stable cycling performance of BP-G/PANI. Thus, our composite shows a high reversible gravimetric capacity of 1530 mAh gcompo.–1 at 0.25 A g–1 and a capacity retention of 520 mAh gcompo.–1 after 1000 cycles at a high current density of 4 A g–1.
關鍵字 anode material;black phosphorus;phosphorus utilization;high reversible capacity;sodium-ion batteries
語言 en_US
ISSN 19448244
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120996 )