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测试分析了糠醇树脂炭化产物组装的锂离子电池电化学性能。实验结果表明 ,5 5 0℃处理的糠醇树脂炭化样品充放电容量较低 ,还不能作为二次锂离子电池炭负极材料。 6 2 0℃～ 130 0℃范围内处理的糠醇树脂炭化样品组装的锂离子电池则都表现出了相对较高的充放电容量。其中 70 0℃炭化处理的样品组装的锂离子电池充放电容量最高。炭化处理温度对糠醇树脂制备的炭电极充放电容量不可逆性也有着较强的影响。随着炭化处理温度升高 ,炭电极充放电容量不可逆性在逐渐降低。 70 0℃和 130 0℃炭化处理的样品与 6 2 0℃炭化处理的样品相比不可逆性分别降低了约 5个和 19个百分点。实验结果还表明 ,树脂炭化产物的比表面积是影响电池充放电性能的重要因素 ,炭化产物的比表面积越大 ,电池的充放电容量就越高。
The electrochemical performance of lithium ion batteries assembled with carbonized products of furfuryl alcohol resin was analyzed. The experimental results show that the carbonized samples treated with 5-100 ℃ have a low charge-discharge capacity, which can not be used as negative electrode materials for lithium secondary battery. The lithium ion batteries assembled with carbonized samples of furfuryl alcohol resin treated at temperatures ranging from 20 ℃ to 130 ℃ all showed a relatively high charge and discharge capacity. Among them, the lithium-ion batteries assembled with samples carbonized at 70 ℃ have the highest charge-discharge capacity. The carbonization temperature has a strong influence on the charge-discharge capacity irreversibility of the carbon electrode prepared from furfuryl alcohol resin. With the increase of carbonization temperature, the irreversibility of carbon electrode charge and discharge capacity is gradually reduced. The samples irreversibly reduced by about 5 and 19 percentage points, respectively, compared with samples carbonized at 620 ℃. The experimental results also show that the specific surface area of the carbonized product is an important factor affecting the charge-discharge performance of the battery. The larger the specific surface area of the carbonized product is, the higher the charge-discharge capacity of the battery is.