８７８
聚集，软包装电池不可避免的会发生胀气现象，这就会使原本
紧贴在一起的电极之间产生缝隙，从而增加了欧姆阻抗。
３ 结论
使用经碳包覆法得到的磷酸铁锂材料为正极活性物质、
MCMB
为负极活性物质的电池，其在倍率放电、高低温性能和
循环寿命等方面都表现优异，证明了磷酸铁锂材料可以在动
力电池领域发挥本领。所以，只要对电极、电池等加以科学合
理的设计和不断的改进，磷酸铁锂材料一定可以在动力电池
领域得到更广泛的应用。
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能的影响。结果表明，该催化剂 600 ℃活化后在活性炭表面负
载更加均匀，无结晶现象；当Fe (Ⅱ) 的载量为 6%时，TDM-
NPPFe(
Ⅱ)在活性碳表面达到单层负载。所以 600 ℃活化的
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Ⅱ)载量的催化剂(Cat
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与
E-Tek
公司的 Pt/C 30%做了比较，Cat
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的催化氧还原电子转
移数与 Pt/C 相近，即氧还原过程为 4 e 还原过程；耐甲醇测试
表明TDMNPPFe(Ⅱ)催化剂具有很好的耐甲醇性能。
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(
注：本文为第九届全国氢能学术会议论文)
(上接第 860 页)
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