电化学自组装Fe/Cu纳米复合材料对铁镍电池高倍率及低温性能改性(英文)
发布时间:2021-06-07 03:00
通过在碱液中阴极还原铁酸铜(t-CuFe2O4)简便地实现了纳米Fe/Cu复合材料的自组装。采用循环伏安(CV)与X射线衍射(XRD)分析了自组装过程中的相变。通过透射电镜(TEM)、选区电子衍射(SAED)以及扫描透射-能谱分析(STEM-EDX)的表征可以发现电结晶得到的铁、铜纳米颗粒分布均匀且接触紧密。当用于铁镍电池负极时,Fe/Cu纳米复合电极展现了较好的放电容量与充电接收能力,并具备优异的高倍率与低温性能。当电流密度高达4 500 m A·gFe-1或运行温度仅为-40℃时,该电极仍拥有很好的输出容量与电位特性。线性扫描伏安(LSV)分析证明了该电极中原位生成的Cu纳米颗粒催化了活性Fe的阳极溶解动力学性能,因而明显改善了电极的高倍率与低温放电性能。
【文章来源】:无机化学学报. 2017,33(05)北大核心SCICSCD
【文章页数】:8 页
【文章目录】:
1 Experimental
1.1 Syntheses of t-Cu Fe2O4
1.2 Self-assembly and characterization of Fe/Cu nano-composite electrode
1.3 Electrochemical measurements of Fe/Cu nano-composite electrode
2 Results and discussion
2.1 Self-assembly of Fe/Cu nanocomposite electrode from t-Cu Fe2O4
2.2 Electrochemical performances of Fe/Cu nano-composite electrode
2.3 Anodic kinetics of Fe/Cu nano-composite electrode
3 Conclusions
本文编号:3215712
【文章来源】:无机化学学报. 2017,33(05)北大核心SCICSCD
【文章页数】:8 页
【文章目录】:
1 Experimental
1.1 Syntheses of t-Cu Fe2O4
1.2 Self-assembly and characterization of Fe/Cu nano-composite electrode
1.3 Electrochemical measurements of Fe/Cu nano-composite electrode
2 Results and discussion
2.1 Self-assembly of Fe/Cu nanocomposite electrode from t-Cu Fe2O4
2.2 Electrochemical performances of Fe/Cu nano-composite electrode
2.3 Anodic kinetics of Fe/Cu nano-composite electrode
3 Conclusions
本文编号:3215712
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