Enhanced capacity and stability of K2FeO4 cathode with poly(3-hexylthiophene) coating for alkaline super-iron battery
Enhanced capacity and stability of K2FeO4 cathode with poly(3-hexylthiophene) coating for alkaline super-iron battery
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碱性超级铁电池用聚（3-己基噻吩）涂层增强 K2FeO4 正极的容量和稳定性
DOI：
10.1016/j.electacta.2016.06.164
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发表时间：
2016-09
影响因子：
6.6
通讯作者：
Li Hongbo
中科院分区：
文献类型：
--
作者：
Wang Suqin;Wang Yaoyao;Chen Shuiliang;Hou Haoqing;Li Hongbo
为了提高K2 FeO 4的容量和稳定性，制备了聚3-己基噻吩包覆K2 FeO 4（K2FeO4@P3HT）。采用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FT-IR）和X射线光电子能谱（XPS）对K2FeO4@P3HT进行表征。放电性能结果表明，聚（3-己基噻吩）（P3 HT）涂层提高了K2 FeO 4在10 mol L− 1 KOH电解液中的容量。K2FeO4@P3HT-1%电极显示出351 mAh g-1的高放电容量，与K2 FeO 4电极相比增加约13%。此外，P3 HT包覆显著提高了K2 FeO 4电极的稳定性，在电解液中储存6 h后，电极的放电容量提高到314 mAh g−1，比314 mAh g−1提高了22.6%。这是由于K_2FeO_4晶体表面原位形成了双层膜，阻止了电解液与K_2FeO_4的直接接触，降低了电荷转移的阻力。
Poly(3-hexylthiophene)-coated K2FeO4(K2FeO4@P3HT) was prepared to enhance capacity and stability of K2FeO4. Scanning electron microscopy (SEM), Fourier transform infrared spectrum (FT-IR) and X-ray photoelectron spectra (XPS) were performed to characterize K2FeO4@P3HT. Discharge performance results showed that the Poly(3-hexylthiophene) (P3HT) coating layer enhanced the capacity of the K2FeO4in 10 mol L−1KOH electrolyte. K2FeO4@P3HT-1% electrode showed a high discharge capacity of 351 mAh g−1, about 13% increase comparing to the K2FeO4electrode. Moreover, the stability of K2FeO4electrode was obviously enhanced by P3HT coating, and the discharge capacity of the electrode which was stored in electrolyte for 6 h was improved to 314 mAh g−1, increasing about 22.6% compared to that of 314 mAh g−1. These desirable properties can be attributed to the in-situ formation of two-layer film on the surface of K2FeO4crystal, which keep electrolyte from directly contacting with K2FeO4and reduce the resistance of charge transfer.
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影响因子：
4.5
作者：
Bing-chu Yang;Zhan-hong Yang;Suqin Wang;Hongyan Chen
通讯作者：
Bing-chu Yang;Zhan-hong Yang;Suqin Wang;Hongyan Chen
影响因子：
4.9
作者：
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通讯作者：
S. Licht;Xingwen Yu;D. Zheng
影响因子：
9.2
作者：
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通讯作者：
S. Licht;Vera Naschitz;Bing Liu;Susanta Ghosh;Nadezhda Halperin;Leonid Halperin;Dmitri Rozen
影响因子：
2.9
作者：
V. Lavaert;M. Moors;E. Wettinck
通讯作者：
V. Lavaert;M. Moors;E. Wettinck
影响因子：
3.9
作者：
Kenneth A. Walz;J. Szczech;Amy N. Suyama;Wendy E. Suyama;Lucas C. Stoiber;W. Zeltner;M. E. Armacanqui;M. Anderson
通讯作者：
Kenneth A. Walz;J. Szczech;Amy N. Suyama;Wendy E. Suyama;Lucas C. Stoiber;W. Zeltner;M. E. Armacanqui;M. Anderson