(0.8-x)SnxIr0.2O2三元氧化物電極材料。通過(guò)掃描電子顯微鏡,X 射線衍射、循環(huán)伏安和交流阻抗譜等分析了Ti/Mn(0.8-x)SnxIr0.2O2電極材料的組織結(jié)構(gòu)和電容性能。結(jié)果表明：SnO2對(duì)涂層的組織結(jié)構(gòu)有較大影響,隨SnO2含量增加,氧化物涂層中正方結(jié)構(gòu)Mn3O4相逐漸減少,正方結(jié)構(gòu)SnO2相逐漸增加。與錳銥二元氧化物相比,SnO2的加入可明顯改善電極材料在0~0.5V區(qū)間的電流響應(yīng),并促進(jìn)氧化錳活性的發(fā)揮,但在一定程度上也抑制了氧化銥的活性。SnO2的加入也改變了電極材料的電荷轉(zhuǎn)移電阻、弛豫時(shí)間常數(shù)、以及不同頻率下的電容響應(yīng)速度。相比其它電極材料,Ti/Ir0.2Mn0.6Sn0.2O2電極材料在低頻范圍(≤ 1Hz)有更好的電容響應(yīng)和更高的活性,因而獲得最高的比電容值。"/>

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Ti/Mn(0.8-x)SnxIr0.2O2電極的電容性能研究
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福州大學(xué)材料科學(xué)與工程學(xué)院,福州大學(xué)材料科學(xué)與工程學(xué)院,福州大學(xué)材料科學(xué)與工程學(xué)院,廈門(mén)理工學(xué)院材料科學(xué)與工程學(xué)院,福州大學(xué)材料科學(xué)與工程學(xué)院

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國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)11374053)S福建省自然科學(xué)基金資助 (項(xiàng)目號(hào)2015J01190)


Analysis of Capacitive Properties of Ti/Mn(0.8-x)SnxIr0.2O2 Electrodes
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College of Materials Science and Engineering,Fuzhou University,College of Materials Science and Engineering,Fuzhou University,College of Materials Science and Engineering,Fuzhou University,College of Materials Science and Engineering,Xiamen University of Technology,College of Materials Science and Engineering,Fuzhou University

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    摘要:

    采用熱分解法制備了Ti/Mn(0.8-x)SnxIr0.2O2三元氧化物電極材料。通過(guò)掃描電子顯微鏡,X 射線衍射、循環(huán)伏安和交流阻抗譜等分析了Ti/Mn(0.8-x)SnxIr0.2O2電極材料的組織結(jié)構(gòu)和電容性能。結(jié)果表明：SnO2對(duì)涂層的組織結(jié)構(gòu)有較大影響,隨SnO2含量增加,氧化物涂層中正方結(jié)構(gòu)Mn3O4相逐漸減少,正方結(jié)構(gòu)SnO2相逐漸增加。與錳銥二元氧化物相比,SnO2的加入可明顯改善電極材料在0~0.5V區(qū)間的電流響應(yīng),并促進(jìn)氧化錳活性的發(fā)揮,但在一定程度上也抑制了氧化銥的活性。SnO2的加入也改變了電極材料的電荷轉(zhuǎn)移電阻、弛豫時(shí)間常數(shù)、以及不同頻率下的電容響應(yīng)速度。相比其它電極材料,Ti/Ir0.2Mn0.6Sn0.2O2電極材料在低頻范圍(≤ 1Hz)有更好的電容響應(yīng)和更高的活性,因而獲得最高的比電容值。

    Abstract:

    An experimental set-up was designed for measuring the self-field losses of Bi2223/Ag HTS tapes using a transport current method. Ti/Mn(0.8-x)SnxIr0.2O2 ternary oxide electrode materials were obtained by Pechini sol-gel method. The organizational structure and electrochemical performance of Ti/Mn(0.8-x)SnxIr0.2O2 electrodeswas investigated by Scanning electron microscope (SEM), X ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results showed that: SnO2 has a great influence on the organization structure of coating. With the content of SnO2 increasing, affirmative structure of Mn3O4 phase in Ti/Mn (0.8-x) SnxIr0.2O2 electrodes oxide coating is gradually reduced, but affirmative structure of SnO2 phase increased. Compared with the Mn-Ir-based binary oxides, the addition of SnO2 can significantly improve the current response of electrodes in the range of 0~0.5V and enhance activity of manganese oxide, but suppress activity of iridium oxide. Impedance analysis indicated that the charge transfer resistance,the relaxation time constant and the capacity of different frequency response of electrode materials were changed after addition of SnO2. In contrast, the Ti/Ir0.2Mn0.6Sn0.2O2 electrode with better capacitance response and higher activity in the low frequency range (≤ 1Hz), demonstrates the highest specific capacitance.

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伊昭宇,陳志杰,邵艷群,朱君秋,唐電. Ti/Mn(0.8-x)SnxIr0.2O2電極的電容性能研究[J].稀有金屬材料與工程,2018,47(2):546~552.[YI Zhaoyu, Cheng Zhijie, SHAO Yanqun, ZHU Junqiu, TANG Dian. Analysis of Capacitive Properties of Ti/Mn(0.8-x)SnxIr0.2O2 Electrodes[J]. Rare Metal Materials and Engineering,2018,47(2):546~552.]
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  • 收稿日期:2015-12-03
  • 最后修改日期:2016-04-27
  • 錄用日期:2016-05-18
  • 在線發(fā)布日期: 2018-03-15
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