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Cross-Linked SPEEK–PEG–APTEOS-Modified CaTiO3 Perovskites for Efficient Acid–Base Cation-Exchange Membrane Fuel Cell
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-07-30 , DOI: 10.1021/acs.energyfuels.0c01933 Raja Pugalenthi M 1 , Guozhong Cao 2 , Ramesh Prabhu Manimuthu 1
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-07-30 , DOI: 10.1021/acs.energyfuels.0c01933 Raja Pugalenthi M 1 , Guozhong Cao 2 , Ramesh Prabhu Manimuthu 1
Affiliation
Nanocomposite membranes are synthesized by the combination of sulfonated poly(ether ether ketone) (SPEEK), poly(ethylene glycol) (PEG), and 3-aminopropyl triethoxysilane (APTEOS)-modified CaTiO3. From thermogravimetric analysis (TGA) and mechanical and Arrhenius studies, it is seen that the covalent cross-linking of PEG with SPEEK exhibits a lower weight loss (91.84 wt %) at 120 °C than SPEEK (88.19 wt %). Moreover, higher activation energy (Ea) and tensile stress values are obtained in the order of 26.23 kJ/mol and 23.32 MPa, respectively. The APTEOS-modified CaTiO3 nanoparticles impregnated into the SPEEK/PEG membrane cause the acid–base proton hopping mechanism (HSO3/NH2) and induce a more compact structure. The nanocomposite membranes possess exceptional proton conductivity, thermal, oxidative, and physicochemical properties than SPEEK. Further, 6 wt % functionalized CaTiO3 in the SPEEK/PEG membrane manifests the highest values of proton conductivity, current density, and power density at 80 °C in 100% RH of 65.32 mS cm–1, 403 mA cm–2, and 90 mW cm–2 with an open-circuit voltage (OCV) of 0.90 V, respectively. This membrane retains 95.37 wt % original weight during 3 h of the Fenton test.
中文翻译:
交联的SPEEK–PEG–APTEOS改性的CaTiO 3钙钛矿,用于高效酸基阳离子交换膜燃料电池
纳米复合膜是通过磺化聚醚醚酮(SPEEK),聚乙二醇(PEG)和3-氨丙基三乙氧基硅烷(APTEOS)改性的CaTiO 3的组合而合成的。从热重分析(TGA)以及机械和Arrhenius研究中可以看出,与SPEEK(88.19 wt%)相比,PEG与SPEEK的共价交联在120°C下表现出更低的失重(91.84 wt%)。而且,分别以26.23kJ / mol和23.32MPa的量级获得较高的活化能(E a)和拉伸应力值。浸渍在SPEEK / PEG膜中的APTEOS修饰的CaTiO 3纳米颗粒引起酸碱质子跳跃机制(HSO 3 / NH 2),并产生更紧凑的结构。纳米复合膜比SPEEK具有优异的质子传导性,热,氧化和物理化学特性。此外,6%(重量)的官能化的CaTiO 3在磺化聚醚醚酮/ PEG膜舱单质子传导性,电流密度和功率密度的在80℃下在100%RH的65.32毫秒厘米的最高值-1,403毫安厘米-2,和90 mW cm -2的开路电压(OCV)分别为0.90V。在Fenton测试的3小时内,该膜保留了95.37 wt%的原始重量。
更新日期:2020-08-20
中文翻译:
交联的SPEEK–PEG–APTEOS改性的CaTiO 3钙钛矿,用于高效酸基阳离子交换膜燃料电池
纳米复合膜是通过磺化聚醚醚酮(SPEEK),聚乙二醇(PEG)和3-氨丙基三乙氧基硅烷(APTEOS)改性的CaTiO 3的组合而合成的。从热重分析(TGA)以及机械和Arrhenius研究中可以看出,与SPEEK(88.19 wt%)相比,PEG与SPEEK的共价交联在120°C下表现出更低的失重(91.84 wt%)。而且,分别以26.23kJ / mol和23.32MPa的量级获得较高的活化能(E a)和拉伸应力值。浸渍在SPEEK / PEG膜中的APTEOS修饰的CaTiO 3纳米颗粒引起酸碱质子跳跃机制(HSO 3 / NH 2),并产生更紧凑的结构。纳米复合膜比SPEEK具有优异的质子传导性,热,氧化和物理化学特性。此外,6%(重量)的官能化的CaTiO 3在磺化聚醚醚酮/ PEG膜舱单质子传导性,电流密度和功率密度的在80℃下在100%RH的65.32毫秒厘米的最高值-1,403毫安厘米-2,和90 mW cm -2的开路电压(OCV)分别为0.90V。在Fenton测试的3小时内,该膜保留了95.37 wt%的原始重量。