Anhydrous proton conductor based on composites of PEO and ATMP

Sun, Baoying; Qiu, Xinping; Zhu, Wentao

doi:10.1016/j.electacta.2011.01.084

Cited by 8 publications

(6 citation statements)

References 16 publications

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“…-H 2 PO 4 -or H ? -HPO 4 2-, second being that, as ATMP molecule was protonated by di-ammonium hydrogen phosphate doped in carbon powder, more ATMP molecules participated into the proton conduction gateway [17]. Advantage of using NDCP is evident from the CE difference obtained in MFC-3 and MFC-4.…”

Section: Wastewater Treatment and Coulombic Efficiencymentioning

confidence: 66%

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Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Kumar

Chatterjee

Ghangrekar

2017

Mater Renew Sustain Energy

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Long term stable performance of a microbial fuel cell (MFC) is difficult to achieve because of scale formation on cathode. Nitrogen doped carbon powder (NDCP) was used as cathode along with amino-trimethylene-phosphate (ATMP) as an anti-scaling agent in a MFC. Maximum power density of 66 mW/m 2 obtained in the MFC using NDCP as cathode, was 2.2 times higher than that obtained with simple carbon powder. High electroactive surface area and meso-porous structure of the NDCP improved electrochemical performance of the MFC having NDCP cathode. After 40 days of operation, the maximum power density decreased by only 12.5% in the MFC using NDCP and having ATMP in its cathode as compared to a 55.6% decrease in the MFC using only carbon powder in cathode due to fouling. Ultrathin shell structure of NDCP catalyst molecules, as evident from transmission electron microscopy (TEM) images, ensured high catalyst performance providing good electron transfer for enhancing oxygen reduction reaction (ORR). Less deposition of calcite molecules on cathode surface, illustrated via X-ray diffraction (XRD) after 40 days of operation, clearly reveals high anti-fouling property of ATMP as a cathode material. ATMP being a commercial antiscaling agent has inherent chelation properties to stop chemical fouling and thus helped in demonstrating stable long term performance of cathode in the MFCs. NDCP along with ATMP could be used for fabrication of a cost effective fouling resistant cathode for long term use by increasing ORR in MFCs to achieve stable power generation by minimizing scale formation on cathode and effective wastewater treatment simultaneously. Graphical abstract

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Section: Wastewater Treatment and Coulombic Efficiencymentioning

confidence: 66%

“…The procedure used for nitrogen doping also activated the carbon powder and increased active surface area for ORR. The increased CE in MFC-4 than MFC-3 and MFC-2 than MFC-1, highlights the importance of chemical activation due to nitrogen doping and increase in active surface area for ORR [17].…”

Section: Wastewater Treatment and Coulombic Efficiencymentioning

confidence: 99%

Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Kumar

Chatterjee

Ghangrekar

2017

Mater Renew Sustain Energy

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“…Figure depicts the equivalent circuit for the impedance spectra. As is shown in Figure , the R1 represents the system resistance, R2 represents the membrane resistance, and R3 is due to the instrument limitations in observing the low‐frequency electrode polarization region …”

Section: Resultsmentioning

confidence: 99%

Phosphonic acid functionalized siloxane crosslinked with 3‐glycidoxyproyltrimethoxysilane grafted polybenzimidazole high temperature proton exchange membranes

Qian

Shen

Gao

et al. 2017

J of Applied Polymer Sci

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Phosphonic acid functionalized siloxane crosslinked with 3‐glycidoxypropyltrimethoxysilane (GPTMS) grafted polybenzimidazole (PBI) membranes are prepared by sol–gel process. The structure of the membranes is characterized by Fourier‐transform infrared spectroscopy and X‐ray diffraction spectroscopy. SEM images of the membranes show that the membranes are homogeneous and compact. The crosslinked membranes exhibit excellent thermal stability, chemical stability and mechanical property. The proton conductivity of the crosslinked membranes increases by an order of magnitude over range of 20 °C to 160 °C under anhydrous condition, which can reach 3.15 × 10−2 S cm−1 at 160 °C under anhydrous condition. The activation energy of proton conductivity for membranes decreases with increase of PBI, because the formation of hydrogen bond network between the phosphonic acid and the imidazole ring can enhance the continuity of hydrogen bond in the membrane. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44818.

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“…The third weight loss region starting at 325uC with a broad exothermic peak is mainly due to the degradation of APTES chains. [29][30][31] Figs. 5 and 7 show the TG-DSC and DTG thermographs of the CS/APTES/ATMP membrane.…”

Section: Thermal Stability Of Membranesmentioning

confidence: 98%

Synthesis and characterisation of chitosan–nitrogen polyphosphonic acid poly(organosiloxane) high temperature proton exchange membranes for fuel cells

Yin

Gao

Shen

et al. 2016

Materials Technology

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One kind of acid-base high temperature proton exchange membrane was synthesised from chitosan (CS), 3-aminopropyltriethoxysilane (APTES) and amino trimethylene phosphonic acid (ATMP) by sol-gel process. In order to prevent phosphonic acid from leaching out, ATMP was introduced as proton conductor as well as cross-linker. Fourier transform infrared suggests that the SiZOC 2 H 5 in APTES appears as a hydrolysis-polycondensation yielding SiZOZSi network, and the introduction of ATMP leads to the protonation of the amino group. These membranes are thermally stable up to ,1808C and show excellent oxidative stability. In addition, the proton conductivity of CS/APTES/ATMP membranes increases with increasing temperature, reaching the value of 0?0578 S cm 21 at 1408C under normally anhydrous condition, which indicates that the acid-base pair and hydrogen bond network in CS/APTES/ATMP membranes are favourable to proton transfer.

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Anhydrous proton conductor based on composites of PEO and ATMP

Cited by 8 publications

References 16 publications

Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Fouling resistant nitrogen doped carbon powder with amino-tri-methylene-phosphate cathode for microbial fuel cell

Phosphonic acid functionalized siloxane crosslinked with 3‐glycidoxyproyltrimethoxysilane grafted polybenzimidazole high temperature proton exchange membranes

Synthesis and characterisation of chitosan–nitrogen polyphosphonic acid poly(organosiloxane) high temperature proton exchange membranes for fuel cells

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