Details

Autor(en) / Beteiligte

• Li, Xiao-Min
• Liu, Jiang
• Zhao, Chen
• Zhou, Jia-Lin
• Zhao, Ling
• Li, Shun-Li
• Lan, Ya-Qian

Titel

Strategic hierarchical improvement of superprotonic conductivity in a stable metal-organic framework system

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2019, Vol.7 (43), p.25165-25171

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Identification of proton-exchange membranes (PEMs) with high proton conductivity and long-term durability is highly important for the development of fuel cells. Herein, an efficient and feasible strategy that features different proton sources and hopping site modifications on the stable UiO-66-NH 2 framework for hierarchically improving the proton conductivity is demonstrated. As a result, IM-UiO-66-AS showed the highest superprotonic conductivity of 1.54 × 10 −1 S cm −1 (80 °C, 98% RH) and outstanding long-term durability of at least 100 h, which surpass those of all the reported proton-conducting MOF materials without guest loading. Furthermore, the manufactured membrane could maintain a high proton conductivity of 1.19 × 10 −2 S cm −1 even with continuous work for at least 40 h under the same conditions, suggesting its great potential for further application in devices. An efficient strategy to hierarchically improve the proton conductivity of MOFs by increasing the number of proton sources and hopping sites has been proposed.