Abstract:
본 발명은 폴리페닐렌설파이드를 포함하는 다공성 지지체; 및 상기 지지체에 충진되고 음이온 교환 고분자를 포함하는 조성물로부터 제조된 음이온교환층;를 포함하는 음이온교환 복합막을 제조하고, 이를 알칼리 연료전지, 수전해, 레독스 흐름전지 등에 응용하는 기술에 관한 것이다. 본 발명에 따른 다공성 지지체를 포함하는 음이온교환 복합막은 기계적 물성, 치수안정성, 내구성, 화학적 안정성 및 장기안정성 등이 현저히 향상된다.
Abstract:
1가 음이온 선택성 이온 교환막 및 상기 이온 교환막의 제조방법이 개시된다. 상기 1가 음이온 선택성 이온 교환막은 표면부는 양이온 교환 고분자 전해질의 함량 비율이 높고, 중심부는 음이온 교환 고분자 전해질의 함량 비율이 높으며, 두께 방향으로 표면으로부터 중심으로 갈수록 양이온 교환 고분자 전해질에 대한 음이온 교환 고분자 전해질의 함량 비율이 연속적으로 증가하는 구조를 가짐으로써, 1가 음이온에 비하여 다가 음이온의 교환막 투과를 현저히 감소시켜 1가 음이온에 대하여 높은 선택성을 가질 수 있다.
Abstract:
The invention relates to a fuel cell (1), comprising at least the following components: a proton-conducting polymer membrane (2) as the electrolyte; catalyst layers (3) covering the polymer membrane (2) on both sides; gas-permeable electrodes in the form of an anode (4) and a cathode (5), which lie adjacent to the surface of the catalyst layers (3) that faces outwards; electroconductive plates (6), which come into electroconductive contact with the electrodes in at short distances and which together with the electrodes, delimit channels carrying gas; and gas connections for supplying hydrogen (H2) and for supplying oxygen (O2). The inventive fuel cell (1) is characterised in that the polymer membrane (2) is a mixture based on a polymer blend containing at least one first polymer group A which is based on a halogenated and/or sulphonated polyalkene, and one second polymer group B which is based on a vulcanised rubber with a polar character.
Abstract:
A composite film usable as a separator of an electrochemical device includes hBN nanosheets and at least one polymer. The hBN nanosheets are uniformly dispersed within a matrix of said least one polymer to achieve a highly porous microstructure. Said at least one polymer comprises one or more electrically insulating and electrochemically inert polymers.
Abstract:
The invention relates to a single or multi-layered plastic membrane doped with acid and comprising at least one layer A of a polymer mixture consisting of a) between 0.1 and 99.9 wt. % of at least one polymer comprising recurrent azole units of general formulae (1A) and/or (1B) - wherein radicals Ar, Ar and Ar represent tetravalent, divalent or trivalent aromatic or heteroaromatic groups, and radicals X, which are the same inside a recurrent unit, represent an oxygen atom, a sulphur atom, or an amino group having a hydrogen atom and a group comprising 1 to 20 carbon atoms, preferably a branched or unbranched alkyl or alkoxy group, or an aryl group as a further radical - mixed with b) between 99.9 and 0.1 wt. % of a polysulfone comprising no sulfonic acid groups but comprising recurrent units of general formulae (2A, 2B, 2C, 2D, 2E, 2F) and/or (2G) wherein radicals R, the same or different, independently represent 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, 4,4'-biphenylene, a divalent radical of a heteroaromatic compound, a divalent radical of a C10-aromatic compound and/or a divalent radical of a C14-aromatic compound. The invention also relates to a method for producing said doped plastic membrane, the use thereof in fuel cells, during electrolysis, in capacitors, in battery systems and in electrochromic applications, in addition to membrane electrode units comprising at least one inventive plastic membrane.
Abstract:
The invention relates to a sulfonated, aromatic polymer comprising the recurring structural unit of formula (I): -O-Ar (SO3R)n-C(CF3)2-Ar (SO3R)n-O-Ar -(X-Ar )m-, wherein Ar and Ar represent independently of each other bivalent aromatic or heteroaromatic substituted radicals that may contain one or several monovalent organic groups which are inert under actual operating conditions, R represents hydrogen, an alkaline or alkaline earth ion or an ammonium ion, n is a whole number from 0 to 3, m is 0, 1 or 2 and X represents a group -CO-, -O-, -CpH2p-, -CpF2p- or -S-, wherein p is a whole number from 1 to 10. These polymers can be processed into membranes with a high proton conductability. Preferably, said membranes are used in fuel cells.