Highly tuneable proton-conducting coordination polymers derived from a sulfonate-based ligand,CrystEngComm

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Highly tuneable proton-conducting coordination polymers derived from a sulfonate-based ligand
CrystEngComm ( IF 2.6 ) Pub Date : 2017-11-06 00:00:00 , DOI: 10.1039/c7ce01589e
Mei-Jie Wei _{1,

2,

3,

4,

5} , Jia-Qi Fu _{1,

2,

3,

4,

5} , Yi-Di Wang _{1,

2,

3,

4,

5} , Yi Zhang _{1,

2,

3,

4,

5} , Hong-Ying Zang _{1,

2,

3,

4,

5} , Kui-Zhan Shao _{1,

2,

3,

4,

5} , Yang-Guang Li _{1,

2,

3,

4,

5} , Zhong-Min Su _{1,

2,

3,

4,

5}

Affiliation

Developing a new type of high-performing proton-conducting electrolyte associated with proton exchange membrane fuel cells (PEMFCs) is one of the attractive and challenging topics in the modern energy field. Here, three coordination compounds have been synthesized via the HCl steaming-assisted conversion approach by using multiple functional groups including the sulfonate group and the Cl⁻ or HPO₄²⁻ group, namely, Cu₂H₂(Hspip)₂Cl₄·H₂O (1), Cu(H₂spip)Cl₂·H₂O (2) and CuH(Hspip)(HPO₄)·H₂O (3) (where H₂spip is 2-sulfophenylimidazo(4,5-f)(1,10)-phenanthroline). We disclose the relationship between the structure characteristics and the nature of proton conductivity. The protonated sulfonate group together with the halide Cl⁻ group plays a positive role in increasing proton conductivity; meanwhile, the packing mode of the structure is also an important factor influencing proton conduction. The compounds exhibit high proton conductivity values in the range of 10⁻⁴–10⁻² S cm⁻¹ at 95 °C and 97% relative humidity (RH), in which compound 2 exhibited the highest value of 1.09 × 10⁻² S cm⁻¹ at 97% RH and 368 K.

中文翻译：

源自磺酸盐配体的高度可调质子传导配位聚合物

开发与质子交换膜燃料电池（PEMFC）相关的新型高性能质子传导电解质是现代能源领域中有吸引力且具有挑战性的主题之一。这里，三种配位化合物已经合成经由盐酸蒸辅助转化方法通过使用多个官能团包括磺酸基团和氯^-或HPO ₄^2-基团，即，铜₂ ħ ₂（Hspip）₂氯₄ ·H ₂ O（1），Cu（H ₂ spip）Cl ₂ ·H ₂ O（2）和CuH（Hspip）（HPO）₄）·H₂ O（ 3）（其中H₂原子为2-磺基苯基咪唑并（4,5- f）（1,10）-菲咯啉）。我们公开了结构特征与质子传导性之间的关系。与卤化物CL中的质子化磺酸基一起^-组起到增大质子传导性的积极作用; 同时，结构的堆积方式也是影响质子传导的重要因素。这些化合物在95°C和97％相对湿度（RH）下的质子电导率值在10^-4 –10^-2 S cm^-1范围内，其中化合物2的最大值为1.09×10在97％RH和368 K下^-2 S cm^-1

更新日期：2017-11-14

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