Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices,Energy & Environmental Science

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Poly(carbazole)-based anion-conducting materials with high performance and durability for energy conversion devices
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-08-25 , DOI: 10.1039/d0ee01842b
Min Suc Cha _{1,

2,

3,

4} , Ji Eun Park _{4,

5,

6,

7,

8} , Sungjun Kim _{4,

5,

6,

7,

8} , Seung-Hui Han _{1,

2,

3,

4} , Sang-Hun Shin _{1,

2,

3,

4} , Seok Hwan Yang _{1,

2,

3,

4,

9} , Tae-Ho Kim _{1,

2,

3,

4} , Duk Man Yu _{1,

2,

3,

4} , Soonyong So _{1,

2,

3,

4} , Young Taik Hong _{1,

2,

3,

4} , Sang Jun Yoon _{1,

2,

3,

4} , Seong-Geun Oh _{4,

9,

10} , Sun Young Kang _{4,

5,

6,

7,

8} , Ok-Hee Kim _{4,

11,

12,

13} , Hyun S. Park _{4,

14,

15,

16,

17} , Byungchan Bae _{4,

18,

19,

20} , Yung-Eun Sung _{4,

5,

6,

7,

8} , Yong-Hun Cho _{4,

5,

6,

7,

21} , Jang Yong Lee _{1,

2,

3,

4}

Affiliation

Energy Materials Research Center
Korea Research Institute of Chemical Technology (KRICT)
Daejeon 34114
Republic of Korea
Center for Nanoparticle Research
Institute for Basic Science (IBS)
Seoul 08826
School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP)
Department of Chemical Engineering, Hanyang University
Seoul 04763
Department of Science
Republic of Korea Naval Academy
Changwon 51704
Fuel Cell Research Center
Korea Institute of Science and Technology (KIST)
Seongbuk-gu
Seoul
Fuel Cell Laboratory
Korea Institute of Energy Research (KIER)
Daejeon 34129
Department of Chemical Engineering, Kangwon National University

Anion conducting polymers (ACPs) are essential materials for alkaline electrochemical energy technology such as anion-exchange membrane fuel cells (AEMFCs) and water electrolysers (AEMWEs). The aforementioned polymers are promising alternatives for proton exchange membrane-based systems due to the possibility of using platinum group metal-free electrocatalysts. However, there are still no reliable ACPs possessing the desired performance and stability, which is a major challenge for developing alkaline energy systems. Herein, we highlight an anion-exchange membrane and ionomer based on quaternised poly-carbazole (QPC-TMA) with a rigid ether-free and curved backbone structure comprised of carbazole monomers. The developed ACP exhibits excellent ionic conductivity, as well as chemical and mechanical stability. Moreover, the AEMFC using QPC-TMA shows excellent performance (1.61 W cm⁻²) compared with the other best-performing AEMFCs. In addition, the AEMWE using QPC-TMA demonstrates outstanding stability and state-of-the-art performance (3.5 A cm⁻² at 1.9 V), which is the first report of an AEMWE that outperforms the best-performing proton-exchange membrane water electrolysers.

中文翻译：

高性能和耐用性的聚（咔唑）基阴离子导电材料，用于能量转换装置

阴离子导电聚合物（ACP）是碱性电化学能源技术的重要材料，例如阴离子交换膜燃料电池（AEMFC）和水电解槽（AEMWE）。由于可以使用不含铂族金属的电催化剂，上述聚合物是基于质子交换膜的系统的有希望的替代物。但是，仍然没有可靠的ACP具有所需的性能和稳定性，这对开发碱性能源系统是一个重大挑战。在这里，我们重点介绍基于季铵化聚咔唑（QPC-TMA）的阴离子交换膜和离聚物）具有由咔唑单体组成的无醚刚性且弯曲的骨架结构。研发的ACP具有出色的离子电导率以及化学和机械稳定性。此外，与其他性能最佳的AEMFC相比，使用QPC-TMA的AEMFC显示出出色的性能（1.61 W cm ^-2）。此外，使用QPC-TMA的AEMWE表现出出色的稳定性和最新性能（1.9 V时为3.5 A cm ^-2），这是AEMWE首次超过性能最好的质子交换膜的报道水电解槽。

更新日期：2020-10-14

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