Miyake Junpei, Ogawa Yasunari, Tanaka Toshiki, Ahn Jinju, Oka Kouki, Oyaizu Kenichi, Miyatake Kenji
Clean Energy Research Center, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi, 400-8510, Japan.
Department of Applied Chemistry, and Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan.
Commun Chem. 2020 Oct 9;3(1):138. doi: 10.1038/s42004-020-00384-z.
Proton exchange membrane fuel cells (PEMFCs) are promising clean energy conversion devices in residential, transportation, and portable applications. Currently, a high-pressure tank is the state-of-the-art mode of hydrogen storage; however, the energy cost, safety, and portability (or volumetric hydrogen storage capacity) presents a major barrier to the widespread dissemination of PEMFCs. Here we show an 'all-polymer type' rechargeable PEMFC (RCFC) that contains a hydrogen-storable polymer (HSP), which is a solid-state organic hydride, as the hydrogen storage media. Use of a gas impermeable SPP-QP (a polyphenylene-based PEM) enhances the operable time, reaching up to ca. 10.2 s mg, which is more than a factor of two longer than that (3.90 s mg) for a Nafion NRE-212 membrane cell. The RCFCs are cycleable, at least up to 50 cycles. The features of this RCFC system, including safety, ease of handling, and light weight, suggest applications in mobile, light-weight hydrogen-based energy devices.
质子交换膜燃料电池（PEMFC）在住宅、交通和便携式应用中是很有前景的清洁能源转换装置。目前，高压罐是最先进的储氢方式；然而，能源成本、安全性和便携性（或体积储氢容量）是质子交换膜燃料电池广泛应用的主要障碍。在此，我们展示了一种“全聚合物型”可充电质子交换膜燃料电池（RCFC），它包含一种可储氢聚合物（HSP），即一种固态有机氢化物，作为储氢介质。使用不透气的SPP-QP（一种基于聚苯撑的质子交换膜）可延长可操作时间，达到约10.2 s mg，比Nafion NRE-212膜电池的可操作时间（3.90 s mg）长两倍多。这种可充电质子交换膜燃料电池至少可循环50次。这种可充电质子交换膜燃料电池系统的特点，包括安全性、易于操作和重量轻，表明其可应用于移动、轻型氢基能源装置。
