3D-printed hierarchical pillar array electrodes for high-performance 
semi-artificial photosynthesis

Chen, X.; Lawrence, J. M.; Wey, L. T.; Schertel, L.; Jing, Q.; Vignolini, Silvia; Howe, C. J.; Kar-Narayan, S.; Zhang, J. Z.

doi:10.1038/s41563-022-01205-5

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

3D-printed hierarchical pillar array electrodes for high-performance semi-artificial photosynthesis

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Chen, X., Lawrence, J. M., Wey, L. T., Schertel, L., Jing, Q., Vignolini, S., Howe, C. J., Kar-Narayan, S., & Zhang, J. Z. (2022). 3D-printed hierarchical pillar array electrodes for high-performance semi-artificial photosynthesis. Nature Materials, 21(7), 811-818. doi:10.1038/s41563-022-01205-5.

引用: https://hdl.handle.net/21.11116/0000-000B-FAF0-C

要旨

The rewiring of photosynthetic biomachineries to electrodes is a forward-looking semi-artificial route for sustainable bio-electricity and fuel generation. Currently, it is unclear how the electrode and biomaterial interface can be designed to meet the complex requirements for high biophotoelectrochemical performance. Here we developed an aerosol jet printing method for generating hierarchical electrode structures using indium tin oxide nanoparticles. We printed libraries of micropillar array electrodes varying in height and submicrometre surface features, and studied the energy/electron transfer processes across the bio-electrode interfaces. When wired to the cyanobacterium Synechocystis sp. PCC 6803, micropillar array electrodes with microbranches exhibited favourable biocatalyst loading, light utilization and electron flux output, ultimately almost doubling the photocurrent of state-of-the-art porous structures of the same height. When the micropillars’ heights were increased to 600 µm, milestone mediated photocurrent densities of 245 µA cm–2 (the closest thus far to theoretical predictions) and external quantum efficiencies of up to 29% could be reached. This study demonstrates how bio-energy from photosynthesis could be more efficiently harnessed in the future and provide new tools for three-dimensional electrode design. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.