Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon
Summary: We developed composite photoresins for sustainable production of microarchitected carbon electrodes via stereolithography (SLA) 3D printing. The composite resins contain 20–25 mass% water that decreases the amount of organic waste. After printing, the scaffolds were pyrolyzed into honeycomb...
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| Language: | English |
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Elsevier
2025-06-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225009794 |
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| author | Akira Kudo Kazuya Eguchi Atsuya Fujita Shinnosuke Kamohara Kota Matsuhashi Qite Li Jinling Ma Kodai Endo Satoko Kuwano-Nakatani Mingwei Chen |
| author_facet | Akira Kudo Kazuya Eguchi Atsuya Fujita Shinnosuke Kamohara Kota Matsuhashi Qite Li Jinling Ma Kodai Endo Satoko Kuwano-Nakatani Mingwei Chen |
| author_sort | Akira Kudo |
| collection | DOAJ |
| description | Summary: We developed composite photoresins for sustainable production of microarchitected carbon electrodes via stereolithography (SLA) 3D printing. The composite resins contain 20–25 mass% water that decreases the amount of organic waste. After printing, the scaffolds were pyrolyzed into honeycomb carbon microlattices (hCMLs) at 1,000°C in vacuum. hCMLs show reduced density as the water content increases, inferring subnanoscale structural changes within the constituent carbon. Ni added to photoresin thrusts graphitization at 1,000°C so reduces thermal energy conventional graphitization requires, especially when water delivers individual Ni ions. The homogeneously dispersed Ni ions, in contrast to Ni nanoparticles that aggregate, interconnected graphitized zones in hCMLs to lower electrical resistivity by ∼50%. The Ni-doped hCMLs readily serve as a bifunctional electrocatalyst for water splitting, inspiring design of functional microarchitected carbon composites. Our results can reduce waste and save energy in fabricating carbon microarchitectures, benefitting a wide range of electrical, electrochemical and other applications. |
| format | Article |
| id | doaj-art-ae3129f152d140cbba29e31e75dd0320 |
| institution | DOAJ |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-ae3129f152d140cbba29e31e75dd03202025-08-20T03:07:51ZengElsevieriScience2589-00422025-06-0128611271810.1016/j.isci.2025.112718Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbonAkira Kudo0Kazuya Eguchi1Atsuya Fujita2Shinnosuke Kamohara3Kota Matsuhashi4Qite Li5Jinling Ma6Kodai Endo7Satoko Kuwano-Nakatani8Mingwei Chen9WPI-AIMR, Tohoku University, Sendai, Japan; Corresponding authorDepartment of Electrical and Electronic Engineering, Tohoku Gakuin University, Sendai, JapanDepartment of Electrical and Electronic Engineering, Tohoku Gakuin University, Sendai, JapanDepartment of Materials Science and Engineering, Tohoku University, Sendai, JapanDepartment of Mechanical and Aerospace Engineering, Tohoku University, Sendai, JapanWPI-AIMR, Tohoku University, Sendai, Japan; School of Materials Science and Engineering, Tianjin University, Tianjin, P.R. ChinaWPI-AIMR, Tohoku University, Sendai, JapanDepartment of Electrical and Electronic Engineering, Tohoku Gakuin University, Sendai, JapanDepartment of Electrical and Electronic Engineering, Tohoku Gakuin University, Sendai, Japan; Corresponding authorDepartment of Materials Science and Engineering & Institute of Innovative Materials, Southern University of Science and Technology, Shenzhen, P.R. China; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, USA; Corresponding authorSummary: We developed composite photoresins for sustainable production of microarchitected carbon electrodes via stereolithography (SLA) 3D printing. The composite resins contain 20–25 mass% water that decreases the amount of organic waste. After printing, the scaffolds were pyrolyzed into honeycomb carbon microlattices (hCMLs) at 1,000°C in vacuum. hCMLs show reduced density as the water content increases, inferring subnanoscale structural changes within the constituent carbon. Ni added to photoresin thrusts graphitization at 1,000°C so reduces thermal energy conventional graphitization requires, especially when water delivers individual Ni ions. The homogeneously dispersed Ni ions, in contrast to Ni nanoparticles that aggregate, interconnected graphitized zones in hCMLs to lower electrical resistivity by ∼50%. The Ni-doped hCMLs readily serve as a bifunctional electrocatalyst for water splitting, inspiring design of functional microarchitected carbon composites. Our results can reduce waste and save energy in fabricating carbon microarchitectures, benefitting a wide range of electrical, electrochemical and other applications.http://www.sciencedirect.com/science/article/pii/S2589004225009794Natural sciencesApplied sciencesMaterials science |
| spellingShingle | Akira Kudo Kazuya Eguchi Atsuya Fujita Shinnosuke Kamohara Kota Matsuhashi Qite Li Jinling Ma Kodai Endo Satoko Kuwano-Nakatani Mingwei Chen Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon iScience Natural sciences Applied sciences Materials science |
| title | Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon |
| title_full | Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon |
| title_fullStr | Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon |
| title_full_unstemmed | Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon |
| title_short | Ni-doped 3D-printed honeycomb carbon microlattices: Sustainable fabrication and functionalization of microarchitected carbon |
| title_sort | ni doped 3d printed honeycomb carbon microlattices sustainable fabrication and functionalization of microarchitected carbon |
| topic | Natural sciences Applied sciences Materials science |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225009794 |
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