journal article·2025-12Open access

Enhanced Hydrogen Release from Hydrogen Boride Nanosheets via Carbon Doping

Riku Kawamura, Reiya Kawamura, Arpita Varadwaj, Kazuaki Kisu, Rika Tanaka, Akiyasu Yamamoto, Ryota Ishibiki, Shin‐ichi Ito, Takeshi Fujita, Tomoharu Tokunaga, Osamu Oki, Yoshitaka Fujimoto, Masayuki Toyoda, Susumu Saito, Toyoto Sato, Shin‐ichi Orimo, Hideo Hosono, Iwao Matsuda, Masato Kotsugi, Masahiro Miyauchi, Takahiro Kondo

Small Structures· Volume 6· Issue 12

Abstract

Hydrogen boride (HB) nanosheets, which exhibit unique BHB bonding and intrinsic hydrogen release properties, show improved performance upon carbon doping. Herein, the synthesis of carbon‐doped HB via ion exchange is demonstrated by using carbon‐doped MgB 2 as a precursor. Comprehensive spectroscopic analyses inferred carbon substitution at boron sites, leading to structural distortions and electronic modifications. These changes weaken BHB bonds, thereby facilitating improved hydrogen release under both thermal and ultraviolet (UV) stimuli. Temperature‐programed desorption measurements reveal a reduction in the activation energy for intralayer hydrogen desorption with increasing carbon content, while UV‐induced hydrogen evolution shows a markedly lower onset threshold. Density functional theory calculations support these experimental findings, further demonstrating elongation of BB distances and shifts in vibrational modes. Overall, these results establish carbon doping as an effective strategy for modulating the chemical and electronic environment of HB, offering a promising pathway toward high‐efficiency, tunable hydrogen storage, and release materials.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Boron and Carbon Nanomaterials Research · MXene and MAX Phase Materials · Hydrogen Storage and Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Pure and Applied Sciences University of Tsukuba Tsukuba Japan

Department of Materials Science and Engineering School of Materials and Chemical Technology Institute of Science Tokyo Meguro‐ku Japan

Department of Material Science and Technology Tokyo University of Science Katsushika Japan

College of Engineering Shibaura Institute of Technology Koto‐ku Japan

Institute of Engineering Tokyo University of Agriculture and Technology Koganei Japan

School of Environmental Science and Engineering Kochi University of Technology Kochi Japan

Graduate School of Engineering Materials Design Innovation Engineering Nagoya University Chikusa‐ku Japan

Department of Physics Institute of Science Tokyo Meguro‐ku Japan

Institute for Materials Research Tohoku University Sendai Japan

Advanced Institute for Materials Research (WPI‐AIMR) Tohoku University Sendai Japan

Research Center for Materials Nanoarchitectonics National Institute for Materials Science Tsukuba Japan

MDX Research Center for Element Strategy Institute of Science Tokyo Yokohama Japan

Institute for Solid State Physics The University of Tokyo Kashiwa Japan

Hydrogen Boride Research Center Tsukuba Institute for Advanced Research (TIAR) University of Tsukuba Tsukuba Japan

References (52)

Show source-provided references
1. 10.1021/acs.chemrev.6b0055810.1021/acs.chemrev.6b00558 ↗
2. 10.1038/s41557‐025‐01773‐410.1038/s41557‐025‐01773‐4 ↗
3. 10.1016/j.mtchem.2025.10271610.1016/j.mtchem.2025.102716 ↗
4. 10.1039/D1TA09562E10.1039/D1TA09562E ↗
5. 10.1631/jzus.A240000310.1631/jzus.A2400003 ↗
6. 10.1103/PhysRevB.83.09410810.1103/PhysRevB.83.094108 ↗
7. 10.1103/PhysRevB.84.09430310.1103/PhysRevB.84.094303 ↗
8. 10.1002/anie.20160436910.1002/anie.201604369 ↗
9. 10.1080/14686996.2017.137985610.1080/14686996.2017.1379856 ↗
10. 10.1038/s41467‐023‐43294‐z10.1038/s41467‐023‐43294‐z ↗
11. 10.1246/cl.23021010.1246/cl.230210 ↗
12. 10.1002/anie.20200104510.1002/anie.202001045 ↗
13. 10.1021/acsami.1c1595310.1021/acsami.1c15953 ↗
14. 10.26599/NRE.2023.912005110.26599/NRE.2023.9120051 ↗
15. 10.1021/jacs.7b0615310.1021/jacs.7b06153 ↗
16. 10.1038/s41467‐019‐12903‐110.1038/s41467‐019‐12903‐1 ↗
17. 10.1002/admi.20230041410.1002/admi.202300414 ↗
18. 10.1002/smll.20240498610.1002/smll.202404986 ↗
19. 10.1002/advs.20240598110.1002/advs.202405981 ↗
20. 10.1021/acsami.4c0776810.1021/acsami.4c07768 ↗
21. 10.1002/smll.20231023910.1002/smll.202310239 ↗
22. 10.1039/D0CP03079A10.1039/D0CP03079A ↗
23. 10.1021/acsomega.9b0202010.1021/acsomega.9b02020 ↗
24. 10.1246/cl.20020610.1246/cl.200206 ↗
25. 10.1039/D0TA06542K10.1039/D0TA06542K ↗
26. 10.1016/j.apcatb.2021.12052910.1016/j.apcatb.2021.120529 ↗
27. 10.3390/molecules2723826110.3390/molecules27238261 ↗
28. 10.1021/acsami.2c0851010.1021/acsami.2c08510 ↗
29. 10.1038/s43246‐021‐00184‐510.1038/s43246‐021‐00184‐5 ↗
30. 10.1039/D3CP01256E10.1039/D3CP01256E ↗
31. 10.1039/D4TB02854F10.1039/D4TB02854F ↗
32. 10.1088/0953‐2048/17/12/00710.1088/0953‐2048/17/12/007 ↗
33. 10.1088/0953‐2048/18/10/01210.1088/0953‐2048/18/10/012 ↗
34. 10.1016/j.chempr.2019.11.00610.1016/j.chempr.2019.11.006 ↗
35. 10.1126/science.266.5191.168310.1126/science.266.5191.1683 ↗
36. 10.1016/0379‐6779(89)90355‐X10.1016/0379‐6779(89)90355‐X ↗
37. 10.1021/acs.jpclett.4c0197510.1021/acs.jpclett.4c01975 ↗
38. 10.1016/S0921‐4534(03)01296‐610.1016/S0921‐4534(03)01296‐6 ↗
39. 10.1246/cl.20020310.1246/cl.200203 ↗
40. 10.1103/PhysRev.136.B86410.1103/PhysRev.136.B864 ↗
41. 10.1103/PhysRev.140.A113310.1103/PhysRev.140.A1133 ↗
42. 10.1103/PhysRevLett.45.56610.1103/PhysRevLett.45.566 ↗
43. 10.1103/PhysRevB.23.504810.1103/PhysRevB.23.5048 ↗
44. 10.1103/PhysRevB.43.199310.1103/PhysRevB.43.1993 ↗
45. 10.1103/PhysRevB.54.558610.1103/PhysRevB.54.5586 ↗
46. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
47. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
48. 10.1103/PhysRevB.107.19512210.1103/PhysRevB.107.195122 ↗
49. H.Press W. · 1996
50. 10.1103/PhysRevB.73.04511210.1103/PhysRevB.73.045112 ↗
51. 10.1103/PhysRevB.54.1116910.1103/PhysRevB.54.11169 ↗
52. 10.1103/PhysRevB.47.55810.1103/PhysRevB.47.558 ↗