| Boosting photoelectrochemical water splitting with recyclable isotropic pyrolytic graphite conductive substrates | |
| Xu, Wei1,2; Zhen, Chao1,2; Qiu, Jianhang1,2; Du, Yufei1,2; Bai, Shuo3; Cheng, Hui-Ming1,4; Liu, Gang1,2 | |
| Corresponding Author | Zhen, Chao(czhen@imr.ac.cn) ; Bai, Shuo(sbai@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn) |
| 2023-11-14 | |
| Source Publication | SCIENCE CHINA-MATERIALS
 |
| ISSN | 2095-8226 |
| Pages | 6 |
| Abstract | The conductive substrates as indispensable component of photoelectrodes play a critical role in collecting photogenerated charges for efficient photoelectrochemical (PEC) water splitting but have been less concerned in constructing photoelectrodes. Here, we exploited the isotropic pyrolytic graphite (IPG) as a kind of recyclable conductive substrates for the construction of high-performance photoelectrodes. Compared with widely used conductive substrates such as fluorine-doped tin oxide (FTO) and metal foils, IPG reveals the merits of high electrical conductivity, large work function, and good resistance to high-temperature treatment and embrittlement in reductive atmospheres for superior photoelectrodes. The resulting IPG/Cu2O photocathode can deliver a higher photocurrent density by over 60% than the reference FTO/Cu2O photocathode, benefiting from the large work function of IPG that facilitates the formation of Ohmic contact with Cu2O. The high-temperature nitrided Ta3N5 photoactive film on the IPG substrate (IPG/Ta3N5) can display PEC performance superior to that of the Ta foil-supported Ta3N5 photoanode. Moreover, in contrast to the Ta foils, which exhibit typically unrecyclable characteristics due to serious hydrogen embrittlement in nitridation, the IPG substrate could be recycled to grow semiconductor films with identical PEC performance. This work offers an alternative and attractive choice of constructing efficient photoelectrodes via carbon-based conductive substrates for PEC water splitting. |
| Keyword | isotropic pyrolytic graphite photoelectrochemical recycleable ohmic contact conductive substrate |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province ; New Cornerstone Science Foundation through the XPLORER PRIZE |
| DOI | 10.1007/s40843-023-2628-7 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2021YFA1500800] ; National Natural Science Foundation of China[51825204] ; National Natural Science Foundation of China[52072377] ; National Natural Science Foundation of China[52188101] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2020192] ; Natural Science Foundation of Liaoning Province[2021-MS-014] ; New Cornerstone Science Foundation through the XPLORER PRIZE |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:001109458000002 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/177334 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhen, Chao; Bai, Shuo; Liu, Gang |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Shenzhen Inst Adv Technol, Inst Technol Carbon Neutral, Shenzhen 518055, Peoples R China |
| Recommended Citation GB/T 7714 | Xu, Wei,Zhen, Chao,Qiu, Jianhang,et al. Boosting photoelectrochemical water splitting with recyclable isotropic pyrolytic graphite conductive substrates[J]. SCIENCE CHINA-MATERIALS,2023:6. |
| APA | Xu, Wei.,Zhen, Chao.,Qiu, Jianhang.,Du, Yufei.,Bai, Shuo.,...&Liu, Gang.(2023).Boosting photoelectrochemical water splitting with recyclable isotropic pyrolytic graphite conductive substrates.SCIENCE CHINA-MATERIALS,6. |
| MLA | Xu, Wei,et al."Boosting photoelectrochemical water splitting with recyclable isotropic pyrolytic graphite conductive substrates".SCIENCE CHINA-MATERIALS (2023):6. |
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