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Boosting photoelectrochemical water splitting with recyclable isotropic pyrolytic graphite conductive substrates

文献类型：期刊论文

作者Xu, Wei1,2; Zhen, Chao1,2; Qiu, Jianhang1,2; Du, Yufei1,2; Bai, Shuo3; Cheng, Hui-Ming2,4; Liu, Gang1,2
刊名SCIENCE CHINA-MATERIALS
出版日期2023-11-14
页码6
关键词isotropic pyrolytic graphite photoelectrochemical recycleable ohmic contact conductive substrate
ISSN号2095-8226
DOI10.1007/s40843-023-2628-7
通讯作者Zhen, Chao(czhen@imr.ac.cn) ; Bai, Shuo(sbai@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn)
英文摘要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.
资助项目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研究方向Materials Science
语种英语
WOS记录号WOS:001109458000002
出版者SCIENCE PRESS
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/177333]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhen, Chao; Bai, Shuo; Liu, Gang
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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