| Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies | |
| Wang, Si-Qi1; Zhang, Bin1; Luo, Yan-Wen1; Meng, Xiangying2; Wang, Zhe-Xuan1; Luo, Xue-Mei3; Zhang, Guang-Ping3 | |
| Corresponding Author | Zhang, Bin(zhangb@atm.neu.edu.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn) |
| 2022-02-11 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
 |
| ISSN | 1944-8244 |
| Pages | 11 |
| Abstract | Electrochemical actuators play a key role in converting electrical energy to mechanical energy. However, a low actuation stress and an unsatisfied strain response rate strongly limit the extensive applications of the actuators. Here, we report hybrid manganese dioxide (MnO2) fabricated by introducing ramsdellite (R-MnO2) and Mn vacancies into birnessite (delta-MnO2) nanosheets, which in situ grew on the surface of a nickel (Ni) film, forming a hybrid MnO2/Ni actuator. The actuator demonstrated a rapid strain response of 0.88% s(-1) (5.3% intrinsic strain in 6 s) and a large actuation stress of 244 MPa owing to the special R-MnO2 with a high density of sodium ion (Na+)-accessible lattice tunnels, Mn vacancies, and also a high Young's modulus of the hybrid MnO2/Ni composite. Besides, the cyclic stability of the actuator was realized after 1.2 x 10(4) cycles of electric stimulation under a frequency of 0.05 Hz. The finding of the novel hybrid MnO2/Ni actuator may provide a new strategy to maximize the actuating performance evidently through tailoring the lattice tunnel structure and introducing cation vacancies into electrochemical electrode materials. |
| Keyword | manganese dioxide ramsdellite cation vacancies electrochemical actuators high actuation stress fast response |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1021/acsami.1c22242 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51971060] ; National Natural Science Foundation of China[51671050] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000757906600001 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173364 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Bin; Zhang, Guang-Ping |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 2.Northeastern Univ, Coll Sci, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Si-Qi,Zhang, Bin,Luo, Yan-Wen,et al. Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies[J]. ACS APPLIED MATERIALS & INTERFACES,2022:11. |
| APA | Wang, Si-Qi.,Zhang, Bin.,Luo, Yan-Wen.,Meng, Xiangying.,Wang, Zhe-Xuan.,...&Zhang, Guang-Ping.(2022).Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies.ACS APPLIED MATERIALS & INTERFACES,11. |
| MLA | Wang, Si-Qi,et al."Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies".ACS APPLIED MATERIALS & INTERFACES (2022):11. |
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