Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies

doi:10.1021/acsami.1c22242

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	Maximizing Performance of a Hybrid MnO2/Ni Electrochemical Actuator through Tailoring Lattice Tunnels and Cation Vacancies
	Wang, Si-Qi 1; Zhang, Bin 1; Luo, Yan-Wen 1; Meng, Xiangying 2; Wang, Zhe-Xuan 1; Luo, Xue-Mei 3; Zhang, Guang-Ping 3
刊名	ACS APPLIED MATERIALS & INTERFACES
	2022-02-11
页码	11
关键词	manganese dioxide ramsdellite cation vacancies electrochemical actuators high actuation stress fast response
ISSN号	1944-8244
DOI	10.1021/acsami.1c22242
通讯作者	Zhang, Bin(zhangb@atm.neu.edu.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
英文摘要	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.
资助项目	National Natural Science Foundation of China[51971060] ; National Natural Science Foundation of China[51671050]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000757906600001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173363]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Bin; Zhang, Guang-Ping
作者单位	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
推荐引用方式 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.