Adjusting Competitive Reaction to Control Nucleation and Growth of MnO2 for a High-Stress Output Electrochemical Actuator

doi:10.1021/acsaelm.3c00634

IMR OpenIR

	Adjusting Competitive Reaction to Control Nucleation and Growth of MnO2 for a High-Stress Output Electrochemical Actuator
	Wang, Si-Qi 1,3; Zhang, Bin 1; Qiao, Rong-Hao 1; Luo, Yan-Wen 1; Luo, Xue-Mei 2; Zhang, Guang-Ping 2
通讯作者	Zhang, Bin(zhangb@atm.neu.edu.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2023-08-24
发表期刊	ACS APPLIED ELECTRONIC MATERIALS
卷号	5 期号:9 页码:4836-4845
摘要	Manganese dioxide (MnO2) with biocompatibility has promising applications in low-voltage electrochemical actuators of implantable medical devices, which can convert electrical energy to mechanical motion. However, the unsatisfactory actuation strain restricts the generation of a larger output stress of MnO2 for practical application. Herein, a competitive reaction-driven-MnO2 (CRD-MnO2) nanorod network was fabricated on a nickel (Ni) thin-film substrate by adjusting the component molar ratios. We find that the competitive reaction between 3,4-ethylene-dioxythiophene (EDOT) polymerization and oxidation of Mn2+ controls the nucleation and growth behavior of MnO2. The variation in the electron environment, newly generated oxygen vacancies, and a higher content of structural water effectively improve the electroactivity of MnO2 and simultaneously cause more serious Jahn-Teller (JT) distortion of the crystal octahedrons. Thus, an excellent output performance simultaneously having a much higher actuating strain of 8.3% and an actuation stress of 390.1 MPa is generated during a redox reaction between Mn4+ and Mn3+ under 0-1 V. Moreover, the CRD-MnO2/Ni composite actuating films assembled on a 3D-printed resin model of a human hand with separated finger joints can perform smooth grasping and releasing actions, demonstrating a huge potential for in vitro rehabilitation exercises and implantability for people with finger dyskinesia. This work provides a strategy for actuator material fabrication by controlling a nucleation and growth process by adjusting a competitive reaction.
关键词	manganese dioxide competitive reaction electrochemicalactuator high output stress artificial muscle
资助者	National Natural Science Foundation of China ; China Scholarship Council
DOI	10.1021/acsaelm.3c00634
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971060] ; National Natural Science Foundation of China[51671050] ; China Scholarship Council[202106080077]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary
WOS记录号	WOS:001063591600001
出版者	AMER CHEMICAL SOC
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179162
专题	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.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Linkoping Univ, Dept Phys Chem & Biol IFM, Sensor & Actuator Syst, S-58183 Linkoping, Sweden
推荐引用方式 GB/T 7714	Wang, Si-Qi,Zhang, Bin,Qiao, Rong-Hao,et al. Adjusting Competitive Reaction to Control Nucleation and Growth of MnO2 for a High-Stress Output Electrochemical Actuator[J]. ACS APPLIED ELECTRONIC MATERIALS,2023,5(9):4836-4845.
APA	Wang, Si-Qi,Zhang, Bin,Qiao, Rong-Hao,Luo, Yan-Wen,Luo, Xue-Mei,&Zhang, Guang-Ping.(2023).Adjusting Competitive Reaction to Control Nucleation and Growth of MnO2 for a High-Stress Output Electrochemical Actuator.ACS APPLIED ELECTRONIC MATERIALS,5(9),4836-4845.
MLA	Wang, Si-Qi,et al."Adjusting Competitive Reaction to Control Nucleation and Growth of MnO2 for a High-Stress Output Electrochemical Actuator".ACS APPLIED ELECTRONIC MATERIALS 5.9(2023):4836-4845.