Eutectic-derived synthesis of hierarchically nanoporous copper for electrochemical actuation and solar steam generation

Bai, Qingguo; Wang, Yan; Tan, Fuquan; Zhang, Zhonghua

doi:10.1007/s12274-023-5998-y

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…The amount of OH − that can be adsorbed is limited under the stimulation of +0.5 V, so the strain amplitude gradually reaches the upper limit after the cycle time reaches a certain value. The sample reaches the maximum strain amplitude of 1.19% (Figure 6d) when the period reaches 10,000 s, which is five times that of NP-Cu (0.22%) [11]. In addition, the strain rate is a key issue for the metallic actuator [12], which is mainly restricted by the mass transfer within the nanopore of the bulk metallic actuator.…”

Section: Maximum Strain Amplitudementioning

confidence: 97%

“…However, the raw materials of precious metal actuators are expensive and have limited reserves, making them unlikely to be put into mass production. In contrast, non-precious metals became substitutes for precious metals due to their relatively cheap prices and abundant reserves; currently, non-precious metal actuators such as NP-Cu [10,11] have been designed. However, non-precious metal actuators obtained through binary alloy dealloying are generally lower in terms of performance than noble metal actuators.…”

Section: Introductionmentioning

confidence: 99%

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The Electrochemical Actuation Performances of Nanoporous Ternary AlCoCu Alloy with a Unique Nanosheet Structure

Chen,

Tan,

Wang

et al. 2023

Materials

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Compared to traditional actuators (such as piezoelectric ceramics), metal actuators possess the advantages of a low energy consumption, large strain amplitude, and high strain energy density. However, most of the existing metal actuators with an excellent comprehensive performance are composed of precious metals, which are limited by high costs and have almost no possibility for large-scale production in the future. This study focuses on non-precious metal materials and exploits a one-step chemical dealloying method to prepare bulk nanoporous (NP) CoCuAl actuators (NP-CCA) from Al70Co20Cu10 alloy. The microstructure and actuation properties of the NP-CCA were analyzed in detail. The dense continuous nanoscale pores provide an excellent network connectivity for a large strain response, enabling the NP-CCA to achieve a strain amplitude of up to 1.19% (more than eight and two times that of NP-Pt and NP-Ag, respectively), comparable to precious metal actuators. In addition, the NP-CCA possesses a high strain energy density, which is prominent in many precious metal actuation materials (such as NP-Au, NP-Ag, and NP-Pt).

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Section: Maximum Strain Amplitudementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%