材料科学
纳米线
纳米技术
电极
纳米材料
复合数
渗透(认知心理学)
电导率
生物电子学
复合材料
生物传感器
化学
物理化学
神经科学
生物
作者
Jae Weon Choi,JinKi Min,Dohyung Kim,Jin Kim,Jinsol Kim,Hye-Kyung Yoon,Dong Won Lee,Yunkyung Jeong,C‐Yoon Kim,Seung Hwan Ko
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-09-05
卷期号:17 (18): 17966-17978
被引量:7
标识
DOI:10.1021/acsnano.3c04292
摘要
Metal nanomaterials are highly valued for their enhanced surface area and electrochemical properties, which are crucial for energy devices and bioelectronics. However, their practical applications are often limited by challenges, such as scalability and dimensional constraints. In this study, we developed a synthesis method for highly porous Ag–Au core–shell nanowire foam (AACNF) using a one-pot process based on a simultaneous nanowelding synthesis method. The unique characteristics of AACNF as metal-based electrodes show the lowest density among metal-based electrodes while demonstrating high electrical conductivity (99.33–753.04 S/m) and mechanical stability. The AACNF’s excellent mass transport properties enable multiscale hierarchical incorporation with functional materials including polymeric precursors and living cells. The enhanced mechanical stability at the nanowelded junctions allows AACNF-hydrogel composites to exhibit large stretching (∼700%) and 10,000 times higher electrical conductivity than hydrogel-nanowire composites without the junction. Large particles in the 1–10 μm scale, including fibroblast cells and exoelectrogenic microbes, are also successfully incorporated with AACNF. AACNF-based microbial fuel cells show high power density (∼330.1 W/m3) within the optimal density range. AACNF’s distinctive ability to form a hierarchical structure with substances in various scales showcases its potential for advanced energy devices and biohybrid electrodes in the future.
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