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自催化化学凝聚液体金属乳液

Stephanie F Zopf¹, Ramón E Sánchez Cruz¹, Chloe Kekedjian²

¹Department of Mechanical Engineering, Boston University, 730 Commonwealth Avenue, Boston, MA, 02215, USA.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|April 26, 2025

概括

研究人员开发了一种新方法,使用化物化合物进行化学激活来提高液态金属乳液 (LMEs) 的电导率. 这一过程使得在温和的温度下轻松3D打印功能性电子设备.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
化学工程是化学工程的重要组成部分.

背景情况:

基于的液态金属合金 (GaLMAs) 是用于软电子和能源设备的多功能材料.
液体金属乳液 (LMEs) 提供了更好的可加工性,但由于表面氧化物而导致电导率降低.
目前恢复导电性的方法需要恶劣的条件,限制了应用.

研究的目的:

开发一种温和的化学方法,用于在LME中凝聚液体金属滴.
为了创建具有高电导率和形状保留的3D可打印LME油墨.
为了证明使用这些油墨制造功能性电子设备的制造.

主要方法:

合并化物化合物到英 (eGaIn) 液体金属乳液中.
在温和的温度 (∼80°C) 下,在分散的水滴上化学蚀刻氧化物层.
通过改变化物类型,度和混合条件,优化用于直接墨水写作 (DIW) 的墨水配方.

主要成果:

在化学激活和加热后,达到接近散装液体金属的电导率 (2.4 × 10⁴ S cm^-1).
开发了3D打印LME油墨,具有出色的形状保留和DIW兼容性.
通过混合3D打印工艺成功制造了电池集成的发光二极管阵列.

结论:

用化物化合物的化学激活提供了一种有效的途径,以在温和的温度下恢复LME的导电性.
开发的LME油墨适用于复杂电子设备的增材制造.
这种方法可以实现非破坏性,低温激活功能性设备制造.

关键词:

催化剂是一种催化剂.化学凝聚是化学凝聚的过程.化学烧结是一种化学烧结.导电性油墨是一种导电性油墨.乳液是一种乳液,乳液是乳液.混合型3D打印技术的使用.液体金属是一种流动金属.

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