Scaling the synergistic properties of MXene nanosheets to microporous aerogel architectures requires effective strategies to overcome the nanosheet restacking without compromising MXene's advantageous properties. Traditional assembly approaches of 3D MXene aerogels normally involve external binders/templates and/or additional functionalization, which sacrifice the electrical conductivities and electrochemical activities of MXene aerogels. Herein, inspired by the hierarchal scale textures of Phrynosoma cornutum, a crumple-textured Ti₃C₂T_x MXene platform is engineered to facilitate Mg²⁺-induced assembly, enabling conformal formation of large-area Mg²⁺-MXene aerogels without polymeric binders. Through a doctor blading technique and freeze drying, the Mg²⁺-MXene aerogels are produced with customized shapes/dimensions, featuring high surface area (140.5 m² g⁻¹), superior electrical conductivity (758.4 S m⁻¹), and high robustness in water. The highly conductive MXene aerogels show their versatile applications from macroscale technologies (e.g., electromagnetic interference shielding and capacitive deionization (CDI)) to on-chip electronics (e.g., quasi-solid-state microsupercapacitors (QMSCs)). As CDI electrodes, the Mg²⁺-MXene aerogels exhibit high salt adsorption capacity (33.3 mg g⁻¹) and long-term operation reliability (over 30 cycles), showing a superb comparison with the literature. Also, the QMSCs with interdigitated Mg²⁺-MXene aerogel electrodes demonstrate high areal capacitances (409.3 mF cm⁻²) with superior power density and energy density compared with other state-of-art QMSCs.

中文翻译：

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通过用于电磁干扰屏蔽、电容去离子和微型超级电容器的仿生微纹理金属离子诱导组装 MXene 气凝胶

将 MXene 纳米片的协同特性扩展到微孔气凝胶结构需要有效的策略来克服纳米片重新堆叠而不影响 MXene 的优势特性。3D MXene 气凝胶的传统组装方法通常涉及外部粘合剂/模板和/或额外的功能化，这会牺牲 MXene 气凝胶的导电性和电化学活性。在此，受Phrynosoma cornutum分层纹理的启发，设计了皱褶纹理的 Ti ₃ C ₂ T _x MXene 平台以促进 Mg ²⁺诱导组装，从而实现大面积 Mg ^{2+ 的}保形形成-不含聚合物粘合剂的 MXene 气凝胶。通过刮刀技术和冷冻干燥，Mg ²⁺ -MXene 气凝胶具有定制的形状/尺寸，具有高表面积（140.5 m ² g ^-1）、优异的导电性（758.4 S m ^-1）和高在水中的坚固性。高导电性 MXene 气凝胶展示了其从宏观技术（例如，电磁干扰屏蔽和电容去离子（CDI））到片上电子（例如，准固态微型超级电容器（QMSC））的多种应用。作为 CDI 电极，Mg ²⁺ -MXene 气凝胶表现出高盐吸附能力（33.3 mg g ^-1) 和长期运行可靠性（超过 30 次循环），与文献进行了极好的比较。此外，与其他最先进的 QMSC 相比，具有叉指式 Mg ²⁺ -MXene 气凝胶电极的 QMSC 表现出高面积电容 (409.3 mF cm ^-2 ) 以及优异的功率密度和能量密度。