Nanowires with anisotropic morphologies have been applied in various scientific and technological areas. It is also widely employed to fabricate nanowires into high-dimensional superstructures (arrays, networks etc.) to overcome the shortcomings of low-dimensional nanowires. However, typical strategies for constructing these superstructures are restricted to complicated and harsh synthetic conditions, not to mention unique 3D structures with advanced properties beyond common superstructures. Herein, we report an unusual network of α-MnO₂ nanowires with structure-induced hydrophilicity and conductivity. In the network, the nanowires are interconnected from all directions by nodes, and the 3D network structure is formed from the endless connection of nodes in a node-by-node way. The unique network structure brings about high hydrophilicity and conductivity, both of which are positive factors for an efficient electrocatalyst. Accordingly, the α-MnO₂ network was tested for electrocatalytic water oxidation and showed significantly enhanced activity compared with isolated α-MnO₂ nanowires and 3D α-MnO₂ microspheres. This study not only provides a synthetic route toward an advanced network structure but also a new idea for the design of materials for electrochemistry with both efficient mass diffusion and charge transfer.

具有各向异性形态的纳米线已应用于各种科学和技术领域。它还被广泛用于将纳米线制造成高维超结构（阵列、网络等）以克服低维纳米线的缺点。然而，构建这些上层结构的典型策略仅限于复杂和苛刻的合成条件，更不用说具有超越普通上层结构的先进性能的独特 3D 结构。在此，我们报告了一个不寻常的α -MnO ₂网络具有结构诱导亲水性和导电性的纳米线。在网络中，纳米线通过节点从四面八方互连起来，由节点以逐节点的方式无限连接形成3D网络结构。独特的网络结构带来了高亲水性和导电性，这两者都是高效电催化剂的积极因素。因此，α- MnO ₂网络被测试用于电催化水氧化，并且与孤立的α- MnO ₂纳米线和3D α- MnO ₂相比显示出显着增强的活性微球。这项研究不仅提供了一条通往先进网络结构的合成路线，而且为设计具有高效质量扩散和电荷转移的电化学材料提供了新思路。