The preparation of polymer hydrogels with excellent mechanical stability and high conductivity still remains huge challenges in practical applications as wearable electronics and energy storage. Herein a new strategy is proposed to prepare uniform poly(amidoxime)/polyethyleneimine (PAO/PEI) hydrogel through hydrogen bond interactions. The as-prepared PAO/PEI hydrogels demonstrate good compressive strength (7.07 kPa) and transparency. Due to the excellent ionic adsorption properties of PAO containing the amidoxime groups, it is firstly found that the PAO/PEI hydrogels show a ultrahigh ionic conductivity of 19.1 S m⁻¹ in 6 M LiCl, and the hydrogels also present an excellent alkaline tolerance with ionic conductivity as high as 22.35 S m⁻¹ in 6 M KOH. Furthermore, graphene oxide (GO) is introduced into the PAO/PEI system to form PAO/PEI/reduced GO (rGO) hydrogels which exhibit higher mechanical strength, and can endow electronic conductivity. Moreover, both the as-prepared PAO/PEI/LiCl₁ (1 M LiCl) and PAO/PEI/rGO/LiCl₁ (1 M LiCl) hydrogels as pressure sensors, present high sensitivity (5.09 and 8.55 kPa⁻¹ respectively), ultra-low detection limit (20 Pa), and excellent cycle stability (1000 compression cycles). It can be expected that the PAO-based hydrogels with high ionic conductivity developed firstly will have a broad application prospects in wearable sensing devices and energy storage/conversion devices.

制备具有优异机械稳定性和高导电性的聚合物水凝胶在可穿戴电子设备和储能等实际应用中仍然存在巨大挑战。本文提出了一种通过氢键相互作用制备均匀的聚（脒肟）/聚乙烯亚胺（PAO/PEI）水凝胶的新策略。所制备的 PAO/PEI 水凝胶表现出良好的抗压强度 (7.07 kPa) 和透明度。由于含有偕胺肟基团的 PAO 具有优异的离子吸附性能，首次发现 PAO/PEI 水凝胶在 6 M LiCl 中表现出 19.1 S m ^-1的超高离子电导率，并且水凝胶还表现出优异的耐碱性离子电导率高达 22.35 S m ^-1在 6 M KOH 中。此外，将氧化石墨烯（GO）引入PAO/PEI体系中形成PAO/PEI/还原GO（rGO）水凝胶，具有更高的机械强度，并具有电子导电性。此外，所制备的 PAO/PEI/LiCl ₁ (1 M LiCl) 和 PAO/PEI/rGO/LiCl ₁ (1 M LiCl) 水凝胶作为压力传感器均具有高灵敏度（分别为 5.09 和 8.55 kPa ^-1），超低检测限（20 Pa）和出色的循环稳定性（1000 次压缩循环）。可以预期，首先开发的具有高离子电导率的PAO基水凝胶将在可穿戴传感装置和储能/转换装置中具有广阔的应用前景。