To solve the leakage issue of phase change material (PCM)-based battery thermal management (BTM) technology, a novel composite PCM (CPCM) is prepared herein by constructing a nanoscale resorcinol–formaldehyde (RF) framework to replace the classical micron-scale polymer framework. The three-dimensional (3D) nanoscale RF framework stacks into a 3D continuous mesoporous structure with a pore size of ∼ 30 nm and thereby results in intensive adsorbability toward polyethylene glycol, delivering an excellent antileakage property under long-term heat treatment up to 120 °C. The obtained CPCM possesses a thermal conductivity, latent heat and phase change temperature region of 1.26 W·m⁻¹·K⁻¹, 103.13 J·g⁻¹ and 35–60 °C, respectively. Consequently, superior temperature-control performances for the battery module can be obtained. Even at high discharge rates of 2 and 3C for 10 cycles, the maximum temperature and temperature difference can be maintained below 39.7 and 2.4 °C and 41.7 and 2.3 °C, respectively.

为了解决基于相变材料 (PCM) 的电池热管理 (BTM) 技术的泄漏问题，本文通过构建纳米级间苯二酚-甲醛 (RF) 框架来替代经典的微米级制备新型复合 PCM (CPCM)。聚合物骨架。三维（3D）纳米级射频框架堆叠成孔径约为 30 nm 的 3D 连续介孔结构，从而对聚乙二醇具有很强的吸附性，在高达 120° 的长期热处理下具有优异的抗渗漏性能C。得到的CPCM具有1.26 W·m ^-1 ·K ^-1、103.13 J·g ^{-1的热导率、潜热和相变温度范围}和35-60°C，分别。因此，可以获得电池模块的优异温度控制性能。即使在 2 和 3C 的高放电速率下进行 10 次循环，最高温度和温差也可以分别保持在 39.7 和 2.4°C 和 41.7 和 2.3°C 以下。