Here, we propose a new strategy that employs a functional separator composed of radical scavenging agents for removal of radical species in the cell. In detail, a radical scavenger, trimesitylborane (TRMSB), is embedded on the surface of nano-sized tungsten oxide (WO₃) by a simple one-step process and the resulting nanoparticles are coated onto conventional separators by a dip-coating process. Our screening test performed by chemical reaction of TRMSB with a radical indicator (2,2-diphenyl-1-picrylhydrazyl, DPPH) confirms that TRMSB effectively scavenges radical species via a chemical reaction, implying that the use of a WO₃-TRMSB–functionalized separator would be effective for decreasing radical concentrations during electrochemical processes. In our electrochemical tests, the cell cycled with a WO₃-TRMSB–functionalized separator exhibit showed both improved cycling retention compared to a cell cycled with a bare separator and improved physical and mechanical properties.

在这里，我们提出了一种新策略，该策略采用由自由基清除剂组成的功能性分离器，用于去除细胞中的自由基物种。具体而言，通过简单的一步法将自由基清除剂三甲基硼烷 (TRMSB) 嵌入纳米级氧化钨 (WO ₃ ) 的表面，然后通过浸涂工艺将所得纳米颗粒涂覆到常规隔膜上。我们通过 TRMSB 与自由基指示剂 (2,2-diphenyl-1-picrylhydrazyl, DPPH) 的化学反应进行的筛选测试证实 TRMSB 通过化学反应有效清除自由基物质，这意味着使用 WO ₃-TRMSB 功能化隔膜可有效降低电化学过程中的自由基浓度。在我们的电化学测试中，使用 WO ₃ -TRMSB 功能化隔板循环的电池与使用裸隔板循环的电池相比，表现出更高的循环保持率和改进的物理和机械性能。