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An effective and compact thermal management system is essential for modern lithium-ion (Li-ion) battery powered vehicles, which involve rigorous constraints on weight and volume. In this paper, a phase change material (PCM) based battery internal cooling system is proposed by replacing the hollow mandrel in cylindrical battery with a PCM-filled mandrel, and it is tested on a fabricated steel cell...
Exploring non Pt-based catalysts with high ORR performance still remains a great challenge in the development of energy conversion and storage devices. The aim of this study is preparing a novel ORR catalyst (Sm2O3 embedded in nitrogen doped carbon by calcination processes, named as Sm2O3-CN-1100) to substitute Pt catalysts. And the results of this study show that Sm2O3-CN-1100 displays good electrocatalytic...
Li-ion batteries are the state-of-the-art power sources for portable electronics, electric vehicles, and aerospace applications. The safety issues regarding Li-ion batteries arouse particular attentions after several accidents reported in recent years. Among various abuse conditions, nail penetration is one of the most dangerous for Li-ion batteries due to the accumulated heat generation, which could...
An appropriate operating temperature range is critical for the overall performance and safety of lithium-ion batteries. Considering the excellent performance of water in heat dissipation in industrial applications, in this paper, a water based PAAS (sodium polyacrylate) hydrogel thermal management system has been proposed to handle the heat surge during the operation of a Li-ion battery pack. A thermal...
In this study, a test system for spray cooling, in which the heating surface temperatures were simultaneously measured by thermocouples and an infrared imager, was set up. A mathematical model of spray cooling heat transfer characteristics was presented based on the fundamentals of dynamics and heat transfer. The temperature distribution on the heating surface was investigated by the experimental...
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