Sha Shiyu, Liang Chang, Lv Songyang, Xu Lin, Sun Defu, Yang Jiayue, Zhang Lei, Wang Shouzhi
School of Energy and Power Engineering, Shandong University, Jinan 250100, China.
State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, China.
Materials (Basel). 2024 Aug 22;17(16):4161. doi: 10.3390/ma17164161.
Silicon carbide (SiC) single crystals have great prospects for high-temperature energy storage due to their robust structural stability, ultrahigh power output, and superior temperature stability. However, energy density is an essential challenge for SiC-based devices. Herein, a facile two-step strategy is proposed for the large-scale synthesis of a unique architecture of SiC nanowires incorporating MnO for enhanced supercapacitors (SCs), arising from the synergy effect between the SiC nanowires as a highly conductive skeleton and the MnO with numerous active sites. The SiC@MnO integrated electrode-based SCs with ionic liquid (IL) electrolytes were assembled and delivered outstanding energy and power density, as well as a great lifespan at 150 °C. This impressive work offers a novel avenue for the practical application of SiC-based electrochemical energy storage devices with high energy density under high temperatures.
碳化硅（SiC）单晶因其坚固的结构稳定性、超高的功率输出和卓越的温度稳定性，在高温能量存储方面具有广阔的前景。然而，能量密度是基于SiC的器件面临的一项关键挑战。在此，我们提出了一种简便的两步策略，用于大规模合成一种独特结构的、结合了MnO的SiC纳米线，以增强超级电容器（SCs）的性能，这源于作为高导电骨架的SiC纳米线与具有众多活性位点的MnO之间的协同效应。采用离子液体（IL）电解质组装了基于SiC@MnO集成电极的SCs，其在150°C下具有出色的能量和功率密度以及长寿命。这项令人瞩目的工作为高温下具有高能量密度的SiC基电化学储能器件的实际应用提供了一条新途径。
