Novel bouquet-like cobalt phosphate as an ultrahigh-rate and durable battery-type cathode material for hybrid supercapacitors
Source abstract
Abstract
红磷由于资源丰富、 化学稳定性好、 环境友好等优点有利于工业化. 然而, 低的电子导电性和大的体积膨胀限制了其在储能方面的应用. 本工作首次以红磷作为磷源, 利用一步水热法制备了一种新型的花束状Co3(HPO4)2(OH)2, 将其作为混合超级电容器的正极材料时展现出大的比容量(在1 A g−1时的比容量为119.2 mA h g−1)、 极好的倍率性能(在100 A g−1时的比容量为83.6 mA h g−1)和出色的电化学稳定性(在10 A g−1下5000次循环后的容量保持率为92%). 此外, 以Co3(HPO4)2-(OH)2作为正极和多孔碳作为负极组装出的新型混合超级电容器表现出高达44.6 W h kg−1的能量密度和高达33.75 kW kg−1的功率密度, 以及出色的循环性能(在3 A g−1下10,000次循环后的容量保持率为91.8%). 该研究不仅开发了一种新型高性能的电池型正极材料, 而且为红磷在储能领域的商业化应用提供了新的思路.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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