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In-situ construction of carbon cloth-supported amorphous/crystalline hybrid NiCo-sulfide with permeable concrete-like morphology for high-performance solid-state hybrid supercapacitors
Chemical Engineering Journal ( IF 15.1 ) Pub Date : 2022-09-26 , DOI: 10.1016/j.cej.2022.139429
Xingchang Tang , Jingruo Wang , Deyi Zhang , Bing Wang , Xu Xia , Xianxin Meng , Biao Yang , Jianpeng Chen , Yulian He , Zhiyong Han

Constructing the amorphous/crystalline hybrid materials has been proved to be an effective strategy to boost the specific capacity, rate capability, and cycle durability of supercapacitors. Presently, the amorphous/crystalline hybrid materials are generally constructed by simply overlaying one amorphous material on or under another crystalline material. In this work, we successfully constructed carbon cloth-supported amorphous/crystalline hybrid NiCo-sulfide with a permeable concrete-like morphology (NiCo-sulfide@CCH) by in-suit partially converting the crystalline NiCo-sulfide into the amorphous phase in a specially-made quartz reactor. The obtained NiCo-sulfide@CCH material exhibits a high specific capacity of 250.16 mAh/g (1801.13F g−1 or 900.6C g−1) at 1 A/g, outstanding cycle stability, and good rate capability. The solid-state hybrid supercapacitor (SSHSC) device based on the prepared NiCo-sulfide@CCH material delivers high specific energy of 57.71 Wh kg−1 at a specific power of 1.56 kW kg−1 with remarkable specific energy retention of 97.9 % after 5000 cycles. The developed scheme is expected to promote the application of the amorphous/crystalline hybrid materials in high-performance supercapacitors.



中文翻译:

用于高性能固态混合超级电容器的碳布支撑的具有可渗透混凝土状形态的非晶/结晶混合镍钴硫化物的原位构建

构建非晶/晶体混合材料已被证明是提高超级电容器比容量、倍率性能和循环耐久性的有效策略。目前,无定形/结晶混合材料通常通过简单地将一种无定形材料覆盖在另一种结晶材料之上或之下来构造。在这项工作中,我们通过将结晶镍钴硫化物部分转化为无定形相,成功地构建了具有可渗透混凝土状形态的碳布支撑的非晶/结晶混合镍钴硫化物(NiCo-硫化物@CC H)。特制石英反应器。获得的 NiCo-硫化物@CC H材料具有 250.16 mAh/g (1801.13F g -1或 900.6C g ) 的高比容量-1 ) 在 1 A/g 时,出色的循环稳定性和良好的倍率性能。基于所制备的 NiCo-硫化物@CC H材料的固态混合超级电容器 (SSHSC) 器件在1.56 kW kg -1的比功率下提供 57.71 Wh kg -1的高比能量,并且经过显着的比能量保持率为 97.9 % 5000 次循环。所开发的方案有望促进非晶/晶混合材料在高性能超级电容器中的应用。

更新日期:2022-09-28
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