文献类型：期刊文献

英文题名：Boosting Specific Capacity for Supercapattery by In Situ Formation of Amorphous Ni-Co-Borate on MOF-Derived Ni-Co-LDH Nanosheet Array

作者：Zhou, Jiao-Jiao[1,2];Li, Kuang[1];Wang, Weiwei[1];Lei, Yuchen[1];Wu, Jing[1];Zhou, Chencheng[1];Zhang, Peilin[1];Liu, Jinzhe[1];Hua, Zile[2];Chen, Luyang[1];Han, Lei[3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;[3]Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China

年份：2020

卷号：3

期号：12

起止页码：12046

外文期刊名：ACS APPLIED ENERGY MATERIALS

收录：;EI(收录号：20210209748251);WOS:【SCI-EXPANDED(收录号:WOS:000618839200060)】；

基金：This work was supported by the National Natural Science Foundation of China (51502092 and 21971131), the Fundamental Research Funds for the Central Universities (222201718002), the Thousand Talents Program Young Project in China, and the Program for Eastern Scholar at Shanghai Institutions of Higher Learning (TP2015028).

语种：英文

外文关键词：supercapattery; layered double hydroxides; metal-organic frameworks; borate; surface amorphization

摘要：Amorphous materials have great potential for storing energy owing to their porous structure, high stability, and fast charging rate. Also, ingeniously incorporating amorphous materials into crystalline materials through surface amorphization strategy can construct excellent electrodes for super-capattery. Herein, Ni-Co-layered double hydroxide/Ni-Co-borate (Ni-Co-LDH/Ni-Co-B-i) composite is synthesized by in situ formation of amorphous Ni-Co-borate on metal-organic frameworks (MOFs)-derived Ni-Co-LDH nanosheet array. The adherent amorphous Ni-Co-borate can modulate the crystalline and electronic structures of Ni-Co-LDH, which provide an effective path for electron transfer and boosts the kinetics of redox reaction. Consequently, the crystalline/amorphous Ni-Co-LDH/Ni-Co-B-i composite shows a high specific capacity of 891 C/g at 1 A/g. When used as a battery-type electrode to assemble supercapattery, it displays a maximum energy density of 62.8 Wh/kg at a power density of 800 W/kg and fine stability (similar to 81% capacity retention after 5000 cycles). In addition, an all-solid-state supercapattery can lighten a white light-emitting diode (LED) for 60 s, demonstrating potential practical applications of Ni-Co-LDH/Ni-Co-B-i. Hence, it is a very promising study to shed substantial light on inspiring crystalline/amorphous materials for energy storage.