Mesh-like vertical structures enable both high areal capacity and excellent rate capability

查看全文 作　　者：Ruyi [1,2]Chen;Jialu [2]Xue;Yujiao [2]Gong;Chenyang [2]Yu;Zengyu [2]Hui;Hai [2]Xu;Yue [2]Sun;Xi [2]Zhao;Jianing [4]An;Jinyuan [5]Zhou;Qiang [1]Chen;Gengzhi [1,2]Sun;Wei [2,3]Huang

机构地区：[1]School of Materials Science and Engineering.Henan Polytechnic University,Jiaozuo 454003,Henan,China;[2]Institute of Advanced Materials(IAM),Nanjing Tech University(NanjingTech),Nanjing 211816,Jiangsu,China;[3]Institute of Flexible Electronics(IFE),Northwestern Polytechnical University(NPU),Xi'an 710072,Shaanxi,China;[4]Institute of Photonics Technology.Jinan University,Guangzhou 510632,Guangdong,China;[5]School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,Gansu,China

出　　处：《Journal of Energy Chemistry》索引2021年第30卷第2期,共9页

基　　金：supported by the National Natural Science Foundation of China (Nos. 21975123, 61704076);the Natural Science Basic Research Program of Shaanxi (No. 2020JM-092);the Natural Science Foundation of Jiangsu Province (No. BK20171018);the Six Talent Peaks Project in Jiangsu Province (No. XCL-024);the Fundamental Research Funds for the Central Universities。 摘　　要：In order to balance electrochemical kinetics with loading level for achieving efficient energy storage with high areal capacity and good rate capability simultaneously for wearable electronics,herein,2 D meshlike vertical structures(NiCo_2 S_4@Ni(OH)_2) with a high mass loading of 2.17 mg cm^(-2) and combined merits of both 1 D nanowires and 2 D nanosheets are designed for fabricating flexible hybrid supercapacitors.Particularly,the seamlessly interconnected NiCo_2 S_4 core not only provides high capacity of 287.5 μAh cm^(-2) but also functions as conductive skeleton for fast electron transport;Ni(OH)_2 sheath occupying the voids in NiCo_2 S_4 meshes contributes extra capacity of 248.4 μAh cm^(-2);the holey features guarantee rapid ion diffusion along and across NiCO_2 S_4@Ni(OH)_2 meshes.The resultant flexible electrode exhibits a high areal capacity of 535.9 μAh cm^(-2)(246.9 mAh g^(-1)) at 3 mA cm^(-2) and outstanding rate performance with 84.7% retention at 30 mA cm^(-2),suggesting efficient utilization of both NiCo_2 S_4 and Ni(OH)_2 with specific capacities approaching to their theoretical values.The flexible solid-state hybrid device based on NiCo_2 S_4@Ni(OH)_2 cathode and Fe_2 O_3 anode delivers a high energy density of 315 μWh cm^(-2) at the power density of 2.14 mW cm^(-2) with excellent electrochemical cycling stability. 关键词：Mesh-like structure Ultrahigh areal capacity Excellent rate capability Hybrid supercapacitors Wearable energy storage

相关文献

参考文献（63）
引证文献（1）
耦合文献（9）

参考文献(63)

引证文献(1)

耦合文献(9)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Mesh-like vertical structures enable both high areal capacity and excellent rate capability

参考文献(63)

引证文献(1)

耦合文献(9)

用户提示