A Model of Dual Fabry-Perot Etalon-Based External-Cavity Tunable Laser Us...
Internal motion within pulsating pure-quartic soliton molecules in a fibe...
Enhanced light emission of germanium light-emitting-diode on 150 mm germa...
The Fabrication of GaN Nanostructures Using Cost-Effective Methods for Ap...
Negative-to-Positive Tunnel Magnetoresistance in van der Waals Fe3GeTe2/C...
Quantum Light Source Based on Semiconductor Quantum Dots: A Review
A High-Reliability RF MEMS Metal-Contact Switch Based on Al-Sc Alloy
Development of a Mode-Locked Fiber Laser Utilizing a Niobium Diselenide S...
Development of Multiple Fano-Resonance-Based All-Dielectric Metastructure...
Traffic Vibration Signal Analysis of DAS Fiber Optic Cables with Differen...
官方微信
友情链接

Ti3C2Tx MXene Conductive Layers Supported Bio-Derived Fex-1Sex/MXene/Carbonaceous Nanoribbons for High-Performance Half/Full Sodium-Ion and Potassium-Ion Batteries

2021-08-16

 

Author(s): Cao, Junming; Wang, Lili; Li, Dongdong; Yuan, Zeyu; Xu, Hao; Li, Junzhi; Chen, Ruoyu; Shulga, Valerii; Shen, Guozhen; Han, Wei

Source: ADVANCED MATERIALS Article Number: 2101535 DOI: 10.1002/adma.202101535 Published:

Abstract: Owing to their cost-effectiveness and high energy density, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are becoming the leading candidates for the next-generation energy-storage devices replacing lithium-ion batteries. In this work, a novel Fex-1Sex heterostructure is prepared on fungus-derived carbon matrix encapsulated by 2D Ti3C2Tx MXene highly conductive layers, which exhibits high specific sodium ion (Na+) and potassium ion (K+) storage capacities of 610.9 and 449.3 mAh g(-1) at a current density of 0.1 A g(-1), respectively, and excellent capacity retention at high charge-discharge rates. MXene acts as conductive layers to prevent the restacking and aggregation of Fex-1Sex sheets on fungus-derived carbonaceous nanoribbons, while the natural fungus functions as natural nitrogen/carbon source to provide bionic nanofiber network structural skeleton, providing additional accessible pathways for the high-rate ion transport and satisfying surface-driven contribution ratios at high sweep rates for both Na/K ions storages. In addition, in situ synchrotron diffraction and ex situ X-ray photoelectron spectroscopy measurements are performed to reveal the mechanisms of storage and de-/alloying conversion process of Na+ in the Fex-1Sex/MXene/carbonaceous nanoribbon heterostructure. As a result, the assembled Na/K full cells containing MXene-supported Fex-1Sex@carbonaceous anodes possess stable large-ion storage capabilities.

Accession Number: WOS:000674497600001

ISSN: 0935-9648

eISSN: 1521-4095

Full Text: https://onlinelibrary.wiley.com/doi/10.1002/adma.202101535



关于我们
下载视频观看
联系方式
通信地址

北京市海淀区清华东路甲35号(林大北路中段) 北京912信箱 (100083)

电话

010-82304210/010-82305052(传真)

E-mail

semi@semi.ac.cn

交通地图
版权所有 中国科学院半导体研究所

备案号:京ICP备05085259-1号 京公网安备110402500052 中国科学院半导体所声明