Affiliation:
1. Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Engineering Research Centre of Electrochemical Technologies of Ministry of Education Xiamen University Xiamen 361005 P. R. China
Abstract
AbstractAs a holy grail in electrochemistry, both high‐power and high‐energy electrochemical energy storage system (EES) has always been a pursued dream. To simultaneously achieve the “both‐high” EES, a rational design of structure and composition for storage materials with characteristics of battery‐type and capacitor‐type storage is crucial. Herein, fluorine‐nitrogen co‐implanted carbon tubes (FNCT) have been designed, in which plentiful active sites and expanded interlayer space have been created benefiting from the heteroatom engineering and the fluorine‐nitrogen synergistic effect, thus the above two‐type storage mechanism can get an optimal balance in the FNCT. The implanted fluorine heteroatoms can not only amplify interlayer spacing, but also induce the transformation of nitrogen configuration from pyrrole nitrogen to pyridine nitrogen, further promoting the activity of the carbon matrix. The extraordinary electrochemical performance as results can be witnessed for FNCT, which exhibit fast lithium‐ion storage capability with a high energy density of 119.4 Wh kg−1 at an ultrahigh power density of 107.5 kW kg−1.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
2 articles.
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