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Title: Sea urchin-likeNiCoO2@C nanocompositesforLi-ionbatteries and supercapacitors

Abstract

The rational construction of battery electrode architecture that offers both high energy and power densities on a gravimetric and volumetric basis is a critical concern but achieving this aim is beset by many fundamental and practical challenges. Here we report a new sea urchin-like NiCoO2@C composite electrode architecture composed of NiCoO2 nanosheets grown on hollow concave carbon disks. Such a unique structural design not only preserves all the advantages of hollow structures but also increases the packing density of the active materials. NiCoO2 nanosheets grown on carbon disks promote a high utilization of active materials in redox reactions by reducing the path length for Li+ ions and for electron transfer. Meanwhile, the hollow concave carbon not only reduces the volume change, but also improves the volumetric energy density of the entire composite electrode. As a result, the nanocomposites exhibit superior electrochemical performance measured in terms of high capacity/capacitance, stable cycling performance and good rate capability in both Li-ion battery and supercapacitor applications. Such nanostructured composite electrode may also have great potential for application in other electrochemical devices.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Ministry of Education of the People's Republic of China - New Century Excellent Talents In University Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1332125
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Energy; Journal Volume: 27
Country of Publication:
United States
Language:
English
Subject:
Electrochemistry; Hollow concave carbon; Lithium ion battery; NiCoO2; Supercapacitor

Citation Formats

Liang, Jin, Xi, Kai, Tan, Guoqiang, Chen, Sheng, Zhao, Teng, Coxon, Paul R., Kim, Hyun-Kyung, Ding, Shujiang, Yang, Yuan, Kumar, R. Vasant, and Lu, Jun. Sea urchin-likeNiCoO2@C nanocompositesforLi-ionbatteries and supercapacitors. United States: N. p., 2016. Web. doi:10.1016/j.nanoen.2016.06.032.
Liang, Jin, Xi, Kai, Tan, Guoqiang, Chen, Sheng, Zhao, Teng, Coxon, Paul R., Kim, Hyun-Kyung, Ding, Shujiang, Yang, Yuan, Kumar, R. Vasant, & Lu, Jun. Sea urchin-likeNiCoO2@C nanocompositesforLi-ionbatteries and supercapacitors. United States. doi:10.1016/j.nanoen.2016.06.032.
Liang, Jin, Xi, Kai, Tan, Guoqiang, Chen, Sheng, Zhao, Teng, Coxon, Paul R., Kim, Hyun-Kyung, Ding, Shujiang, Yang, Yuan, Kumar, R. Vasant, and Lu, Jun. 2016. "Sea urchin-likeNiCoO2@C nanocompositesforLi-ionbatteries and supercapacitors". United States. doi:10.1016/j.nanoen.2016.06.032.
@article{osti_1332125,
title = {Sea urchin-likeNiCoO2@C nanocompositesforLi-ionbatteries and supercapacitors},
author = {Liang, Jin and Xi, Kai and Tan, Guoqiang and Chen, Sheng and Zhao, Teng and Coxon, Paul R. and Kim, Hyun-Kyung and Ding, Shujiang and Yang, Yuan and Kumar, R. Vasant and Lu, Jun},
abstractNote = {The rational construction of battery electrode architecture that offers both high energy and power densities on a gravimetric and volumetric basis is a critical concern but achieving this aim is beset by many fundamental and practical challenges. Here we report a new sea urchin-like NiCoO2@C composite electrode architecture composed of NiCoO2 nanosheets grown on hollow concave carbon disks. Such a unique structural design not only preserves all the advantages of hollow structures but also increases the packing density of the active materials. NiCoO2 nanosheets grown on carbon disks promote a high utilization of active materials in redox reactions by reducing the path length for Li+ ions and for electron transfer. Meanwhile, the hollow concave carbon not only reduces the volume change, but also improves the volumetric energy density of the entire composite electrode. As a result, the nanocomposites exhibit superior electrochemical performance measured in terms of high capacity/capacitance, stable cycling performance and good rate capability in both Li-ion battery and supercapacitor applications. Such nanostructured composite electrode may also have great potential for application in other electrochemical devices.},
doi = {10.1016/j.nanoen.2016.06.032},
journal = {Nano Energy},
number = ,
volume = 27,
place = {United States},
year = 2016,
month = 9
}