Atomic-level energy storage mechanism of cobalt hydroxide electrode for pseudocapacitors View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2017-05-08

AUTHORS

Ting Deng, Wei Zhang, Oier Arcelus, Jin-Gyu Kim, Javier Carrasco, Seung Jo Yoo, Weitao Zheng, Jiafu Wang, Hongwei Tian, Hengbin Zhang, Xiaoqiang Cui, Teófilo Rojo

ABSTRACT

Cobalt hydroxide is a promising electrode material for supercapacitors due to the high capacitance and long cyclability. However, the energy storage/conversion mechanism of cobalt hydroxide is still vague at the atomic level. Here we shed light on how cobalt hydroxide functions as a supercapacitor electrode at operando conditions. We find that the high specific capacitance and long cycling life of cobalt hydroxide involve a complete modification of the electrode morphology, which is usually believed to be unfavourable but in fact has little influence on the performance. The conversion during the charge/discharge process is free of any massive structural evolution, but with some tiny shuffling or adjustments of atom/ion species. The results not only unravel that the potential of supercapacitors could heavily rely on the underlying structural similarities of switching phases but also pave the way for future material design for supercapacitors, batteries and hybrid devices. More... »

PAGES

15194

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/ncomms15194

DOI

http://dx.doi.org/10.1038/ncomms15194

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1085213865

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/28480885


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284 https://www.grid.ac/institutes/grid.64924.3d schema:alternateName Jilin University
285 schema:name Department of Materials Science, Jilin University, Changchun 130012, China
286 Key Laboratory of Mobile Materials MOE, Jilin University, Changchun 130012, China
287 State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
288 rdf:type schema:Organization
 




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