A heterogeneous FeP-CoP electrocatalyst for expediting sulfur redox in high-specific-energy lithium-sulfur batteries

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922174" target="_blank" >RIV/60461373:22310/21:43922174 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0013468621015656" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468621015656</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2021.139275" target="_blank" >10.1016/j.electacta.2021.139275</a>

Result language

angličtina

Original language name

A heterogeneous FeP-CoP electrocatalyst for expediting sulfur redox in high-specific-energy lithium-sulfur batteries

Original language description

Lithium-sulfur batteries (LSBs) with high theoretical energy density and low cost have become one of the competitive candidates for next-generation energy storage devices. Nevertheless, the shuttle effect of polysulfide leads to rapid capacity decay and hinders the practical application of LSBs. Herein, a composite of heterogeneous bimetallic phosphide and graphene oxide (FeP-CoP/GO) is devised as a high efficiency catalyst. FeP-CoP not only promotes the deposition of Li2S to improve the utilization of sulfur, but also offers adequate active sites for anchoring and catalyzing the transformation of polysulfide to restrain the shuttle effect. And GO plays a role of auxiliary enhancement because of its big specific surface area and good conductivity. Therefore, FeP-CoP/GO/S with 79 wt.% sulfur content exhibits a high discharge capacity of 773 mAh g(-1) at 0.5 C and displays favorable cycle stability of 481 mAh g(-1) after 300 cycles with high coulombic efficiency of 96.6%. Bimetal phosphides as the catalyst offer a new perspective for high-specific-energy Li-S batteries. (C) 2021 Elsevier Ltd. All rights reserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Electrochimica Acta

ISSN

0013-4686

e-ISSN

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Volume of the periodical

397

Issue of the periodical within the volume

20 November 2021

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

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UT code for WoS article

000706846000007

EID of the result in the Scopus database

2-s2.0-85115754409