Sulfur-rich CuS1+x cathode for lithium batteries

Gulnur Kalimuldina; Izumi Taniguchi

doi:10.1016/j.matlet.2020.128705

Sulfur-rich CuS_1+x cathode for lithium batteries

Gulnur Kalimuldina
, Izumi Taniguchi

Department of Chemical Science and Engineering
Tokyo Institute of Technology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Copper sulfide is one of the promising cathode materials for the next-generation secondary batteries due to its high electrical conductivity and relatively high capacity. The outstanding cycling performance of sulfur-rich CuS_1+x (0.58 ≤ x ≤ 0.61) cathode material obtained by one-step spray pyrolysis was demonstrated in this work. A simple approach of increasing the sulfur content up to CuS_1.58 achieved ~900 mAh g⁻¹ for 20 cycles at 0.1C. Furthermore, a small addition of carbon (5 wt%) by wet ball milling extremely enhanced discharge capacity to 1200 mAh g⁻¹.

Original language	English
Article number	128705
Journal	Materials Letters
Volume	282
DOIs	https://doi.org/10.1016/j.matlet.2020.128705
Publication status	Published - Jan 1 2021

Funding

This research was partially supported by the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant No. 15H04251 ).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being
SDG 7 Affordable and Clean Energy

Keywords

Copper sulfide
Energy storage and conversion
Lithium-ion battery
Spray pyrolysis
Sulfur

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2020.128705

Cite this

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title = "Sulfur-rich CuS1+x cathode for lithium batteries",

abstract = "Copper sulfide is one of the promising cathode materials for the next-generation secondary batteries due to its high electrical conductivity and relatively high capacity. The outstanding cycling performance of sulfur-rich CuS1+x (0.58 ≤ x ≤ 0.61) cathode material obtained by one-step spray pyrolysis was demonstrated in this work. A simple approach of increasing the sulfur content up to CuS1.58 achieved \textasciitilde{}900 mAh g−1 for 20 cycles at 0.1C. Furthermore, a small addition of carbon (5 wt\%) by wet ball milling extremely enhanced discharge capacity to 1200 mAh g−1.",

keywords = "Copper sulfide, Energy storage and conversion, Lithium-ion battery, Spray pyrolysis, Sulfur",

author = "Gulnur Kalimuldina and Izumi Taniguchi",

note = "Funding Information: This research was partially supported by the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant No. 15H04251 ). Publisher Copyright: {\textcopyright} 2020",

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AU - Taniguchi, Izumi

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N2 - Copper sulfide is one of the promising cathode materials for the next-generation secondary batteries due to its high electrical conductivity and relatively high capacity. The outstanding cycling performance of sulfur-rich CuS1+x (0.58 ≤ x ≤ 0.61) cathode material obtained by one-step spray pyrolysis was demonstrated in this work. A simple approach of increasing the sulfur content up to CuS1.58 achieved ~900 mAh g−1 for 20 cycles at 0.1C. Furthermore, a small addition of carbon (5 wt%) by wet ball milling extremely enhanced discharge capacity to 1200 mAh g−1.

AB - Copper sulfide is one of the promising cathode materials for the next-generation secondary batteries due to its high electrical conductivity and relatively high capacity. The outstanding cycling performance of sulfur-rich CuS1+x (0.58 ≤ x ≤ 0.61) cathode material obtained by one-step spray pyrolysis was demonstrated in this work. A simple approach of increasing the sulfur content up to CuS1.58 achieved ~900 mAh g−1 for 20 cycles at 0.1C. Furthermore, a small addition of carbon (5 wt%) by wet ball milling extremely enhanced discharge capacity to 1200 mAh g−1.

KW - Copper sulfide

KW - Energy storage and conversion

KW - Lithium-ion battery

KW - Spray pyrolysis

KW - Sulfur

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