Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 14, Issue 10, Pages 7943-7947Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2014.9458
Keywords
Lithium Battery; NiS; Co-Precipitation Method; Nickel Sulfide; Metal Sulfide
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Funding
- National Research Foundation of Korea (NRF) by the Ministry of Education (MOE) [2012R1A1A2007143, 2012R1A2A2A02015831, 2013R1A2A1A01015911]
- Ministry of Science, ICT and Future Planning (MSIP)
- National Research Foundation of Korea [2012R1A1A2007143, 2013R1A2A1A01015911, 2012R1A2A2A02015831] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We synthesized two nickel sulfide powders by simple method. One is nickel sulfide powder (CNS) by co-precipitation is composed of nano-sized nickel sulfides as NiS and NiS2. The other is nickel sulfide powder (HNS) by heat-treatment of CNS is composed nano-sized NiS. The electrode using CNS has a high first discharge capacity of 600 mA h g(-1) at 0.5 C and the discharge capacity after 20th cycle is 312 mA h g(-1). The electrode using HNS has a high first discharge capacity of 551 mA h g(-1) at 0.5 C and has the discharge capacity of 412 mA h g(-1) after 50th. The discharge rate capability has over 92% at 1 C versus 0.2 C. The nano-sized nickel sulfides are synthesized by simple co-precipitation method has good electrochemical properties such as high first discharge capacity, good cycle life and good rate capability for lithium secondary battery.
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