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Title: Electrochemical properties of monolithic nickel sulfide electrodes for use in sodium batteries

Highlights: • We succeeded in preparing monolithic Ni{sub 3}S{sub 2} integrated electrode through the sulfuration. • The sulfuration is a facile and useful method to synthesize metal sulfides with nanostructure. • As-prepared monolithic Ni{sub 3}S{sub 2} electrodes showed very stable and cycle performance over charge/discharge cycling. - Abstract: Monolithic nickel sulfide electrodes were prepared using a facile synthesis method, sulfuration and annealing. As-prepared Ni{sub 3}S{sub 2} electrodes were characterized by X-ray diffractometry and field emission scanning electron microscopy. Thermal stability was determined by thermal gravimetric analysis and differential scanning calorimetry. Electrochemical properties were measured by galvanostatic charge and discharge cycling for Na-ion batteries. Three kinds of Ni{sub 3}S{sub 2} electrodes were prepared by varying the sulfuration time (5, 15 and 25 min). The electrochemical results indicated that the capacities increased with an increase in sulfuration time and the cycle performance was stable as a result of monolithic integration of nanostructured Ni{sub 3}S{sub 2} on Ni plates, leading to low interfacial resistance.
Authors:
 [1] ;  [2] ; ; ; ; ;  [1] ;  [1]
  1. Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-Daero, Jinju, Gyeongnam 660-701 (Korea, Republic of)
  2. Department of Materials and Energy Engineering, Kyungwoon University, 730 Gangdong-ro, Sandong-meon, Gumi-si, Gyeongbuk 730-739 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22420591
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 58; Conference: IFFM2013: International forum on functional materials, Jeju City (Korea, Republic of), 27-29 Jun 2013; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CALORIMETRY; CAPACITY; ELECTROCHEMISTRY; ELECTRODES; ENERGY STORAGE; FIELD EMISSION; NANOSTRUCTURES; NICKEL SULFIDES; PHASE STABILITY; PLATES; SCANNING ELECTRON MICROSCOPY; SODIUM; SODIUM IONS; SYNTHESIS; THERMAL GRAVIMETRIC ANALYSIS; THIN FILMS; X-RAY DIFFRACTION