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Title: Synthesis-Microstructure-Performance Relationship of Layered Transition Metal Oxides as Cathode for Rechargeable Sodium Batteries Prepared by High-Temperature Calcination

Journal Article · · ACS Applied Materials and Interfaces
DOI:https://doi.org/10.1021/am5049114· OSTI ID:1247150
 [1];  [2];  [3];  [1];  [1];  [2];  [3];  [3];  [4];  [4];  [4];  [5]
  1. Beijing Inst. of Technology (China); National Development Center of High Technology Green Materials, Beijing (China)
  2. Beijing Inst. of Technology (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. King Abdulaziz Univ., Jeddah (Saudi Arabia)
  5. King Abdulaziz Univ., Jeddah (Saudi Arabia); Argonne National Lab. (ANL), Argonne, IL (United States)
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Research on sodium batteries has made a comeback because of concern regarding the limited resources and cost of lithium for Li-ion batteries. From the standpoint of electrochemistry and economics, Mn- or Fe-based layered transition metal oxides should be the most suitable cathode candidates for affordable sodium batteries. Herein, this paper reports a novel cathode material, layered Na1+x(Fey/2Niy/2Mn1–y)1–xO2 (x = 0.1–0.5), synthesized through a facile coprecipitation process combined with subsequent calcination. For such cathode material calcined at 800 °C for 20 h, the Na/Na1+x(Fey/2Niy/2Mn1–y)1–xO2 (x = 0.4) electrode exhibited a good capacity of 99.1 mAh g–1 (cycled at 1.5–4.0 V) and capacity retention over 87% after 50 cycles. Optimization of this material would make layered transition metal oxides a strong candidate for the Na-ion battery cathode.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1247150
Journal Information:
ACS Applied Materials and Interfaces, Vol. 6, Issue 19; ISSN 1944-8244
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
Na-ion batteries
calcination
cathode
layered structure
transition-metal oxide