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Title: Water-Processable P2-Na0.67Ni0.22Cu0.11Mn0.56Ti0.11O2 Cathode Material for Sodium Ion Batteries

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0881902jes· OSTI ID:1503410
 [1];  [1];  [2];  [3];  [1];  [1];  [4];  [5];  [2];  [6]; ORCiD logo [1]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Tianjin Univ., Tianjin (People's Republic of China); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Neuqua Valley High School, Naperville, IL (United States)
  5. Tianjin Univ., Tianjin (People's Republic of China)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
+ Show Author Affiliations

Sodium ion batteries offer a low-cost, sustainable, and environment-friendly solution to large-scale electrochemical energy storage systems. Layered oxides represent a family of promising cathode materials with a potential to improve the energy and power densities while reducing the material cost of sodium ion batteries. However, due to the chemical and structural instability of layered oxides in an aqueous solution, the current battery electrode manufacturing requires expensive and hazardous organic solvents, which impedes the full benefit of the low-cost, sustainable, and eco-friendly advantages. We need an effective technology that empowers a cathode with water processable properties. In this study, we set a representative example, P2-Na0.67Ni0.22Cu0.11Mn0.56Ti0.11O2, to explore its performance under water-processing conditions. This material achieves a discharge capacity of 180 mAh/g and a discharge energy of 544 Wh/kg at 22 ?C. The aging experiments indicate its superior stability against water, having negligible bulk 2 structural or chemical changes. The surface sensitive soft X-ray absorption spectroscopy shows that the P2-Na0.67Ni0.22Cu0.11Mn0.56Ti0.11O2 has stable surface chemistry in the aqueous solution. Moreover, the cells with water-processed cathodes delivered stable cycling performance with minor voltage decay, originating from the decreased cell impedance. Therefore, the present study sets a refined example to establish a low-cost, sustainable, and eco-friendly solution by developing water-processable electrode materials for sodium ion batteries.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; AC05-76RL01830
OSTI ID:
1503410
Alternate ID(s):
OSTI ID: 1501529
Report Number(s):
PNNL-SA-140657
Journal Information:
Journal of the Electrochemical Society, Vol. 166, Issue 2; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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Cited By (2)

Reaching the Energy Density Limit of Layered O3‐NaNi 0.5 Mn 0.5 O 2 Electrodes via Dual Cu and Ti Substitution journal August 2019
Understanding Challenges of Cathode Materials for Sodium‐Ion Batteries using Synchrotron‐Based X‐Ray Absorption Spectroscopy journal July 2019

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Related Subjects

25 ENERGY STORAGE
batteries
layered oxide
structural stability
water-processable
water-processable
substitution
layered oxide
structural stability
sodium battery