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Title: Trifunctional Electrode Additive for High Active Material Content and Volumetric Lithium-Ion Electrode Densities

Journal Article · · Advanced Energy Materials
 [1];  [2];  [3];  [4];  [5];  [6];  [3]; ORCiD logo [7]
  1. Guangdong Univ. of Technology, Guangzhou (China); Harbin Inst. of Technology (China)
  2. Beijing Computational Science Research Centre, (China)
  3. Harbin Inst. of Technology (China)
  4. Beijing Computational Science Research Centre, Beijing 100193 China
  5. Griffith Univ., Brisbane, QLD (Australia)
  6. Guangdong Univ. of Technology, Guangzhou (China)
  7. Argonne National Lab. (ANL), Lemont, IL (United States)
+ Show Author Affiliations

The use of electrode additives such as binder and conductive additive (CA) in addition to high pore volume for electrolytes, results in reduced volumetric energy densities of all battery electrodes. Here, it is proposed to use poly(furfuryl alcohol) (PFA) conductive resin as a trifunctional electrode additive to replace polyvinylidene fluoride (PVDF) and CA while simultaneously enabling low porosity electrode function. The resultant PFA binder has a long-range ordered structure of conjugated diene, which allow electronic conductivity that leads to a CA-free electrode fabrication process. The oxygen heteroatoms in the PFA structure reduce the diffusion barriers of lithium ions, lowers the amount of required electrolyte/pore volume and thus, increasing electrode density. Serving as a trifunctional electrode additive, a high electrode density of 2.65 g cm-3 of the LiFePO4 (LFP) electrode and therefore the highest volumetric energy density of 1551 Wh L-1 so far. The LFP electrode using PFA binder can achieve a capacity retention of ≈ 80% and Coulombic efficiency of over 99.9% after cycling for 500 times. The presented in situ polymerization strategy could revolutionize the electrode process, with the advantages of being simple, environmentally friendly, and easily scalable to industrial applications.

Research Organization:
Argonne National Lab. (ANL), Lemont, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-V3); National Natural Science Foundation of China (NSFC); Australian Research Council; Griffith University; National Key Research and Development Program of China
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1529501
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 10 Vol. 9; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Sulfuryl chloride as a functional additive towards dendrite-free and long-life Li metal anodes journal January 2019

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Related Subjects

25 ENERGY STORAGE
LiFePO4
furfuryl alcohol
in situ polymerization binder
lithium ion batteries
volumetric energy density