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

Abstract

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 LiFePO 4 (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.

Authors:
 [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)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-V3); National Natural Science Foundation of China (NNSFC); Australian Research Council; Griffith University; National Key Research and Development Program of China; USDOE
OSTI Identifier:
1529501
Alternate Identifier(s):
OSTI ID: 1492090
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 9; Journal Issue: 10; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
LiFePO4; furfuryl alcohol; in situ polymerization binder; lithium ion batteries; volumetric energy density

Citation Formats

Liu, Tiefeng, Tong, Chuan-Jia, Wang, Bo, Liu, Li-Min, Zhang, Shanqing, Lin, Zhan, Wang, Dianlong, and Lu, Jun. Trifunctional Electrode Additive for High Active Material Content and Volumetric Lithium-Ion Electrode Densities. United States: N. p., 2019. Web. doi:10.1002/aenm.201803390.
Liu, Tiefeng, Tong, Chuan-Jia, Wang, Bo, Liu, Li-Min, Zhang, Shanqing, Lin, Zhan, Wang, Dianlong, & Lu, Jun. Trifunctional Electrode Additive for High Active Material Content and Volumetric Lithium-Ion Electrode Densities. United States. doi:10.1002/aenm.201803390.
Liu, Tiefeng, Tong, Chuan-Jia, Wang, Bo, Liu, Li-Min, Zhang, Shanqing, Lin, Zhan, Wang, Dianlong, and Lu, Jun. Thu . "Trifunctional Electrode Additive for High Active Material Content and Volumetric Lithium-Ion Electrode Densities". United States. doi:10.1002/aenm.201803390.
@article{osti_1529501,
title = {Trifunctional Electrode Additive for High Active Material Content and Volumetric Lithium-Ion Electrode Densities},
author = {Liu, Tiefeng and Tong, Chuan-Jia and Wang, Bo and Liu, Li-Min and Zhang, Shanqing and Lin, Zhan and Wang, Dianlong and Lu, Jun},
abstractNote = {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.},
doi = {10.1002/aenm.201803390},
journal = {Advanced Energy Materials},
number = 10,
volume = 9,
place = {United States},
year = {2019},
month = {1}
}

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