skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Designing a hybrid electrode toward high energy density with a staged Li+ and PF6- deintercalation/intercalation mechanism

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [1]; ORCiD logo [1];  [1];  [2];  [1];  [3];  [4];  [1];  [3];  [4];  [5]
  1. Univ. of Wollongong, NSW (Australia)
  2. Univ. of Wollongong, NSW (Australia); Fudan Univ., Shanghai (China)
  3. Univ. of Wollongong, NSW (Australia); Australian Nuclear Science and Technology Organisation (ANSTO), Kirrawee, NSW (Australia)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Univ. of Wollongong, NSW (Australia); Zhengzhou Univ. (China)

Existing lithium-ion battery technology is struggling to meet our increasing requirements for high energy density, long lifetime, and low-cost energy storage. Here, a hybrid electrode design is developed by a straightforward reengineering of commercial electrode materials, which has revolutionized the “rocking chair” mechanism by unlocking the role of anions in the electrolyte. Our proof-of-concept hybrid LiFePO4(LFP)/graphite electrode works with a staged deintercalation/intercalation mechanism of Li+cations and PF6-anions in a broadened voltage range, which was thoroughly studied byex situX-ray diffraction,ex situRaman spectroscopy, andoperandoneutron powder diffraction. Introducing graphite into the hybrid electrode accelerates its conductivity, facilitating the rapid extraction/insertion of Li+from/into the LFP phase in 2.5 to 4.0 V. This charge/discharge process, in turn, triggers the in situ formation of the cathode/electrolyte interphase (CEI) layer, reinforcing the structural integrity of the whole electrode at high voltage. Consequently, this hybrid LFP/graphite-20% electrode displays a high capacity and long-term cycling stability over 3,500 cycles at 10 C, superior to LFP and graphite cathodes. Importantly, the broadened voltage range and high capacity of the hybrid electrode enhance its energy density, which is leveraged further in a full-cell configuration.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
Australian Research Council; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1632117
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 117, Issue 6; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

References (46)

Reversible Anion Storage in a Metal-Organic Framework for Dual-Ion Battery Systems journal January 2019
The cathode–electrolyte interface in the Li-ion battery journal November 2004
Soft Carbon as Anode for High-Performance Sodium-Based Dual Ion Full Battery journal March 2017
Generalized Gradient Approximation Made Simple journal October 1996
Optimized LiFePO[sub 4] for Lithium Battery Cathodes journal January 2001
Raman spectroscopy of graphene and graphite: Disorder, electron–phonon coupling, doping and nonadiabatic effects journal July 2007
Wombat: The high-intensity powder diffractometer at the OPAL reactor journal November 2006
Performance and cost of materials for lithium-based rechargeable automotive batteries journal April 2018
An operando X-ray diffraction study of chloroaluminate anion-graphite intercalation in aluminum batteries journal May 2018
Unlocking the energy capabilities of micron-sized LiFePO4 journal August 2015
Study of the Cathode–Electrolyte Interface of LiMn[sub 1.5]Ni[sub 0.5]O[sub 4] Synthesized by a Sol–Gel Method for Li-Ion Batteries journal January 2010
Aqueous Li-ion battery enabled by halogen conversion–intercalation chemistry in graphite journal May 2019
Heterostructure Manipulation via in Situ Localized Phase Transformation for High-Rate and Highly Durable Lithium Ion Storage journal September 2018
Ab-initio simulations of materials using VASP: Density-functional theory and beyond journal October 2008
Surface Characterization of Electrodes from High Power Lithium-Ion Batteries journal January 2002
Perspective on Performance, Cost, and Technical Challenges for Practical Dual-Ion Batteries journal December 2018
Highly Improved Cycling Stability of Anion De-/Intercalation in the Graphite Cathode for Dual-Ion Batteries journal November 2018
SiO 2 -Enhanced Structural Stability and Strong Adhesion with a New Binder of Konjac Glucomannan Enables Stable Cycling of Silicon Anodes for Lithium-Ion Batteries journal June 2018
Fast Diffusivity of PF 6 Anions in Graphitic Carbon for a Dual-Carbon Rechargeable Battery with Superior Rate Property journal September 2016
An Outlook on Lithium Ion Battery Technology journal September 2017
Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High-Voltage Lithium Metal Batteries journal September 2018
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
Ultrafast all-climate aluminum-graphene battery with quarter-million cycle life journal December 2017
Energy and Capacity Projections for Practical Dual-Graphite Cells journal January 2000
A custom battery for operando neutron powder diffraction studies of electrode structure journal January 2015
Analysis and visualisation of neutron-scattering data journal December 1996
Electrochemical Intercalation of  PF 6 into Graphite journal January 2000
Carbon-Coated Porous Aluminum Foil Anode for High-Rate, Long-Term Cycling Stability, and High Energy Density Dual-Ion Batteries journal September 2016
A Review on the Features and Progress of Dual-Ion Batteries journal March 2018
X-ray diffraction patterns of graphite and turbostratic carbon journal July 2007
Recent progress and perspectives on dual-ion batteries journal July 2019
A Dual−Ion Battery Cathode via Oxidative Insertion of Anions in a Metal–Organic Framework journal October 2015
Electrical Energy Storage for the Grid: A Battery of Choices journal November 2011
Towards greener and more sustainable batteries for electrical energy storage journal November 2014
Li-ion battery materials: present and future journal June 2015
An In Situ Interface Reinforcement Strategy Achieving Long Cycle Performance of Dual‐Ion Batteries journal February 2019
Optimization of electrochemical properties of LiFePO4/C prepared by an aqueous solution method using sucrose journal January 2010
Investigation of SEI Layer Formation in Conversion Iron Fluoride Cathodes by Combined STEM/EELS and XPS journal April 2015
The Li-Ion Rechargeable Battery: A Perspective journal January 2013
Fast charging of lithium-ion batteries at all temperatures journal June 2018
Phospho-olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries journal April 1997
First-principles study of Li ion diffusion in LiFePO 4 journal March 2004
Yolk–Shell Structured FeP@C Nanoboxes as Advanced Anode Materials for Rechargeable Lithium‐/Potassium‐Ion Batteries journal February 2019
Atomic-Scale Investigation of Defects, Dopants, and Lithium Transport in the LiFePO 4 Olivine-Type Battery Material journal October 2005
A Novel Aluminum-Graphite Dual-Ion Battery journal March 2016
Lithium Nitrate Solvation Chemistry in Carbonate Electrolyte Sustains High-Voltage Lithium Metal Batteries journal September 2018

Similar Records

Targeted masking enables stable cycling of LiNi0.6Co0.2Mn0.2O2 at 4.6V
Journal Article · Fri Mar 11 00:00:00 EST 2022 · Nano Energy · OSTI ID:1632117

Ultra-Stretchable, Ionic Conducting, Pressure-Sensitive Adhesive with Dual Role for Stable Li-Metal Batteries
Journal Article · Thu Dec 08 00:00:00 EST 2022 · Advanced Functional Materials · OSTI ID:1632117

Effect of Lithium Borate Additives on Cathode Film Formation in LiNi0.5Mn1.5O4/Li Cells
Journal Article · Wed May 31 00:00:00 EDT 2017 · ACS Applied Materials and Interfaces · OSTI ID:1632117