Seeking Peer Review: Technical Comparison Table for LFP vs. Na-ion
Hi everyone,
I’m currently finalizing a research paper focusing on a multi-criteria decision-making (MCDM) analysis between Lithium Iron Phosphate (LFP) and Sodium-ion (Na-ion) batteries. I’ve compiled the attached data table representing the 2026 market landscape, and I’d appreciate some feedback on my logic—specifically regarding cycle life and data selection.
The "15,000 Cycles" Dilemma
Most Tier-1 Na-ion manufacturers (like CATL and BYD) are advertising lab results of 15,000+ cycles. However, I have intentionally capped my analysis at 6,000 cycles for the "Field/Commercial" metric, aligning with international organization reports (e.g., IRENA).
My reasoning: Lab conditions (constant temperature, low C-rates, narrow SoC windows) rarely translate to real-world grid or EV stress.
Question: Is it standard practice in your experience to reject these "hero" lab numbers in favor of more conservative, commercially realistic estimates?
Specific Models vs. General Averages
Instead of using generic "industry averages," I decided to use specific commercial cells (e.g., EVE K280LF, BYD Blade, CATL Naxtra).
Does this approach provide more robust results for MCDM, or does it risk making the study too "time-sensitive" as specific models evolve?
The "Thermal Stability" Metric
I’ve assigned Na-ion a near-perfect score (9.8-9.9) due to its inherent safety and ability to be transported at zero volts. However, I feel this metric is somewhat subjective and lacks a standardized quantitative scale in most literature.
How are you all quantifying "safety" beyond basic thermal runaway temperatures?
Primary Focus: Lifespan vs. Everything Else
While my query centers on Cycle Life, I’ve also included LCOS (Levelized Cost of Storage) in $/kWh and performance at -20°C.
I'd love to hear from engineers or researchers working with these chemistries. Does this table look "sane" for a high-impact journal submission?