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2026-06-02
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Li-Ion Battery Technology
Patent Highlights – Free Version

Low-water-absorption cycloolefin/alkene copolymer binders suppressing H2S evolution in Li6PS5Cl sulfide electrolyte membranes, quasi-spherical silicon-carbon anode particles with transitional arc surfaces for stress-tolerant packing, and ultrasonic spray pyrolysis of size-controlled hollow precursors for single-particle high-Ni NMC cathodes

Conference Poster

Liquid Electrolyte vs. Semi-Solid vs. All-Solid Batteries

Navigating Performance, Cost, and Safety Trade-offs from Materials to EV / eVTOL Packs

Advanced Automotive Battery Conference (AABC) Europe · Mainz, Germany · May 18–21, 2026

Download Poster (PDF)

Prospective High Impact Advancements

⚡
Electrolytes
Solid & Semi-Solid
CATL
Ethylene-norbornene cycloolefin/alkene copolymer binder (water absorption ≈0.01%) blended with NBR (40 : 60) in a Li6PS5Cl membrane, suppressing H2S evolution in humid air
H2S: 20.5 cm3/g @70% humidity
Toyota
Halogen-free LiCB11H12 closo-borate placed in direct contact with fluorinated LiCB11H11F / LiCB11H10F2 derivatives, raising room-temperature Li+ conductivity and lowering migration activation energy
σ: 3.2 × 10-3 S/cm @30°C, Ea < 0.3 eV
BYD
Bimodal LATP (NASICON-type oxide) particle grading (0.5 + 1.5 μm) wrapped in a lithiated ethylene-methyl acrylate / LiTFSI polymer fiber network via solvent-free dry melt-casting
σ: 7 × 10-4 S/cm (LATP membrane)
−
Anode
Negative Electrode
Lanxi Zhide New Energy
Quasi-spherical silicon-carbon composite (SiH4 CVD on phenolic-resin porous carbon) with planar faces bridged by transitional arc surfaces, quantified by a polyhedron degree Q = 0.97
Rate (1 C / 0.1 C discharge): 85.8%
Sila Nanotechnologies
Silicon-carbon composite (CVD silicon in biomass-derived porous carbon, 50 : 50 with graphite) with narrowed particle-to-particle silicon mass-fraction distribution via fluidized-bed processing
Cycle life: ≈1,100–1,300 cycles (to 80%)
BYD
All-solid-state silicon-carbon with discrete LiAlO2 surface protrusions (1.0 mass%) mechanically anchoring active particles to the Li6PS5Cl sulfide electrolyte
Retention: 89.8% @800 cycles
+
Cathode
Positive Electrode
SK On
Hollow high-Ni precursor particles (30 μm) formed by ultrasonic spray pyrolysis at 1000°C, then crushed and lithiated to single-particle LiNi0.90Co0.05Mn0.05O2
Retention: 89% @100 cycles
BASF Shanshan
Composite fluoride coating of LiF and perovskite LiCoF3 (3 : 1) on W-doped single-crystal LiNi0.65Co0.07Mn0.28O2 formed via three-step sintering
DCR (10% SOC): 36.7 Ω
LG Chem
Carbon-coated V-doped LiMn0.29Fe0.7V0.01PO4 with BET specific surface area and pore volume confined to defined ranges to suppress manganese dissolution
Mn dissolution: 17 ppm
Benchmarking Experiments in Patents ⓘ
These benchmarks are drawn directly from experiments reported in the patents, where an inventive example incorporating the claimed innovation is compared against a comparative example that omits it while keeping the cell configuration, chemistry, and test conditions otherwise equivalent.
H2S Evolution Suppression in Humid Air with Cycloolefin Copolymer Binder (CATL)
20.5
75.8
Ethylene-norbornene cycloolefin/alkene copolymer co-binder (water absorption ≈0.01%, NBR : copolymer = 40 : 60) vs. NBR-only binder • H2S release at 70% relative humidity, Li6PS5Cl membrane, cm3/g (lower is better)
Quasi-Spherical Si-C Cycle Retention from Transitional Arc Surfaces (Lanxi Zhide New Energy)
99%
94.5%
Transitional arc surfaces bridging planar faces (polyhedron degree Q = 0.97) vs. angular polyhedral particles with planar faces only (Q ≈ 0.94) • capacity retention after 100 cycles, 1 C charge / 1 C discharge, LiCoO2 full cells, 25°C
Single-Particle High-Ni NMC Retention from Size-Controlled Hollow Precursor (SK On)
89%
75%
Hollow precursor crushed from a 20–40 μm diameter (1000°C spray-pyrolysis formation zone) vs. undersized 19 μm precursor (700°C) • capacity retention after 100 cycles, coin half-cells, 3.0–4.3 V, single-particle LiNi0.90Co0.05Mn0.05O2
DC Resistance Reduction with Composite LiF / LiCoF3 Coating (BASF Shanshan)
36.7 Ω
51.6 Ω
Composite fluoride coating of LiF and perovskite LiCoF3 (3 : 1) vs. single LiF coating without the LiCoF3 component • DC internal resistance at 10% SOC, single-crystal LiNi0.65Co0.07Mn0.28O2, 3.0–4.45 V (lower is better)

Recently Published Company Chapter
(Solid-state / Semi-solid Li-ion Battery Innovation & Patent Review)

🏢
USA
Factorial Energy
Technology Assessment: Factorial supplied automotive-format cells validated by a major OEM and completed a long-distance road demonstration — yet multi-thousand-cycle lithium-metal life at production volume remains the central scale-up question. The chapter examines how a polymer-electrolyte/lithium-metal platform complements an all-solid-state sulfide track, why multi-layer pouch-stacking yield anchors manufacturability, and how public claims align with the patent portfolio's development priorities.
Product Development Pathway
(5 R&D Concepts)
Crosslinked, in-situ-curable polymer electrolyte system pairing a high-concentration lithium salt with a low-loading functional additive to form a network with ion-transport channels tuned to lithium mobility. Dry-film cathode preparation that incorporates the electrolyte directly into a calenderable electrode mixture, removing wet slurry casting and post-assembly soaking while enabling thick, high-capacity electrodes. Further concepts address lithium-metal interphase stabilization for plating efficiency, bubble-free in-situ electrolyte curing for interface integrity and extended precursor shelf life, and weld-free continuous anode-foil production that folds tab formation into one lamination step.
Key Synergies: An in-situ-curable polymer-electrolyte base anchors complementary anode-interphase, cure-chemistry, and electrode-fabrication concepts — aligning energy density, cycle life, safety, and manufacturability toward a single automotive-qualifiable cell architecture.
Read Full Chapter →