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2026-01-06
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Li-Ion Battery Technology
Patent Highlights – Free Version

Porous graphene and antimony interfaces on solid electrolyte layers, CNT-length optimization for silicon-carbon anodes, and compression-molded cathode materials with enlarged grain sizes

Prospective High Impact Advancements

⚡
Electrolytes
Solid & Semi-Solid
CATL
Porous graphene functional layer (3-9% porosity, 0.2-15 nm pores)
Retention: 82% @200 cyc
Samsung SDI
Asymmetric lithium salt with sulfide electrolytes (low melting point: 100°C vs 235°C)
σ: 8.3×10-4 S/cm
Belenos
Antimony-coated LLZO layer (5-10 nm) with Li-Sb alloy interfaces
Jcrit: 70 mA/cm2 @75°C
−
Anode
Negative Electrode
Shin-Etsu Chemical
CO-enabled low-temp CVD (365-380°C) with Si-C bond formation
Capacity: 1,860 mAh/g
Ionic Mineral Tech
Multi-staged magnesiothermic reduction with reduced thermal moderator
Throughput: +50%
Panasonic Energy
Si-carbon composite with optimized CNT fiber length (5.2 μm)
Retention: 98% @1000 cyc
+
Cathode
Positive Electrode
L&F
Compression molding + vessel-free sintering (700-900°C)
Capacity: 214.5 mAh/g
Nano One
Sequential metal digestion (Mn/Co first, then Ni with peroxide)
Eliminates strong acids
Toyota
Ferromanganese-based LMFP synthesis route
Low-cost commodity precursor
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.
Solid Electrolyte Ionic Conductivity (Samsung SDI)
8.3
6.4
+30%
Asymmetric lithium salt (low melting point) vs. no lithium salt • ×10-4 S/cm at 25°C
Thermal Moderator Requirements (Ionic Mineral Tech)
≤1:1
4:1
−75%
Multi-staged Mg addition in rotary furnace vs. one-step process • moderator:reactants ratio (lower is better)
Si-Carbon Anode Cycle Retention (Panasonic Energy)
98%
84%
+17%
CNT fiber length optimization (5.2 μm) vs. shorter CNT (1.8 μm) • retention at 1,000 cycles
High-Ni NCM Grain Size (L&F)
237
85-91
+170%
Compression molding + vessel-free sintering (700-900°C) vs. conventional sintering • XRD (003) plane grain size (nm)

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

🏢
South Korea
LG Energy Solution
Product Development Pathway
Triple-track development: Sulfide electrolytes with dry processing and moisture-resistant coatings for scalable manufacturing. Polymer electrolytes featuring chelating structures and self-healing networks. Oxide/polymer composites combining ceramic reinforcement with thermally-activated interface layers for semi-solid bipolar cells.
Key synergies: Well-balanced technology stacks across all three approaches with polymer capabilities potentially contributing to interface adhesion challenges in both sulfide and oxide/polymer systems
Read Full Chapter →
🏢
Japan
Panasonic
Product Development Pathway
Dual-track approach: Halide electrolytes for specialty applications (industrial robots, drones, high-temperature environments) combining crystal structure engineering, protective oxide interlayers, and gradient catholyte architectures balancing conductivity and oxidation stability. Sulfide/halide hybrid systems in collaboration with Toyota featuring controlled moisture adsorption, silicon-lithium silicate composites, and dual-layer cathode coatings.
Key synergies: Compositionally graded halide architectures + protective interlayer chemistry + thermally stabilized bulk electrolytes
Read Full Chapter →
🏢
Taiwan
ProLogium Technology
Product Development Pathway
Multi-generation roadmap: Oxide/polymer composite electrolytes with bilayer separator architecture and protected ceramic reinforcement. Dual-binder silicon composite electrodes managing high volume expansion. Multi-mechanism thermal runaway suppression systems. Future fully inorganic electrolytes with lithium metal anodes.
Key synergies: Ultra-thin robust separators + stabilized low-cost Si + integrated safety mechanisms
Read Full Chapter →