b-science.net
FAQ ☰ Use Cases Blog About Us Register Log In


2026-02-17
Visual Summary Switch to Patent Update

Li-Ion Battery Technology
Patent Highlights – Free Version

Multi-layer solid electrolyte architectures with halide-oxide-sulfide composite membranes, magnesium citrate-derived porous carbon scaffolds for silicon anodes, and dual-doping strategies for lithium manganese iron phosphate cathodes

Commercially Relevant Innovations by Category

⚡
Electrolytes
Solid & Semi-Solid
SAIC Qingtao
Three-layer composite: Li3InCl6 halide / Ta-doped LLZTO barrier / Li6PS5Cl sulfide
Retention: 90.6% @100 cyc
QuantumScape
Li5Si0.75Sn0.25PS6 (LSTPS) buffer layer between NMC cathode and garnet separator
Retention: 80.7% @1000 cyc
CATL
Sequential immersion-based layer formation (current collector → active material → electrolyte)
Superior layer conformity
−
Anode
Negative Electrode
Sila Nanotechnologies
Magnesium citrate-derived porous carbon scaffolds with MgO removal via acid etching
Surface Area: 500-4,800 m2/g
Group14 Technologies
Recirculating fluidized bed and auger-driven tubular reactors for silane CVD (300-900°C)
Continuous production without agglomeration
Apple
Bismuth or antimony additions (50 : 50 mass% carbon : silicon base)
Shutdown: 6% SoC vs 15% SoC
+
Cathode
Positive Electrode
SK ON
Bimodal Li-rich (60% Mn-rich secondary + 40% Co-containing single particles)
Rate (1.0 C / 0.1 C): 86% vs 73%
Toyota
Si-Mg dual-doped LiMn0.57Fe0.4Si0.02Mg0.02PO4 olivine
Retention: 110% (relative) @100 cyc
CATL
Dual lithium supplement (Li5FeO4 with Al2O3 coating + Li2NiO2) for LFP
Retention: 94.3% @1000 cyc
Key Comparative Benchmarks
Composite Solid Electrolyte Cycle Life (SAIC Qingtao)
72.6%
90.6%
Three-layer halide-LLZTO-sulfide composite (1 : 6 : 6 thickness ratio) vs. no LLZTO barrier layer • 100 cycles at 1 C, 25°C
Low State-of-Charge Power Capability (Apple)
15%
6%
Bismuth metal additions to silicon-carbon anodes vs. no bismuth addition • SoC at shutdown under pulse loads (lower is better)
Dual Lithium Supplement Cycle Life (CATL)
85.9%
94.3%
Dual additive system (Li5FeO4 with Al2O3 coating + Li2NiO2) vs. Li5FeO4 only • 1,000 cycles at 1 C, 25°C, LFP cathodes
Bimodal Li-Rich Voltage Stability (SK ON)
152 mV
103 mV
Bimodal distribution (60% secondary + 40% single particles) vs. 100% secondary particles • voltage drop after 100 cycles, 45°C (lower is better)

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

🏢
USA
QuantumScape
Product Development Pathway
Hybrid architecture strategy spatially separating functional requirements: garnet ceramic separator for lithium metal dendrite suppression, combined with liquid- or sulfide-containing catholyte for cathode interfacial contact. Anode-free manufacturing approach eliminating pre-deposited lithium metal through in-situ formation. Multi-layer surface stabilization methodology addressing garnet contamination and high-voltage degradation pathways. Scalable ceramic processing innovations targeting automotive-grade production economics through accelerated sintering cycles and defect-free tape casting. Protective cathode coating strategies for high-nickel materials enabling extended cycle life at elevated temperatures and voltages.
Key synergies between R&D concepts: Sequential surface treatment strategy addressing contamination removal and interfacial stabilization | Cathode degradation suppression compatible with alternative catholyte architectures | Sintering process development | Avoidance of Li metal handling in production
Read Full Chapter →