Market Context — Why This Technology, Why Now

The global energy transition is driving unprecedented demand for advanced battery technologies beyond the capabilities of conventional Li-ion. Industries from automotive to grid infrastructure require solutions that offer superior energy density, longer cycle life, and enhanced safety at competitive costs. This technology directly aligns with these trends, providing a pathway to next-generation Li-S batteries that can power longer-range EVs, stabilize renewable grids, and enable more robust portable electronics, accelerating the shift towards a sustainable energy future.

Key Competitive Advantages
01

Maximizes Energy Density: Suppresses lithium polysulfide dissolution from porous carbon-sulfur composites, significantly improving sulfur active material utilization for high energy density batteries.

02

Extends Battery Life: Incorporating chloro-ethylene carbonate into the electrolyte dramatically improves charge-discharge cycle characteristics, contributing to longer battery lifespan.

03

Secures Business with Robust IP: Patentability was confirmed through standard prior art searches, and strong claims, meticulously designed by a reputable agent and cleared by examiners, provide stable business protection.

Market Opportunity
Electric Vehicles (EVs)
$160B–$170B globally (AI est.)
Extending driving range and reducing costs are critical for EV adoption. This technology could simultaneously address these challenges, accelerating market growth.
Global automotive OEMs EV battery manufacturers Charging infrastructure developers
Stationary Energy Storage Systems
$60B–$70B globally (AI est.)
As renewable energy adoption expands, large-capacity, long-life batteries are essential to absorb power fluctuations. This technology could significantly contribute to this need.
Grid-scale battery integrators Renewable energy project developers Utility companies
Drones and eVTOL Aircraft
$30B–$40B globally (AI est.)
Lightweight, high-energy-density batteries are crucial for determining flight time and payload capacity in these devices. This technology directly enhances their performance.
Aerospace and defense contractors Commercial drone manufacturers Urban air mobility developers
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects the core elements determining Lithium-Sulfur secondary battery performance, specifically the combination of a porous carbon-sulfur composite cathode and a chloro-ethylene carbonate electrolyte solvent, across 10 claims. The patent was granted after successfully addressing an office action with precise arguments and amendments, indicating strong patentability and a robust scope of protection against prior art.

Competitive White Space

This patent primarily covers specific electrolyte compositions and cathode material structures. Licensees could explore building additional IP in areas such as novel anode materials, advanced battery management systems, or innovative cell packaging designs for specific applications without conflict.

Economic Impact
~$350K/year estimated operational cost savings and productivity gains per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

If applied to EV batteries, this technology could extend battery life by approximately 1.5 times compared to conventional solutions. This reduces battery replacement frequency, cutting replacement costs (~$6,500/unit (AI est.)) and opportunity loss from downtime (~$3,500/unit (AI est.)). For 50 EVs annually, the estimated savings are (~$6,500 + ~$3,500) × 50 units × (1 - 1/1.5) = ~$150K (AI est.). Additionally, higher energy density extends operating time, boosting productivity. The total annual economic impact is estimated to exceed ~$350K (AI est.).

Speed to Market
5× faster than in-house development
This technology specifically addresses key challenges in Lithium-Sulfur secondary batteries, focusing on electrolyte stabilization and cycle life improvement. Its principles and material selection are already established and patented. This significantly reduces the time required for fundamental research, material selection, and validation testing that a licensee would face developing similar technology from scratch. With the technical concept proven and patent granted, licensees can rapidly begin evaluating application to existing battery development and manufacturing lines, potentially shortening time-to-market by approximately 4 years.
Competitive Positioning

X: Energy Density
Y: Cycle Life

Business Models & Applications
🏭 Manufacturing License Grant
Licensees can integrate this electrolyte and battery manufacturing technology into their products, enabling the development and sale of high-performance Lithium-Sulfur secondary battery products.
🤝 Joint Development & Technical Alliance
Combine the licensee's battery manufacturing expertise and application development know-how with this technology to drive joint development of high-performance batteries for specific applications.
🧪 Material Supplier Collaboration
Partner with suppliers manufacturing the specified electrolyte solvent and cathode materials to establish a stable, high-quality material supply chain for licensees.
Adjacent Application Opportunities
🚀 宇宙・航空
Power for Small Satellites & Drones
This lightweight, high-energy-density technology is ideal for weight-constrained small satellites and long-endurance drones. It could enable missions previously impossible with existing batteries, potentially extending operational times by 2x.
🤖 ロボティクス
Extend Runtime for Industrial & Service Robots
For autonomous guided vehicles (AGVs) and service robots, reduced charging frequency directly boosts uptime and productivity. This technology could significantly extend continuous operating hours, potentially cutting charging cycles by 50%.
💡 IoT・ウェアラブル
High-Performance Batteries for Next-Gen Wearables
In compact, long-duration IoT and wearable devices like smartwatches and AR/VR headsets, this technology could offer high-performance batteries. This enhances design flexibility while potentially extending device usage by 1.5x.
Integration Roadmap — Estimated 22-Month Deployment
Phase 1: Technology Evaluation & PoC
Duration: 4 months
Evaluate the applicability of this technology's electrolyte to a licensee's existing cell design. Verify basic charge-discharge characteristics and stability using small-scale prototype cells.
Phase 2: Prototype Development & Optimization
Duration: 9 months
Develop near-commercial-size prototype batteries. Optimize the electrolyte and cathode material combination for the licensee's manufacturing process, conducting parallel safety evaluations.
Phase 3: Mass Production & Market Launch
Duration: 9 months
Plan the transition to mass production based on optimized prototypes. Establish full-scale manufacturing line trials and quality control systems, aiming for product launch into target markets.
Technical Feasibility
This technology optimizes electrolyte composition and cathode materials for Lithium-Sulfur secondary batteries, making it potentially easy to integrate into existing battery manufacturing processes and cell designs. The patented solvent and porous carbon composite materials can be introduced without significant changes to current electrode formation techniques or electrolyte injection processes, enabling the development of high-performance next-generation batteries with reduced capital expenditure.
Success Scenario
Adopting this technology could enable licensees to overcome major commercialization barriers for Lithium-Sulfur secondary batteries, launching products that combine high energy density with extended lifespan. This could extend electric vehicle driving ranges by up to 30%, reducing reliance on charging infrastructure. For drones and IoT devices, it is estimated to double operating times, significantly enhancing product competitiveness.
Patent Record
APPLICATION NO.
特願2020-187052
REGISTRATION NO.
7630154
FILING DATE
2020/11/10
GRANT DATE
2025/02/06
EXPIRATION DATE
2040/11/10
PATENT HOLDER
学校法人　関西大学
Examination History
2023年10月31日
出願審査請求書
2024年08月27日
拒絶理由通知書
2024年10月24日
意見書
2024年10月24日
手続補正書（自発・内容）
2025年01月21日
特許査定