<2023> Mitigation/ Prediction/ Diagnosis of Battery Degradation; Technology Status and Related Companies

Description

Battery degradation is the root cause of performance degradation of batteries. High-capacity and high-power batteries in particular require deep understanding about the degradation because its performance gets worse due to severe degradation.

Currently, concerning the degradation, development of diagnosis technology for waste batteries and fast charging has been carried out and the market has been formed.

Diagnosis technology is essential for reuse of waste batteries. Several OEMs have engaged in the business of reuse of waste batteries over the past several years, and many companies are preparing new businesses by using various applications where waste batteries can be reused.

Long battery life and short charging time are required for EVs to overcome the market share of traditional gasoline/diesel engine vehicles. These are fundamental needs that allow the battery and EV market to expand rapidly, and for this reason, mitigation/suppression technology against degradation under severe conditions is essential.

This report is divided into 11 chapters. Chapter 1-3 provides basic knowledge about battery degradation and needs of the technology, chapter 4-5 describe causes and effect of degradation, chapter 6-7 describe mitigation strategy for degradation and degradation diagnosis/prediction technology, chapter 10-9 describe patents and latest technology.

This report provides in-depth understanding of battery degradation, and introduces strategy to mitigate degradation and various technologies to diagnose and predict degradation. It also provides detailed information on Korean and international companies, markets and industry trends, and patents and notable technologies.

Product Code: 197

1. Brief Introduction

1.1. Intensified Technology Competition
1.2. Issues after use
1.3. Environmental pollution issue
1.4. Fast Charging issues

2. Lithium-ion Batteries

2.1. Components

3. Degradation

3.1. What is degradation?
3.2. Degradation mechanism

4. Materials

4.1. Cathode
- 4.1.1. Degradation due to cathode materials
- 4.1.2. Degradation/Mitigation Factors
- 4.1.3. Effects of Degradation
4.2. Anode
- 4.2.1. Degradation due to anode material
- 4.2.2. Degradation/Mitigation Factors
- 4.2.3. Effects of degradation
4.3. Electrolyte
4.4. Degradation of inactive materials (binder, current collector, separator, other components.)
4.5. Other degradation factors (ageing conditions, ambient temperature, battery design, users, etc.)
4.6. Connection between degradation mechanisms
- 4.6.1. Positive-feedback scenario
- 4.6.2. Negative-feedback scenario

5. Effects of Cell Degradation

5.1. Performance Degradation

6. Battery degradation mitigation strategy

6.1. Improvement of active material materials
- 6.1.1. Cathode active materials
- 6.1.2. Anode active materials
- 6.1.3. SEI
6.2. Charging Techniques
- 6.2.1. Constant voltage charging method (CV)
- 6.2.2. Constant current charging method (CC)
- 6.2.3. Constant current/constant voltage charging method (CC-CV)
- 6.2.4. Constant power (CP) method
- 6.2.5. Constant power/constant voltage charging method (CP-CV)
- 6.2.6. Boost charging method
- 6.2.7. Varying current decay charging method (VCD)
- 6.2.8. Multi-stage constant current charging method (MCC)
- 6.2.9. Pulse charging method
- 6.2.10. Trickle charging method

7. Battery degradation diagnosis/prediction technology

7.1. Analysis techniques by degradation mode
- 7.1.1. Structural change and decomposition analysis of active materials
- 7.1.2. Particle destruction analysis
- 7.1.3. Analysis of SEI layer growth
- 7.1.4. Li plating analysis
7.2. Electrochemical analysis techniques
- 7.2.1. Cell voltage and capacity analysis
- 7.2.2. Resistance Analysis
7.3. Non-Model Based Analysis
- 7.3.1. Battery internal factor diagnosis
- 7.3.2. Battery external factor diagnosis
7.4. Model-based analysis
- 7.4.1. Types of Models
- 7.4.2. SEI layer growth
- 7.4.3. Li plating
- 7.4.4. Structural change and decomposition of cathode
- 7.4.5. Particle destruction
- 7.4.6. Silicon additives
7.5. Diagnosis and prediction by using machine learning/artificial intelligence
- 7.5.1. Background of diagnostic technology by ML/AI
- 7.5.2. Performance and safety prediction
- 7.5.3. Degradation and life prediction
- 7.5.4. Online estimation technology
7.6. Post-Mortem Analysis
- 7.6.1. Precautions for cell disassembly
- 7.6.2. Cell opening procedure and component removal method
- 7.6.3. Physical analysis technology
- 7.6.4. Chemical analysis technology
- 7.6.5. Thermal stability analysis

8. Status of companies related to battery degradation

8.1. Korea (20 companies)
8.2. North America (15 companies)
8.3. Europe (5 companies)
8.4. Japan (5 companies)
8.5. China (10 companies)
8.6. Others

9. Market status and outlook

9.1. BMS
- 9.1.1. Outlook for BMS global market (2021 - 2030)
- 9.1.2. BMS suppliers by EV model (2012 - 2024)
9.2. Fast Charger
- 9.2.1. Global market status
- 9.2.2. Outlook for US fast charger market (2021 - 2030)
- 9.2.3. Current status by major US cities
- 9.2.4. Status of fast chargers by region in Korea

10. Patents for Battery Degradation Suppression/Diagnosis (2017-2021)

10.1. Patents in Korea

11. Latest technology for degradation diagnosis

11.1. Behavior Analysis for Charge Transfer Resistance
11.2. Analysis of local Li plating according to temperature nonuniformity
11.3. IR Drop Analysis
11.4. Incremental Capacity Analysis
11.5. Differential Voltage Analysis
11.6. Graphite-based anode interface analysis under fast charging conditions
11.7. Development of Anode Coating Materials and Impedance Analysis