Summary

Anodes

New anode materials offer the chance of significantly improved battery performance, particularly energy density and fast charge capability. Two of the most exciting material developments to Li-ion are the development and adoption of silicon anodes and Li-metal anodes, the latter often but not always in conjunction with solid-electrolytes. The excitement stems primarily from the possibility of these anode materials significantly improving energy density, where improvements of up to 50% over current state-of-the-art Li-ion cells are feasible. Enhancements to rate capability, safety, environmental profile, and even cost, are also being highlighted by silicon anode developers in particular. However, shifting from the use of silicon oxides as an additive to higher weight percentages, and the use of lithium-metal anodes have posed serious problems to battery cycle life and longevity, which has delayed and limited commercial adoption so far. This report covers and analyzes the solutions being developed and provides coverage of the various companies starting to commercialise their high energy anode materials and designs. The report also provides coverage of high-rate anode materials based on metal oxides such as lithium titanate and niobium oxides.

 

Cathodes

While new cathode materials are expected to provide improvements over incumbents and direct competitors, they are unlikely to push the performance envelope of Li-ion batteries significantly. Instead, cathode development can help to optimise and minimise the trade-off inherent in deploying one chemistry over another. Material costs and supply chain concerns also play a critical role in the development of next-generation cathodes materials. For example, companies continue to push nickel content in NMC cathodes to maximise performance and reduce cobalt reliance, LMFP cathodes offer a higher energy density than LFP whilst maintaining a similar cost profile, while Li-Mn-rich cathodes can provide similar energy densities to NMC materials whilst reducing cobalt and nickel content. Alternative methods of producing cathode active materials are also under development to reduce waste production, emissions and importantly, costs. IDTechEx's report provides an appraisal of the various next-generation Li-ion cathode materials, highlighting their respective strengths and weaknesses and the value proposition they offer, or could offer, to specific applications and markets.

 

Lithium-sulfur

Lithium-sulfur batteries represent a greater departure from conventional Li-ion technology with the intercalation cathode replaced with conversion-type sulfur and with the anode typically comprising lithium-metal. The high capacity and low density of sulfur, and lithium, means companies developing Li-S batteries have demonstrated gravimetric energy densities as high as 450 Wh/kg - approximately 50% higher than state-of-the-art Li-ion. The use of low-cost and widely available sulfur, in place of materials such as nickel and cobalt, also offers the potential for cost and supply chain benefits. However, cell-design specifics and manufacturing scale are critical for achieving these cost benefits, while Li-S batteries typically suffer from poor cycle life and rate capability, highlighting a number of challenges that need to be overcome prior to commercialization.

 

Cell and battery design

Developments to cell and battery pack design can play a similarly important role in ongoing performance gains. At the cell level, electrode structure, current collector design, electrolyte additives and formulations, and the use of additives such as carbon nanotubes will continue to play a role in maximising Li-ion performance across various applications. At the pack level, cell-to-pack designs are becoming increasingly popular for electric cars as a means to optimise energy density and are being developed by players such as BYD, CATL, and Tesla, amongst others. More innovative battery management systems and analytics also represents a key route to battery improvement, offering one of only a few ways to improve performance characteristics including energy density, rate capability, lifetime, and safety simultaneously - a feat that is notoriously difficult to achieve.

 

Commercialization

Current Li-ion materials processing and cell manufacturing is dominated by Asia and China. While the US and Europe in particular are now looking to develop and nurture their own battery supply chains, one route to capturing and domesticating value could be to lead the way in innovation and next-generation technology development. Here, the US and Europe fare slightly better. Looking at start-up companies by geography, as a proxy for innovation, and the US comes out as a leader in next generation technology. Europe is also home to a growing battery industry and start-up landscape, though it needs to be noted that development in Asia is likely under-represented given the stronger presence of major battery manufacturers and materials companies. The report is complemented with a selection of company profiles covering company involvement across various areas of battery technology and innovation.

 

Key aspects

This report provides the following information:

•  Introduction to Li-ion battery technologies.
•  Analysis, discussion and appraisal of advanced and next-generation Li-ion technologies including: silicon anodes, lithium metal anodes, lithium titanate and niobates, high-manganese cathodes, ultra-high nickel NMC cathodes, LMFP cathodes, alternative CAM production routes.
•  Player coverage across anodes, cathodes and other cell developments (e.g. carbon nanotubes, electrolytes, electrode and cell structure, BMS).
•  Analysis of funding, activity, and commercialization into next-generation Li-ion technology development.
•  Discussion of markets and applications, battery demand forecasts, forecasts of anode and cathode splits.

ページTOPに戻る

Table of Contents

1. EXECUTIVE SUMMARY

2. INTRODUCTION

3. ANODES

3.1. Introduction

3.2. Lithium-Metal Anodes

4. CATHODES

4.1. Introduction

4.2. High and Ultra-High Nickel NMC

4.3. Zero-Cobalt NMx

4.4. Lithium-Manganese-Rich (Li-Mn-Rich, LMR-NMC)

4.5. LNMO

4.6. LMFP

4.7. LMFP Market Landscape

4.8. Sulfur

4.9. Companies

4.10. Alternative Cathode Production Routes

4.11. Conclusions

5. SOLID-STATE BATTERIES

6. CELL AND BATTERY DESIGN

6.1. Cell Design and Inactive Materials

6.2. Evolving Cell Performance

6.3. Battery Packs and BMS

7. FORECASTS

8. COMPANY PROFILES