2019 Innovation & Patent Review: Lithium-ion Battery High Energy Anode - Silicon Suboxides & Si-C Composites Allow for Increased Li-ion Battery Energy Density
This review discusses options that are evaluated by key lithium-ion industry players to synthesize high energy negative electrode materials and corresponding electrodes according to a machine learning-supported analysis of global patent filings.
Scope
255,769 battery patent documents published across the globe between January 2017 and April 2019 have been screened using a machine learning approach (commercial relevance in the context of Li-ion battery anodes).
The resulting ranking includes 296 companies.
Patent portfolios by 34 key companies are discussed in detail and have been assembled into 17 decision trees that illustrate 106 different technical choices made by high energy material and Li-ion battery manufacturers.
3-5 key patents by another 51 companies are listed.
Reasons to Buy
Comprehension of the high energy negative electrode decision tree allows for the identification of promising future R&D directions that have not yet been explored.
The review supports battery makers and automotive players in defining their roadmap, i. e. which anode materials can be used for mass applications at which energy density and with which timeline.
Key Highlights
The review highlights how innovation leaders combine many different process steps to obtain high performing materials and batteries. Many other players can learn based on this review which crucial parts of the innovation puzzle they have been considering to an insufficient extent thus far.
Key Topics Covered
Executive Summary
Introduction
Focus of this Review
Li-Ion Battery Cell Components
Replacement of Graphite with Higher Energy Materials
Decision Tree for High Energy Negative Electrodes
Chemical Composition (Core)
SiOX (0 < X < 2) - Synthetic Processes
SiOX (0 < X < 2) - Coatings
Lithiation of SiOX (0 < X < 2)
Functionalization of Carbon-Coated SiOX (0 < X < 2)
SiOX (0 < X < 2) Composites
Nano-Si - Synthetic Processes
Nano-Si - Coatings
Coating of Carbon with Si
Si-C Composites - Synthetic Processes
Si-C Composites - Precursors
Si-C Composites - Binders/Dispersants
Si Alloys - Elemental Composition/Coatings
Carbon Additives for Negative Electrodes
Binders for Negative Electrodes
High Energy Electrode Designs & Fabrication Methods
Predictions
Machine Learning-Based Identification of Commercially Relevant Patents
Anode Material Suppliers
Shin-Etsu - Japan
Shanshan - China
Hitachi/Maxell - Japan
Datong Xincheng - China
Kuraray - Japan
BTR - China
Mitsubishi Chemical - Japan
Umicore - Belgium
Showa Denko - Japan
Wacker - Germany
XFH - China
Dongguan Kaijin - China
Nanograf/SiNode/JNC - USA/Japan
Posco - Korea
Hunan Shinzoom/Hunan Xingcheng/Hunan Zhongke - China
Shenzhen Sinuo - China
3M - USA
BASF/enerG2/Toda Kogyo/Sion Power - Germany/USA/Japan