Advanced Chemistry Cell (ACC) Batteries
Context
China has filed a complaint with the World Trade Organization (WTO) against India’s subsidies under Production-Linked Incentive (PLI) scheme, for the development of advanced chemistry cell (ACC) batteries; for boosting the auto sector; and for facilitating the production of Electric Vehicles, in contravention of WTO law.
About ACC Batteries
ACC batteries are secondary (rechargeable) electrochemical energy storage technologies that provide superior performance compared to traditional lead-acid and nickel-based batteries.
They are vital for the global energy transition and are critical for:
The electric mobility (EV) revolution
Storing intermittent renewable energy (like solar and wind) to support grid balancing.
A battery's key components include
A positive electrode (cathode)
A negative electrode (anode)
An electrolyte
A porous separator
Major Types of ACC Batteries
Advanced Lead-Acid Batteries:
These include innovations like lead-carbon batteries, where carbon is added to the electrodes.
Lithium-ion (Li-ion) Batteries (LIBs):
The most popular technology today.
These batteries use lithium as a current carrier.
Future/Emerging Technologies:
Solid-State Batteries:
These employ solid electrolytes instead of liquid or gel
This makes them potentially safer and less flammable
Sodium-Ion Batteries:
These use sodium as the cathode material, making them an attractive alternative to LIBs.
Applications of ACC Batteries
They offer enhanced energy density, cycle life, efficiency, safety, and scalability—making them suitable for electric vehicles (EVs), grid storage, and even aerospace applications.
Transportation Sector:
Electric vehicles (EVs) use LIBs and emerging solid-state batteries for higher energy-to-weight ratios
Heavy-duty transport (buses, trucks, and ships) may shift to sodium or metal-air systems.
This is the largest application, with different battery needs by vehicle types.
Power Sector
Front-of-the-Meter (Grid-Scale):
Batteries are connected to the transmission or distribution network to support grid functions
Power Sector:
They are used for capacity firming and ramping support to manage intermittency of solar and wind power
Ancillary Services:
They provide grid-balancing services like frequency regulation and voltage regulation
Behind-the-Meter (Consumer-End):
These are deployed at a home or business, primarily for power backup, load shifting (using stored energy during peak-price hours).
Off-Grid Systems:
They are also used to provide energy access in remote areas.