1. The essential difference between capacitors and batteries
Energy storage principle
Batteries: Energy storage through chemical reactions (such as lithium ion embedding/de-embedding), high energy density (lithium battery can reach 300 Wh/kg), suitable for long-term power supply, but slow charging and discharging speed (fast charging takes more than 30 minutes), short cycle life (about 500-1500 times).
Capacitors: Based on physical electric field energy storage (charge adsorbed on the electrode surface), high power density, fast response (millisecond charging and discharging), long cycle life (over 500,000 times), but low energy density (usually <10 Wh/kg).
Performance characteristics comparison
Energy and power: Batteries win in “endurance”, capacitors are stronger in “explosive power”. For example, a car needs a large instantaneous current to start, and capacitors are more efficient than batteries.
Temperature adaptability: Capacitors work stably in the range of -40℃~65℃, while lithium batteries drop sharply at low temperatures, and high temperatures can easily cause thermal runaway.
Environmental protection: Capacitors do not contain heavy metals and are easy to recycle; some batteries require strict treatment of electrolytes and heavy metals.
2. Supercapacitors: An innovative solution that integrates advantages
Supercapacitors use double-layer energy storage and pseudocapacitive reactions (such as redox) to combine physical and chemical energy storage mechanisms, and increase energy density to 40 Wh/kg (surpassing lead-acid batteries) while maintaining high power characteristics.
Technical advantages and application recommendations of YMIN capacitors
YMIN capacitors break through traditional limitations with high-performance materials and structural innovations, and perform well in industrial scenarios:
Core performance advantages
Low ESR (equivalent resistance) and high ripple current resistance: such as laminated polymer solid aluminum electrolytic capacitors (ESR < 3mΩ), reduce energy consumption, support instantaneous currents above 130A, and are suitable for server power supply voltage stabilization.
Long life and high reliability: Substrate self-supporting aluminum electrolytic capacitors (105℃/15,000 hours) and supercapacitor modules (500,000 cycles), significantly reducing maintenance costs.
Miniaturization and high capacity density: Conductive polymer tantalum capacitors (50% smaller in volume than traditional products) provide instantaneous energy for SSD power-off protection to ensure data security.
Scenario-based recommended solutions
New energy storage system: In the converter DC-Link circuit, YMIN film capacitors (withstand voltage 2700V) absorb high pulse currents and improve grid stability.
Automobile starting power supply: YMIN supercapacitor modules (applicable to -40℃~65℃) are fully charged in 3 seconds, replacing lithium batteries to solve the problem of low-temperature starting, and support air transportation.
Battery Management System (BMS): Solid-liquid hybrid capacitors (withstand 300,000 impacts) achieve battery voltage balancing and extend battery pack life.
Conclusion: Future trend of complementary synergy
The integrated application of capacitors and batteries has become a trend – batteries provide “long-lasting endurance” and capacitors bear “instantaneous load”. YMIN capacitors, with their three major characteristics of low ESR, long life, and resistance to extreme environments, promote energy efficiency revolution in new energy, data centers, automotive electronics and other fields, and provide “second-level response, ten-year protection” solutions for high-reliability demand scenarios.
Post time: Jun-25-2025