Large Energy Capacitive High-Entropy Lead-Free Ferroelectrics

And a large efficiency of ~ 82.4% are achieved in high-entropy lead-free relaxor ferroelectrics by increasing configuration entropy, named high-entropy strategy, realizing nearly ten times growth of energy storage density compared with low-entropy material. Evolution of energy storage performance and domain structure with increasing configuration entropy is systematically revealed for the first time. The achievement of excellent energy storage properties should be attributed to the enhanced random field, decreased nanodomain size, strong multiple local distortions, and improved breakdown field. Furthermore, the excellent frequency and fatigue stability as well as charge/discharge properties with superior…

• NN
  National Natural Science Foundation of China

  Awards: 21825102, 22235002, 22105017, 52172181
• SJ
  Shanghai Jiao Tong University