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Ultrahigh energy storage performance of a 0.75Bi0.47Na0.47Ba0.06TiO3-0.25CaTi0.8Sn0.2O3 ceramic under moderate electric fields
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2023-08-11 , DOI: 10.1039/d3qi01228j Jiangtao Fan 1 , Jiaxin Wang 1 , Gang He 1 , Zhen Long 1 , Zhanggui Hu 1
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2023-08-11 , DOI: 10.1039/d3qi01228j Jiangtao Fan 1 , Jiaxin Wang 1 , Gang He 1 , Zhen Long 1 , Zhanggui Hu 1
Affiliation
The development of ceramic capacitors featuring high reliability and superior comprehensive performance is vital for practical applications in medium electric fields. In this work, a synergistic strategy was proposed to improve the energy storage performance of (1 − x)0.94Bi0.47Na0.47Ba0.06TiO3-xCaTi0.8Sn0.2O3 ((1 − x)BNBT-xCTS) ceramics by introducing polymorphic nanodomains and transforming rhombohedral (R3c) to tetragonal (P4bm) forms, exhibiting a superparaelectric state at room temperature (RT). Remarkably, a lead-free 0.75Bi0.47Na0.47Ba0.06TiO3-0.25CaTi0.8Sn0.2O3 (0.75BNBT-0.25CTS) ceramic exhibits superior energy storage properties: Wrec = 5.81 J cm−3 and η = 90.5% at a moderate field of 315 kV cm−1, along with promising frequency/temperature stability (1–200 Hz and 20–200 °C) as well as a fast discharge rate (t0.9) of 72 ns. Additionally, the sample of 0.75Bi0.47Na0.47Ba0.06TiO3-0.25CaTi0.8Sn0.2O3 shows excellent dielectric constant and thermal stability (Δε′/ε′25 °C ≤ ±15% at 1 kHz) in the range of −120 to 204 °C, satisfying the XR9-type capacitor. This study shows that the construction of polymorphic nanodomains and superparaelectric states at RT is an effective strategy to obtain high-efficiency energy storage ceramics under medium electric fields.
中文翻译:
0.75Bi0.47Na0.47Ba0.06TiO3-0.25CaTi0.8Sn0.2O3陶瓷在中等电场下的超高储能性能
开发高可靠性和优越综合性能的陶瓷电容器对于介质电场的实际应用至关重要。在这项工作中,提出了一种协同策略来提高(1 − x )0.94Bi 0.47 Na 0.47 Ba 0.06 TiO 3 - x CaTi 0.8 Sn 0.2 O 3 ((1 − x )BNBT- x CTS)陶瓷的储能性能通过引入多态纳米域并将菱形 ( R 3 c ) 转变为四方晶 ( P 4 bm)形式,在室温(RT)下表现出超顺电态。值得注意的是,无铅0.75Bi 0.47 Na 0.47 Ba 0.06 TiO 3 -0.25CaTi 0.8 Sn 0.2 O 3 (0.75BNBT-0.25CTS)陶瓷表现出优异的储能性能:W rec = 5.81 J cm -3和η = 90.5%在 315 kV cm -1的中等场强下,具有良好的频率/温度稳定性(1-200 Hz 和 20-200 °C)以及72 ns 的快速放电速率( t 0.9 )。另外,0.75Bi 0.47 Na 0.47 Ba的样品0.06 TiO 3 -0.25CaTi 0.8 Sn 0.2 O 3在-120至204 °C范围内表现出优异的介电常数和热稳定性(Δ ε '/ ε ' 25 °C ≤ ±15% at 1 kHz),满足XR9型电容器。这项研究表明,在室温下构建多态纳米域和超顺电态是在中电场下获得高效储能陶瓷的有效策略。
更新日期:2023-08-11
中文翻译:
0.75Bi0.47Na0.47Ba0.06TiO3-0.25CaTi0.8Sn0.2O3陶瓷在中等电场下的超高储能性能
开发高可靠性和优越综合性能的陶瓷电容器对于介质电场的实际应用至关重要。在这项工作中,提出了一种协同策略来提高(1 − x )0.94Bi 0.47 Na 0.47 Ba 0.06 TiO 3 - x CaTi 0.8 Sn 0.2 O 3 ((1 − x )BNBT- x CTS)陶瓷的储能性能通过引入多态纳米域并将菱形 ( R 3 c ) 转变为四方晶 ( P 4 bm)形式,在室温(RT)下表现出超顺电态。值得注意的是,无铅0.75Bi 0.47 Na 0.47 Ba 0.06 TiO 3 -0.25CaTi 0.8 Sn 0.2 O 3 (0.75BNBT-0.25CTS)陶瓷表现出优异的储能性能:W rec = 5.81 J cm -3和η = 90.5%在 315 kV cm -1的中等场强下,具有良好的频率/温度稳定性(1-200 Hz 和 20-200 °C)以及72 ns 的快速放电速率( t 0.9 )。另外,0.75Bi 0.47 Na 0.47 Ba的样品0.06 TiO 3 -0.25CaTi 0.8 Sn 0.2 O 3在-120至204 °C范围内表现出优异的介电常数和热稳定性(Δ ε '/ ε ' 25 °C ≤ ±15% at 1 kHz),满足XR9型电容器。这项研究表明,在室温下构建多态纳米域和超顺电态是在中电场下获得高效储能陶瓷的有效策略。