Enhancing Comprehensive Energy Storage Properties in Tungsten Bronze Sr0.53Ba0.47Nb2O6-Based Lead-free Ceramics by B-Site Doping and Relaxor Tuning

材料科学 陶瓷 电容器 电介质 青铜色 光电子学 储能 掺杂剂 烧结 兴奋剂 复合材料 冶金 电气工程 电压 功率(物理) 物理 工程类 量子力学
作者
Bian Yang,Jiayu Zhang,Xiaojie Lou,Yangfei Gao,Peng Shi,Yaodong Yang,Man Yang,Jie Cui,Lingling Wei,Shaodong Sun
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:14 (30): 34855-34866 被引量:13
标识
DOI:10.1021/acsami.2c06889
摘要

Dielectric ceramics with relaxor characteristics are promising candidates to meet the demand for capacitors of next-generation pulse devices. Herein, a lead-free Sb-modified (Sr0.515Ba0.47Gd0.01) (Nb1.9-xTa0.1Sbx)O6 (SBGNT-based) tungsten bronze ceramic is designed and fabricated for high-density energy storage capacitors. Using a B-site engineering strategy to enhance the relaxor characteristics, Sb incorporation could induce the structural distortion of the polar unit BO6 and order-disorder distribution of B-site cations as well as the modulation of polarization in the SBGNT-based tungsten bronze ceramic. More importantly, benefiting from the effective inhibition of abnormal growth of non-equiaxed grains, Sb introduction into SBGNT-based ceramics could effectively suppress the conductivity and leakage current density, enhancing the breakdown strength, as proved by the electrical impedance spectra. Consequently, a remarkable comprehensive performance via balancing recoverable energy density (∼3.26 J/cm3) and efficiency (91.95%) is realized simultaneously at 380 kV/cm, which surpasses that of the pristine sample without the Sb dopant (2.75 J/cm3 and 80.5%, respectively). The corresponding ceramics display superior stability in terms of fatigue (105 cycles), frequency (1∼200 Hz), and temperature (20∼140 °C). Further charge-discharge analysis indicates that a high power density (89.57 MW/cm3) and an impressive current density (1194.27 A/cm2) at 150 kV/cm are achieved simultaneously. All of the results demonstrate that the tungsten bronze relaxors are indeed gratifying lead-free candidate materials for dielectric energy storage applications.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
阔达的无剑完成签到,获得积分10
1秒前
桐桐应助sszxlijin采纳,获得10
1秒前
3秒前
Ran发布了新的文献求助10
3秒前
隐形曼青应助Della采纳,获得10
4秒前
yitai完成签到,获得积分10
4秒前
jjjjj发布了新的文献求助30
5秒前
杜兰特发布了新的文献求助20
6秒前
8秒前
木心应助负责小蜜蜂采纳,获得10
8秒前
Rondab应助负责小蜜蜂采纳,获得30
8秒前
shenzhou9发布了新的文献求助10
9秒前
9秒前
10秒前
10秒前
12秒前
rrgogo发布了新的文献求助10
12秒前
12秒前
酷波er应助展希希采纳,获得10
13秒前
慕青应助xn201120采纳,获得10
14秒前
七七完成签到,获得积分10
14秒前
Della发布了新的文献求助10
15秒前
gogoyoco发布了新的文献求助10
15秒前
符小俊完成签到,获得积分10
17秒前
旷野发布了新的文献求助10
17秒前
mammer完成签到,获得积分10
18秒前
左肩微笑完成签到,获得积分10
18秒前
来来完成签到,获得积分10
20秒前
Cochrane完成签到,获得积分0
20秒前
Hey关闭了Hey文献求助
21秒前
jjjjj完成签到,获得积分20
22秒前
22秒前
8R60d8应助yitai采纳,获得10
23秒前
科研助手6应助yitai采纳,获得10
23秒前
脑洞疼应助man采纳,获得10
23秒前
来来发布了新的文献求助10
23秒前
yizhiGao应助科研通管家采纳,获得10
25秒前
思源应助科研通管家采纳,获得10
25秒前
Akim应助科研通管家采纳,获得10
25秒前
852应助科研通管家采纳,获得10
25秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989550
求助须知:如何正确求助?哪些是违规求助? 3531774
关于积分的说明 11254747
捐赠科研通 3270278
什么是DOI,文献DOI怎么找? 1804966
邀请新用户注册赠送积分活动 882125
科研通“疑难数据库(出版商)”最低求助积分说明 809176