Flexible Supercapacitor with Wide Electrochemical Stable Window Based on Hydrogel Electrolyte

超级电容器 电解质 电化学 材料科学 电容 储能 电化学窗口 化学工程 自愈水凝胶 纳米技术 电极 化学 高分子化学 工程类 离子电导率 物理化学 功率(物理) 物理 量子力学
作者
Qi Zhang,Ruili Ren,Jingwen Hu,Ying Chen,Youming Guo,Yue Huang,Junfu Wei,Huan Zhang,Qingsong Pang,Xiaoqing Zhang,Huicai Wang
出处
期刊:Small [Wiley]
标识
DOI:10.1002/smll.202400369
摘要

Hydrogel electrolyte can endow supercapacitors with excellent flexibility, which has developed rapidly in recent years. However, the water-rich structures of hydrogel electrolyte are easy to freeze at subfreezing and dry at high temperatures, which will affect its energy storage characteristics. The low energy density of micro supercapacitors also hinders their development. Herein, a strategy is proposed to reduce the free water activity in the hydrogel to improve the operating voltage and the energy density of the device, which is achieved through the synergistic effect of the hydrogel skeleton, N, N'-dimethylformamide (DMF), NaClO4 and water. High concentrations of DMF and NaClO4 are introduced into sodium alginate/polyacrylamide (SA/PAAM) hydrogel through solvent exchange to obtain SA/PAAM/DMF/NaClO4 hydrogel electrolyte, which exhibited a high ionic conductivity of 82.1 mS cm-1, a high breaking strength of 563.2 kPa, and a wide voltage stability window of 3.5 V. The supercapacitor devices are assembled by the process of direct adhesion of the hydrogel electrolyte and laser induced graphene (LIG). The micro-supercapacitor exhibited an operating voltage of 2.0 V, with a specific capacitance of 2.41 mF cm-2 and a high energy density of 1.34 µWh cm-2, and it also exhibit a high cycle stability, good flexibility, and integration performance.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
ZQYYRA发布了新的文献求助10
1秒前
1秒前
4秒前
CipherSage应助YINZHE采纳,获得10
4秒前
6秒前
爆米花应助lingmuhuahua采纳,获得10
6秒前
小饼干发布了新的文献求助10
8秒前
shinysparrow应助甜蜜的若风采纳,获得50
8秒前
明理紫萱完成签到,获得积分10
9秒前
斯文败类应助毛不二采纳,获得10
11秒前
ZQYYRA完成签到,获得积分10
12秒前
NexusExplorer应助小小双采纳,获得10
12秒前
小武哥完成签到 ,获得积分10
15秒前
18秒前
19秒前
追寻发布了新的文献求助10
26秒前
yahonyoyoyo发布了新的文献求助10
31秒前
34秒前
彩色布条完成签到,获得积分10
35秒前
35秒前
稍稍完成签到,获得积分10
36秒前
赘婿应助科研通管家采纳,获得10
37秒前
今后应助科研通管家采纳,获得10
38秒前
天天快乐应助科研通管家采纳,获得10
38秒前
汉堡包应助科研通管家采纳,获得10
38秒前
38秒前
38秒前
觀海聴濤发布了新的文献求助10
41秒前
小房子发布了新的文献求助10
42秒前
稳重书双发布了新的文献求助10
42秒前
46秒前
47秒前
少年旭发布了新的文献求助10
48秒前
林嘉发布了新的文献求助10
49秒前
飘逸妙芙发布了新的文献求助10
51秒前
脑洞疼应助drtianyunhong采纳,获得10
52秒前
阮煜城完成签到,获得积分10
54秒前
55秒前
56秒前
JokerJie发布了新的文献求助10
58秒前
高分求助中
Teaching Social and Emotional Learning in Physical Education 900
Chinese-English Translation Lexicon Version 3.0 500
[Lambert-Eaton syndrome without calcium channel autoantibodies] 440
Plesiosaur extinction cycles; events that mark the beginning, middle and end of the Cretaceous 400
Two-sample Mendelian randomization analysis reveals causal relationships between blood lipids and venous thromboembolism 400
薩提亞模式團體方案對青年情侶輔導效果之研究 400
3X3 Basketball: Everything You Need to Know 310
热门求助领域 (近24小时)
化学 材料科学 医学 生物 有机化学 工程类 生物化学 纳米技术 物理 内科学 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 电极 光电子学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 2386515
求助须知:如何正确求助?哪些是违规求助? 2092963
关于积分的说明 5266585
捐赠科研通 1819823
什么是DOI,文献DOI怎么找? 907766
版权声明 559181
科研通“疑难数据库(出版商)”最低求助积分说明 484897