In-plane grain boundary induced defect state in hierarchical NiCo-LDH and effect on battery-type charge storage

晶界 材料科学 密度泛函理论 电化学 层状双氢氧化物 电容 化学物理 电极 化学工程 纳米技术 凝聚态物理 化学 复合材料 计算化学 微观结构 物理化学 氢氧化物 物理 工程类
作者
Jinjin Ban,Xiaohan Wen,Honghong Lei,Guoqin Cao,Xinhong Liu,Chunyao Niu,Guosheng Shao,Junhua Hu
出处
期刊:Nano Research [Springer Science+Business Media]
卷期号:16 (4): 4908-4916 被引量:59
标识
DOI:10.1007/s12274-022-4485-1
摘要

Domain boundaries are regarded as the effective active sites for electrochemical energy storage materials due to defects enrichment therein. However, layered double hydroxides (LDHs) tend to grow into single crystalline nano sheets due to their unique two-dimentional (2D) lattice structure. Previously, much efforts were made on the designing hierarchical structure to provide more exposed electroactive sites as well as accelerate the mass transfer. Herein, we demonstrate a strategy to introduce low angle grain boundary (LAGB) in the flakes of Ni/Co layered double hydroxides (NiCo-LDHs). These defect-rich nano flakes were self-assembled into hydrangea-like spheres that further constructed hollow cage structure. Both the formation of hierarchical structure and grain boundaries are interpreted with the synergistic effect of Ni2+/Co2+ ratio in an “etching-growth” process. The domain boundary defect also results in the preferential formation of oxygen vacancy (Vo). Additionally, density functional theory (DFT) calculation reveals that Co substitution is a critical factor for the formation of adjacent lattice defects, which contributes to the formation of domains boundary. The fabricated battery-type Faradaic NiCo-LDH-2 electrode material exhibits significantly enhanced specific capacitance of 899 C·g−1 at a current density of 1 A·g−1. NiCo-LDH-2//AC asymmetric capacitor shows a maximum energy density of 101.1 Wh·kg−1 at the power density of 1.5 kW·kg−1.
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
丁丁完成签到,获得积分20
1秒前
热心市民小红花应助Ma采纳,获得10
1秒前
Xieyusen发布了新的文献求助10
2秒前
乐乐应助hajimi123采纳,获得10
2秒前
研友_enPaaZ发布了新的文献求助150
2秒前
酷波er应助李宫俊采纳,获得10
3秒前
桐桐应助cowboy123采纳,获得10
5秒前
Fan发布了新的文献求助10
5秒前
Jasper应助科研通管家采纳,获得30
5秒前
5秒前
5秒前
Ava应助科研通管家采纳,获得10
5秒前
所所应助科研通管家采纳,获得10
6秒前
大模型应助科研通管家采纳,获得10
6秒前
Jasper应助丁丁采纳,获得10
6秒前
6秒前
852应助LCW采纳,获得10
6秒前
孤独的怜阳完成签到,获得积分20
7秒前
啤酒人完成签到 ,获得积分10
9秒前
10秒前
SYLH应助虚心的静枫采纳,获得20
10秒前
义气聪展完成签到 ,获得积分10
13秒前
ommphey发布了新的文献求助100
14秒前
leranlily完成签到,获得积分10
14秒前
MANGMANG发布了新的文献求助10
15秒前
15秒前
15秒前
15秒前
Jasper应助Yuanyuan采纳,获得10
16秒前
李物发布了新的文献求助20
17秒前
quhayley应助樊珩采纳,获得10
20秒前
zhi发布了新的文献求助10
20秒前
Nikola完成签到 ,获得积分10
20秒前
21秒前
英吉利25发布了新的文献求助10
21秒前
24秒前
25秒前
N型半导体发布了新的文献求助10
26秒前
小二郎应助wwpedd采纳,获得30
26秒前
QIU关闭了QIU文献求助
26秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 588
T/CIET 1202-2025 可吸收再生氧化纤维素止血材料 500
Comparison of adverse drug reactions of heparin and its derivates in the European Economic Area based on data from EudraVigilance between 2017 and 2021 500
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 3952383
求助须知:如何正确求助?哪些是违规求助? 3497737
关于积分的说明 11088744
捐赠科研通 3228363
什么是DOI,文献DOI怎么找? 1784838
邀请新用户注册赠送积分活动 868913
科研通“疑难数据库(出版商)”最低求助积分说明 801303