高倍率容量层状双金属氢氧化物超级电容材料的研究进展

赵杰; 郭月; 沈桢; 杨立军; 吴强; 王喜章; 胡征

doi:10.11949/0438-1157.20201296

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高倍率容量层状双金属氢氧化物超级电容材料的研究进展

南京大学化工学院院庆专栏 | 更新时间：2026-07-24

- 高倍率容量层状双金属氢氧化物超级电容材料的研究进展
- Research progress of high-rate capacity layered double hydroxide supercapacitor materials
- 化工学报 2020年71卷第11期页码：4851-4872
- 作者机构：
  
  1.南京大学化学化工学院，介观化学教育部重点实验室，江苏南京 210023
  2.江苏省纳米技术重点实验室，江苏南京 210023
- 作者简介：
  
  赵杰(1987—)，男，博士研究生，zhaojienju@163.com
  吴强(1977—)，男，博士，教授，wqchem@nju.edu.cn
  胡征(1964—)，男，博士，教授，zhenghu@nju.edu.cn
- 基金信息：
  
  国家重点研发计划项目(2017YFA0206500;2018YFA0209103);国家自然科学基金项目(52071174;21832003;21972061;21773111);中央高校基本科研业务费专项资金(14380237)
- DOI：10.11949/0438-1157.20201296
  中图分类号： TQ 152
- 收稿：2020-09-09，
  
  修回：2020-09-17，
  
  网络首发：2020-11-03，
  
  纸质出版：2020-11-05
- 稿件说明：
移动端阅览
赵杰, 郭月, 沈桢, 杨立军, 吴强, 王喜章, 胡征. 高倍率容量层状双金属氢氧化物超级电容材料的研究进展[J]. 化工学报, 2020, 71(11): 4851-4872

ZHAO Jie, GUO Yue, SHEN Zhen, YANG Lijun, WU Qiang, WANG Xizhang, HU Zheng. Research progress of high-rate capacity layered double hydroxide supercapacitor materials[J]. CIESC Journal, 2020, 71(11): 4851-4872
赵杰, 郭月, 沈桢, 杨立军, 吴强, 王喜章, 胡征. 高倍率容量层状双金属氢氧化物超级电容材料的研究进展[J]. 化工学报, 2020, 71(11): 4851-4872 DOI： 10.11949/0438-1157.20201296.

ZHAO Jie, GUO Yue, SHEN Zhen, YANG Lijun, WU Qiang, WANG Xizhang, HU Zheng. Research progress of high-rate capacity layered double hydroxide supercapacitor materials[J]. CIESC Journal, 2020, 71(11): 4851-4872 DOI： 10.11949/0438-1157.20201296.

摘要

层状双金属氢氧化物（LDHs）是由带正电荷的金属氢氧化物层板、层间带负电荷的阴离子和水分子组成的二维层状材料，可通过氢氧化物与羟基氧化物之间的可逆氧化还原反应存储与释放电荷，具有理论容量高、形貌与组分可调、成本低、易宏量制备等优点，成为近年来备受关注的超级电容器电极材料。超级电容材料在大电流密度下的比容量与其应用潜力密切相关，研究者们通过材料设计及电极工程，探索了多种提升LDHs倍率容量（即不同电流密度下的容量）的方法与技术，但至今LDHs的实际储能性能仍然远低于预期。简述了LDHs的结构、储能机理与面临的挑战，从增加反应活性、促进电荷传输动力学的角度归纳总结了提升LDHs倍率容量的研究进展，探讨了通过匹配电子传输和离子输运能力进一步提升LDHs倍率容量的新思路。

Abstract

Layered double hydroxides （LDHs） are two-dimensional layered materials composed of positively charged metal hydroxide laminates， negatively charged anions between the layers， and water molecules， which can store and release charge through the reversible oxidation-reduction reaction between hydroxide and oxyhydroxide. LDHs have the advantages of high theoretical capacity， adjustable morphology and composition， low cost， and easy large-scale preparation， and have become the supercapacitor electrode materials with increasing attraction in recent years. To date

the rate capacities of LDHs are far from the expectation due to the low activity associated with low intrinsic activity and small active surface area

and the slow charge transport kinetics arising from the poor intrinsic conductivity to hinder electron transfer and the narrow interlayer distance to impede ion diffusion. Various strategies have developed to increase the activity

by regulating compositions

amorphizating

nanostructuring and constructing hierarchical str

uctures

and to facilitate the charge transport kinetics

by compositing with carbon

depositing/growing on conductive substrates

expanding interlayer distance

exfoliation-self-assembly. This review starts with the structural characteristics and energy storage mechanism of LDHs

and then summarizes the strategies for improving the rate capacities of LDHs. The up-to-date progress in achieving the high-rate capacity by matching electron transfer with ion diffusion is also included

which suggests a new avenue to explore the advanced LDHs for energy storage.

关键词

Keywords

references

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