文章信息/Info

Title:

Recent Progress on Structure Regulation ofLayered Hydroxides and Their Application in Supercapacitors

文章編號:

1674-3962(2022)05-0321-10

作者:

劉強(qiáng); 葉飛; 龐睿呂婧; 劉揚(yáng); 胡林峰

（東南大學(xué)材料科學(xué)與工程學(xué)院，江蘇 南京 211189）

Author(s):

LIU Qiang;  YE Fei;  PANG Ruilvjing;  LIU Yang;  HU Linfeng

(School of Materials Science and Engineering, Southeast University, Nanjing 211189, China)

關(guān)鍵詞:

超級電容器; 層狀金屬氫氧化物; 能量密度; 形貌調(diào)控; 晶體結(jié)構(gòu)調(diào)控

Keywords:

supercapacitor;  layered metal hydroxides;  energy density;  morphology regulation;  crystal structure regulation

分類號:

TB34；TM53

DOI:

10.7502/j.issn.1674-3962.202106002

文獻(xiàn)標(biāo)志碼:

A

摘要:

隨著環(huán)境污染與能源危機(jī)的加劇以及人類對能源的需求日益增長，亟需尋找一種新型儲(chǔ)能器件替代傳統(tǒng)的化石燃料。超級電容器因其高功率密度、長循環(huán)壽命、寬溫度范圍、高安全性、環(huán)境友好的優(yōu)勢，成為具有廣泛應(yīng)用前景的儲(chǔ)能技術(shù)。然而，受制于比電容（C）低和電壓窗口（V）窄的影響，超級電容器的能量密度難以滿足儲(chǔ)能市場的需求，嚴(yán)重限制了其實(shí)際應(yīng)用。綜述了如何通過微觀形貌調(diào)控和晶體結(jié)構(gòu)調(diào)控策略設(shè)計(jì)、優(yōu)化層狀金屬氫氧化物以提高其贗電容性能，并詳細(xì)闡述了上述策略增強(qiáng)層狀金屬氫氧化物能量密度的機(jī)理，展望了層狀金屬氫氧化物在未來超級電容器領(lǐng)域的發(fā)展前景。

Abstract:

As the series environmental pollution and energy crisis, and the growth of energy demand, it is very essential to develop novel energy storage device to replace traditional fossil fuels. Supercapacitors has been considered as a prospective energy storage device with broad application prospects due to the high power density, long cycle life, wide temperature range, high safety and environmental friendliness. However, the energy density of supercapacitors (E=1/2CV2) cannot meet the application requirements owing to the relatively low specific capacitance (C) and small voltage window (V). This review summarizes the strategies for designing and optimizing inorganic layered hydroxides to enhance the specific capacitance by morphology and crystal structure regulation, respectively. We also expound our viewpoints on the future development prospects of the layered hydroxides for energy storage applications.