Self-Assembled Binary Organic Granules with Multiple Lithium Uptake Mechanisms toward High-Energy Flexible Lithium-Ion Hybrid Supercapacitors

被引：84

作者：

Hu, Zhongli ^{[1
,2
]}

Sayed, Shah ^{[1
,2
]}

Jiang, Tao ^{[1
,2
]}

Zhu, Xingyu ^{[1
,2
]}

Lu, Chen ^{[1
,2
]}

Wang, Gulian ^{[1
,2
]}

Sun, Jingyu ^{[1
,2
]}

Rashid, Arif ^{[1
,2
]}

Yan, Chenglin ^{[1
,2
]}

Zhang, Li ^{[1
,2
]}

Liu, Zhongfan ^{[1
,2
,3
]}

机构：

[1] Soochow Univ, Soochow Inst Energy & Mat Innovat, Coll Energy, Suzhou 215006, Peoples R China

[2] Soochow Univ, Key Lab Adv Carbon Mat & Wearable Energy Technol, Suzhou 215006, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, Ctr Nanochem CNC, Beijing 100871, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2018年 / 8卷 / 30期

基金：

中国国家自然科学基金;

关键词：

binary organic granules; lithium-ion hybrid supercapacitors; maleic nanocrystals; multiple lithium uptake mechanisms; self-assembly synthesis; MALEIC-ACID; ELECTRODE MATERIALS; STORAGE; BATTERIES; ANODE; COMPOSITE; GRAPHENE; SPECTROSCOPY; NANOWIRES; CAPACITY;

D O I：

10.1002/aenm.201802273

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium-ion hybrid supercapacitors (Li-HSCs), by virtue of synergizing the merits of batteries and supercapacitors, have attracted considerable attention for high-energy/-power energy storage applications. Inorganic transition-metal compounds with pseudocapacitive characteristics have been widely investigated as promising anodes for use in advanced Li-HSCs. Nevertheless, the concept of using eco-friendly and naturally abundant organic compounds as anodes for Li-HSCs has rarely been realized so far, due to their inferior electrical and ionic conductivity and low capacitive activity. Herein, an innovative self-assembly strategy to synthesize uniform binary organic granules as high-capacitive and durable anodes for the construction of high-energy flexible Li-HSCs is reported. The unique architecture of maleic acid@polyvinylidene fluoride (MA@PVDF) granules consisting of ultrafine MA nanocrystals within a PVDF network offers multiple lithium storage mechanisms including two-electron lithiation/delithiation, Li+-ion intercalation/deintercalation within the MA (020) planes, and Li+-ion adsorption/desorption at the MA nanocrystals/electrolyte interface. The as-constructed 4.3 V Li-HSC full cell comprising a MA@PVDF anode and an activated carbon cathode delivers high energy/power densities (158.4 Wh kg(-1)/107.5 W kg(-1) and 70.9 Wh kg(-1)/10750 W kg(-1)), outperforming those of organic anode-based Li/Na-HSCs and the state-of-the-art inorganic hybrid capacitors. The deriving prototype flexible Li-HSC devices manifest exceptional energy output under various deformed conditions and bent-release cycling.

引用

页数：12

共 52 条

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