Boosted energy storage via carbon surface passivation
Boosted energy storage via carbon surface passivation
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通过碳表面钝化增强能量储存
DOI：
10.1016/j.carbon.2021.09.028
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发表时间：
2021-11
期刊：
影响因子：
10.9
通讯作者：
Yan Zifeng
中科院分区：
文献类型：
--
作者：
Zhang Yu;Zhao Lianming;Wang Xuyang;Wang Xiaoning;Li Honglin;Hu Han;Fan Zhuangjun;Xing Wei;Yan Zifeng
The wide application of electric double layer capacitor (EDLC) is restricted by its low energy density. Such a bottleneck is hopefully tackled via engineering the carbon surface chemistry to kinetically inhibit the electrolyte decomposition and effectively extend the cell voltage of the EDLC. Here, we propose a facile carbon surface passivation strategy by rational functionalization with fluorine-containing functional groups. Evidenced by electrochemical measurements, the fluorinated activated carbon (F-AC) could tolerate a wider voltage window in commercially available organic electrolyte compared with the commercial activated carbon (AC). The theoretical simulation further verifies that the F-AC displays much increased activation energy for the formation of intermediate products, thereby dynamically hindering the electrolyte decomposition on the carbon surface. The F-AC based EDLC exhibits a remarkable voltage expansion from 2.7 V to 3.3 V and excellent cycling stability of 98.3% capacitance retention after 20000 cycles. A high energy density of 43.3 Wh kg−1is achieved at the power density of 135 W kg−1, which is about 1.5-fold enhancement compared with the AC based counterpart, outperforming most of the reported organic EDLCs. These inspiring results bring fundamental insights into the regulation of voltage window, which will stimulate the design of high-performance energy storage devices.
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杂原子掺杂碳增强电荷存储的起源
DOI：
10.1002/ange.202000319
发表时间：
2020
期刊：
Angewandte Chemie International Edition
影响因子：
--
作者：
Cuixia Cui;Yong Gao;Jun Li;Chongyin Yang;Min Liu;Huile Jin;Zhenhai Xia;Liming Dai;Yong Lei;Jichang Wang;Shun Wang
通讯作者：
Shun Wang
影响因子：
3.3
作者：
P. Marcoux;J. Schreiber;P. Batail;S. Lefrant;J. Renouard;Guy Michel Jacob;D. Albertini;J. Mevellec-J.-Meve
通讯作者：
P. Marcoux;J. Schreiber;P. Batail;S. Lefrant;J. Renouard;Guy Michel Jacob;D. Albertini;J. Mevellec-J.-Meve
影响因子：
13.1
作者：
Adusei, Paa Kwasi;Gbordzoe, Seyram;Shanov, Vesselin
通讯作者：
Shanov, Vesselin
影响因子：
9.2
作者：
An, Haoran;Li, Yu;Feng, Wei
通讯作者：
Feng, Wei
影响因子：
32.5
作者：
T. M. Gür
通讯作者：
T. M. Gür