Potential-Induced Electronic Structure Changes in Supercapacitor Electrodes Observed by In Operando Soft X-Ray Spectroscopy

被引：26

作者：

Bagge-Hansen, Michael ^{[1
]}

Wood, Brandon C. ^{[1
]}

Ogitsu, Tadashi ^{[1
]}

Willey, Trevor M. ^{[1
]}

Tran, Ich C. ^{[1
]}

Wittstock, Arne ^{[1
]}

Biener, Monika M. ^{[1
]}

Merrill, Matthew D. ^{[1
]}

Worsley, Marcus A. ^{[1
]}

Otani, Minoru ^{[2
]}

Chuang, Cheng-Hao ^{[3
]}

Prendergast, David ^{[4
]}

Guo, Jinghua ^{[3
]}

Baumann, Theodore F. ^{[1
]}

van Buuren, Tony ^{[1
]}

Biener, Juergen ^{[1
]}

Lee, Jonathan R. I. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA

[2] Natl Inst Adv Ind Sci & Technol, Nanosyst Res Inst, Tsukuba, Ibaraki, Japan

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source Div, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Mol Foundry, Berkeley, CA 94720 USA

来源：

ADVANCED MATERIALS | 2015年 / 27卷 / 09期

关键词：

ABSORPTION FINE-STRUCTURE; ELECTROCHEMICAL CAPACITORS; QUANTUM CAPACITANCE; SUBNANOMETER PORES; UNDULATOR BEAMLINE; CARBON ELECTRODES; LIQUID INTERFACES; IN-SITU; GRAPHENE; GAS;

D O I：

10.1002/adma.201403680

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dynamic physiochemical response of a functioning graphene-based aerogel supercapacitor is monitored in operando by soft X-ray spectroscopy and interpreted through ab initio atomistic simulations. Unanticipated changes in the electronic structure of the electrode as a function of applied voltage bias indicate structural modifications across multiple length scales via independent pseudocapacitive and electric double layer charge storage channels.

引用

页码：1512 / +

页数：8

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