---
_id: '22220'
abstract:
- lang: eng
text: Abstract Developing resource-abundant and sustainable metal-free bifunctional
oxygen electrocatalysts is essential for the practical application of zinc–air
batteries (ZABs). 2D black phosphorus (BP) with fully exposed atoms and active
lone pair electrons can be promising for oxygen electrocatalysts, which, however,
suffers from low catalytic activity and poor electrochemical stability. Herein,
guided by density functional theory (DFT) calculations, an efficient metal-free
electrocatalyst is demonstrated via covalently bonding BP nanosheets with graphitic
carbon nitride (denoted BP-CN-c). The polarized PN covalent bonds in BP-CN-c
can efficiently regulate the electron transfer from BP to graphitic carbon nitride
and significantly promote the OOH* adsorption on phosphorus atoms. Impressively,
the oxygen evolution reaction performance of BP-CN-c (overpotential of 350 mV
at 10 mA cm−2, 90\% retention after 10 h operation) represents the state-of-the-art
among the reported BP-based metal-free catalysts. Additionally, BP-CN-c exhibits
a small half-wave overpotential of 390 mV for oxygen reduction reaction, representing
the first bifunctional BP-based metal-free oxygen catalyst. Moreover, ZABs are
assembled incorporating BP-CN-c cathodes, delivering a substantially higher peak
power density (168.3 mW cm−2) than the Pt/C+RuO2-based ZABs (101.3 mW cm−2). The
acquired insights into interfacial covalent bonds pave the way for the rational
design of new and affordable metal-free catalysts.
author:
- first_name: Xia
full_name: Wang, Xia
last_name: Wang
- first_name: Ramya
full_name: Kormath Madam Raghupathy, Ramya
id: '71692'
last_name: Kormath Madam Raghupathy
orcid: https://orcid.org/0000-0003-4667-9744
- first_name: Christine Joy
full_name: Querebillo, Christine Joy
last_name: Querebillo
- first_name: Zhongquan
full_name: Liao, Zhongquan
last_name: Liao
- first_name: Dongqi
full_name: Li, Dongqi
last_name: Li
- first_name: Kui
full_name: Lin, Kui
last_name: Lin
- first_name: Martin
full_name: Hantusch, Martin
last_name: Hantusch
- first_name: Zdeněk
full_name: Sofer, Zdeněk
last_name: Sofer
- first_name: Baohua
full_name: Li, Baohua
last_name: Li
- first_name: Ehrenfried
full_name: Zschech, Ehrenfried
last_name: Zschech
- first_name: Inez M.
full_name: Weidinger, Inez M.
last_name: Weidinger
- first_name: Thomas
full_name: Kühne, Thomas
id: '49079'
last_name: Kühne
- first_name: Hossein
full_name: Mirhosseini, Hossein
id: '71051'
last_name: Mirhosseini
orcid: 0000-0001-6179-1545
- first_name: Minghao
full_name: Yu, Minghao
last_name: Yu
- first_name: Xinliang
full_name: Feng, Xinliang
last_name: Feng
citation:
ama: Wang X, Kormath Madam Raghupathy R, Querebillo CJ, et al. Interfacial Covalent
Bonds Regulated Electron-Deficient 2D Black Phosphorus for Electrocatalytic Oxygen
Reactions. Advanced Materials. 2021;33(20):2008752. doi:https://doi.org/10.1002/adma.202008752
apa: Wang, X., Kormath Madam Raghupathy, R., Querebillo, C. J., Liao, Z., Li, D.,
Lin, K., Hantusch, M., Sofer, Z., Li, B., Zschech, E., Weidinger, I. M., Kühne,
T., Mirhosseini, H., Yu, M., & Feng, X. (2021). Interfacial Covalent Bonds
Regulated Electron-Deficient 2D Black Phosphorus for Electrocatalytic Oxygen Reactions.
Advanced Materials, 33(20), 2008752. https://doi.org/10.1002/adma.202008752
bibtex: '@article{Wang_Kormath Madam Raghupathy_Querebillo_Liao_Li_Lin_Hantusch_Sofer_Li_Zschech_et
al._2021, title={Interfacial Covalent Bonds Regulated Electron-Deficient 2D Black
Phosphorus for Electrocatalytic Oxygen Reactions}, volume={33}, DOI={https://doi.org/10.1002/adma.202008752},
number={20}, journal={Advanced Materials}, author={Wang, Xia and Kormath Madam
Raghupathy, Ramya and Querebillo, Christine Joy and Liao, Zhongquan and Li, Dongqi
and Lin, Kui and Hantusch, Martin and Sofer, Zdeněk and Li, Baohua and Zschech,
Ehrenfried and et al.}, year={2021}, pages={2008752} }'
chicago: 'Wang, Xia, Ramya Kormath Madam Raghupathy, Christine Joy Querebillo, Zhongquan
Liao, Dongqi Li, Kui Lin, Martin Hantusch, et al. “Interfacial Covalent Bonds
Regulated Electron-Deficient 2D Black Phosphorus for Electrocatalytic Oxygen Reactions.”
Advanced Materials 33, no. 20 (2021): 2008752. https://doi.org/10.1002/adma.202008752.'
ieee: 'X. Wang et al., “Interfacial Covalent Bonds Regulated Electron-Deficient
2D Black Phosphorus for Electrocatalytic Oxygen Reactions,” Advanced Materials,
vol. 33, no. 20, p. 2008752, 2021, doi: https://doi.org/10.1002/adma.202008752.'
mla: Wang, Xia, et al. “Interfacial Covalent Bonds Regulated Electron-Deficient
2D Black Phosphorus for Electrocatalytic Oxygen Reactions.” Advanced Materials,
vol. 33, no. 20, 2021, p. 2008752, doi:https://doi.org/10.1002/adma.202008752.
short: X. Wang, R. Kormath Madam Raghupathy, C.J. Querebillo, Z. Liao, D. Li, K.
Lin, M. Hantusch, Z. Sofer, B. Li, E. Zschech, I.M. Weidinger, T. Kühne, H. Mirhosseini,
M. Yu, X. Feng, Advanced Materials 33 (2021) 2008752.
date_created: 2021-05-21T12:38:41Z
date_updated: 2022-07-21T09:25:33Z
department:
- _id: '304'
doi: https://doi.org/10.1002/adma.202008752
intvolume: ' 33'
issue: '20'
keyword:
- 2D materials
- bifunctional oxygen electrocatalysts
- black phosphorus
- oxygen evolution reaction
- zinc–air batteries
language:
- iso: eng
page: '2008752'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Advanced Materials
status: public
title: Interfacial Covalent Bonds Regulated Electron-Deficient 2D Black Phosphorus
for Electrocatalytic Oxygen Reactions
type: journal_article
user_id: '71051'
volume: 33
year: '2021'
...
---
_id: '6542'
abstract:
- lang: eng
text: Transient changes of the optical response of WS2 monolayers are studied by
femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra
are analyzed by tracking the line width broadening, bleaching, and energy shift
of the main exciton resonance as a function of time delay after the excitation.
Two main sources for the pump-induced changes of the optical response are identified.
Specifically, we find an interplay between modifications induced by many-body
interactions from photoexcited carriers and by the subsequent transfer of the
excitation to the phonon system followed by cooling of the material through the
heat transfer to the substrate.
article_type: original
author:
- first_name: Claudia
full_name: Ruppert, Claudia
last_name: Ruppert
- first_name: Alexey
full_name: Chernikov, Alexey
last_name: Chernikov
- first_name: Heather M.
full_name: Hill, Heather M.
last_name: Hill
- first_name: Albert F.
full_name: Rigosi, Albert F.
last_name: Rigosi
- first_name: Tony F.
full_name: Heinz, Tony F.
last_name: Heinz
citation:
ama: Ruppert C, Chernikov A, Hill HM, Rigosi AF, Heinz TF. The Role of Electronic
and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast
Excitation. Nano Letters. 2017;17(2):644-651. doi:10.1021/acs.nanolett.6b03513
apa: Ruppert, C., Chernikov, A., Hill, H. M., Rigosi, A. F., & Heinz, T. F.
(2017). The Role of Electronic and Phononic Excitation in the Optical Response
of Monolayer WS2 after Ultrafast Excitation. Nano Letters, 17(2),
644–651. https://doi.org/10.1021/acs.nanolett.6b03513
bibtex: '@article{Ruppert_Chernikov_Hill_Rigosi_Heinz_2017, title={The Role of Electronic
and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast
Excitation}, volume={17}, DOI={10.1021/acs.nanolett.6b03513},
number={2}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
author={Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi,
Albert F. and Heinz, Tony F.}, year={2017}, pages={644–651} }'
chicago: 'Ruppert, Claudia, Alexey Chernikov, Heather M. Hill, Albert F. Rigosi,
and Tony F. Heinz. “The Role of Electronic and Phononic Excitation in the Optical
Response of Monolayer WS2 after Ultrafast Excitation.” Nano Letters 17,
no. 2 (2017): 644–51. https://doi.org/10.1021/acs.nanolett.6b03513.'
ieee: C. Ruppert, A. Chernikov, H. M. Hill, A. F. Rigosi, and T. F. Heinz, “The
Role of Electronic and Phononic Excitation in the Optical Response of Monolayer
WS2 after Ultrafast Excitation,” Nano Letters, vol. 17, no. 2, pp. 644–651,
2017.
mla: Ruppert, Claudia, et al. “The Role of Electronic and Phononic Excitation in
the Optical Response of Monolayer WS2 after Ultrafast Excitation.” Nano Letters,
vol. 17, no. 2, American Chemical Society (ACS), 2017, pp. 644–51, doi:10.1021/acs.nanolett.6b03513.
short: C. Ruppert, A. Chernikov, H.M. Hill, A.F. Rigosi, T.F. Heinz, Nano Letters
17 (2017) 644–651.
date_created: 2019-01-09T10:00:23Z
date_updated: 2022-01-06T07:03:11Z
department:
- _id: '230'
doi: 10.1021/acs.nanolett.6b03513
intvolume: ' 17'
issue: '2'
keyword:
- Atomically thin 2D materials
- carrier and phonon dynamics
- ultrafast spectroscopy
language:
- iso: eng
page: 644-651
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '58'
name: TRR 142 - Subproject A1
publication: Nano Letters
publication_identifier:
issn:
- 1530-6984
- 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer
WS2 after Ultrafast Excitation
type: journal_article
user_id: '49428'
volume: 17
year: '2017'
...