2019
DOI: 10.1021/acsnano.8b08046
|View full text |Cite
|
Sign up to set email alerts
|

Conjugated Microporous Polymers with Tunable Electronic Structure for High-Performance Potassium-Ion Batteries

Abstract: Conjugated microporous polymers (CMPs) with π-conjugated skeletons show great potential as energy storage materials due to their porous structure and tunable redox nature. However, CMPs and the structure−performance relationships have not been well explored for potassium-ion batteries (KIBs). Here, we report the structure-engineered CMP anodes with tunable electronic structures for high-performance KIBs. The results demonstrate that the electronic structure of the CMPs plays an important role in enhancing pota… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

2
113
0

Year Published

2019
2019
2023
2023

Publication Types

Select...
9

Relationship

2
7

Authors

Journals

citations
Cited by 182 publications
(115 citation statements)
references
References 79 publications
2
113
0
Order By: Relevance
“…This strong cathodic peak disappeared in the following cycles, demonstrating that the formed SEI film in the first cycle is stable and prevents the further decomposition of electrolytes in the following cycles. Moreover, TzThBT showed a pair of strong asymmetrical redox peaks at 1.4/2.3 V, corresponding to the reversible redox reaction of BT and Th segments . Noticeably, the CV curves almost overlap after the second scanning, indicative of the high stability and reversibility of the redox reaction of TzThBT.…”
Section: Resultsmentioning
confidence: 99%
“…This strong cathodic peak disappeared in the following cycles, demonstrating that the formed SEI film in the first cycle is stable and prevents the further decomposition of electrolytes in the following cycles. Moreover, TzThBT showed a pair of strong asymmetrical redox peaks at 1.4/2.3 V, corresponding to the reversible redox reaction of BT and Th segments . Noticeably, the CV curves almost overlap after the second scanning, indicative of the high stability and reversibility of the redox reaction of TzThBT.…”
Section: Resultsmentioning
confidence: 99%
“…Unlike the uniform LUMO distribution on the whole segment of PTCDA (Figure b), the LUMO orbitals are mainly concentrated on the four carbonyl groups for PTCDA‐0C (Figure c). This phenomenon could be attributed to the symmetrical introduction of strong electron‐donating group of ‐NH‐ segments on both sides . Upon further introduction of an weak electron‐donating group of ‐(CH 2 ) k ‐ segment (Figure d; Figure S8, Supporting Information), the LUMO orbitals of PTCDA‐2C, PTCDA‐3C, and PTCDA‐4C samples are further concentrated on the carbonyl groups near the ‐(CH 2 ) k ‐ segment.…”
Section: Resultsmentioning
confidence: 99%
“…Inspired by the existing pioneering work involving graphite, tremendous efforts have been devoted to this area of research. To date, several categories of materials are verified to be effective for potassium storage in terms of anodes, including carbon nanophases (eg, hard carbon, graphite, and heteroatom‐doped carbon), alloy‐type (semi‐)metals (eg, Sn, Bi, Sb, and P), metal oxides (eg, Nb 2 O 5 , SnO 2 , Fe x O, and Sb 2 MoO 6 )/sulfides (eg, MoS 2 , VS 2 , SnS 2 , and Sb 2 S 3 ) and phosphides (eg, FeP, CoP, Sn 4 P 3 , and GeP 5 ), sylvite compounds (eg, KVPO 4 F, K 2 V 3 O 8 , KTi 2 (PO 4 ) 3 , and K x Mn y O z ), metal‐organic composites (eg, Co 3 [Co(CN) 6 ] 2 and K 1.81 Ni[Fe(CN) 6 ] 0.97 ·0.086H 2 O), and pure organic polymers (eg, boronic ester, fluorinated covalent triazine, perylene‐tetracarboxylate, perylenetetracarboxylic diimide, azobenzene‐4,4′‐dicarboxylic acid potassium, 2,2′‐azobis[2‐methylpropionitrile], and poly[pyrene‐ co ‐benzothiadiazole]). However, most carbon materials barely deliver reversible capacities exceeding 300 mAh g −1 despite their excellent electrochemical cyclability.…”
Section: Introductionmentioning
confidence: 99%