2019
DOI: 10.1016/j.jallcom.2019.03.396
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Tunable hierarchical porous carbon aerogel / graphene composites cathode matrix for Li-S batteries

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Cited by 19 publications
(8 citation statements)
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“…However, the microstructural collapse and shrinkage of CA during carbonization lead to the disappear of mesopores and macropores. Therefore, the micropores is dominant in CAs [ 14 ]. In the system of hydrochloric acid, the added PEG2000 acts as a soft template and structure-directing agent in the reaction [ 25 ].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…However, the microstructural collapse and shrinkage of CA during carbonization lead to the disappear of mesopores and macropores. Therefore, the micropores is dominant in CAs [ 14 ]. In the system of hydrochloric acid, the added PEG2000 acts as a soft template and structure-directing agent in the reaction [ 25 ].…”
Section: Resultsmentioning
confidence: 99%
“…It is a kind of porous amorphous carbon nano-material with a 3D interconnected structure, high porosity (>80%), large specific surface area (usually 400~1100 m 2 ·g −1 before activation) and a particle diameter of around 3~20 nm [ 2 ]. CA is unique among other aerogels because of its electrical conductivity, corrosion resistance and chemical stability [ 3 , 4 ], and has broad prospects in water purification [ 5 , 6 ], drug delivery system [ 7 ], heat insulation [ 8 ], super capacitor [ 9 , 10 , 11 ], carrier for catalyst [ 12 , 13 ], batteries [ 14 ] and other fields [ 15 , 16 , 17 ].…”
Section: Introductionmentioning
confidence: 99%
“…This result is in agreement with the CV analysis. In Figure 6b, the low potential of around 1.8 V corresponds to the conversion from Li 2 S 2 to Li 2 S [44]. With the increase of the current rate, the voltage of the discharge plateau is more negative and the voltage of the charge flat is more positive, indicating greater polarization.…”
Section: Resultsmentioning
confidence: 99%
“…The high-frequency region can be ascribed to the accumulated passivation layer on the cathode surface, which is attributed to the formation of solid products (Li2S2/Li2S) in the electrode. The semicircle in the medium-frequency region is associated with charge transfer resistance at the electrode-electrolyte interface [51,60]. Moreover, the low-frequency region shows an inclined line that is assigned to the Li-ion diffusion resistance [61].…”
Section: Electrochemical Propertiesmentioning
confidence: 97%
“…Moreover, the cycling performance of the PC/S is comparable to those of the mesoporous carbon microtube/S [47], tubular amorphous C@S composite [48] and C@PC/S composite etc. [49][50][51][52][53] that are listed in Table S1. Despite that the corresponding literatures has reported a significant progress, the satisfactory electrochemical capabilities of PC/S cathode may ascribe to the following advantageous properties.…”
Section: Electrochemical Propertiesmentioning
confidence: 99%