2017
DOI: 10.1038/nenergy.2017.90
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Burning lithium in CS2 for high-performing compact Li2S–graphene nanocapsules for Li–S batteries

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Cited by 372 publications
(328 citation statements)
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“…The comparison clearly illustrates that our freestanding 3DCSC-Li 2 S cathode without polymer binder and metallic current collector exhibits the best comprehensive performance; particularly, the content and areal loading of Li 2 S in our 3DCSC-Li 2 S cathode are nearly twice and 3.5 times of those average values of previous reports, respectively, as shown in Figure 4e. It is noted that the Li 2 S cathode in the work of Amine and co-workers (R15 in the Supporting Information) exhibited much better electrochemical performance than other reports, [41] but, it still needed conductive additives, polymer binders, and metallic current collectors, which will not only decrease the energy and power density of the full cell, but also affect the rate and cycling performance. Owing to the excellent electrocatalytic activity and strong chemical absorption of 3DCSC toward LiPS, the 3DCSC-Li 2 S cathodes can deliver the highest areal capacity of 8.44 mA h cm −2 , which is about 4.7 times of the average value in the previous reports (1.8 mA h cm −2 ) and also is well above that in commercial lithium-ion batteries.…”
Section: Resultsmentioning
confidence: 88%
“…The comparison clearly illustrates that our freestanding 3DCSC-Li 2 S cathode without polymer binder and metallic current collector exhibits the best comprehensive performance; particularly, the content and areal loading of Li 2 S in our 3DCSC-Li 2 S cathode are nearly twice and 3.5 times of those average values of previous reports, respectively, as shown in Figure 4e. It is noted that the Li 2 S cathode in the work of Amine and co-workers (R15 in the Supporting Information) exhibited much better electrochemical performance than other reports, [41] but, it still needed conductive additives, polymer binders, and metallic current collectors, which will not only decrease the energy and power density of the full cell, but also affect the rate and cycling performance. Owing to the excellent electrocatalytic activity and strong chemical absorption of 3DCSC toward LiPS, the 3DCSC-Li 2 S cathodes can deliver the highest areal capacity of 8.44 mA h cm −2 , which is about 4.7 times of the average value in the previous reports (1.8 mA h cm −2 ) and also is well above that in commercial lithium-ion batteries.…”
Section: Resultsmentioning
confidence: 88%
“…To conclude, we present a new approach to bind the sulfur in the sulfur-carbon material, which employs SO 3 H and SO 4 2− as the sulfur source rather than elemental sulfur in a thermal-treated process. The aromatic ring is first carbonized to form the active carbon matrix that is served as the reducing agent in the following reaction process.…”
Section: Resultsmentioning
confidence: 99%
“…As shown in Figure 7a, the SC-BDSA electrode exhibits stable cycling performance and excellent rate capabilities at 0.6-2.8 V. Upon cycling at 250 mA g −1 , a discharge capacity of 1050 mAh g −1 is delivered, which indicates the high utilization of S in the activated SC-BDSA cathode. [4] We have made a comparison between the performance of SC-BDSA electrode developed in this work and the data from the literature on other existing S/C cathode materials. When the current density is increased to 2500 mA g −1 , the initial discharge capacity is 696 mAh g −1 that maintains a reversible capacity of 452 mAh g −1 over 1000 cycles with a capacity decay of 0.035% per cycle.…”
Section: Na-s Battery Behaviors Of Sc-bdsamentioning
confidence: 99%
“…Part of the fine particles even detached from the original particle (red arrow in Figure S11a, Supporting Information) which resulted in the loss of active materials and the generation of microcracks and voids in the electrode (yellow arrow in Figure S11b, Supporting Information). [35] However, for NiS x @C, R s remains stable throughout the entire cycle. More importantly, R s of the NiS-600 decreases rapidly during the 6th to 15th cycles, which results from severe dissolution of polysulfide (PS) species into the liquid electrolyte.…”
Section: Nismentioning
confidence: 96%