Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6603056 | Electrochimica Acta | 2018 | 10 Pages |
Abstract
Most high capacity anode materials expand significantly during charging, such anodes must contain sufficient porosity or tough protective layer in the discharged state to enable the expansion, yet not excess porosity or low mobility of mass, which lowers the overall energy density. Here, we present a high capacity anode consisting of hierarchical mesoporous carbon nanospheres without any additives, which are derived from lignosulfonate and can be used as an excellent support for in-situ embedding NiO nanoparticles of 11â¯wt%. The as-prepared hybrid nanospheres have an integrated architecture with micropore-to-mesopore distribution and a surface area of 852â¯m2â¯gâ1. As a result, the hybrid nanosphere anode exhibit a high discharging capacity of 863â¯mAh·gâ1 at 0.1â¯Aâ¯gâ1 is retained after 100 cycles for a Li-ion battery. When evaluated as an electrode material for supercapacitors, the as-prepared hybrid nanospheres manifest exceptional performance with a high pseudocapacitance of 508â¯Fâ¯gâ1. Remarkably, about 92% of the initial capacitance can be retained after 2000 charge/discharge cycles. This approach generates a strategy to combine metal oxide nanoparticles with nanostructured carbon derived from biomass, which is expected for a broad set of possible electrode chemistries.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zeping Zhou, Feng Chen, Tairong Kuang, Lingqian Chang, Jintao Yang, Ping Fan, Zhengping Zhao, Mingqiang Zhong,