Morphology controlled NiCo₂O₄ as anode materials for high electrochemical performance lithium‐ion batteries

Abstract

BACKGROUND: Due to the high energy density of lithium-ion batteries, they have become the main power sources for electric vehicles. However, lithium-ion batteries suffer from severe capacity fading during their electrochemical cycles. Therefore, it is significant to develop perfect electrode materials for lithium-ion batteries. It is known that the traditional anode materials have low specific capacity value and poor cycle performance. To overcome this problem, a novel anode material is designed in our work. RESULTS: In electrochemical tests, the initial specific capacity of the NiCo 2 O 4 spheres/nanosheets (NCOs/n) electrode is as high as 1426 mAh g −1 at the current density of 0.2 C. The capacity of the NCOs/n electrode can maintain at 1020 mAh g −1 at the current density of 1C after 1000 cycles. CONCLUSIONS: The as-prepared NCOs/n electrodes exhibit high specific capacity value and superior cycle stability in high current densities.

Insights in Utilizing NiCo2O4/Co3O4 Nanowires as Anode Material in Lithium‐Ion Batteries

“…However, this rapid growth has given momentum to the biggest crisis of this era, i. e., climate and energy. The continuous depletion of non‐renewable sources and the limited supply of energy from renewable sources at high cost expedited the investigation for numerous alternatives to meet the present energy demands for a longer duration [1] . Among all the investigations, lithium‐ion batteries (LIBs) have already achieved great success as energy storage devices for many applications [2] .…”

“…The continuous depletion of non-renewable sources and the limited supply of energy from renewable sources at high cost expedited the investigation for numerous alternatives to meet the present energy demands for a longer duration. [1] Among all the investigations, lithium-ion batteries (LIBs) have already achieved great success as energy storage devices for many applications. [2] However, the use of LIBs for advanced applications such as for electric vehicles is limited due to their energy density, safety performance, and cost.…”

Recovery of pure nickel powder from petroleum refinery sludge via a process consisting of leaching, cementation, precipitation, solvent extraction, and chemical reduction

“…[3][4][5] Meanwhile, since nickel is considered to be one of the key components for the manufacture of lithium-ion batteries (LIBs), it is necessary to develop an efficient process by which these valuable metals can be recovered from the sludge. 6 In fact, numerous studies have been made on recovery of nickel from primary and secondary resources. 7,8 Namely, secondary resources containing nickel, such as spent LIBs and catalysts, can be good raw materials for the recovery of nickel.…”

“…In addition, the demand for some critical metals such as nickel and cobalt has been explosive due to the rapid development of electric vehicles 3‐5 . Meanwhile, since nickel is considered to be one of the key components for the manufacture of lithium‐ion batteries (LIBs), it is necessary to develop an efficient process by which these valuable metals can be recovered from the sludge 6 . In fact, numerous studies have been made on recovery of nickel from primary and secondary resources 7,8 .…”