Typical micro-LIBs and their main electrochemical performances.

	Anode	Cathode	Electrolyte	Capacity	Cycling stability	Ref.
Intercalation-type	Pre-lithiated CNTs	LNMO spinel	1 M LiPF6 in EC : DEC = 1 : 1 (volume)	238 μA h cm−2 at 1C	90% in the initial cycle	76
	LTO@GCa	LFP@GC	LiTFSI-P14TFSI-PVDF-HFP	131.4 μA h cm−2 at 50 μA cm−2	75.6% after 5000 cycles	77
	Carbon foam	Li foils	1 M LiPF6 in EC : DEC = 1 : 1 (volume)	1.22 mA h cm−2	76% in the initial cycle	78
	TiO2 film	Li metal	1 M LiClO4 in EC : DEC = 1 : 1 (volume)	1600 μA h cm−2	∼100% after 100 cycles	79
	Al2O3/Pt/Nb2O5 film	Li metal	1 M LiClO4 in EC : DMC = 1 : 1 (volume)	8 μA h cm−2 at 1C	—	80
Conversion-type	3D Ni/SnOx/C	Li metal	1 M LiPF6 in EC : DEC = 1 : 1 (volume)	1.06 mAhcm−2 at 0.1 mA cm−2	72% after 100 cycles	81
	3D Ni5P4	Li metal	1 M LiPF6 in EC : DEC = 1 : 1 (volume)	667 mA h g−1	80% after 100 cycles	82
	SnO2 film	Li foils	1 M LiPF6 in EC : DMC = 1 : 1 (volume)	498.3 μA h g−1	—	83
Alloying-type	Si-CNT papers	Li metal	1 M LiPF6 in EC : DEC = 1 : 1 (volume)	1000 μA h cm−2	97% after 1000 cycles	84
	Wafer-grade monocrystalline silicon	NCA	1 M LiClP4 in PC with 2% VC	30 mW h cm−2	99.9% after 180 cycles	85
	Sn–Si composite film	Li foil	1 M LiPF6 in EC : EMC: DMC = 1 : 1: 1 (volume)	1134 mA h g−1	82.8% after 50 cycles	86

^aGC: graphene and CNTs.