2. Performance of PBA-Derived Materials Applied as Sulfur Hosts for Li–S Batteries.

Material	Material	Metals	Derivatization method	Sulfur content (wt %)	Sulfur loading (mg cm –2 )	Reversible Capacity (mAh g –1 )/Capacity Retention (%)	Initial capacity (mAh g –1 )	WVW (V vs Li/Li+)	REF
Oxide	Fe/CeO2–CNTs	FeCe	Thermal	80	1.1	1003/∼81% after 100 cycles @ 0.2C	1241.0 @ 0.2C	1.7 – 2.8
					4.2	412.0/∼54% after 50 cycles @ 0.2C	902.0 @ 0.2C
	S/CoFe2O4@C	CoFe	Thermal	74.3	-	557/∼68.5% after 500 cycles @ 2C	816.0 @ 2C	1.7 – 2.8
	S/CoFe2O4			-	-	821/74% after 100 cycles @ 0.5C	753.0 @ 0.5C
	Co x Fe3‑xO4@S	CoFe	Thermal	73	1	898.9/47% after 500 cycles @ 1 A/g	1301.6 @ 0.2 A/g	1.7 – 2.8
	Fe2O3@S	Fe		-		591.6/51 after 100 cycles @ 0.2 A/g	1221.7 @ 0.2 A/g
	Co3O4@S	Co		-		531.1 47.8 after 100 cycles @ 0.2 A/g	1018.1 @ 0.2 A/g
Sulfides	CuCo2S4–S	CuCo	Thermal	-	-	642/∼67% after 100 cycles @ 0.2 A/g	959.0 @ 0.2C	1.6 – 2.8
	MnCo2S4–S	MnCo		-	-	731/∼73% after 100 cycles @ 2 A/g	1002.0 @ 0.2C
	NiCo2S4–S	NiCo		45	1.2	336/74% after 1000 cycles @ 1C	1283.0 @ 0.2C
	AC-S	-		-	-	447/∼53% after 100 cycles @ 0.2C	960.0 @ 0.2C
	rGO/S-CFS-2/CP		Liquid	-	∼1.5	629.9/55.9% after 400 cycles @ 0.2C	1126.5 @ 0.2C	1.7 – 2.8
	rGO/S-FeS2/CP	Fe		-		∼ 587.5/after 100 cycles @ 0.2C	1175.0 @ 0.2C
	rGO/S-CP			-		-	1065.0 @ 0.2C
	rGO/S			70		-	-
	S@NiCo/NC	-	Thermal	-	1.2	∼980/∼17.5% after 1500 cycles @ 1C	1303.6 @ 0.1C	1.7 – 2.8
	S@NiCo–NiCoS/NC	-		-	1.2	∼800/1220 cycles @ 1C	1354.1 @ 0.1C
	CoNi2S4	CoNi	Thermal	-	-	536.7/60% after 1000 cycles @ 1C	1231.8 @ 0.1C	1.7 – 2.8
Phosphides	Fe–Ni–P@NC	FeNi	Thermal	69	1.2	470.8/60% after 500 cycles @ 1C	806.4 @ 1C	1.7 – 2.8
	FCNP (S/10 wt %)	FeCoNi	Thermal	60	1.4–1.6	1091.6/69% after 100 cycles @ 0.2C	1091.6 @ 0.2C	1.7 – 2.8
	FCNP (S/20 wt %)					1172.3/75% after 100 cycles @ 0.2C	1172.3 @ 0.2C
	FCNO (S/20 wt %)					854.5/52% after 100 cycles @ 0.2C	854.5 @ 0.2C
	FCNO (S/10 wt %)					1051/100 cycles @ 0.2C	1051 @ 0.2C
	CoSP/rGO/S	Co	Thermal	73	1.2–1.5	400.0/58.6% after 900 cycles @ 1C	670.0 @ 1C	1.7 – 2.8
	CNT/NFP/PP	NiFeP	Thermal	-	-	681.4/79.9% after 300 cycles @ 1C	1244 @ 0.2C	1.7–2.7
Alloys	HEMNS@GR	VCrMoNbZr	Liquid		1.4	404/∼70% after 500 cycles @ 0.1C	1193 @ 0.1C	1.7–2.6
	S@CNCF-3–800		Thermal	73.56	1.2–1.8	802/∼26.1% after 100 cycles @ 0.5C	1315 @ 0.2 C	1.7–2.7
	CoFe@C/S	CoFe	Thermal	59	-	568/∼56.7% after 100 cycles @ 0.1C	1105.3 @ 0.1 C	1.7 – 2.8
	S/CoFe@NC/PPC	CoFe	Thermal	-	-	447.4/48.9% after 500 cycles @ 1C	915.6 @ 1C	1.7–2.8
Metal NP’s	S/Co-NPC-MCs	Co	Thermal	79.6	1.9	941.0/68% after 200 cycles @ 0.5C	1192.0 @ 0.5C	1.7–2.8
MXenes	MXene@PBA	MnFeTi	Liquid	-	1	583.0/69% after 500 cycles @ 0.5C	1220 @ 0.1C	1.5–2.8
MOF	Fe3C-NCNT	FeCoNi	Thermal		4	490/44% after 200 cycles @ 2C	1456 @ 0.2C	1.6–2.8
Others	FeCoPS3/NC	CoFe	Thermal		2	595.3/63% after 1000 cycles @ 1C	1244.4 @ 0.1C	1.7–2.8
	Fe/Fe3C/FeN0.0324	Fe	Thermal	-	4.5	748/73% after 300 cycles @ 0.5C	1025 @ 0.5C	1.7–2.8